PostScript Printer Description
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.
Read more about PostScript Printer Description: CUPS, Windows, MIME Type
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