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photoshop seperations

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jerboy
Posted: Mon Feb 09, 2009 10:30 am Reply with quote
Joined: 02 Jun 2006 Posts: 334 Location: the piedmont
I'm about to start working on some posters for a buddy of mine, he's providing illustrations in black, scanned at a high resolution, 1200 dpi, you can always make it small but can't make it bigger

so, does anyone have any suggestions on printing films for these?

i'm using inkjet films on a canon I9900, with my own graphics i usually run everything out of illustrator and just run my color separations from layers seeing as how they're all vector graphics.

how could i run these scans from photoshop with the black being VERY black. i was thinking of just boosting the contrast so that the black comes out very black.

any suggestions would be greatly appreciated.
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modskin
Posted: Mon Feb 09, 2009 7:40 pm Reply with quote
Joined: 29 Mar 2003 Posts: 2696 Location: Atlanta, GA
If you're trying to print BLLAAAACK BLACK BLACK films on an inkjet, you're more than likely going to need some sort of print controller (RIP or Fiery unit) between your computer and your printer. It will allow you to control the amount of ink output. That's how I've seen it done in the past. Just set it for the max output.

I don't have a lot of experience with it, as I print using a medium format laserjet to vellum, but I know people who use the inkjet method.
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newrepublicsteve
Posted: Tue Feb 10, 2009 1:47 am Reply with quote
Joined: 13 Nov 2004 Posts: 674 Location: Birmingham
take each black layer and make it into a seperate file...
convert each file into a 50% threshold bitmap and save as a bitmap

you can than "place" each file into a new illustrator document
and output the fils as well

you can assign the .bmp files specific spot colors in AI.
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Jigzaw Sequence
Posted: Tue Feb 10, 2009 3:01 am Reply with quote
ORDER OF THE SKULL ORDER OF THE SKULL
Joined: 02 Dec 2008 Posts: 280 Location: southern california
you can get an agfa image setter for next to nothing right now.
you need a good rip to run it as well as some adobe skills.
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dartheyeball
Posted: Fri Feb 13, 2009 11:39 pm Reply with quote
Joined: 06 Jan 2005 Posts: 16
i use this printer
epson 1400


and R-FILM™ 13"x100' Roll WaterProof Positive Film
prints solid black
you can also get your layer and do a color overlay with black to get the darkest black on there
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jerboy
Posted: Mon Feb 16, 2009 10:19 am Reply with quote
Joined: 02 Jun 2006 Posts: 334 Location: the piedmont
i ended up doubling up the films to get a dense black, still not BLACK BLACK but dark enough to expose the screen.

using qtx and 3 - 20 watt unfiltered black lights i had about an hour exposure time, seems like a lot for time but i think its because of the black in the film.

worked out pretty well though.
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darkmannn
Posted: Thu Apr 23, 2009 12:38 pm Reply with quote
Joined: 23 Apr 2009 Posts: 1
You could also make each into a "rich black" 100K, 30C, 30M, 30Y. This may have given you the density you needed.
My 2¢

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