Xerox 721P87491 manual PostScript with embedded image normal scan order

Page 59

POSTSCRIPT

Figure 2-12.PostScript with embedded image: normal scan order

%!PS - Adobe - 3.0

%G4.example.ps

%Example using embedded CCITT group 4 (G4) data.

%Example using data in "normal" scan order, which has the fast scan

%direction left-to-right, and the slow scan direction top-to-bottom.

%Page size is roughly 8.5x11 (slightly clipped).

%Data has resolution of 300 spots per inch.

%Fast scan direction for the image is left-to-right across the page.

%Slow scan direction for the image is top-to-bottom down the page.

%This scan direction requires 90 degree internal rotation for DocuPrint.

%printers, although the PostScript code has no explicit rotation given.

/lines 3296 def

%

lines in

the image

/bpl 2528 def

%

bits per

line

/res 300.0 def

 

% spots per

inch of image resolution

/useMask true def

 

% true =>

use imagemask, false => use image

save

 

 

 

 

bpl res div 72 mul lines res div 72 mul scale bpl lines useMask {false} {1} ifelse

[bpl 0 0 lines neg 0 lines] currentfile

<<

/Uncompressed false /K -1

/EndOfLine false /EncodedByteAlign false /Columns bpl

/Rows lines /EndOfBlock false /BlackIs1 true

>>

/CCITTFaxDecode filter useMask {imagemask} {image} ifelse

!!!! binary G4 data goes here !!!!

%%%%%%%% end of G4 data

restore showpage

%%End of Example

The following example illustrates the requirements for embedding and printing an image in an enhanced scan. If a large number of images are to be printed, it is best to avoid the internal rotation. To do this, you must include the data in the order in which it is required, which means that the fast scan direction for the image is bottom-to- top, and the slow scan direction is left-to-right.

Assuming that the data was reordered in this way, the following example shows a fragment of PostScript that produces the same output as the previous fragment.

XEROX DOCUPRINT NPS GUIDE TO USING PAGE DESCRIPTION LANGUAGES

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Contents Version 7.1 August 2000 721P87491 Page Ozone information Laser safetyOperation safety Conductor may result in risk of electrical shock. grounding Table of contents PostScript Index VippViii Conventions ContentsAbout this guide Introduction PostScript publications Related publicationsRelated information Vipp publication HP PCL 5 publicationsMaintaining image quality PCLOFF PCL 5 font support PCL 5 media supportPCL 5 fonts installed with NPS software PCL Copy command PCL command supportPJL commands 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 5cFloating-point arithmetic and math operators Coordinate system default matrixImplementation-dependent operations Font Typeface FontsAdobe Type1 PostScript fonts 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 documentSystem Dict PostScript with embedded PJL commandsPostScript language extensions Server Dict User DictDfltkIdleArry needflush Status DictIdleTime Dictionary 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 LevelStroke Printer Controller operationsScan conversion details Shapes FillImages Zero-width lines strokesCurved shapes Image quality Rendering of color and gray values transfer function Implementation limits PostScript printer description PPD filesQuantity Limit Description File operators and standard devicesImplementation limits Device orientation and setscreen operator Path limitsPostScript VM limits SetCacheDeviceArc to Bezier conversion-pathforall PostScript storage object size limitsObsolete operators-banddevice, framedevice, renderbands Scan order and rotation Creating the necessary PostScript Ccitt Group 3Print performance related to image printing 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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