Technical data

17.3.3 LN03 Image Printer
The DCPS Version 1.1 software does not support the LN03 Image Printer
(LN03Q). If you rely on this type of printer, it is recommended that you use the
DECprint Printing Services (CPS) Version 4.1 product to drive the printers.
An alternative to the LN03 Image Printer is the PrintServer image printing
technology. DCPS Version 1.1, when used with PrintServer Software Version 5.0
or later, takes advantage of any image-printing enhancements in your PrintServer
printer.
Image printing requires the DCPS-Plus license.
17.3.4 The State of a Printer Is Not Known Until a Job Prints
Beginning with DCPS V1.1, the functions that are performed when a queue is
started have become consistent. regardless of the interconnect. Specifically, when
a queue is started there is no attempt to make a connection to the printer. This
is to minimize the possibility that a queue will not start. This is particularly
important because there should be no errors or delays when queues are started
while a system is booting. This change primarily affects printers directly
connected to a system (TTAn or TXAn device). Previous versions of DCPS
attempted a connection to a directly connected printer when the queue was
started and could detect if the printer was powered on. Now, the state of a
printer and the interconnect are not known until a job is printed.
17.3.5 New Behavior for Serial Interconnect
When communications problems arise on the serial interconnect, the symbiont
will keep listening for up to 4 minutes before disconnecting from the printer.
Therefore, under some conditions, the serial device is not released immediately
after a STOP/QUEUE/RESET command is issued.
DCPS Version 1.1 Information 17–5