Canon BJC-610 User Manual Page 14

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Page Printers
Page printers, such as laser printers, process and print information one page at a time. The information
sent from the computer to the printer is sometimes in simple ASCII code, or more often, in a page
description language. This information is a set of instructions that the printer must interpret to determine
when the printer should position each dot. Some common page description languages include PostScript,
CaPSL, and HP PCL.
Line Printer and Processing
With line printers almost all of the processing burden falls on the computer. The printer needs to do very
little additional processing of the information it receives from the computer--it simply executes the
instructions it receives. This means a line printer needs very little processing power and memory.
Because most of the processing takes place on the computer, the speed of the computer's processor (386,
486, Pentium) and the amount of random access memory (RAM) on your computer have a significant
influence on printing speed.
The faster the processor, and the more RAM you have, the faster you can print on your BJC-610 Color
Bubble Jet Printer.
Page printers and Processing
With page printers, the computer and the printer share the processing load. The computer translates
information form the application into the appropriate page description language and sends this to the
printer. The printer processes this code into specific printing instructions on where to put each dot on the
page. This means that the printer itself must have a certain amount of processing power and memory to
handle the instructions it receives from the computer.
Because processing takes place on both the computer and the printer, the speed of laser printing depends
on the processor's speed and RAM available on both the computer and the printer.
Introduction 8
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