Xerox 721P87491 manual Multiple jobs in one input file

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POSTSCRIPT

•Illegal characters adjacent to legal characters. If there is no white space character (as defined in the PostScript Language Reference Manual, second edition) between the illegal character or characters and legal PostScript characters, then that combination can be redefined to be the legal PostScript substring only, as shown in these examples:

(showpage\004) cvn {showpage} def (sp\004) cvn {sp} def

Note: It is not desirable to redefine a legal substring ABC as some other legal substring XYZ in the illegal token initialization file. For instance, although showpage frequently is redefined by PostScript code to be sp for brevity, it may seem to make sense to redefine sp <control D> as showpage. However, if the client application creating the PostScript defines sp to mean show rather than showpage, then to have sp <control D> initialized to mean showpage is an error.

Also, due to case sensitivity, some patterns may have to appear with the same case variety as in the PostScript jobs to be processed.

Because there may be an infinite number of character combinations, the system administrator is encouraged to redefine only known or suspect problem tokens.

Multiple jobs in one input file

Note that the above control-D handling does not perform true PostScript job encapsulation. Therefore, the following PostScript job situations may cause problems. All of these problems are due to having multiple PostScript jobs in one input file. If problems occur, break the concatenated masters into separate input files.

•Because control-Ds are not interpreted as end-of-job (EOJ), PostScript virtual memory (VM) is not restored before the next job. This means that the next job environment is not “clean,” which may or may not cause problems. PostScript VM may also run out since VM is not restored by control-D. Note that all Xerox PostScript products do restore VM at the end of their input file, so single PostScript jobs per input file are always handled correctly.

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Some of the PostScript jobs execute exitserver, which stays in effect until EOJ. Because the control-Ds are not interpreted as EOJ, subsequent non-exitserver job definitions become permanent, which could consume all of the PostScript VM or cause other PostScript problems.

A job executes code that flushes the input data up to EOJ. Because the control-D is not interpreted as EOJ, it does not stop the flushing. Therefore, the rest of the PostScript jobs in the input file are ignored.

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XEROX DOCUPRINT NPS GUIDE TO USING PAGE DESCRIPTION LANGUAGES

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Contents Version 7.1 August 2000 721P87491 Page Laser safety Operation safetyOzone information Conductor may result in risk of electrical shock. grounding Table of contents PostScript Vipp IndexViii Contents About this guideConventions Introduction Related publications Related informationPostScript publications HP PCL 5 publications Vipp publicationPCL Maintaining image qualityOFF PCL 5 media support PCL 5 font supportPCL 5 fonts installed with NPS software PCL command support PJL commandsPCL Copy command PCL Copy command example Duplex PCL Copy command examplePCL Duplex commands PCL Duplex commands DocuPrint NPS Collated HP LaserJet 4siPCL Job Separation command PCL Paper Source command tray assignment PCL media selectionPrecedence in selecting media PCL Output Bin command PCL Offset Registration commandsPCL 5c support PCL 5 coding recommendationsPCL 5c coding recommendations PCL 5c functions not applicable to DocuPrint NPSDriver recommendations for PCL 5c Limitations for custom PCL 5c driversCoordinate system default matrix Implementation-dependent operationsFloating-point arithmetic and math operators Fonts Adobe Type1 PostScript fontsFont Typeface Loading fonts User-defined fontsUsing Adobe Type 1 fonts Type 1 fontsUsing a Type 1 font in a document Producing Type 1 fonts for use with DocuPrintPostScript with embedded PJL commands PostScript language extensionsSystem Dict User Dict Server DictStatus Dict IdleTime DictionaryDfltkIdleArry needflush Nonstandard definitions Examples of nonstandard definitions Printer resolution and resolution enhancementAppearance consistency Statusdict UserdictDpi image Printed on a 300 dpi printer Printer imaging characteristics Font consistency Proprietary PostScript extensionsControl-Z and superfluous errors Control-D as binary data and end-of-jobSolution to control-Z and control-D problems Multiple jobs in one input file DocuPrint NPS implementation of PostScript Level Simulated mixed plexPrinter Controller operations Scan conversion detailsStroke Fill ShapesZero-width lines strokes Curved shapesImages Image quality Rendering of color and gray values transfer function PostScript printer description PPD files Implementation limitsFile operators and standard devices Implementation limitsQuantity Limit Description SetCacheDevice Path limitsPostScript VM limits Device orientation and setscreen operatorPostScript storage object size limits Obsolete operators-banddevice, framedevice, renderbandsArc to Bezier conversion-pathforall Creating the necessary PostScript Ccitt Group 3 Print performance related to image printingScan order and rotation Purpose Image orientation mismatch aImage orientation mismatch B 10.Image pixel sequence example Considerations SummaryScan resolution and scaling 11.Scaling and resolution example12.PostScript with embedded image normal scan order MaxX exch def /minY exch def /minX exch def 14.Actual PostScript print Page Vipp Functionality Operating environmentVipp line mode extension XGFNub Page Symbols CcittIndex PCL PPD Index

721P87491 specifications

The Xerox 721P87491 is a remarkable printing device that showcases advanced technology tailored for professional environments, ensuring high-quality output and efficiency. Aimed at meeting the demands of busy offices, this model is recognized for its reliability and innovative features.

At the core of the Xerox 721P87491's appeal is its robust printing capabilities. It offers an impressive resolution, enabling the production of crisp and clear documents, whether in black and white or color. This high-resolution output is particularly essential for businesses that require detailed graphics, intricate charts, or professional-grade presentations.

One of the standout features of the Xerox 721P87491 is its impressive speed. It is designed to handle high-volume printing, significantly enhancing productivity in fast-paced work environments. With a rapid print speed per minute, users can expect swift processing of print jobs, ensuring that document delivery times are minimized.

The device also boasts advanced connectivity options. It supports both wired and wireless connections, allowing for seamless integration into a variety of office networks. This flexibility facilitates printing from multiple devices, including desktop computers, laptops, and mobile devices, enhancing overall workflow and collaboration within teams.

Additionally, the Xerox 721P87491 incorporates user-friendly interface options. With an intuitive touchscreen display, navigating the printer's functions becomes simpler. Users can easily access common features, adjust settings, and manage print jobs efficiently.

Another notable characteristic is its advanced security features. Given today's emphasis on data protection, the Xerox 721P87491 is equipped with robust security protocols to safeguard sensitive documents. It includes features like secure print, which holds documents until the authorized user enters a PIN, ensuring confidentiality in high-stakes environments.

Moreover, the Xerox 721P87491 demonstrates an emphasis on environmental sustainability. It is designed to be energy efficient, reducing power consumption during both idle and active states. The printer also supports duplex printing, which helps decrease paper use, contributing to a more sustainable office practice.

In summary, the Xerox 721P87491 is a versatile printing solution that merges efficiency, quality, and advanced technology. With high-speed printing, intuitive controls, robust security features, and a commitment to sustainability, it stands out as an excellent choice for businesses aiming to boost productivity while maintaining high standards. Its capabilities make it a worthy investment for any modern office environment.
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