Not Just How Well….but How, as Well

It’s understood that print buyers are concerned with quality and price, and printers are concerned with efficiency and profitability; but a recent presentation by Martine Padilla made me realize that these goals are not only not in conflict, but are in fact complimentary parts of a common goal.

Martine’s presentation, given at this year’s DSCOOP Conference, is nearly an hour long, and after listening several time and taking notes, I’m still turning the message over in my mind, so all I can offer here is the very briefest encapsulation; but please check it our or read Martine’s synopsis, because I think it addresses issues that are beginning to resonate in our industry on multiple levels.

Very quickly, Martine’s focus is on sustainability in print, and the presentation outlines how this goal unites the interests of printers and print buyers in unexpected ways.

Here is my interpretation of the theme, boiled down to absolute basics:

  1. Print buyers have an interest in getting accurate printing at a good price.
  2. Printers have an interest in reducing waste in order to turn better profits.
  3. These goals seem at first to be in conflict, or at least unrelated.
  4. Brand owners have and interest in both #1 and #2. They want to purchase quality printing at a good price, and they also want to know that the print was produced responsibly and sustainably.
  5. The interests of the brand owners in having quality printing produced responsibly and sustainably unify the interests of both buyers and printers in achievement of a common goal.

Wow. Does everybody else see why this is an absolutely perception-bending shift? By printing sustainably, printers can offer a valuable service to their most important clients while saving money on production and becoming more profitable themselves.

Part of what makes this fit together is an expanded definition of sustainability that includes familiar factors like FSC, but then goes far beyond them to include a wholistic array of factors including substrates, ink and chemicals, waste reduction, carbon footprint reduction, best business practices, continuous improvement, and energy efficiency, not to mention ethical, societal and fiscal factors.

One focal point of all of this is the Sustainable Green Printing Partnership, and their website has extensive information on the subject, but me say this another way, because I’m really finding the whole concept to be too big to easily fit into a sentence: As corporations are learning that environmental responsibility is an important component of their brand message, printers are finding that one of the most valuable services that they can provide to their best  corporate clients is their own efficiency and profitability, created as a natural consequence of doing what is best for themselves in the first place.

Clearly it is going to take more than one post to cover all that is implied by the developing print sustainability movement; it is the broad scope of the initiative that makes it so exciting. So I will be following up on the theme in future articles, looking at individual areas where the interests of printers, buyers and brand owners come together for everyone’s benefit. There is something solid here, and I am determined to learn more about it.

An awful lot of ink has been spilled wondering what would be the next big thing in print. I think this may be it.

I try to keep all my posts informative and product promotion-free. If you are interested in the subject, please check out my other posts, and be sure to browse my website for more information on accurate color and effective prep-press-buyer collaboration.

 

 

 

Posted in Green, Uncategorized | Tagged , , , | 1 Comment

ISO 3664, OBA’s and Paper

The ISO 3664 lighting standard was meant to give a more realistic simulation of real-world viewing conditions by increasing the amount of activity in UV spectral regions. Mission accomplished; but it has also revealed long-standing issues in proof-press matching that had previously been hidden.

Color engineers don’t particularly like UV because it can create serious complications in measurements: this is one reason why calibration and linearization systems for proofing devices so often make use of instruments that filter out UV light before it can reach the surface of the proofing substrate. Using light stripped of its UV component eliminates the “black light” effect that can cause papers with optical brighteners to “glow in the dark” and take on an additional bluish brightness.

For similar reasons, GRACoL has long specified paper with essentially neutral whitepoint and no optical brighteners (chemical agents that absorb light in the UV range and reemit light in the visible range).

As GRACoL and standards-based printing took hold in the United States, manufacturers of proofing papers took considerable pains to supply the market with the proofing papers that matched white point aims specified by GRACoL…..and for a while everybody was fairly happy. But soon, perceptive viewers began to notice that the wonderfully GRACoL-compliant papers that manufacturers had created at considerable expense simply didn’t match the ultra-bright, OB-using, blue white papers that had become so popular with print customers.

Paper companies had discovered the preference for a bright blue look, and the preference for blue is nothing new. Mrs Stewart’s bluing has helped keep laundered fabrics looking white since 1883. Her original product used Prussian Blue dye to give white clothes their fresh bluish white look. Modern printing papers use UV activated optical brighteners to give a bluish shift and at the same time boost brightness.

