Xerox DocuPrint Network Printer Series Guide Manual

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Xerox DocuPrint Network Printer Series Guide Manual Manual pdf 49 page image

POSTSCRIPTXEROX DOCUPRINT NPS GUIDE TO USING PAGE DESCRIPTION LANGUAGES 2-23PostScript printer description (PPD) filesPostScript printer description files (PPD files) are readable text filesthat provide information about the special features of your printingdevice to the application program running on your host system. PPDfiles include information about page sizes, finishing features, andfonts, among other items.PPD files are stored on a client workstation or PC where they can beparsed by applications. Some application programs supply PPD filesfor a variety of printers, rather than have you contact printermanufacturers to obtain one.The DocuPrint PPD files provided with DocuPrint software conformto version 4.2 of Adobe PPD specifications. If your applicationsoftware supports version 4.2 PPD files, the DocuPrint PPD filesshould be used when generating print documents from yourapplication.If your application does not support version 4.2 of the PPDspecification, the Generic PPD file can be used. In the cases whereusing the LaserWriter PPD file results in PostScript code thatcontains operations not supported on DocuPrint, use the “NULL”PPD file that is available with some applications.Implementation limitsFeatures that are known to be device dependent (see the AdobePostScript Language Reference Manual, 2nd edition, for a list) maydiffer from other implementations. These include performance, VMusage, certain kinds of shading and line thickness, some kinds ofhalftoning, resolution dependencies, and certain implementationlimits.The following table lists the implementation limits that are not definedin the PostScript standard, but are inherently different on PostScriptdevices.