Xerox 6180N Using LCDS Print Description Language - Page 362
Considerations and cautions for using DJDEs
UPC - 095205425307
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Using Dynamic Job Descriptor Entries (DJDEs) 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 5-8 Using LCDS Print Description Language