ISO 3664, which specified increased levels UV activity in D50 graphics arts lighting, gave a standard that was closer to “real” daylight, but at the same time exposed even more strongly some of the problems being caused by the mismatch between OBA-free proofing papers and OBA-laden printing paper.

At first blush, it seemed as if switching back to proofing papers containing OBAs would be an easy way of matching proof appearance to final print paper output, but unfortunately, this is not the case.  As the illustration shows, different OBAs may fluoresce at different hues, from deep purple to a pastel bluish white, and there is no standard for for appearance of OBAs. What this means in practical terms is that there is currently no objectively verifiable way for accurate matching of OBA containing proof papers to OBA containing printing papers.

ISO 3664 has given us a lighting standard closer than ever to actual daylight, but at the same time it has revealed more strongly than ever before existing issues with proof press matching. Until this dilemma is resolved, we may all be forced to reevaluate the best methods for matching proof and press sheet.

 I try to keep all my posts informative and product promotion-free. If you are interested in the subject, please check out my other posts and be sure to browse my website for more information on accurate color and effective prep-press collaboration.

 

Posted in Color Science, Prepress, Standards | Tagged , , , | 2 Comments

“I Just Need One Good Sheet to the Numbers”

For prepress managers, “One good sheet to the numbers” is often all they need to help press operators get better results via corrective plate curves. So why is it so hard to get one?  I take a look at that question in this post.

Press operators don’t ask for help a lot. These are usually guys with a lot of techniques to getting a visual match. They are optimists, too. They generally believe that the can “get there” in terms of color matching, no matter how discouraging it looks at first.

So it takes a fairly tough color problem for a press operator to take sheet in hand, call in the prepress guy and say, “Can you help me out with a curve for this?” When the request is finally made, it is too often preceded by a long makeready attempt, tall piles of waste paper, and a series of head-scratching huddles in the viewing booth.

The pressman’s request for a curve is usually countered by a request from the prepress guy: “Do you have a sheet to density?” The answer is often either “No”, or “We had a sheet to density at the start but it wasn’t even close so we tossed it.” or, “Here’s the closest we’ve gotten so far. Can you use this one?”

It usually goes back and forth for a while, with the prepress guy taking his best guess at a corrective curve, the press operator pulling a few more tricks out of his hat, and together, they finally get an acceptable match. And so it goes until next time.

Why is this so hard?

Why is it so difficult for prep to get a sheet to the numbers, and why do press departments so often have to struggle with inadequate plate curves?

  1. It seems clumsy to take time out from a makeready session to set aside a sheet to the numbers that the prepress may or may not eventually do something with.
  2. Press and prep are in different rooms, and this makes communication difficult.
  3. Even if the press operator runs a sheet to density and sets it aside, it’s usually hard to find it when you need it.
  4. Pressmen have so much negative experience “running to the numbers” that they generally prefer to just go for a visual match.
  5. Prepress guys usually don’t have time to do dot-gain measurements of press sheets to figure out if curve adjustments are needed.

Measurements get stuck at the console

Forward-thinking operations have embraced standards-based printing and recognize the need for increased communication of press measurements. Most quality printers strive to establish communications between press and prepress via fingerprint runs, regular meetings or other techniques, but the needed transfer of information from press to prep still tends to lag.

The Missing Link

The missing link in press/prep communications has been a way to get information delivered directly from the press console to the prepress department, with no additional steps and in real time.

The problem has been that even with proper measuring equipment in use, measurement information (density, dot gain, gray balance, spots) tends to get stuck at the end of the press, and moving it out into the prepress department has proved to be a serious challenge.

These communication capabilities do now exist, and are available for printers of all sizes for less than the cost of a new hand-held densitometer.” Every prepress manager and pressroom supervisor can now have instant access to vital data from every measured sheet.

With accurate and instant data for solid primary ink values, overprints, TVI, sheet consistency and gray balance, prepress managers and pressroom supervisors can now make informed decisions and take appropriate action for accurate press-to-proof matching, with no guesswork and no need to beg for “Just one sheet to the numbers.”

I try to keep all my posts informative and product promotion-free. If you are interested in the subject, please check out my other posts and be sure to browse my website for more information on accurate color and effective prep-press collaboration.

Posted in Prepress, Press, Teamwork | Tagged , , , | 1 Comment

Silly Process Control Songs

You’d think that printers would have had enough of inadequate process control practices. But I look around me and I see it isn’t so. Oh no…Printers may be focusing on expanding into new services even as they let their core competency stagnate.

