file:///C|/Documents%20and%20Settings/Miz%20B/My%20D...%20UGTA/Nuvera%209.0%20UGTA_FINAL/English/psg_20.htm8/13/2008 2:37:16 PM
Poor or Slow System Performance
If your machine performance becomes degraded, or it ceases to function correctly for any reason, executing a Restart will usually
restore correct functionality. If the problem continues, contact your Xerox representative.
Related Hints and Tips
There are several things that affect the performance of the system and RIP speed when processing print jobs. The following is a list of
common situations that negatively can impact throughput:
For restart procedures go to
For improving print speed and productivity go to
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The nature of printing is that the complexity of images is non-deterministic until those images are being processed so that
rated speed of the engine is not guaranteed during RIP. When printing multiple sets of a document, Nuvera retains all images
after RIP for all subsequent sets. Therefore, any performance penalty encountered will only be experienced during the first set.
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It is common to embed logos and watermarks in submitted print files. These are typically bitmap images that, when embedded
in a print stream (such as PostScript), can take a long time to process. Note also that resolution selections, such as 600 dpi
vs. 1200 dpi, can have a significant further impact on processing of these types of embedded images. Consider the design of
documents and impacts to printing speed in such cases. There are methods available, through PostScript for example, to
cache these embedded images, process them once, and retain them as a resource for application on each page without
having to render and scale them for each page. Refer to your PostScript reference manuals and FreeFlow Print Server
reference manuals for information about caching.
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Submission of multiple TIFF images simultaneously is a common application. There are several batch printing tools available
on the market. Most of them require the selection of a print driver for the target printer through which these images files are
submitted. In these cases, the TIFF files are converted to a Printer Description Language (PDL), such as PostScript, by the
batch tool using the printer driver. Then they are submitted to the printer, which in turn RIPs that PDL and re-renders the TIFF
bitmap images back into bitmaps. This is an inefficient process that can significantly slow the machine down. Nuvera includes
a native TIFF interpreter that can process TIFF files sent to it directly. Some of the batch tools on the market support a native
TIFF submission capability. It may be referred to as a bypass mode or something similar. If such a capability is available, the
Nuvera's performance can be significantly improved by taking advantage of that capability.
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The PDF Optimization feature should not be used when printing PDFs that were saved in FreeFlow Print Server using the RIP
Save or Scan to File selections. These types of documents will take much longer to RIP when PDF Optimization is enabled.
Before enabling PDF Optimization, it is recommended that the user run performance tests using representative customer jobs.
Restarting the System
Improving Print Speed Performance
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NOTE
:The default print resolution is 1200 dpi. 600 dpi printing may be adequate for your job. Try setting your
resolution to 600 dpi to improve the RIP performance of complex 1200 dpi jobs. 1200 dpi results in four times the
internal image data of a comparable 600 dpi image that has to be transferred through the system. When the print
resolution is changed from 1200 to 600 dpi, the stroke thickening value may also need to be changed from 1 to 0 to
avoid excessive line thickening.
NOTE
: When printing to a DFA-compliant 3rd party finisher, do not select Bypass Transport as the output location.
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