Prepressforums.com - Nexus Edit

prepress_slave · #1 (**permalink**) 12-05-2006, 06:40 AM

Hello,
I am currently trapping in Nexus Edit, using the vector based 4 stage auto trap method. No matter what native program I am using, or file format I import to nexus manager I can't get the auto trapper to make a spreadback on KO text that falls over a 4/c rich black CT. I have to manually make my spreadbacks. It works fine when KO text is over rich black LW areas, but never over a CT. Anyone have any experience with this? Is this just something I'll have to deal with?
:?

MMC · #2 (**permalink**) 12-06-2006, 03:08 PM

I always use commercial trap setting with "keepaway rich black" setting checked.

prepress_slave · #3 (**permalink**) 12-06-2006, 03:41 PM

W'ell 4 stage also has a keep away rich black check box, which I have checked on. You are saying that you are getting the spreadbacks to work over your 4/c CT's as well as your LW 4/c Blacks? If so, any specific file format you are using? (PDF, EPS, .PS, etc....) Once the font is imported to Nexus edit, they are converted to outlines. So although it is text I am refering too, technically, its now artwork.

detric_1 · #4 (**permalink**) 12-06-2006, 05:11 PM

I'm not 100% sure...but I don't think that the trapper will read the values of the CT. I think it just see's it as ct and it's in or out. I don't think that it will recognize a rich black.

Kinda like it does in raster...It's just got the percent value you set in the trapper module and it works from that. Not the actual ink values.

But I could be wrong.

Dave

MMC · #5 (**permalink**) 12-07-2006, 08:03 AM

the trapper doesn't read value of CT, but the "Black Margin" is what tells it a "guess-ta-mate" of the image value, if you set Black Margin to 0, the CT will always trap to tints, the higher the Black Margin is set, the darker the image will be thought of by the trapper. I usually have Black Margin set to 85 and adjust traps as needed.