HP 2420 - Manual (Page 235)

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 be
performed 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.
You can control collation through the print driver by selecting or clearing the Collated check box on
the Advanced tab. You can clear the check box, which is available only when the Copy Count
option is set to more than 1 copy, to allow the software program to control collation.
To receive uncollated multiple copies of a print job, you must clear the Collated check box and make
sure that the software program collation feature is not selected.
The following table shows the relation between mopier mode settings and collation settings in the
software program and the driver. The first three columns show the settings; the last column,
"Expected result,” shows how a three-page print job would appear.
Table 4-4 Driver Mopier mode and collation settings
Mopier mode Application collation Driver collation Expected result
Disabled Not selected Not selected 3 copies uncollated
Disabled Not selected Selected 3 copies uncollated
Disabled Selected Not selected 3 copies collated
Disabled Selected Selected 3 copies collated
Enabled Not selected Not selected 3 copies uncollated
Enabled Not selected Selected 3 copies uncollated
Enabled Selected Not selected 3 copies collated
Enabled Selected Selected 3 copies collated
Postscript Passthrough
Postscript Passthrough is only available in the PS Emulation Unidriver. It is enabled by default,
and must be enabled for most print jobs. Postscript Passthrough provides additional capabilities for
some software programs when printing to a Postscript driver.
Options such as Watermarks, N-up, and booklet printing might not print correctly from some
programs with Postscript Passthrough enabled, because such programs send Postscript information
HP PCL 6, HP PCL 5e, and PS emulation unidriver features 219
HP unidrivers