Archive for the 'color' Category

#65: Color in the Specialty Graphic Market & SGIA Live

I will be attending the SGIA (Specialty Graphic Imaging Association) conference and expo in Orlando next week. As I reviewed the conference sessions and expo web-site it became clear this would be a great opportunity to get back to writing for JimRaffel.com. Since GraphExpo I have been busy with show follow-up and have not had the time to write a Golden Nugget. So, next week keep an eye on JimRaffel.com for daily posts, and at the end of the week I will email an overall digest format of the week’s posts like I did after GraphExpo.

Color is becoming an increasingly important factor in a market that by and large (there are always exceptions) has not paid very close attention to color. In the three years since my first SGIA experience I have kept tabs on the specialty graphic market and have even sold a fair amount of software into the industry. What better indicator could there be that color is becoming increasingly important?

The specialty graphic market is making the move to digital at a rate that exceeds that of traditional graphic arts. I believe the move to digital is driving the increased interest in color. Digital printing allows specialty printers to move into markets once controlled by traditional printers, and vice versa. As a result specialty graphic printers are now dealing with more color critical customers like consumer product companies.

I plan to address three themes in my SGIA Live coverage:

  • Increased interest in color verification and process control
  • The move to digital imaging and printing
  • Cross-over with traditional print as the industry goes digital

Remember to keep your eyes on JimRaffel.com for daily show coverage.

#61: Get Over Your Measurement Fear

Fear lies clearly in the path of all roads to success. In order to succeed at anything in life one must first get past the fear associated with the task. Think back to the days when you were learning to throw and catch a baseball. Throwing was no real problem was it? No fear there. Now think about learning to catch the ball. Remember having to get over the fear of being hit by the ball? Remember the coach telling you to keep you body in front of the ball and never let the ball get by you even if it hits you and not the glove? Most of us have been hit by enough baseballs to know that it’s an irrational fear as it relates to succeeding as a baseball player at any skill level.

Measuring color with passion, persistence and pride as discussed in #60 is all about getting over your fear of the results. The first time someone brought up color measurement you probably thought “Oh no, what if the results are bad? What will we do then?” Once you started measuring, however, you realized that the numbers helped you solve many more problems than the numbers alone uncovered. (Look back at #60 and read about the air exchanger in the web pressroom.)

If you do not measure color you cannot control color. If you cannot control color you cannot increase productivity and profitability in every phase of your printing business. Assume for a moment that the above statement is true. So, by fearing color measurement, you really fear increased productivity and profitability! Does that even begin to make sense? No, fear of color measurement is as irrational as the fear of getting hit by a baseball while playing the game. I know you want to be a printer who operates in the profit leader category of the PIA/GATF ratios, so get over your fears of color measurement and start measuring color today.

#58: I Still Love the Smell of Ink in the Morning

I have been so immersed in virtual proofing over the last several posts, that I had almost forgotten how much I still love the smell of ink in the morning. Last week I had the privilege of spending two days assisting a customer in the set-up of our software primarily for use as a pressroom monitoring tool.

The experience reminded me of #55: Just Measure It! The customer is a web offset shop and has the same problem that most of our digital printing customers have (Oh, I love the smell of toner in the morning too!). The problem is that their press product is finished product and has no trim. Color bars are not an option on production work, and changing the design to incorporate color swatches would also be impractical at this time.

The solution turned out to be the same solution we employee with our digital printing customers. A test form is put on press twice a day and the results of those measurements are used to verify conformance to density standards across the web. A second control strip can be scanned to gather other print metrics like TVI, Print Contrast, etc.

The results in a sister shop have been improved consistency from day to day and the ability to monitor changes in density and TVI from morning (cold press) to afternoon (warm press). In a perfect world I would love to see color bars on every job, but we thought outside the box and found them a solution that allowed us to measure. Once they started measuring quality and consistency improved. Profitability and productivity are never far behind quality and consistency improvements.

I raise the challenge again…today start measuring something in your color workflow that you are not measuring today. Within seven days those measurements will point the direction you need to go to improve the quality and consistency of that process.

#57: On Virtual Proofing Thoughts after IPA

While at the IPA Technical Conference earlier this month, I had the opportunity to run through the evaluation of the five virtual proofing systems on display. The combination of the evaluation experience and the release of our ProofPass.com [Virtual] product have solidified my thoughts on virtual proofing at this moment in time.

