Nowadays, not all printers use Postscript, but all of them have to have some kind of translation layer to turn text and image data into printed material. Modern Printed Pages and Newer Printing Processes
Entire photographic mages can also be re-written as postscript this way-the filetype is called Encapsulated Post Script, or EPS.
#ADOBE POSTSCRIPT DRIVER COLOR CODE#
To get an idea of what this Postscript code actually looks like, take a look at this screencap from Mikkel’s page below of the image this code generated. Most Postscript isn’t written by hand like this, but rather by programs. This large middle section of gobbledygook is actually hexadecimal code that defines an image. Grestore %restore the settings from before the translat Times-Roman findfont 16 scalefont setfontġ05 210 translate %This cordinates places the images on Here’s a second example, from Mikkel Meinike Nielsen’s page on Postscript: Fonts referenced in this program exist in vector form and are called up from separate files-and were a big part of Adobe’s contribution to the digital graphics industry. We start to see pretty quickly what kind of instructions Postscript is giving the printer, and just how simple the directions are. Times-Roman findfont 50 scalefont setfont Here’s a sample “Hello World” program from. Directions are written out in a human-readable way, and communicated to the printer, which creates the high quality art from the instructions. Postscript, as the name sort of suggests, is actually a Turing-complete programming language. Leaving Xerox PARC, the pair developed a flagship product in Postscript, which has remained, even to this day, a graphics industry standard. Interpress was not necessarily the first PDL, and it wasn’t Warnock and Geschke’s last collaboration. Interpress solved this engineering problem-it was a system of translating images and complicated shapes into data the printer can use to turn out high quality printed artwork. The pair had worked together at Xerox and had created page description language (or PDL) called Interpress. There was one simple engineering problem that had to be solved-how do you create instructions for a printer that can easily do both at once? The Best of Both Worlds: Postscript is the Print WhispererĮnter Adobe engineers and co-founders John Warnock and Charles Geschke. And because this printing process was fundamentally different from any of the comparatively crude methods listed above, Xerography was a logical way to print clean type and graphics at the same time. Toner adheres to the static electricity, and is pressed onto the paper, creating artwork without the use of dot matrix style pixels. Here’s a graphic and a rough descriptions of how Xerography works: light hits electrically charged areas of the printing drum, the electrons react and those negatively charged areas lose that charge.
#ADOBE POSTSCRIPT DRIVER COLOR PC#
Although Xerography had been invented in the thirties and made commercially available as copy machines in the late fifties and sixties, it wasn’t used in PC printing until Xerox PARC engineer Gary Starkweather designed the first laser printer. Xerography, AKA photocopying, was the development printers were looking for. What were all the clever geeks supposed to do? Xerox PARC, and Development Of The First Laser Printer The challenge was this: no existing model of PC to print technology could create vector-based, clean typography AND graphics at the same time.
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