Difference between Separations & In Rip Seps?

[ecm28]

If I am going to print a file to distiller and want the pdf to be serpated. What is the difference between seperations and In-Rip separations?

 

[MarcusStringer]

Seperations when run through Distiller will produce a seperated PDF.
c, m, y, k.
In RIP seperations produce a combined PDF to be seperated later "In-RIP"

From InDesign help file.

Printing and saving separations

Depending on the prepress software available, a service provider may be able to perform such prepress activities as trapping, imposition, separating, and OPI replacement at the output device's RIP. Therefore, your service provider may prefer to receive a composite PostScript file of the document optimized for in-RIP separations, rather than a preseparated PostScript file. (See Creating a PostScript or EPS file.)

Performing in-RIP separations requires a PostScript 3 output device, or a PostScript Level 2 device whose RIP supports in-RIP separations. If the document contains duotones from Photoshop 5.0 or later, a PostScript 3 device is required to generate in-RIP separations. You also need to select a PPD file that supports this device.

Saving the file saves the separation settings, the PPD information, and any color conversions you have specified in the Print dialog box.

Note: To use Adobe In-RIP Trapping, you must be working with in-RIP rather than host-based separations. Otherwise, the trapping feature won't have access to all of the colors at once, and trapping won't occur.

Marcus

http://www.midlandtypesetters.com.au