Epson drivers are calibrated and profiled for RGB input and perform much better when presented with RGB images. This is why you will hear that it is best to see these printers as RGB devices. How this is done varies from RIP to RIP and is not often well explained. You actually can’t drive these things without one.įor most modern Epson printers and the like, the RIPs driving them have to take this incoming four or three or one or six whatever channels and reconvert it for the six, seven or eight colors actually being applied to the paper, thus somewhat diluting any ink limiting or K generation intended by the user who originally created the CMYK file. Simply put, this means you would need a PostScript RIP if you need to pass on your CMYK definitions of ink limiting and K generation on to an image setter, plate setter or direct digital press. Expand this definition to PostScript RIP and you introduce the ability to handle four channels of bitmapped data to what a RIP does (as well as a host of other things, further complicated by the level of postscript compatibility the RIP was designed for: Level 2, Level 3, etc). So a RIPs basic job is to take vector graphics data and convert it to bitmapped graphics. Occasionally you get printed output that is a bunch of gobbledygook in which case the interpreter has lost its mind and is passing on the code directly to the printer. Strictly speaking, raster image processing means turning a bunch of equations and commands into pixels that can actually be printed.
#Raster image processor software software
For end users, confusion may lead to unnecessary expenditures for software and hardware. For vendors, confusion is useful as it allows them to sell more stuff. RIP stands for ‘raster image processor’ and I would really like to see the term confined to that definition otherwise it leads to endless confusion. It’s becoming a poor man’s Rampage or Scitex workstation. I am amazed at how fast Photoshop can complete this job.
Try saving a file as an EPS from whatever vector application you are using and open the EPS file (it’s Adobe legal) file in Photoshop at the size you want and presto, it’s been ripped. For many low production environments, Photoshop and a little ingenuity is all that is needed. Newer versions of Photoshop serve as a very effective RIP in a variety of applications. First of all, if a file is coming from Photoshop it does not need to be “ripped”, it is already a raster image file.
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