Virtual proofing will continue to replace hard copy proofing in the perishable weekly printing market. In this very specific market which includes weekly news magazines, Sunday newspaper supplements, and weekly sales mailers virtual proofing will replace hard copy proofing over a relatively short period of time. While the obvious reason (and a good one at that) is cost, I feel the real reason for a rapid move to virtual proofing in this market is time compression of the production cycle. The Sunday supplement market competes almost exclusively on price and the weekly news magazines compete almost exclusively on up to the minute in depth coverage of the week’s big news stories.

In other printing markets such as packaging, specialty products, and high end coffee table work virtual proofing will make significant gains as the intermediate proof. I do not, however, feel that the contract press side proof will become a virtual proof in this market anytime soon. I truly think it will take a full work generation to see virtual proofs replace physical hard copy samples in this market. I pick the full work generation, because we will need individuals in charge who have “grown up” looking a critical color on an LCD monitor.

Another factor to consider in the virtual proofing world is that those $2,000 to $5,000 LCD’s are the new proofing consumable. As you plan your virtual proofing strategy remember to factor in monitor replacement every 12-24 months depending upon the number of hours the monitor is actually turned on each day. Also, watch high end monitor prices drop like rocks just as flat panel televisions have.

So, what did I think of the IPA soft proofing evaluation? While the evaluation was blind I saw two of the systems stand out head and shoulders above the rest of the pack. You need to do your homework before investing in any of these systems. Even with the best two I would not replace hard proofs except for perishable weekly work.

#54: Some Thoughts and Comments about Soft Proofing

In #53 I listed a bunch of color resources I had found on the web. I was looking because we are putting the finishing touches on the first beta release of our ProofPass.com soft proofing verification module. For me this project has turned out to be about the journey not the destination. Of course the destination which is a viable commercial release of the aforementioned product that we hope to make lots of money on is not a bad place to end up.

The Journey, however, has been like going back to school for a guy so grounded in the color science of the physical ink on paper side of our industry. I have come to the conclusion that a monitor is just another “black box” that creates color from my perspective. Just like a hard copy proofing system, a conventional printing press, or even a digital printing press is. So, that means if it can be measured it can be controlled.

The key to successful soft proofing appears to lie in the color management behind the system(s). I recently had the opportunity to view and measure eight displays powered by the soft proofing technology of three vendors all in one place. All were powered by Macs, but the displays came from two manufacturers. In our quick and dirty technology demo three of these systems (all under the control of one organization) came in with a very tight peak Delta E of only about 3 between the systems.

Monitors using the other vendors soft proofing technologies fell further out (as the software was pre-beta at that time I am going to omit any further numbers). The verification module did, however, catch that one of the monitors had been profiled to the wrong white point (let’s just say I was pretty pleased with the new toy we built!).

Surround lighting and viewing conditions will make any quality soft proofing system work or not work. I have read papers on subject, I have tested it myself, and I have spoken to people who have done extensive testing of the systems. The less surround lighting (other than your 5000K light booth) the better. The surround and viewing conditions should be identical to the ultimate conditions when you make your monitor profile. One of the biggest factors I have seen to making a good or bad monitor profile is surround lighting.

It is clear to me that monitor proofing is here to stay in our industry, and is also highly viable when properly utilized. While I do not see monitor proofing replacing hard copy proofing altogether, I do see it replacing hard copy proofing in some applications very quickly. In other areas I see monitor proofing replacing many of the internal proofing iterations prior to the hard copy “contract proof” used press side. Much of this is going to depend upon how tight the deadlines are for being able to change copy, and the perceived quality level of the work being produced.

#51: Proper Press Fingerprinting takes Commitment

In this installment we will address the third question Dale raised in #47. Dale’s first two questions got answered in #48 and #49 which can be reviewed at JimRaffel.com.

Now, onto Dale’s third question:

3. In fingerprinting our presses, we’ve run up against the dreaded “Hurry up and do it, but don’t put too much work into it.” What are your recommendations for impressing upon the higher ups that doing color balancing and working out the calibrations takes time?

I would suggest you have your management read JimRaffel.com. The reality, however, is that the culture required for completing successful fingerprints starts at the top and does not get worked up from the bottom. I spent the better part of the first ten years of my career trying like heck to change the culture of a printing company (now out of business I might add) from the echelons of lower and middle management. While I hesitate to use the words “It can’t be done” (and not because my Mom the English teacher told me to never use contractions), I believe this is one place where this expression applies.

