Setting Page Order; Product Features That Affect Print Quality; Proprietary Postscript Extensions - Xerox DocuPrint 4850 NPS Troubleshooting Manual

Setting page order

Product features that affect print quality

Proprietary PostScript extensions

XEROX DOCUPRINT 4850/4890 NPS TROUBLESHOOTING GUIDE
DocuPrint delivers documents with the pages face down in the order
presented in the Page Description Language. The order can be
changed by setting the PageOrder attribute.
If the Staple attribute is set, DocuPrint must deliver the document
face up. In order to deliver the stapled document in the correct order,
it must image the document in reverse page order. In order to image
a document in reverse page order, the entire document must be
processed before printing starts.
For the best print speed, ensure that each PostScript program has
the pages in the correct order for the finishing requirement for the
document:
•
No finishing is required: PDL should be in ascending page
order. PageOrder attribute should be set to ascend.
•
Stapling is required: PDL should be in descending page order.
•
Duplex printing is required: there should be an even number of
pages. Page order should be set to descend.
Note: If you are using a third-party finishing device connected
to DocuPrint by a bypass transport, the page delivery order is
determined by the requirements of the third-party device (face
up or face down). To maximize performance, place the pages in
the PostScript master in the order in which they are required by
the finishing device.
You can improve the appearance of your documents by being aware
of potential problems created through the use of proprietary
PostScript extensions and device-dependent operators.
PostScript masters that use proprietary printer features may cause
appearance inconsistencies between different PostScript printers.
Some PostScript printers contain proprietary PostScript extensions.
For example, some versions of the Apple Macintosh PostScript driver
download encrypted proprietary image "smoothing" operators to
Apple LaserWriters. The downloaded PostScript code uses the
product operator to determine if it is being used on a LaserWriter. If
not, the proprietary code is bypassed by doing a flushfile. This
allows the PostScript master to print on non–LaserWriter products.
As a result, PostScript masters generated on a Macintosh with Apple
proprietary features may produce output that varies between
LaserWriter and non–LaserWriter PostScript printers.
ADJUSTING PRINT QUALITY AND SPEED
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