HP LaserJet 4250/4350 Series - Software Technical Reference

Select Disabled and print your document again if you encounter problems.
NOTE In some cases, disabling Postscript Passthrough may cause unexpected program
behavior.
Printer Hard Disk
When this option is enabled, the Stored Job option and the Mopier Mode are enabled in the print
driver. Use the Stored Job option to store print jobs and then print them later from the control panel.
The multiple-original print (mopy) function is an HP-designed feature that produces multiple, collated
copies from a single print job.
Job Storage
If your HP LaserJet 4250/4350 printer is equipped with a hard-disk drive, the Job Storage option
should be enabled and all job storage options are available. If your HP LaserJet 4250/4350 printer is
not equipped with a hard disk drive but has a minimum of 80 MB of memory (for the 4250) or 96 MB
of memory (for the 4350), limited job-storage options are available. When job storage is enabled, the
product can store print jobs so that you can gain access to those print jobs later at the control panel.
Mopier Mode
The multiple-original print (mopy) function is an HP-designed feature that produces multiple, collated
copies from a single print job. Multiple-original printing (mopying) increases performance and
reduces network traffic by transmitting the job to the printer once, and then storing it in the printer
hard disk. The remainder of the copies are printed at the fastest speed. All documents that are
printed in mopier mode can be created, controlled, managed, and finished from the computer, which
eliminates the extra step of using a photocopier.
The HP LaserJet 4250/4350 printer supports the transmit-once mopying feature when the product
has an installed hard disk or a minimum total memory of 48 MB, and the Mopier Mode: setting on
the Device Settings tab is Enabled.
When you use the HP PCL 6, PCL 5e, or PS emulation unidriver, mopying is performed in one of two
ways: either through the software or through the product hardware. When the mopier is enabled,
mopying takes place through the product hardware by default. One copy of a multiple-page print job
is transmitted once through the network to the product, together with a printer job language (PJL)
command that directs the product to make the specified number of copies.
When you disable the mopier, you are not necessarily disabling mopying, which the driver can still
perform through the software rather than through the product hardware (the mopying path that is
disabled when you change the Mopy Mode setting to Disabled). However, a multiple-copy print job
that you send with the mopier disabled loses the advantage of transmitting the print job once,
because the print job is sent through the network the same number of times as the number of copies
selected.
Mopier mode and collation
Mopying and collating print jobs are independent but closely related functions. The print driver
performs mopying, which is the ability to send original print jobs to the product. Collating is controlled
by either the print driver or the document software program. The mopying mode is selected by
default in the driver, and can be disabled by changing the Mopier Mode setting on the Device
Settings tab to Disabled.
226 4 HP PCL 6, HP PCL 5e, and HP PS 3 emulation unidrivers for Windows
HP unidrivers