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The Level 2 Postscript added better support for color printing. Postscript has three versions Level 1, Level 2 and Level 3. PCL 6 has various revisions that support various features such as color handling, compression, units of measurement, font, and paper handling. Postscript printers include a built-in interpreter that executes Postscript instructions.
PPD VS PS FOR MAC DRIVERS
Postscript drivers deliver better quality output and are used for complex printing jobs.
PPD VS PS FOR MAC CODE
Postscript is capable of sending information as binary code or as plain text. PCL 6 Enhanced is designed as a stack-based, object-oriented protocol supporting only binary encoding. Font Synthesis was incorporated to provide scalable fonts, font management, and for the purpose of storing forms and fonts. PCL 6 Standard was designed to be an equivalent of PCL 5e or PCL 5c for providing backward compatibility. PCL 6 was an object-oriented page description language designed to print from graphics user interfaces like Windows also known as PCL XL. The PCL 6 was released in 1995 for HP LaserJet 4000 series printers adding three main features to the version PCL 6 Enhanced, PCL Standard, and Font Synthesis. The object-oriented graphics has an advantage over bit-mapped graphics since the object-oriented images take advantage of high-resolution output devices while bit-mapped images do not use these devices. The PCL 5 version supports a scalable font technology known as Intellifont. Postscript also supports scalable font technology which allows changing the font size. The Postscript fonts are generally named outline fonts because each character has an outline defined for itself. It considers them as a set of geometrical objects instead of bit maps. Postscript has a different way of treating images and fonts. Some of the important functions in PostScript include complex drawing and scaling which are not available in PCL drivers. Postscript includes many advanced functions when compared to PCL drivers. The PCL drivers send the information to the printer in the binary form.
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Postscript drivers often send the entire page description to the printers where it is used. PCL drivers are often used for rendering on the local workstation, and PCL printing is much faster than Postscript because of this reason. PCL is also a printer command language as a page description language developed by Hewlett Packard for their laser and ink-jet printers. Postscript is a page description language developed by Adobe systems generally used on a laser printer for printing documents.