Xerox 721P87491 manual Path limits, PostScript VM limits, SetCacheDevice

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POSTSCRIPT

status and bytesavail return different results when output is compared among different implementations of PostScript, due to differences in the implementation of file I/O.

Path limits

The LaserWriter has a limit of 1500 path segments that can be defined in the current path. Any master that exceeds this limit generates a limitcheck error.

DocuPrint NPS uses a different scheme for representing paths in its internal memory than that used by the LaserWriter. Although the maximum number of path segments is larger than the LaserWriter’s (in other words, masters that print on the LaserWriter also print on DocuPrint NPS without limitcheck error), it is difficult to state the exact limit, due to the different algorithm for storing rendered shapes in DocuPrint NPS.

PostScript VM limits

DocuPrint simulates PostScript virtual memory (VM) limits (default=4 MBytes). When the PostScript VM limit is reached, it sends the PostScript error message “VMe=Error” to the “JOB AND ERROR MESSAGES” page. In rare cases when real VM runs out, the Printer Controller sequencer is automatically restarted and the job is held for either restart or cancellation by the operator.

SetCacheDevice

DocuPrint does not pad the bounding box of user-defined fonts. Emitters that depend on the PostScript interpreter for padding of the bounding box create PostScript masters that can result in blank pixels.

Device orientation and setscreen operator

Due to differences between the device coordinate systems in DocuPrint NPS and those in the LaserWriter or a typical desktop printer, the use of the setscreen operator produces different results between printers.

Figure 2-6.DocuPrint device coordinate

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 Index VippViii Contents About this guideConventions Introduction Related publications Related informationPostScript publications Vipp publication HP PCL 5 publicationsMaintaining image quality PCLOFF PCL 5 font support PCL 5 media supportPCL 5 fonts installed with NPS software PCL command support PJL commandsPCL Copy command Duplex PCL Copy command example PCL Copy command examplePCL Duplex commands DocuPrint NPS Collated HP LaserJet 4si PCL Duplex commandsPCL Job Separation command PCL media selection PCL Paper Source command tray assignmentPrecedence in selecting media PCL Offset Registration commands PCL Output Bin commandPCL 5 coding recommendations PCL 5c supportPCL 5c functions not applicable to DocuPrint NPS PCL 5c coding recommendationsLimitations for custom PCL 5c drivers Driver recommendations for PCL 5cCoordinate system default matrix Implementation-dependent operationsFloating-point arithmetic and math operators Fonts Adobe Type1 PostScript fontsFont Typeface User-defined fonts Loading fontsType 1 fonts Using Adobe Type 1 fontsProducing Type 1 fonts for use with DocuPrint Using a Type 1 font in a documentPostScript with embedded PJL commands PostScript language extensionsSystem Dict Server Dict User DictStatus Dict IdleTime DictionaryDfltkIdleArry needflush Nonstandard definitions Statusdict Userdict Printer resolution and resolution enhancementAppearance consistency Examples of nonstandard definitionsDpi image Printed on a 300 dpi printer Printer imaging characteristics Proprietary PostScript extensions Font consistencyControl-D as binary data and end-of-job Control-Z and superfluous errorsSolution to control-Z and control-D problems Multiple jobs in one input file Simulated mixed plex DocuPrint NPS implementation of PostScript LevelPrinter Controller operations Scan conversion detailsStroke Shapes FillZero-width lines strokes Curved shapesImages Image quality Rendering of color and gray values transfer function Implementation limits PostScript printer description PPD filesFile operators and standard devices Implementation limitsQuantity Limit Description Device orientation and setscreen operator Path limitsPostScript VM limits SetCacheDevicePostScript 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 Image orientation mismatch a PurposeImage orientation mismatch B 10.Image pixel sequence example Summary Considerations11.Scaling and resolution example Scan resolution and scaling12.PostScript with embedded image normal scan order MaxX exch def /minY exch def /minX exch def 14.Actual PostScript print Page Vipp Operating environment FunctionalityVipp line mode extension XGFNub Page Ccitt SymbolsIndex 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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