At 8:52 AM -0700 9/3/05, David wrote:
Thanks for your reply.
Right now he’s making 4/C PDFs of all his files in an attempt to overcome the lack of RIP problem. However I’m pretty sure that if you send an Epson printer a 4/C file (not through a RIP that is) that the native driver first converts it to RGB and spits back out its “own flavor” of CMYK which negates any original numbers.
Do you know if there are any PostScript RIPs available for the 1800 which would allow it to be profiled as a CMYK device or is my friend just out of luck in terms of using his 1800 for accurate graphic arts proofing purposes?
I don’t think he needs either a RIP or the ability to control he printer with >4 channels.
It is a common misunderstanding that you need either a RIP for multi-channel control or both.
A good profile used within a good application (Adobe publishing app like Photoshop) should do the job just fine.
It’s true that CMYK sent to an RGB-controlled printer undergoes a conversion to RGB but you need some sort of conversion to take place no matter what (the printer is not going to accept press-CMYK well). Getting a good profile and having Photoshop apply the conversion from his document space to the print space is by far the most important part.
o Steve Upton CHROMiX www.chromix.com
o (hueman) 866.CHROMiX
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