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Generating the raster image data

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

Originally RIPs were a rack of electronic hardware which received the page description via some interface (e.g. 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.

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.

Earlier RIPs retained backward compatibility with photosetters so they supported the older languages. So, for example Linotype RIPs supported CORA (RIP30).

Stages of RIP[edit]

  1. Interpretation: This is the stage where the supported PDLs (Page description languages) are translated into a private internal representation of each page. Most RIPs process pages serially so the current machine state is only for the current page; i.e. one page at once. Once a page has been output the page state is discarded to ready it for the next page.
  2. Rendering: A process through which the private internal representation is turned into a continuous tone bitmap. Note that in practical RIPs, interpretation and rendering are frequently done together. Simple languages were designed to work on minimal hardware so tend to "directly drive" the renderer.
  3. Screening: In order to print, a continuous-tone bitmap is converted into a halftone (pattern of dots). Two screening methods or types are Amplitude Modulation (AM) screening and stochastic or Frequency Modulation (FM) screening. In AM screening, dot size varies depending on object density—tonal values; dots are placed in a fixed grid. In FM screening, dot size remains constant and dots are placed in random order to create darker or lighter areas of the image; dot placement is precisely controlled by sophisticated mathematical algorithms.

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

RIP Providers[edit]

See also[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Raster_image_processor — Please support Wikipedia.
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61 news items

WorldPressOnline (press release)
Fri, 25 Sep 2015 02:45:00 -0700

ColorGATE utilizes the latest Adobe PDF Print Engine 3.7 as Raster Image Processor engine (RIP engine) and further optimized it for high performance processing of multi-page documents in Productionserver. During this process a continuous data rate of ...
Printing Impressions (press release)
Wed, 29 Jul 2015 11:31:26 -0700

The optional EFI XF server or Harlequin raster image processor (RIP) provides advanced color and job management. The pro900DP digital envelope press features an embedded EFI Fiery System 8e Controller with SmartRIP technology for fast, automated ...

Advertising Specialty Institute (press release)

Advertising Specialty Institute (press release)
Tue, 26 May 2015 21:41:15 -0700

However, he recommends they upgrade their equipment, and buy an inkjet printer with Raster Image Processor (RIP) software, so they can create more complicated prints using halftones – a series of large and small dots that resemble shading from a ...

Advertising Specialty Institute (press release)

Advertising Specialty Institute (press release)
Thu, 09 Jul 2015 09:07:30 -0700

Raster Image Processor (RIP) Software: To keep your images from pixelating, you need a program that will rasterize them. Some manufacturers include RIP software in their product bundle, but there are third-party solutions available if that's not the case.
Marketwired (press release)
Thu, 12 Feb 2015 11:52:30 -0800

MOUNT LAUREL, NJ--(Marketwired - February 12, 2015) - OKI Data Americas announces availability of the new C931e and C941e, upgrading its Multimedia Production Platform family of production-quality A3 color devices. These new, full-color devices ...
MyPrintResource.com (press release)
Tue, 17 Feb 2015 15:40:26 -0800

C931e and C941e– These new, full-color devices deliver enhanced feature sets, speed, and superior output quality. Optional EFI XF server or Harlequin raster image processor (RIP) for advanced color and job management. The unique five color printing ...
Printing Impressions (press release)
Fri, 26 Sep 2014 12:48:40 -0700

The C711DW utilizes OKI label management software from HYBRID Software as a front-end solution, plus Proactive server and Harlequin™ raster image processor (RIP). It prints at up to 25 ft./min. in continuous feed mode, and handles a variety of media ...

Business 2 Community

Business 2 Community
Tue, 14 Oct 2014 18:50:30 -0700

Color management brings predictability to the studio, eliminates guesswork during retouch operations, increases the productivity and efficiency in the studio and is a key tool in the print ad production process. But for a studio or production house ...

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