Xerox 4090 IPS Gray shading-settransfer and transfer function, Settransfer, or Setcolortransfer

Page 55

Optimizing print quality

Gray shading—settransfer and transfer function

The PostScript operators settransfer and setcolortransfer are used to change the procedure for mapping perceived color values in the output of the print device into specified color values in the PostScript master. PostScript devices use an internal transfer array or procedure that takes into account the printing characteristics of their marking engines in order to produce levels of color.

Transfer functions are called by the setcmykcolor, setbsbcolor, setrgbcolor, and setgray operator before processing of the desired color level that is specified in the master. The transfer function takes a value from the stack and leaves another value on the stack for each color component (red, green, blue, and gray).

The PostScript language provides a scheme for overwriting the internal transfer function of a printing device by providing the settransfer and setcolortransfer operators. However, some Xerox PostScript devices do not allow you to overwrite their internal transfer function.

Typically, a master tries to replace the internal transfer function with a null transfer function such as:

{} settransfer, or

{} {} {} {} setcolortransfer

If either of the above procedures is successful, the transfer functions return the same color levels that are passed to them without modifying or mapping the level. On printers which do not allow the overwriting of the transfer function, the settransfer operator does not affect the mapping of gray values between the output of the print device and specified levels of color.

NOTE: Settransfer actually sets the transfer functions for all four color components (red, green, blue, and gray) to the same value. The setcolortransfer operator sets the transfer functions individually.

Troubleshooting Guide

5-3

Page 54 Page 56
Image 55
Page 54 Page 56
Contents 721P90231 Version 8.0 October Xerox DocuPrint 4050/4090 NPS/IPSPage Table of contents Optimizing print quality Resolving printer problems Resolving system problemsLaser safety SafetyOzone information U. S. only Operation safety U. SOperation safety Europe Electrical supply Operator accessible areasVentilation Before cleaning your product MaintenanceCE mark Europe only Radio and telecommunications equipment directive Europe only For further information Safety Xii Troubleshooting Guide Introduction ContentsAbout this guide Conventions Related publications Introduction Information to have on hand when calling for service Calling for serviceEnabling and disabling the modem for remote service Troubleshooting Xerox Client Software installation Error message Description Xerox Client Software installation error messagesPserver problems Problem Probable Cause Resolution Troubleshooting a Novell implementationPASSWORDS=ON at the server Troubleshooting a Novell implementationRprinter problems Problem Probable Cause Resolution Page Clearing paper misfeeds and jams Clearing a feeder tray faultPage Page Frequent misfeeds Page Areas along the simplex paper path Clearing paper jamsMessage and graphic displays on printer console Message labels inside the printer Job recovery Checking job integrity following a paper jamPrinter jam clearance areas Remove and discard any paper you find in the areas indicated Clearing paper jams from areas 2 and 2A Page Page Clearing paper jams from area Page Follow these steps to clear jams from area Clearing paper misfeeds and jams Clearing paper jams from area Page Clearing paper jams from areas 6 and 6A Clearing paper jams from area Page Page Clearing paper jams from area Page Clearing stitcher/stacker paper jams areas a and B Adjusting dual stacker tray scuffer arms Adjusting scuffer arm weights Optimizing print quality Product features that affect PostScript print qualityProprietary PostScript extensions Gray shading-setscreen and setcolorscreen Device-dependent operatorsSettransfer, or Setcolortransfer Gray shading-settransfer and transfer functionInvisible strokes-0 setlinewidth Smooth curves-setflatScan conversion-fill, eofill, and stroke Symptom Probable cause Action Resolving printer problemsResolving printer problems Resolving system problems Enter Print Sample Document to see if Enter Start Queueing or PrintingEnter Show Scheduling Policy to Set Scheduling Policy toDocument Attributes to specify desired Enter Show Document AttributesEnter Show Document Attributes to Enter Start Printing or Start Ipds Enter List Virtual Printer or Show IpdsEnter Start Virtual Printer vpname Enter Start QueueingINDEX-1 IndexINDEX-2 INDEX-3 INDEX-4
Related manuals
Manual 128 pages 55.36 Kb

4090 IPS specifications

The Xerox 4090 IPS and the Xerox 4050 IPS are two of the most advanced digital printing solutions offered by Xerox, catering to the needs of high-volume printing environments. Both models are designed to enhance productivity and deliver exceptional print quality, making them ideal for commercial printing houses, universities, and corporate environments.

The Xerox 4090 IPS, for instance, boasts a robust design capable of handling large print jobs with ease. Its standout feature is its high-speed printing capability, reaching up to 90 pages per minute. This speed is complemented by the advanced imaging technology that guarantees sharp text and vibrant images. The 4090 IPS utilizes a laser printing mechanism, which contributes to its ability to produce fine detail and consistency across various media.

On the other hand, the Xerox 4050 IPS offers slightly lower speed at 50 pages per minute but compensates with additional versatility. It supports a diverse range of media types, including heavy cardstock, envelopes, and labels, making it a perfect choice for businesses requiring varied print outputs. Both models feature a powerful processor and an extensive memory capacity, ensuring seamless print processing even for complex documents loaded with graphics and images.

Both printers come equipped with Xerox’s Intelligent Print System (IPS) technologies, which optimize print workflows for efficiency and manageability. This system allows for easy integration into existing network environments and supports various file formats, enhancing compatibility across different platforms. In addition, the user-friendly interface and touchscreen control panel simplify navigation and job management.

Security features are also a priority in both models. They include secure print functionalities and options for user authentication, ensuring that sensitive information remains protected during the printing process.

In summary, the Xerox 4090 IPS and 4050 IPS deliver outstanding performance through their high-speed printing, exceptional print quality, and adaptability to various media types. Coupled with innovative technologies designed for efficiency and security, these printers are well-suited for organizations needing reliable and high-quality printing solutions. Overall, both the 4090 IPS and 4050 IPS represent a significant advancement in digital printing technology, setting a high standard in the industry.
Top Page Image Contents