When Paul Mc Cartney wrote his catchy little disco-influenced ditty, it was his own answer to critics who thought he should be addressing more serious topics in his music, since “love” seemed to have been pretty well covered. Today, process control advocates within the print industry seem to be being hit by similar attitudes.  Conventional wisdom seems to hold that offset printing is about as good as it will every get, and that printers should concentrate their efforts on more serious topics, such as how to get out of printing and find a new field of endeavor. Focusing on process control is just….silly.

Is the process really under control?

Certainly forward thinking printers need to be looking in new directions, whether that may be web design, PURL campaigns, social media , or any of the dozens of other avenues being suggested by industry gurus. But is process control really all taken care of?

Most printers sincerely think that they are already printing efficiently and that their process control efforts are successful, but a look at the recycle bins of most printing plants tells a far different story, a story of wasted paper, wasted ink and wasted time as pressmen struggle to match proofs using manufacturing methods that would be considered hopelessly crude in most modern industries.

Most of the pieces are in place but something is still missing

So what’s the problem? With all the sheet scanning, ink key presetting, closed loop gadgetry now commonplace in modern printing plants, what more could possibly be done to improve process control?

Well, not to get too poetic about this, but the printing process too often lacks the same ingredient that is vital to Sir Paul’s favorite topic of love and relationships, and that ingredient is communication.

Press operators today have more access to vital measurement data than ever, but that data too often stops at the delivery end of the press, and never gets properly shared with the prepress department, where it could be used to form a better working relationship.

To have value, information must be shared

Answers to this dilemma do exist. Press measurement data delivered directly to the prepress department could enable them to create accurate curves for correct net TVI and proper gray balance, allowing press operators to run to target densities for fast makereadys and accurate press to proof matches. The technology exists today, and the price can be very low, yet relatively few printers have yet embraced this common sense approach to waste reduction and process control.

I try to keep all my posts product promotion-free. If you are interested in the subject, please check out my other posts and browse my website for more information on achieving accurate color and effective prep-press collaboration.

Posted in Process Control | Tagged , , | 1 Comment

The New Prep/Press Relationship

After years on opposite sides of the wall, press and prep departments are forging new bonds, and it’s a beautiful thing.

Everybody who has seen “Casablanca” at least once (and isn’t that everybody?) remembers the last line of the movie when Rick says to captain Renault, “Louie, I think this looks like the beginning of a beautiful friendship.”

A similar sort of relationship has been developing between the prep and press departments at successful printers everywhere. It is as clear-eyed and unsentimental as Rick and Louie’s alliance, and is proving fruitful in unexpected ways.

Throughout most of the movie, Rick and Louie had been friendly opponents, personally fond of one another but forced by circumstances to work at odds. In the end, realizing that their fates are bound together, they form a strong friendship and walk away into the fog of the Casablanca night, with plans to work together.

In print, the dynamics between prep and press have been if anything, even more complicated than those between Rick and Louie. We’ve been on the same side all along, and there has been full agreement that working together is an absolute must, yet true communication has been difficult to achieve, and we often failed to achieve the results of the teamwork we pursued.

One of the difficulties stems from the differences in the type of work being done, and the nature of the equipment being used. Prep departments work  “upstream”, just a bit removed from last-second time crunches that often happen once the job hits press, and they work with equipment…monitors and proofers….that tends to be relatively stable over time.

Press departments are in the absolute thick of things, when all the extra delay time has already been spent; and they work with equipment…printing presses…that can be as difficult to control as a semi truck heading through a mountain pass in a hurricane.

Finally there is the physical barrier. Press and prep departments are in separate rooms, split apart by walls that hinder collaboration.

All these factors traditionally contributed to uneasy alliances at best between press and prep; but a change has come with the arrival of color tracking software that takes full sheet measurements from the press and shares it in real time  with the prepress department. Giving the prep department a pressman’s view of  actual conditions on press makes it easy for them to make more accurate and up-to-date plate curves. The result is greater overall efficiency and better collaboration.

I try to keep my posts informative and product promotion-free. If you are interested in the subject, please check out my other posts and browse my website for more information on achieving effective prep-press collaboration.

Posted in Prepress, Press, Process Control, Teamwork | Tagged | 1 Comment

Recycling is Good: Reducing Waste is Even Better

By now, recycling is a given for nearly all responsible printers. Additional and even more significant gains in sustainability can be achieved by becoming more efficient and reducing waste from the start.

