Xerox 4112-4127 Enterprise Printing System-192 User Manual
Page 362
Using Dynamic Job Descriptor Entries (DJDEs)
5-8
Using LCDS Print Description Language
Considerations and cautions for using DJDEs
Remember the following points and cautions when coding and
applying DJDEs.
Page transition
issue
If you use the JDE DJDE to reassign the channel that caused the
page transition (generally channel 1), when the DJDE printer
carriage control (PCC) byte is processed the first page may be
incorrectly positioned after the page transition occurs. Page
oriented DJDEs, like the JDE DJDE, are implemented when the
system detects the switch from one physical page to the next.
The normal page transition is caused by a skip from the bottom
of a page to the top of the next, generally channel 1.
For example, if channel 1 had been previously assigned at line 1,
then a new JDE assigned channel 1 to line 10, the system would
not automatically reposition to line 10.
Solution
Here are some ways to avoid this problem.
•
You may add an ASSIGN DJDE to the DJDE packet to
change the applicable channel, such as channel 1, to the
new line number. Because the ASSIGN DJDE is a record
oriented DJDE, it is implemented on the next line and thus
affects the next channel skip.
•
You may insert a record after the DJDE packet to cause the
page transition and then allow a second skip to channel 1 to
position to the correct line. This technique causes a blank
page to be printed if the new channel 1 is less than the old,
but is totally transparent if the new channel 1 assignment is
greater (further down the page) than the old.
Duplex DJDE page
printing issues
When certain DJDEs (listed below) are invoked between an odd
numbered page (front side) and an even numbered page (back
side), the following printing sequence occurs.
The odd numbered page is printed as usual, but with a blank
back side. What would have been printed on the back side (the
even numbered page) is printed on the front of the next sheet.
This occurs for the following DJDEs:
•
COPIES
•
OTEXT
•
RTEXT