Re: [hpoj-devel] Need advice on setup/configuration for HP OJ Pro 1170C

[David Paschal <paschal@xxxxxxxxx>]

James B. Hiller wrote:
> Also, I saw the news about the patch to hpijs-1.2.2, and did try that out,
> since it is stated to be relevant to HP Deskjet 8xx, which is what the
> OJ 1170C looks like, at least as far as using the black cartridge for
> black printing in color mode.  For the record:  initial results not as
> expected - black text comes out much lighter with the patch than without;
> comment forwarded to patch maintainer.
Hi, James.  I don't know all the details about hpijs, but I thought that
composite black (CMY instead of K) was only used in the high-resolution
"photo" modes, which aren't supported on the DeskJet 890 and OfficeJet
1170.  I'm told that the hpijs DJ8xx and DJ890 device classes are exactly
the same, except that DJ890 doesn't allow you to select the "photo" mode.
That would suggest to me that the "addition of true black" in this patch
wouldn't have any effect (or at least not the desired effect) for your
model, as you're seeing.

> My concern also comes from the fact that the reference docs in the
> hpoj/hpijs arena all say that the OJ 1170C works like a Deskjet 890,
> which apsfilter maps to the cdeskjet device in gs; but apsfilter maps
> the OJ 1170C to its Deskjet 810 driver script, which is handled by
> the gs ijs device - which is the device of choice for using hpoj, which
> I must use to get the 1170C to work with lpd.
See above.

> duplex options that might be coaxed out of the printer come to mind (no
> buttons for those, but maybe a way to make it happen).
This model doesn't have any automatic (hardware) duplex capability.

> b.  Is there any real difference between a DJ 810 and DJ 890, or am I making
> something out of nothing?
See above.

David