Become a G7 Master Printer: Technology in the Service of Creativity
What is G7 and what does it mean to you?
IIDEAlliance's G7 is a revolutionary new methodology for calibrating proof-to-press and press-to-press across any printing method.
Developed by our industry's leading color experts, the G7 methodology includes revolutionary techniques for dramatically improving print quality and consistency.
As G7 'Experts', we can provide step-by-step training within your company to calibrate proofing and printing systems using the latest G7 methodology.
G7 methods have been adopted worldwide: files and proofs created anywhere in the world using the G7 methods, can be matched in any pressroom.
For your business, this means improved color fidelity, press sheets that match the proof resulting in quicker make-readies, faster time-to-market, and lower manufacturing costs.
Take the first simple steps toward better printing: contact us at Cathay America: firstname.lastname@example.org
G7 on a Post-it Note
A guide to getting repeatable color matches on press, everyday
The G7 methodology has been critisized as being 'too complicated'.
It is not.
Here is a very nice summary of the process that was orignially published by Glenn Andrews of Schawk in Los Angeles. (with a couple of small changes of mine).
1. Use good paper and good ink.
2. Have the press in good running condition. 3. Include color bars with solids, overprints, a 50%C 40%M 40%Y neutral and a 50% or 53% midtone K patch. 4. Run to industry-standard solid ink densities. 5. Mid-tone density must be 0.54 plus the density of the paper. 6. 50%C 40%M 40%Y neutral must be exactly the same color and value as the mid-tone K.
A press sheet run to these specificationswill match a good proof.
Monday, November 17, 2008
In a continuing to think about how ink-sets around the world seem to be more similar that different, I tripped across another interesting set of numbers while cleaning out some old files. I fed these into my color comparison software to see what the differences would read.
Following is a comparison of Japan Color Standard vs. the recommended ISO L*a*b* values:
c 55 -37 -50
m 48 74 -3
y 89 -5 93
c 52 -36 -49
m 47 75 -3
y 87 -5 88
R 47 68 48
G 50 -68 25
B 24 27 -46
R 47 69 46
G 47 -68 23
B 21 22 -47
Comparing the two standards, here are the delta E values I got:
B 3.58 (btw...Japan Color Standard for black is 16.5 vs. ISO of 16.0)
All these readings are well within the published tolerances: ISO <5.0 and Japan Color <6.0
I've always been told that inks from Japan are 'different' from the inks we use in the States.
Is this comparison of the published standards a 'mythbuster' ?
GRACoL Expert Consultants are industry trainers and consultants who have completed an IDEAlliance certification program and are identified to be an elite group of professionals who are expert in the new GRACoL press calibration process.
What is a G7 Master?
The IDEAlliance G7 Master Program is a qualification program that identifies those creatives, premedia and printing companies who have been trained to proof or print to G7 Neutral Print Density Curves and can meet print buyer requirements to produce proofs or printed output conforming to the metrics that reliably render brand images across print locations and different printing types.. The qualification mark means that the printer uses the modern technology based on colorimetry, and employ G7 process controls. G7 Masters bear the IDEAlliance seal of approval. Attaining G7 Master status is a competitive goal for those providing creative, premedia and printing services, worldwide.
How Can G7 Experts Help My Company to Become a G7 Master?
To become a G7 Master your shop must be qualified by an IDEAlliance G7 Expert Consultant. These are color management professionals who have been trained in hands-on sessions and are certified by IDEAlliance to teach G7 techniques. G7 Expert Consultants are uniquely qualified to train printers, creatives and prepress houses in the G7 Method and are authorized to act as the qualification agents for IDEAlliance G7 Masters. Each G7 Expert consultant has their own consulting practice and determines their own pricing and engagement methodology.