I recently visited a very large packaging printer, and like many larger operations, they used a good deal of wall space for announcements, motivational posters and performance charts. One chart that really caught my eye was the paper recycling chart. It showed a nice upward trend, with more paper recycled each month of the year, and more paper recycled this year than last.

They seemed proud of the tons of paper that they were able to recycle each year, saving trees and reducing landfill use. But I got a different message from the chart: If they are recycling more paper month after month, year after year, aren’t they also wasting more paper as well?

When waste is created through excessive makereadies, returned jobs, or lengthy fingerprinting runs, more than paper is lost, and the losses can’t all be gotten back through recycling. Energy consumed in the manufacture of the paper, pickup and delivery to and from the printing plant and used again during the recycling process is lost forever. Wouldn’t more significant gains be made by not wasting the paper in the first place?

Excessive Makeready

Print was seen for many years as a skilled craft immune from modern manufacturing trends, and the result was often excessive makeready waste.This attitude has begun to shift, but too many printers still lack the tools needed to institute real process control, in the pressroom and communicate real-time press results with the prepress department for  true efficiency.

Returned Jobs

Buyers and brand owners with specific requirements expect their printers to hit the mark, and jobs that fail to meet color quality guidelines may be rejected

“Fingerprint” runs

Printers with a commitment to quality conduct periodic “fingerprint” or characterization runs to quantify press performance and create appropriate plate curves. Unfortunately, characterization runs are hugely wasteful, easily consuming 10,000 sheets of paper at a time. And the success rate for characterizations is woefully low, as press performance shifts over time, making, making the hard-won plate curves obsolete as soon as they are put into place.

Instituting robust process control on press, real time reporting to prepress and clear definition and verification of print quality standards can all contribute to a culture of true sustainability. PressSIGN helps printers to go beyond recycling by creating efficiency and reducing waste at the start.

Posted in Green, Press, Print, Process Control, Uncategorized | 1 Comment

The Last Accordionist Standing

Some printers balk at investing in themselves because they see print as a shrinking industry, and they chose to ride it out to its soon-to-come demise rather than take a chance spending money to improve their process and become leaders in the field. To those printers, I offer the example of my friend Frank:

Accordionist

Frank was a young accordion player 40 years ago in the Midwest, when there were pretty good opportunities to get regular money coming in playing weddings, parties, and dances. The accordion market was bullish.

But Frank wanted to expand and go after opportunities in a bigger market, so he packed his instrument up and headed out to the west coast.  His timing could hardly have been worse. The British Invasion was on, the Beatles had just come to America, rock-and-roll was in charge, and in California, never a polka stronghold to begin with, interest in accordion music was in freefall from a pretty low starting point.

It would have made sense at the time for Frank to change course, get rid of the squeezebox, and find another way to make a living. Instead, he redoubled his efforts. He invested in himself, became the best, and saw his career skyrocket n what most saw as a shrinking niche.

As other accordion players frustrated with the shrinking market folded up and went home, he found himself getting more and more gigs. The market for accordion players wasn’t growing, and there was no sign that it ever would, but as the overcapacity of accordion players worked its way out through attrition, and his own reputation spread, Frank’s opportunities increased year after year.

Frank started getting gigs that he’s never even tried to get in the past. Instead of  playing dances and parties he was getting calls for recording sessions, records, and movies. He worked on jazz, rock and pop recordings with the leading musicians of the world. He contributed to countless motion picture and television sountracks. Frank became the last man standing by outlasting the competition and investing in his own growth. Frank became accordion player to the stars.

Print may not be in a period of rapid growth, and some players are dropping out, but opportunities remain for those who are willing to step up and innovate, and printers who excel continue to succeed.

A prime area for excellence in is process control for improved quality and reduced makeready. PressSIGN makes it easy to upgrade any press affordably and achieve levels of control never before possible even on the most modern equipment. Contact me, I’ll be happy to show you how pressSIGN can help you to capture the opportunities that still exist in print for the players who know how to meet new needs.

Posted in Print, Uncategorized | 1 Comment

Should Color Bars be Optimized?

It seems only yesterday that debate raged, or at least quietly burbled, regarding plate curves and color bars. “Should color bars be curved, or should they be linear?” was the question that inquiring minds wanted to know. Happily, that question has been resolved for most, if not all printers. The absolute condition of the press, as represented by linear color bars, has been deemed to be far less important that the actual net color results as measured by color bars that have received the same curve treatment as the actual images, and the large majority of printers give their color bars exactly the same treatment as the rest of the job. After all, we want the color bars to be a true reflection of the actual appearance of the job.

