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Underbase, Etc.
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Topic: Underbase, Etc. (Read 1513 times)
GaryG
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Hero Member
Posts: 750
Underbase, Etc.
«
on:
February 15, 2016, 04:15:21 PM »
We have been using a 3pt choke on underbases in Photoshop 300dpi files for years.
Now want to do Illustrator choke/spread with .80 choke on UB.
How does one keep from having to choke UB, print film - Unchoke, print Top color film?
Is there a way to have "both" UB and Top color saved to go back to? And not in different files?
Thanks Much,
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jvanick
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Gonzo Member
Posts: 2477
Re: Underbase, Etc.
«
Reply #1 on:
February 15, 2016, 04:33:05 PM »
Our method:
(we use a custom template for our i-image that already has a 'underbase grey' spot color)
- Place art on the i-Image template, size to final size and place where desired.
- Add a new Layer underneath your art or use Layer 3 in the i-Image template.
- Select all. Copy.
- Lock the Art Layer.
- Place art on the new layer using Command+F (crtl+F for PC) or the Edit/Place in Front function.
- Hide the Art Layer.
- Delete all black from the new underbase layer (or any colors you don’t want to underbase.)
- Change all colors needing underbase to the Underbase Grey swatch in the color picker.
- Select All.
- Stroke in Black to 0.7 pt.
- Expand all (stroke and fill).
- Use the Pathfinder to merge everything.
- Select the black stroke using the magic wand tool and delete it.
- Lock the Underbase layer, show and unlock the art layer.
- Select All.
- Window/Attributes, click the overprint fill until it is checked (not empty or a dash),
- Zoom in, you should be able to see the underbase layer mixed with the art colors, creating a haze.
- Save the screen file.
- Create the .ps file from the print menu
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Ryan
Sr. Member
Posts: 447
Re: Underbase, Etc.
«
Reply #2 on:
February 15, 2016, 04:41:22 PM »
We have always made under base and placed behind art then set artwork to
Overprint fill
Sent from my QTAQZ3 using Tapatalk
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3Deep
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Ludicrous Speed Member
Posts: 5323
Re: Underbase, Etc.
«
Reply #3 on:
February 15, 2016, 05:09:25 PM »
When do what I'm suppose to do, I will make my under base a layer and if a top white is needed a layer also by itself in full color so I can go back and pick which color I need to solid underbase or halftone base. this way I can go back and change stuff around if needed a little pain in the butt, but let's face if your doing your art correct and not to have problems on press nothing is going to be that easy.
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Life is like Kool-Aid, gotta add sugar/hardwork to make it sweet!!
blue moon
Administrator
Ludicrous Speed Member
Posts: 6366
Re: Underbase, Etc.
«
Reply #4 on:
February 16, 2016, 05:26:59 PM »
choke or trap will be related to the opacity of your inks. If printing with process inks or systems designed to be less opaque, trap will be the way to go.
pierre
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Yes, we've won our share of awards, and yes, I've tested stuff and read the scientific papers, but ultimately take everything I say with more than just a grain of salt! So if you are looking for trouble, just do as I say or even better, do something I said years ago!
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