why does a postscript print driver need a RIP?

Answer 1

A RIP chip is used in laser printers to communicate raster images to a laser.

A raster image processor (RIP) is a component used in a printing system which produces a bitmap. The bitmap is then sent to a printing device for output. The input may be a page description in a high-level page description language such as PostScript, Portable Document Format, XPS or another bitmap of higher or lower resolution than the output device. In the latter case, the RIP applies either smoothing or interpolation algorithms to the input bitmap to generate the output bitmap.

Raster image processing is the process and the means of turning vector digital information such as a PostScript file into a high-resolution raster image.

Originally RIPs were a rack of electronic hardware which received the page description via some interface (eg RS232) and generated a "hardware bitmap output" which was used to enable or disable each pixel on a real-time output device such as an optical film scanner.

A RIP can be implemented either as a software component of an operating system or as a firmware program executed on a microprocessor inside a printer, though for high-end typesetting, standalone hardware RIPs are sometimes used. Ghostscript and GhostPCL are examples of software RIPs. Every PostScript printer contains a RIP in its firmware.

Answer 2

if you're doing all of your own printing and may set the parameters of your printer to settle for aRGB, bypass ahead. in case your commercial printer can use aRGB enter, bypass ahead. in case you could't set administration this stuff, you receives better consequences with sRGB. aRGB will look "flat" in case you attempt to print it in an sRBG color area.