But what about ink optimization? (AKA ink savings, GCR, or various sorts of secret sauce). Should color bars get the same treatment as the image, as they do with curves, or should they shielded from optizimation treatments? Based on informal conversations, it seems like quite a few users feel that indeed, ink optimization should, like curves, be applied globally, to image and color bars equally; but in fact, the situation is completely different, and ink optimization is not only inappropriate for application to color bars, but is absolutely detrimental to their utility and may even represent a sort of false representation of results, particularly in a G7 enviornment.

To illustrate exactly why optimization is so detrimental to the utility of color bars, I’d like to start with a basic color bar of the kind that is frequently configured to fit onto the end-flap of package products (and thus cannot easily escape the effects of optimization, since it is integrated into the image).

This little collection of just ten patches is just enough to judge compliance to G7 specifications with great accuracy, and can either be spread across the press sheet in the traditional manner, or as stated above, hidden into the end flap of the product. It includes solids of CMY and K as well as 25 50 and 75 percent patches of K and CMY grays, A perfect, minimal and effective QC tool. But will it withstand ink optimization?

To see, I have integrated it into some images we all know very well.

There they are, our three favorite girls, the SCID musicians, with a G7 color bar in the corner to assure that all is fine and in perfect gray balance (subject to the limits of web viewing).

In order to simulate a perfect storm, I have created a rather serious color imbalance, the kind that the G7 specification is designed to monitor and control. In this case, while solid ink values have remained perfectly constant, a shift has happenned in the Cyan and Magenta TVI, causing a shift in gray balance that is equally visible both in image and color bars.

The image here is seriously out of balance, but the color bars have done their job. The 25 50 75 CMY gray bars show the same shift we see in the image, allowing process control specialists to spot the unacceptable color variation and reject the job.

Now let’s take a look at the same imagebut this time including aggressing GCR/ink optimization.

This image looks like at first like a victory for ink optimization. This image of the musicians, which were subjected to the same imbalances as the unoptimized image, looks better than the unoptimized image. There is still shifting of the clothes, the flesh tones, the background, but the shifting has at least been reduced. But what about the color bars? Oh my! They are absolutely perfect! Any objective measurement of the color bars would show that we have a 100% perfect job, with complete compliance to G7 in every way, But there is one small problem. The actual image, while better than the unoptimized image is still visually unacceptable, yet based on the color bars, it would have passed QC inspection. How did this happen?

If we peel away the black to look at CMY and K separately, we see that black tints are reproduced with tints of black, amd CMY tints are reproduced with tints of CMY, just as expected.

Performing the same operation on the optimized file, we see that the black tints are reproduced using tints of black, and CMY tints are reproduced with….tints of black! They have completely lost their predictive power as QC devices, and no amount of TVI shifting will cause the slightest shift in gray balance.

With optimization, the image fares less well than the color bars. While GCR does an excellent job of protecting neutrals from shifting, this effect diminishes as we move away from the neutral axis to more saturated colors. Since most images contain many colors, they will invariably tend to fare worse than color bars designed with perfect CMY neutrals.

Does this mean we shouldn’t use ink optimization? Not at all. Optimization/GCR of images with non-optimized color bars is an excellent way to save ink, shorten makeready and increase stability on a wide range of images. But optimization is entirely inappropriate for color bars. Optimized G7 color bars can produce “false negatives” indicating a G7 compliant job even when TVI values and corresponding image appearance are seriously shifted. Be sure that across-the-sheet plate colorbars are excluded from the optimization portion of the workflow. And if colorbars are integrated into the image, such as patches hidden into packaging end flaps, be sure that any image optimization is done off-line, prior to plating, so that color patches can be excluded.

 

Posted in Gray Balance, Offset, Plating, Prepress, Press, Process Control | 1 Comment

We’ve Got a Guy Who Does That

A big part of what I do as a color consultant involves helping printers to achieve better quality and efficiency through process control, color management and enhanced communication.  Not all printers understand the need at first, but most do finally see how their operation can achieve gains that make the small investment worthwhile.

One of the toughest challenges is answering the manager who says, “We’ve got a guy who does that”. It sounds likely at first. Most shops do have somebody (usually in the prep department) with an interest in color management and lots of ideas for improving the operation. Some of the very best color consultants I know were once guys like that, carrying out a full load of retouching, assembly, troubleshooting and platemaking duties in the course of a day, and doing their best to handle color management duties in their free time between rush jobs.

