#Raster image processor portable
#Raster image processor software

In AM screening, dot size varies depending on object density-tonal values dots are placed in a fixed grid. Two screening methods or types are Amplitude Modulation (AM) screening and stochastic or Frequency Modulation (FM) screening. Screening: In order to print, a continuous-tone bitmap is converted into a halftone (pattern of dots).Simple languages were designed to work on minimal hardware so tend to 'directly drive' the renderer. Note that in practical RIPs, interpretation and rendering are frequently done together. Rendering: A process through which the private internal representation is turned into a continuous tone bitmap.Once a page has been output the page state is discarded to ready it for the next page. Most RIPs process pages serially so the current machine state is only for the current page i.e. Interpretation: This is the stage where the supported PDLs (Page description languages) are translated into a private internal representation of each page.So, for example Linotype RIPs supported CORA (RIP30). Every PostScript printer contains a RIP in its firmware.Įarlier RIPs retained backward compatibility with photosetters so they supported the older languages.

#Raster image processor software

Ghostscript and GhostPCL are examples of software RIPs. RS-232) 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 recorder.Ī 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. Originally RIPs were a rack of electronic hardware which received the page description via some interface (e.g. In the latter case, the RIP applies either smoothing or interpolation algorithms to the input bitmap to generate the output bitmap.

#Raster image processor portable

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.

Such a bitmap is used by a later stage of the printing system to produce the printed output. A raster image processor (RIP) is a component used in a printing system which produces a raster image also known as a bitmap.