I have been very fortunate in my career. At 21 years of age before I had even graduated from RIT I was able to observe one of the pressruns used to set the early SWOP press standards. A lot of very smart people participated in this run and the scientific procedure was impressive. Then, not a year later I was the guy doing all the print quality measurements on a brand new Baker-Perkins G14 that cost about 9 million dollars back in 1986. While I was just one member of a very large team, the owner of the company made it quite clear that he was not making his first lease payment until we had a press that was printing correctly.

Over the next 3 years I had the same responsibility as 2 more new presses started up in that facility. In both cases, the purchase contract was very clear that we did not make lease payments until the press met our print quality standards. While the company in general had an difficult culture, in the case of all three of these press startups the message from the very top of the organization was “Do whatever it takes to get a solid press fingerprint.” The reason was simple, without a solid benchmark at startup how could we ever know what condition the press was in later?

Dale, it takes a great deal of time, money and a great team to perform a successful and meaningful press fingerprint. During the press startups above, the fingerprinting process could go on for a week or more. The press was fully crewed and lots of paper was run during this time. All the support staff had to be available from pre-press, plating, maintenance, materials handling, and more. I don’t think it’s an understatement to say that these fingerprint cost $100,000 or more.

Now, not all fingerprints need to cost that much. I took part in a very successful fingerprint within the last 30-days that probably cost no more than about $10,000 including our software and professional services time. It is, however, a matter of scale. The client for the 10K fingerprint was simply making the first investment in end-to-end color process control. All the key players in this organization participated in the meetings and remained on-site during the 2 (14 plus hour) days required to complete the fingerprint.

The results on the second day (and in follow-up calls the last three weeks) continue to be impressive. In the case above the press is not brand new but instead a fairly old and well worn pieces of iron which is now printing at an impressive level.

My conclusion is simple. If senior management of a PRINTING company is not willing to invest the time money and effort necessary to perform a proper PRESS fingerprint, one must really question the value of performing the fingerprint.

#48: Make Proofs That Match Your Press

Since #45 in December we have been discussing resolutions to improve the quality of your proofs. In order to gain the full benefit of this installment one should have read and implemented the suggestions in #46 & #47.

Proceeding forward it does not matter if you are utilizing a methodology like GRACoL G7, or a more traditional color management approach. In either case you will include a target on each print job with the same color bar swatches that you output on the proof (#46). This will allow you to measure the press ok sheets and compare them to the proofs, thus building even a larger statistical database to call upon.

When utilizing software like our ColorMetrix and ProofPass.com products for process control and print certification purposes it does not matter if you are using a methodology like G7 or traditional color management. While there are some new formulas out there to run the collected data through the tried and true colorimetric data (L*a*b* and derivatives along with some version of Delta E), do a great job comparing two similar or dissimilar imaging systems.

Unlike density and dot gain values which must be used with pigment sets designed for 4/color process printing, L*a*b* values allow the comparison of an inkjet proof and an offset press sheet. This is possible because we are looking at the actual colors, not values derived from a formula which assumes a certain pigment set.

Not only will you be comparing the measurements of the proof to the press sheet, but you will be building a history of what is a “normal” print condition of each press and paper combination. Some refer to this as finding the “sweet spot” of the printing press.

Overall, as your volume of collected data grows you will be able to refine the system in small steps by reviewing the proofing and press information both independently and together. Using numeric results, charts, and graphs you will be able to see small differences in color that can be adjusted for over time. No system is stable over time, so continuous monitoring is a must in order to maintain stable color.

#38: Enterprise Color

We have been spending a great deal of our time this summer selling and supporting our new ProofPass.com servers. The increased interest in our server technology has promoted us to think about how the servers are being utilized, and why they are being purchased. We believe one answer is enterprise color.

Enterprise color involves setting up gold standard or baseline colors based upon industry standards, but tweaked and tuned specifically for the needs of the organization. This tuning of the colors is not typically an inexpensive practice and as such is not something the enterprise wants to risk losing control of.

Enterprise color involves multiple geographic locations and/or large facilities with measurement occurring in far flung locations. Centralization of all the measurement results on a server accessible from almost any web enabled device is critical for enterprise color. Imagine a manager being able to review problem color results from a web enabled phone half way around the world. This can and has been done by ProofPass.com server customers.