But is it really accurate to say, regarding color communication issues, that “We’ve got a guy who does that?” I’d say that it’s very unlikely, in part because even if you already do have a guy who could do that, he probably isn’t being allowed to.

I mentioned the many wonderful color experts that I know who started off in  (often) the prep departments for quality printing companies, then eventually went off on their own to pursue careers as independent color experts. Why did they leave good jobs to take their chances living by their wits? (Assuming that it wasn’t for the money, and I smile as I say this). I think that there are several good reasons, and these reasons also explain why you probably don’t have a guy who does that:

  1. Really expert color guys aren’t that easy to find. There just aren’t that many real color experts hanging about.
  2. Expertise takes practice. Even the best in-house color experts are usually too busy with production work to focus on the details of color management and process control, and don’t always get a chance to polish their CM skills.  We all know that this is true: when a rush job needs to get out the door, everything else stops, and these days, with personnel cutbacks at every corner, nearly every job is a rush job, with barely enough hands on deck to get it out. Color management is a luxury when you are scrambling to get the work done.
  3. Color production is collaborative. There is really no such thing as individual color management, because it involves all sections and all departments. Every job travels through multiple departments, which means that a color expert, even a very skilled on, working in a single department, can improve only a portion of the process.
  4. Establishing good color management and process control requires that procedures be set up and followed, and these procedures usually require a new kind of relationship between press and prep departments, a relationship where the press department is required to be responsible to the prep department in hitting specifications and reporting to the prep department. One problem: Peers don’t tell peers what to do. The prep manager (who is usually the in-house color guy) has no authority over the press manager, and so can’t  really demand anything at all from him. Result: the required new procedures are never put into place.
  5. Authority flows downhill. This is an extension of point 4. The in-house color guy rarely has the authority to make significant changes, and the plant manager or COO rarely has the expertise or time to implement these changes himself. Result: as above, very limited success.

Even when there is a very talented color guy in-house (and it happens), he will rarely have the time or authority to make the needed changes needed for real improvement in the overall process. The role of the outside color consultant is not only to provide a level of  expertise and experience not often available in-house, but also to bring in the independence and perspective that can only come from the outside. The outside color expert is often the push that is needed to allow the inside color expert to finally be allowed to do his job.

Posted in Prepress, Print, Teamwork, Uncategorized | Tagged , , | 1 Comment

The 6 P’s of Presswork (It’s not just the pressman)

Hat tip to Brian Lawler  for posting this photo of female press operators at California Polytechnic State University, San Luis Obispo on his blog.

The six P’s of presswork and putting them all together

A recent internet discussion asked the question: “What is more important, the Pressman or the Press?, and while we refrained from commenting on the matter at the time, we certainly did have strong opinions, at least on the premise, if not the conclusion.

The idea seems to be that, in order to have success in presswork, we need to have either a very good pressman or a very good press, and the debate centered on which, in the end, is more important. What an odd idea! We need both, of course, but neither by itself  is enough to assure quality or efficiency. The pressman (or woman) needs more than good skills and a good press to achieve amazing results-they need the 6 P’s of Persistence, Proofing, Plating, Process Control, Personal Communication (and a few others) to excel as part of a team.

