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Printing on Colored Stock...

oldschool

Active member
Does anyone have a generic disclaimer for printing on colored stock? We have always advised our customers it is best to have a drawdown done for printing on colored stock, but low and behold there is not enough time. Plenty of time to reprint it since they don't like the shift in color.
I put something simple together about color the changing but it sounded too vague to my boss.
Any help would be appreciated.
Thanks!
 
We usually put down 2 hits of opaque white and dry trap the other colors on top. I agree with your statement "always have time to reprint"!!! Good Luck!
 
shouldn't there be a way to measure paper white and adjust the artwork colors to work based on a yellowish paper for example?
 
Here is one of my several attempts, this is the shortest...

"The color of the stock will significantly change the way a photo looks. Any 4 color image will appear different when printed on colored stock. PMS spot ink colors will also shift when printed on colored stock. This proof can not be used as a color contract proof."
 
If the file is created with InDesign. You can change the 'Paper' color to get a close match to the actual stock. This would allow your company and the Designer to see how the job will look on colored stock. NOTE: changing the color of 'Paper' will not change the way the colors print. Make sure to turn on 'Overprint Preview'

Even if your file is not created with InDesign. You could place a PDF into InDesign and adjust the 'Paper' color. Giving you the same result.
 
We have placed images in Illustrator and used the multiply transparency over colors. I am not so much worried about proofing process, as the "CYA" tag line.
If a customer is dumb enough to not realize the color WILL change, they are dumb enough to complain PMS 301 on a gold stock does not match their book.
 
shouldn't there be a way to measure paper white and adjust the artwork colors to work based on a yellowish paper for example?


There is indeed. This can be done through a profile editor, but may not be ideal. The Gracol Committee will soon be releasing a spreadsheet that allows for the user to modify characterization data based on measured white point of a substrate to yield data that estimates the "appearance" on the new substrate. This uses tristimulus correction as defined in ISO 13655 Annex A for correcting measurements based on two backing materials. This is not yet available for download, but should be before too long.
 

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