Prepressforums.com

JustAsking · #1 (**permalink**) 12-21-2005, 02:05 PM

Hi,

Here's the scenario using Preps:

- A color proof is printed from File A.

- Only TEXTUAL changes, and NO color changes are made to the File A to produce a File B.

- I re-rip File B and print another color proof.

Here's my question: Should the colors on the printed color proofs from File A and File B be 100% identical? Is it possible for the software to interpret the colors differently on the second rip of the file?

Thanks for the help in advance!

macdevin · #2 (**permalink**) 12-21-2005, 03:49 PM

Quote:

Originally Posted by JustAsking

Hi,

Here's the scenario using Preps:

- A color proof is printed from File A.

- Only TEXTUAL changes, and NO color changes are made to the File A to produce a File B.

- I re-rip File B and print another color proof.

Here's my question: Should the colors on the printed color proofs from File A and File B be 100% identical? Is it possible for the software to interpret the colors differently on the second rip of the file?

Thanks for the help in advance!

What type of proof!

JustAsking · #3 (**permalink**) 12-21-2005, 08:31 PM

Hi,

It's a printed color proof on an Epson printer. Does that answer the question?

macdevin · #4 (**permalink**) 12-21-2005, 08:40 PM

Quote:

Originally Posted by JustAsking

Hi,

It's a printed color proof on an Epson printer. Does that answer the question?

What epson printer and what Ink?

What is the time frame between Proof A and Proof B?
How long are you waiting before Proof B is dry?
How often do you calibrate your proofer?

Do you use ICC?

Devin

JustAsking · #5 (**permalink**) 12-21-2005, 08:51 PM

Hi Devin,

Thanks for your assistance. Here's the circumstances... I'm not actually using Preps myself. So I'm not sure what type of printer, etc.

I contracted a company to print a 48 page magazine. We provided them with a set of files initially. We received color proofs and were satisfied with the color quality.

We needed to make textual changes to the content of the pages. We requested not to have another set of color proofs printed, since we expected the colors to match up with what was printed originally. Again, we did NOT change any of the colors.

So... we gave them the okay to create the plates, and print the job. We received the finished product and notice it wasn't a 100% color match. There appeared to be a "shadow" effect.

The company claims that during the file ripping process, the colors can be interpreted differently. That is the basis of my original question

Is it possible? Again, I stress that the colors on the source files were never touched, only the textual content.

I very much appreciate your assistance in this matter.

T

DCurry · #6 (**permalink**) 12-22-2005, 05:06 AM

First of all, you should understand that your final piece will rarely, if ever, match the proof 100%. That's just the nature of printing.

However, your printer should have created your proof from the same files that image the plate - i.e. the actual ripped file. It is possible for a proofer's rip to interpret differently than the platesetter's rip. I would question why your proof was not created from ripped files.

jimking · #7 (**permalink**) 12-22-2005, 05:13 AM

Yes it's possible. Why? Because their color profiles from the color proofer do not match their press. Another words they have a poor calibration match. You have a right to tell the printer to match the proofs you signed off on.

SlaveToTheMan · #8 (**permalink**) 12-22-2005, 08:10 AM

Or, ideally press check at least part of the job to see how far from the proofs the final job might vary.

I mean, it's possible somebody in the Prep dept. did something differently from File A to File B when they sent it through the RIP, but you'll never know and it's not something they'd admit anyway.

Have you used this shop before, and do their proofs typically come pretty close to press sheets?

JustAsking · #9 (**permalink**) 12-22-2005, 08:47 AM

Thanks for all your responses.

The shop basically contends that because we provided them with a new set of files - the Preps program could/would have interpreted the files differently.

We were always under the assumption that if we left the colors alone, they would come out the same.

jimking · #10 (**permalink**) 12-22-2005, 09:00 AM

Did you just give them a Quark or Indy file with text changes? If so they would relink to the same graphics and the color should be the same. If you changed nothing but text in your page building program, it should be the same. If that's all you did they are just blowing smoke up someone's you know what. Are the colors way off, or just a bit? It sounds like what they are saying is 2 identical files will print differently. It sounds like a calibration issue and they do not have a clue how to adjust it.