PostScript Printer Description
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PostScript Printer Description (PPD) files are created by vendors to describe the entire set of features and capabilities available for their PostScript printers. A PPD also contains the PostScript code (commands) used to invoke features for the print job. As such, PPDs function as drivers for all PostScript printers, by providing a unified interface for the printer's capabilities and features. For example, a generic PPD file for all models of HP Color LaserJet contains: *% ================================= *% Basic Device Capabilities *% ================================= *LanguageLevel: "2" *ColorDevice: True *DefaultColorSpace: CMYK *TTRasterizer: Type42 *FileSystem: False *Throughput: "10" which specifies that the printer understands PostScript Level 2, is a color device, and so forth. The PPD can describe allowable paper sizes, memory configurations, the minimum font set for the printer, and even specify a tree-based user interface for printer-specific configuration. A PPD is also often called PostScript Page Description instead of Printer Description because PostScript has the concept of Page Devices where the PostScript page description configuration is read from or saved as a PPD file.
PostScript Printer Description (PPD) files are created by vendors to describe the entire set of features and capabilities available for their PostScript printers. A PPD also contains the PostScript code (commands) used to invoke features for the print job. As such, PPDs function as drivers for all PostScript printers, by providing a unified interface for the printer's capabilities and features. For example, a generic PPD file for all models of HP Color LaserJet contains: % ================================= % Basic Device Capabilities % ================================= LanguageLevel: "2" ColorDevice: True DefaultColorSpace: CMYK TTRasterizer: Type42 FileSystem: False Throughput: "10" which specifies that the printer understands PostScript Level 2, is a color device, and so forth. The PPD can describe allowable paper sizes, memory configurations, the minimum font set for the printer, and even specify a tree-based user interface for printer-specific configuration. A PPD is also often called PostScript Page Description instead of Printer Description because PostScript has the concept of Page Devices where the PostScript page description configuration is read from or saved as a PPD file. ==References==
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