Computers and Software > RIPs

List of issues & work aropunds with your RIP?

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Dottonedan:
As a separator, I experience different shops using all sorts of methods and RIPS to print films. Sometimes, the standard process or technique is unconventional to the defined process of that RIP manufacturer.  In addition, each device has it's own quarks. Can you please take a few moments to reflect on your own experiences with your RIP's and describe any work arounds to issues.

PRINTING ISSUES FROM THE WHITE SEP:
One common issue seems to be with the color white in separations. I have heard various anomoly's with printing a white separation. Some examples are:

1 Getting additional unwanted white %'s  in the background (outside) the print area.

2 Some of the image reads and prints but gets cut off.

3 Color seps print, but on the white sep, none of the white image (of the art) prints but the registration marks and color names do print.

It appears that some rips sort of wig out out when it reads WHITE in a color channel. The assumption is that it does not recognize white or gets confused when a color assignment of white is applied, possibly since we do not print white in standard cmyk printing and photoshop is not designed for printing white as an ink (so to speak).

Thoughts/experineces?  Please indicate what RIP you are using and if any (unconventional) processes to print films.

Frog:
When I was starting out with Computer Graphics Programs, it was in CorelDRAW 3 &4, and it wass pretty much stumbling around, self teaching.
Back then, I often substituted another color for white to make my life easier (after all, the screen doesn't know what color ink is going in)

At least since v8, there is a printable white. Does Photoshop have this? If not, or if it giver trouble, how about substituting another color in the seps as a workaround like I used to do?

squeezee:
A spot colour is a spot colour, I can't see PS getting confused by a white channel.  Try it as a different name but I doubt that it will make a difference, more likely a PBCAK error.

ebscreen:
The percentage fill around an actual fill is an error in the separations.
Too much info drawn for the underbase or hilite or whatever. I hate it when that happens.

Ghostscript here, but thinking of upgrading to something else just to smooth workflow.

Photoshop seps saved as PSD (if raster art originally) into
Illustrator
Reg marks/film info added
All seps converted to black, nested on film accordingly
Print to PS file using Adobe PDF driver
Open in ghostview, double check one last time
Print


Films from GS are awesome, way better than anything else I've ever seen.
Workflow is a bit clunky, a RIP would prevent me from saving a file and re-opening in GS.
I do like that there is one last preview before film is committed, as well as the fact
that the PS files used are copies of what was actually produced and can be re-opened and
edited if need be.

mk162:
That is what I like about our RIP.  Except it no longer works on 7, so I have to install it on the server and use a print queue that is a laser printer.  I have the same setup for my vinyl cutter as well. 

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