Re: Colorsync-users Digest, Vol 5, Issue 207
Re: Colorsync-users Digest, Vol 5, Issue 207
- Subject: Re: Colorsync-users Digest, Vol 5, Issue 207
- From: Louis Dery <email@hidden>
- Date: Fri, 13 Jun 2008 15:52:27 -0400
Hi Brian,
On Jun 13, 2008, at 3:22 PM, Brian Lawler wrote:
Greetings, all,
Over the years I have heard and read much about PCR/GCR, and to a
degree it is all true.
What is not true is that you will save significant amounts of money
on ink when printing with GCR.
It is possible to save ink not only with GCR but also with Total ink
coverage reduction, all together.
The ink saved is negligible. But, the time saved is very
significant, and more valuable than ink.
It depends on the printing process used and and the ink coverage on
the page.
GCR benefits web printers (both offset and gravure) and screen
printers. The reason is that gray balance is easier to attain and
maintain.
Agree.
When you have a machine that is eating up a kilometer of paper
every minute, you don't want to be messing around with color balance.
Completely agree.
Screen printers benefit because GCR makes gray balance easier to
reach without going back and making new screens when the color
doesn't balance.
Making color corrections on a moving web press is a very expensive
activity, and should be avoided.
Not only on web press but on most printing processes.
Trying to make Photoshop correction on press is more expensive than
doing Photoshop correction with Photoshop!
Now... sheet-fed presses. Do they need GCR? Probably not.
It does not hurt to make separations with GCR, but the appearance
of the color in heavy GCR images is not as good as UCR, and on
sheet-fed this can make a difference. I recommend light GCR, if
any, when printing on sheet-fed presses.
It all depends on the type of job AND the software used to make the
GCR seps.
All software are not equal when it comes to make GCR seps. Some fail
at low Total ink coverage. It all depends on the approach they take
for their GCR calculation method.
The advantages that sheet-fed presses have are:
1. they run slower than web presses
2. they can be stopped when you encounter a problem
UCR separations print nicely on sheet-fed presses, and are easy
enough to balance if all of the other quality control steps are in
place.
Agree. But again, also for UCR, some software have problems in the
way they make separations. So you cannot say UCR is "allways" better
compared to GCR if you don’t compare different softwares methods used
for the color seps.
Anyone who tells you that you can go to the bank with the savings
on ink just doesn't know much about printing.
Sorry Brian, but we have many clients who do saves money because of
ink saving and it is been validated.
It is not only about the amount of ink but also about all other
factors like time, paper, etc.
I invite you to download our free utility called PerfX Image Ink™
which allows to compare ink savings solutions.
http://www.tglc.com/PerfX/image_ink_saving.html
Best regards,
Louis Dery
Color Management Expert
TGLC inc.
www.tglc.com
email@hidden
418-877-9114
Best wishes,
Brian P. Lawler
Brian P. Lawler
Graphic Arts and Photographic Consultant
1329 Peach Street
San Luis Obispo, California 93401 USA
Tel: 805 544-8814
Fax: 805 544-8445
E-mail: email@hidden
Web: www.thelawlers.com
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