![]() ![]() Jobs suggested to Adobe that postscript would work very well as a printer language, so Adobe made a few changes and the LaserWriter became the first printer to use postscript.īecause the LaserWriter was powered by postscript, the LaserWriter could print higher quality documents than all of its competition, making the LaserWriter the most successful printer of its day by a long shot and solidifying postscript’s reputation as necessary for high-quality graphics. But postscript’s real breakthrough came thanks to a suggestion made by someone else you may have heard of: Steve Jobs, co-founder of Apple Computer.Īround the time Adobe began to sell Postscript for describing computer graphics, Apple was about to produce its first laser printer, the LaserWriter. To develop and sell postscript, its two lead programmers founded a company, Adobe Systems. To help computers quickly define complex operations, it also included a computer programming language which could be used to move or repeat objects without having to redefine them. ![]() Postscript is a file format created to make it easy for computers to create vector images. When your monitor or printer reads the vector image, it can turn the line definition into a specific series of pixels or dots, maintaining near-perfect quality at any resolution. To draw a line, a vector image doesn’t define which pixels to fill it simply specifies the start point of the line and the end point of the line. Instead of describing where each pixel or dot goes, vector images use constructs which look a lot like your high school geometry. This works well if your monitor or printer has the same number of pixels or dots as the image.īut when the bitmap has 72 pixels per inch (a common computer monitor resolution prior to high definition) how should your printer print it at 300 or 600 dots per inch (common printer resolutions)? Some image file formats reflect this by creating a bitmap, a map which describes what color to use for each bit (pixel or dot) in the image. Printers print using dots to create images the same basic way the pixels in your computer monitor create images. What makes postscript so special that these printers all support it natively? Postscript And Vector Graphics With these printers, you can simply send a postscript file to them over USB-no drivers required-and they’ll print it perfectly. Postscript is a file format supported by almost all high-end printers and many business-class laser printers. ![]()
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