Duplex printing with HP DeskJet 6122

[Malcolm Kay]

On Sun, 1 Jun 2003 19:36, Sheldon Hearn wrote:
> Hi folks,
>
> We just got an HP DeskJet 6122 for printing Unix docs.  It comes with a
> duplexing unit, which works when driven by the supplied Windows driver.
>
> However, I'd really rather have this thing connected to my FreeBSD
> workstation.
>
> I've tried CUPS and LPRng, and neither of the two support this printer's
> duplexing feature out of the box.
>
> Does anyone have any suggestions?
>

Probably needs one or two PJL commands tacked on to the front of the print job
and one or two more at the end to cancel the duplex. Have a look for the PJL
commands supported by your printer -- try an HP web site -- and write a print 
filter that can add in the commands either by the selection of a duplex queue 
or by passing options to say LPRng with lpr -Z

Malcolm