  1. Persistence: Great presswork isn’t about getting that one great job out. It is about doing it over and over, day after day. After years and often decades of seat-of-the-pants press operation, it takes commitment and persistence to change over to a process controlled approach to press work.
  2. Proofing: Yes, Proofing is a press issue, because even a good pressman with a good press can’t match a bad proof. As I like to say, “Bad proofs make bad pressmen.” A pressman can’t expect to match a bad proof by running to the numbers, and long experience with bad proofs has convinced too many otherwise good pressmen that running to the numbers just doesn’t work.
  3. Ph, packing, paper: We’re putting all these together because they all belong to the general class of Technical Things That Must Matter.” In other words, we know that they are all important, even of no single factor alone can assure good press work. We could add dozens of other factors here that don’t happen to start with the letter “P”: roller pressure, press speed, oscillation, conductivity, ink water balance, ink viscosity, and so on. From the perspective of maintaining quality, they are all important, but taken together, the most important thing is consistency. On a press, maintaining consistent conditions faithfully in all parameters is more important that perfection on any single factor.
  4. Process Control: Building quality requires continuous improvement, and that in turn requires process control. We can’t improve a process until we first are able to control it, and then track it over time to monitor changes. Many otherwise good press operators treat each job as a unique event, and miss the opportunity to improve long -term results through process control and trends tracking.
  5.  Plates: Press operators have limited control over TVI, or dot gain, so much of the responsibility for achieving proper target values here lies with the prepress department, particularly in the plating area. When the press is supplied with accurately curved plates, it is easy for them to achieve  correct TVI and thus, correct gray balance as well. When the plate curves are not matched to actual press performance, press operators will resort to making density changes in a effort to visually match the proofs, resulting in imperfect results and destroying any chance of building long-term improvement.
  6. Personal Communication: Good presswork requires teamwork between press, prep, proofing and plates; and teamwork requires communication. Everything comes together at the press, so the press operators are in a good position to know what is working and what isn’t, yet it is all too rare for that information to find its way back to the areas where other team members could make changes to help on press. Opening channels of personal communication can do a lot to contribute to effective press work.
Posted in Plating, Prepress, Press, Process Control, Teamwork, Uncategorized | Tagged , , , , , | 5 Comments

Where do Packaging Buyers Come From?

Where Print Buyers Come From

 

(And how is a box different from a poster?)

I worked for many years with print buyers from the entertainment industry-those hip and trendy people who bridge the space between the glamor world of Hollywood and the grubby trenches of the commercial pressroom.  Entertainment media buyers were always on press OK’s, calling out color changes right through the run, trying to get the perfect “look” that captured the feeling of the movie and somehow, mysteriously, transmitted that feeling throughout the print campaign.

Standards were absent, not talked about and not even thought about. Pressmen did whatever it took to Get That Look, no matter how long it took. The goal of the movie ad campaign was to transmit some elusive emotional connection that, in the eyes of the print coordinator, defied measurement.

How different from the print buyers that I work with in packaging!  Demanding, matter-of-fact, and with no illusions of stardom, packaging buyers seem to have come from another planet, so I wondered, where DO packaging print buyers come from?

Well, in not a few cases, they come from manufacturing. Some of the best packaging print buyers I know started off doing QC for the products that went into the package in the first place. When you are QCing a product, you look for conformance to specifications. It is different for every product, of course, but in almost all cases, the evaluation is done objectively by measurement.

Is this food portion the correct weight? Does this component have the correct electrical properties? Does this fabric have the specified tear resistance? In every case the question is answered the same way: Measure it and find out.

For manufacturers who make a product to specifications, measurement is a given,  and when they specify a package for their product to go into, it makes  perfect sense to use the same approach.

Packaging print buyers know that emotion and feeling are unreliable guides when it comes to maintaing a brand color throughout a print process that may take place at multiple locations over an extended period of time. For these buyers, using the same tried and true methods of measuring for quality that they used for doing QC on the product itself comes naturally.

Printers who understand their buyers and use measurement to produce a consistent print product are on the same wavelength as their customers and build an easy and harmonious relationship. Fortunately there is a way for both buyers and printers to maintain this relationship smoothly on both sides. PressSIGN Buyer enables buyers to specify and verify the accuracy of brand color in their own offices, and PressSIGN Pro enables printers to measure and track their printing accuracy while the job is being printed, and provide detailed reports to their buyers for no surprises later on.

Posted in Flexography, Print Buying | Tagged , , | 1 Comment

Why Can’t My Offset Printer Match His Own Digital Samples?

The most frustrating continuing problem in the fabric and garment field is color matching. I’m not talking here about matching solid colors in large-scale textile production, which is a separate problem. I mean matching the designer’s intention when printing patterns and designs, particularly in a dye sublimation environment. Why is it so difficult for printers to match color?

First of all, dye sublimation is an admittedly difficult craft. There are variables in ink, presses, fabric, the pressing process and 1,000 other places. In addition, the colors being matched are often very difficult, but why is it that printers often can’t even match their own digital samples?

Part of the problem lies with the nature of fashion design itself. A product may contain pastels, neutrals, bright colors, dark colors and light colors, all within a single design. Hitting all those colors can be difficult, especially when an adjustment to make one color better may only make another color worse.