Companies that practice enterprise color view it as a strategic advantage which they wish to protect. Most companies large enough to practice enterprise color have very tight firewall polices between the enterprise and the rest of the world. ProofPass.com addresses these concerns by; bringing the server inside the firewall; operating over standard web browsing ports 80 and 443; and operating on one of several secure server technology platforms.

It is our opinion that enterprise color can not be accomplished with legacy software applications utilizing proprietary databases modified to communicate through proprietary ports to proprietary servers. The ProofPass.com solution was designed from the ground up to be an internet based solution utilizing an open database. If you would like to learn more about our ProofPass.com enterprise color server solutions please visit our web-site ColorMetrix.com or contact me.

#31 Tales from the Press Trial

On April 17th and 18th I had the pleasure of participating in a press trial with MacDermid Printing Solutions to evaluate the effectiveness of their new Stabil-X offset printing blanket. I am writing today about the TVI curve of the various trial conditions.

Stabil-X TVI

We ran five different conditions during the course of the trial. All the trials shown in the graph involved only one printing unit running magenta ink. The curves also represent the averaging of 10 press sheets. The five trial names and descriptions are:

  • STX opt - Stabil-X blanket run at optimum packing level
  • Press std - The set-up of the press when we arrived
  • STX -.003 - Stabil-X purposely under packed by 3 thousandths
  • STX +.002 - Stabil-X run at 2 thousandths over
  • STX +.004 Stabil-X run at 4 thousandths over

As one might expect the STX -.003 has not only the lowest TVI, but also a very poorly formed curve. A pretty good example of why you do not want to run your press under packed.

The Press std curve shows how this shop runs the press on a regular basis. Notice the hump in the TVI curve from 25 to 50%. Not an uncommon condition on many presses.

The STX opt curve is much smoother than the Press std curve, missing the hump from 25 to 50%. Also, run at virtually the same densities the dot gain (50%) and overall TVI is lower at all points than the normal press set-up.

Even the two STX over pack conditions produced smoother overall TVI curves than the press standard set-up. While the TVI is higher in most cases this is to be expected when adding that much squeeze to a blanket that really does not need it.

I will continue to write about this press trial for a least 2-3 more weeks. There is a great deal of data and information to still go over. I even have some sheets here I will be doing additional readings on.

If you would like more information about the MacDermid Stabil-X blanket, please contact me and I will put you in touch with the right people at MacDermid.

#21: The Reality of Remote Color Diagnostics

*** Golden Nugget #21: The Reality of Remote Color Diagnostics ***

While at the PIA/GATF Color Management Conference earlier this month I had a chance to visit with a customer who uses our new ProofPass.com proof certification and remote color diagnostics solution. Our customer is responsible for the operations of a large pre-press facility and for this article we will call him John Smith.

Recently John was out of the office at a user’s group conference for another piece of critical equipment or software in his facility. John got a frantic call from the office that recently produced proofs could not be matched on press. John’s first concern was to check on the current state of his inkjet proofing system. He asked that a new proof be made and scanned into the ProofPass.com database.

Because the ProofPass.com database is internet based, John was able to login to the ProofPass.com web-site with his account information and see the color of the swatches just measured along with almost every print metric a person could wish for. The visual swatches in ProofPass.com proved to be the key to solving this problem. Before John even started looking at the delta E numbers he could see that the side-by-side color comparison of the reference proof (gold standard) and the recently produced proof did not match.

Obviously doing this comparison on a color calibrated monitor in proper viewing conditions aids in the correctness of the colors being viewed. Remember, however, that ProofPass.com is not intended to display “contract color” but instead to provide the user a visual reference of the relative color difference between two color swatches.

The shift observed was quite large, and in the overall direction of a much “warmer” proof. While almost every swatch passed the delta E test in place (I believe John has since tightened his delta E tolerances) it was this overall shift vs a single patch shifting that was causing the problem. John runs a simple device next to the inkjet proofer that plots both temperature and humidity over time. In the period of time that the color problem had occurred humidity had dropped from about 60% to 20%.

In conclusion, remote color is clearly the most exciting technology to hit our industry in many years. While we have all seen the potential of remote “soft proofing” I believe the broader category of remote color is going to provide much of the excitement and growth in our industry over the next five years. It promises to be a heck of a ride, so climb aboard and let’s see where it takes us.