Search results

How about this- you could increase the laser power on plates for that machine ( to increase dot size) or try another plate manufacturer that would increase dot size without changing the laser power. . . .a little testing- Dan 412.889.7643

Have you tried adding reducer to print 'fuller' to match the other presses? Grey Balance is achieved when Magenta/Cyan are the same midtone gain and Yelo is -2 (with ISO inks). M/C-10 Y-8 = light grey M/C-24 Y-22 = dark grey

Here's a thought - make a 1/4" patch in your color bar with 3% dots of Y-M-C-K. NOW you can see any slur of doubling - hard to see on a 40-50% dots. . . Dan 412.889.7643

Maybe you could add a reducer to get a little more gain to match the other machines? Just a thought. . . .

Delta differences vary - depending on the color. If you look at the CMC elliptical Chart showing Lab color space you'll notice that 'Reds' have a smaller eclipse than 'Greens'. Therefore we will accept larger variations of Greens than Reds! Note the size of neutral grey - very small! A 2% dot...

Try this- create plate curves from these numbers. If you can create the correct density & 'dot area' numbers on press you'll have a great press sheet! I did this years ago on a 2 color press. Dan

See the attached document. Here are the "Wanted" dot area numbers for the RIP. Questions? Call! Dan 412.889.7643

If you can't afford G7 help -I created a simple method to achieve Grey Balance at press. I have included the "Wanted" numbers for the pre-press. Try it and let me know your results!! Call with any questions- Dan 412.889.7643

Go to System Brunner - he has examples of picture classification and process variation. The PC Reference shows a 2-4-6% color shift to Grey. (standard deviation is +/- 2%). That's why GCR is applied to decrease deviation of near neutral items. Questions? Dan 412.889.7643

Check out this reference piece, showing grey balance.

I have many training articles from Brunner, contact me directly to send items. Here’s a couple-

A few of us believe that printing to grey balance at press is important. Many can’t afford G7 or a consultant for help. Nearly all the RIP’s have a ‘measured’ file and a “WANTED” file. Has anybody ever supplied the values for this ‘Wanted’ file? We’ll I have, I measured many sheets and averaged...

See if this helps. . .

Here is a simple method to get great color reproduction, including uncoated! IF the printer will work with you . . .

Here's an easy method to get the best reproduction. . .

In Photoshop, some colors do change a little (depends on the color) - less change from dedicated software. In either case, there will be less variation in color during the press run than a traditional or UCR scan.

Print a GATF test form with ladder bars. The bars will show any distortion front to back / side to side. The spec. Is .06 density front to back. Call with any questions 412.889.7643

Here is a great example of GCR - open these images in Photoshop and look at each color side by side. . .

Email me and I’ll send you a copy of the best book I know for color reproduction. ‘Color Control in Lithography’ [email protected]