Prepressforums.com - CMYK pdf black is changing to 4 color black through preps

RICKSELF · #1 (**permalink**) 11-17-2005, 04:27 PM

HI there
I can prolly figure that this has been covered, so sorry...

Some PDF files that have the type originally as 100K are ripping as 4 color black. We use a Fuji rip that converts the files to 1-bit tiff and move them to an Apogee for plating.

If I layout the pdf's in InDesign, the files sep correctly.

Aggrevating when you preflight the files and all is good but the plates come out different.

Any help or comments?

Thanks,
Rick

jimking · #2 (**permalink**) 11-18-2005, 04:14 AM

Hey rick! Have you tried sending the pdfs without placing them in Indy first? For example. If the pdf is made correctly, with bleed, no crop marks, and you click on your bleed tool and see that your bleed is correct, you could bypass placing them in Indy and go strait to preps. Then view your ripped file to see if it's not Indy causing this multi color text thing. Or is it when you don't go through Indy it seperates incorrectly? Have you tried resaving and distilling the pdfs on your end and with your settings?

RICKSELF · #3 (**permalink**) 11-18-2005, 06:56 AM

Hey JIm...happy Friday (right). Overnight I ran a file of Illy created pdf's (The pdf checked out OK with 100k) through Preps. The Preps file failed in the rip after 45 minutes or so. I took the Preps .m99 file, pdf'd it, and dropped the Illy pdf->Preps->pdf file back into the rip (as a pdf) and it went through. But the black turned into 4 color.

It's a lot of jumping through hoops that ended up ripping but somewhere it got f#$@ed up.

RICKSELF · #4 (**permalink**) 11-18-2005, 07:09 AM

I do need to say that Indy CS2 is a royal pain ion the arse with Adobe's new color management crapola. I haven't quite figured out why I should let Indy decide my color management for me over using my rip's print driver. I'm exporting anything I get in Indy CS4 back to CS3.

jimking · #5 (**permalink**) 11-18-2005, 07:12 AM

You should be able to click that feature off in Indy.

gbp04_05 · #6 (**permalink**) 11-21-2005, 05:53 AM

we're having this problem similar to this also, and found that if the client saved the file with an icc profile embedded, black type would convert to 4c. we've tried to send a distiller setting to them, but haven't recieved any new files from them to make sure that it works.

RICKSELF · #7 (**permalink**) 11-21-2005, 06:59 AM

I was reading on the Creo knowledgebase that you have to add a line or two to the print driver so that it would separate pdf's.

That ICC profile thing sounds darn familiar.

mattbeals · #8 (**permalink**) 11-21-2005, 07:20 AM

Preflight the PDF using PitStop and check to see if there are any icc profiles attached. Also, consider running an actionlist to convert 100k to device gray. Somewhere there are profiles involved.

RICKSELF · #9 (**permalink**) 11-21-2005, 07:34 AM

Quote:

Originally Posted by mattbeals

Preflight the PDF using PitStop and check to see if there are any icc profiles attached. Also, consider running an actionlist to convert 100k to device gray. Somewhere there are profiles involved.

Hey Matt
Are you saying that a pdf without icc profiles should rip fine through preps?

mattbeals · #10 (**permalink**) 11-21-2005, 07:37 AM

Yes. But Preps should be passing along the profile without processing it.