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Story Teller | CEO | Traveler

You are here: Home / Archives for density

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

June 28, 2007 By Jim Raffel Leave a Comment

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 … [Read more...]

Filed Under: calibration, color, color bars, density, measurement, press run, process capability

#44: Why process control works

November 17, 2006 By Jim Raffel Leave a Comment

Earlier this month I was visiting a customer who utilizes multiple ColorMetrix licenses to monitor and control; plate making; proofing; and pressroom. Several years ago this customer used ColorMetrix in his plate making operation to uncover a processor replenishment problem that not even the plate … [Read more...]

Filed Under: blogging, density, process capability, TVI (Dot Gain)

#40 Grey Balance & Printing like a Master

October 5, 2006 By Jim Raffel Leave a Comment

I have written before about the Printing across borders initiative and late last week made a post to the mail list which I feel generated a very good response. My post shown below was in response to a post questioning the GRACoL MasterPrinter‚Ñ¢ program: It stands to reason that that a printer with … [Read more...]

Filed Under: calibration, color, curves, density, GRACoL, gray balance, ISO, measurement Tagged With: color, color process printing, color space, felix brunner, flexography, gamut, grey, master printers, printer, printers, Printing, printing process, process controls, tone reproduction

#32: Tales from the Press Trial (Part 2)

April 28, 2006 By Jim Raffel Leave a Comment

This week I will be providing more information about the MacDermid Printing Solutions Stabil-X press trial April 17th and 18th . This week I will review the variation data from two of the trial conditions: STX opt – Stabil-X blanket run at optimum packing level Press std – The set-up … [Read more...]

Filed Under: blogging, curves, density, measurement, process capability, TVI (Dot Gain)

#31 Tales from the Press Trial

April 21, 2006 By Jim Raffel 2 Comments

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. We ran five different conditions … [Read more...]

Filed Under: color, color bars, curves, densitometers, density, measurement, press run, process capability, TVI (Dot Gain)

I still love the smell of ink in the morning

April 19, 2006 By Jim Raffel 2 Comments

Over the coming weeks I will be writing a great deal about my last two days in Chicago. Kevin Kocher of MacDermid Printing Solutions (offset blanket manufacturer) invited me to a press trial of their new Stabil-X blanket. So, right about now if I was one of my readers I would be thinking how … [Read more...]

Filed Under: blogging, curves, densitometers, density, measurement, press run, process capability, TVI (Dot Gain)

#27: Measuring TVI on Inkjet proofs is Meaningless

March 9, 2006 By Jim Raffel Leave a Comment

Part 5: I should start by saying I have covered the topic of using graphic arts densitometry to evaluate inkjet proofs once before. Back in July ’05 GN#5 addressed this same issue so you may wish to refer back to it. I considered changing this topic, because the title is a bit inflammatory. … [Read more...]

Filed Under: density, inkjet, TVI (Dot Gain) Tagged With: densitometry, inkjet, inkjet printer, inkjet proofing, measuring, notebook, proofs, tvi

For Erik In Response to: “#26: Density is king”

March 1, 2006 By Jim Raffel Leave a Comment

Erik: Michael Litscher (Colormetrix CTO) provided this and said that a picture is worth a thousand words. I hope this helps in your understanding of the Visual filter. … [Read more...]

Filed Under: density

#26: Density is king

February 28, 2006 By Jim Raffel Leave a Comment

Part 4: TVI is not measured it is calculated from density which is king. All the other values our modern densitometers display are simply calculated values from the densities the instrument measures. In short, all a densitometer does is transmit a predetermined amount of light and then measure how … [Read more...]

Filed Under: density, TVI (Dot Gain) Tagged With: calculate value, cyan, densitometer, density, ink, inkjet printer, magenta, measuring, notebook, printing press, tvi

#25 TVI Notebook (part 3 of 5) TVI is not a bad thing

February 21, 2006 By Jim Raffel Leave a Comment

Part 3: TVI in and of itself is not a bad thing: Back when TVI was called Dot Gain, I remember going into print shops and having pressman tell me “No, we don’t have any dot gain.” This was not ignorance (they knew they did), but instead a misconceived notion that TVI was a bad thing. I always … [Read more...]

Filed Under: density, TVI (Dot Gain) Tagged With: dot gain, ignorance, notebook, pressman, print shops, tvi

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