But the real problems go much deeper. Fundamental flaws in every step of the process contribute to the problem:

  • Improper lighting and viewing conditions
  • Uncalibrated monitors
  • Incorrect application settings
  • Poor color correction techniques
  • Incorrect working color spaces
  • Uncalibrated digital printers
  • Inconsistent offset press results
  • Inconsistent heat transfer practices
  • Paper and ink variations

But by far the biggest obstacle to accurate color matching is the complete lack of standards or process control practices in the dye sublimation printing field. I will be covering all of these topics in future posts.

Posted in Dye Sublimation, Offset, Uncategorized | Tagged , , , , | 1 Comment

Thin Slicing the Color Buy: Accurate Color from a Sea of Possibilities

The colors most important to your printing client many be any of the 16.8 million different colors that can be defined within the printing process: How can you possibly determine if your printer has done an acceptably accurate job of matching these target colors when they represent the tiniest needle in a vast color haystack?

It’s a puzzling problem that has troubled buyers for as long as they have been specifying print. We can’t possibly measure every single color, and the standard alternative of making a gut decision based on eyeball judgment is unreliable and prone to error. How can we make an accurate and objective evaluation of color quality without drowning in a sea of data?

“Thin Slicing”, a term coined in 1992 by Nalini Ambady and Robert Rosenthat suggests an effective way out of this quandary. Thin Slicing refers to the ability to make rapid yet accurate judgment based on very limited data. Is there a way that we can “Thin Slice” print buying?

Really, perhaps without quite knowing it, print buyers use thin slicing every time they evaluate a color print job. The buyer may not know the countless factors that can affect the color match of a printed job, but they are still able to make a quick judgment based on a narrow range of patterns that affect overall performance. That’s thin slicing, and it works.

But there are limitations to the intuitive, eyeball-based evaluation process. It is inevitably subjective and liable to outside influences of all sorts. It doesn’t lend itself to documentation, and unconscious bias is hard to avoid. So can media procurement secialists find an objective and quick way to “Thin Slice” their print buy to assure the best possible quality/value ratio?

There is a solution: thinslicing can be automated. Modern press measurement systems make it possible to collect, display and analyze that thin slice of the twenty or so absolutely essential metrics that represent accurately the overall quality of the reproduction. The best of these systems deliver this information in a way that is immediate, sharable, and vivid.

What are the essential elements of color measurement that make print thinslicing both effective and understandable?

  1. Primary colors: Traditionally thought of as “density”, today we measure the entire color data of Cyan, Magenta Yellow and Black solids. Despite its many years of use, density alone is a weak predictor of overall color accuracy. Colorimetric measurement of primary hues provides a better guide.
  2. Overprints: The three possible 2 color compinations of the primary colors produce the overprint colors of Red, Green and Blue. These colors are well defined by ISO standards and are strong indicators of overall color accuracy.
  3. TVI, or Dot Gain:  TVI measures the quality of the 90% of the image that is not composed of solids. By measuring that great middle area of color reproduction, TVI or Dot Gain, provides and even stronger indicator of overall color accuracy than prinmaries or overprints.
  4. Gray Balance: This is affected by all the other components of primaries, overprints and TVI. Gray is also the color most easily discerned by the human eye. Put it all together and gray balance is the single strongest indicator of color accuracy.
  5. Consistency: A sheet that is too dark on one side and too light on the other side may be great on the average, but is not acceptable as quality printing. Consistency across the sheet and throughout the run is an indispensible element in quality printing.

In choosing a color verification system, look for one that tracks all 5 factors, and delivers them instantly to all parties.

Posted in Print, Print Buying, Process Control, Technology, Uncategorized | Tagged , , , , | 1 Comment

Press Cycles

 

presses fluctuate in dot gain

By now, if you have been paying attention, you have probably come to realize that an offset printing press cannot be controlled through density alone.  The success of the G7 process has demonstrated that gray balance is the single greatest determiner of color appearance; and while a number of different factors contribute to gray balance, it is primarily determined by dot gain, or TVI.

Continue reading

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Racing to Success in the Pressroom

 

Printing seems like a world apart from the competitive world of NASCAR racing, but a recent conversation with a friend convinced me that the two have something very surprising in common.

My friend works in the quality control department of a well known NASCAR team, making sure that every component in the car has been thoroughly tested and has passed a rigorous battery of inspections. So when I asked him the most common cause of failure on the race course, I thought he would point to an especially failure-prone engine component. But he didn’t.

“The most common reason for losing on the track”, he said, “is poor communication between the driver and his pit crew.” Continue reading

Posted in Offset, Prepress, Print, Teamwork, Uncategorized | Tagged | 1 Comment