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Brother HL4570CDW

Apr 19th 2012 at 10:05 PM


The laser technology was first developed by Xerox Corporation in 1971. The first machines were extremely expensive, complex and cumbersome. The first commercial laser printer table was made available by Canon in 1982, the LBP-10.

Also important was the development of standards for communication with the computer. Some printer models for success have given rise to de facto standards, the so-called emulation. A printer could accept commands for the standard model and was emulated in this manner compatible with existing software. Some examples are emulations: IBM Proprinter, Epson ESC P / 2, HP Laserjet.
Brother HL4570CDW


Equally important was the design of languages ​​for the description of the page, independent of the printer model: the most common are Postscript from Adobe Systems (1976) and the Printer Control Language (PCL) of Hewlett Packard. In practical applications in the specific language code pages to print, without having to worry about which output device is used, the code is then interpreted by the microprocessor of the printer, the software drivers, or programs to display / conversion.

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