Epson C82362 User Manual download pdf (Page 12)

FastRIP

PRO for Macintosh ver. 9.0

Chapter 2

Introduction

Welcome to FastRIP

Pro 9.0

Congratulations on purchasing FastRIP

Pro, the affordable PostScript printing

solution for non-PostScript printers. PostScript is an industry-standard scripting

language that describes the text and graphic elements of a print job. When

FastRIP

processes a print job, these PostScript elements are used to generate

a raster image (a series of horizontal lines) that the printer is capable of

rendering. The printer will then print your image one raster line at a time.

FastRIP

performs the task of a Raster Image Processor (RIP), not only

handling PostScript interpretation, but also performing high-speed memory

management of the raster image and the spooling of multiple jobs to the printer.

FastRIP

utilizes Virtual Memory (VM) disk processing to do this. VM

processing means PostScript file size limitations have been nearly eliminated

while also supporting up to PostScript Level 3 images.

PostScript and Raster Images

The term “raster display”originates from the method by which television images

are created in a series of horizontal scan lines. Sixty times a second (60 Hz),

these scan lines are rendered from top to bottom on a cathode-ray tube (CRT).

This frequency is faster than the brain can process the information, thus allowing

a sequence of still pictures to create the illusion of movement. Televisions and

computer monitors are referred to as raster displays and the rectangular pattern

of horizontal lines refers to a raster.

A printer is also considered a raster display, since printing requires text and

graphics to be translated into a rectangular pattern of horizontal lines. The printer

will then lay ink upon the media for each raster line, rendering the final image.

The process of creating a raster from text and graphic elements is known as

rasterization.

Printers - PostScript versus Non-PostScript

A PostScript file is a computer file that contains page layout descriptions for a

print job. The term “PostScript Printer”originated in the late 1980's to describe

printers designed to receive PostScript files from networked computer terminals.

When computers were not nearly as powerful as today’s machines, a central

printer would be customized with expensive memory and an upgraded

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Epson C82362 User Manual Page 12