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Chapter 7 Using Page Level Recovery On LineJet Printers
Using Page Level Recovery On LineJet Printers
The native mode spooler on MPE/iX 5.5 (and later) supports Page Level
Recovery (PLR). PLR provides the ability to restart printing at any page of a
document due to device problems or a suspended spooler. (Refer to the
HP
e3000 MPE/iX Native Mode Spooler Reference Manual
for more information.)
Clarification on how it is handled for LineJet printers is described below.
There are three types of PLR that can occur, and all three use silent run
techniques. That is, the data is sent to the printer and the printer interprets it
but does not start actual printing until the printer reaches a target starting
page specified by the spooler (e.g., the page following the last one printed).
Restarting at a user-specified page number in a command
Processing of a spool file can be suspended and then resumed. It can be
suspended by using the
spooler command with the suspend parameter
or by using the
suspendspool command. It can be resumed with the
spooler command with the resume parameter or by using the
resumespool command. When the spool file resumes printing, it can start
exactly where it left off or at another specified page.
For LineJet printers, the optional
offset parameter in the spooler
command can only be used to specify an absolute offset (i.e., absence of a +
or – sign). When the
offset parameter is not used, printing resumes where
it stopped. When the
offset parameter is used, a silent run (PLR) will occur
up until the specified starting place.
For example, to suspend spooling and to position 7 pages from the beginning
of the spool file, enter the following command:
spooler 6;suspend;offset=7
In this case, the absence of a + or – sign indicates an absolute offset from the
beginning of the spool file.
Note One feature of the Printer Job Language (PJL) spooler is the ability to
keep track of pages printed as a part of Page Level Recovery. On a paper
jam or paper out condition, the printer control panel displays the page
number counted.
For Page Level Recovery to be operational, the printer must have a
minimum of 4 MB Flash and DRAM memory; CMX Controller, Version 5.5
or later; and be running Function Code, Version 356351, Rev. 2.07P or
later. All of these requirements are satisfied with the LineJet and LP Series
“C” and above models. However, LP Series “A” and “B” models require
upgrading to gain Page Level Recovery functionality.
Note The CIPER protocol devices (e.g., C256x using the HP-IB interface) allow
you to specify the
offset parameter with the + or – sign. With spooled
network printers such as LineJet printers, unpredictable results will occur if
the
offset parameter is used with the + or – sign.
