Harald,
> [...] or if you make it a requirement that every
> pixel must go onto the page before an acknowledgement can be sent back
> to the requester, even though the backend LPR-only printer has internal
> storage and no way to show its internal queue.
>> (My HP Laserjet does that all the time....considerable time passes
> between "queue empty" and the time I can fetch the printout....)
Ah yes, we in the PWG know about this situation all too well.
The problems of reconciling related--yet independent--job queues is
a prime focus of the PWG's Job Monitoring MIB Project (aka, "JMP").
Be careful, though, that you don't try to start painting a picture
in which IPP is supposed to solve *all* of the myriad of problems in
the general printing environment.
It's a huge mess out there, and we had best bite off only what we can
successfully chew in the next 6-9 months, IMHO.
...jay
----------------------------------------------------------------------
-- JK Martin | Email: jkm at underscore.com --
-- Underscore, Inc. | Voice: (603) 889-7000 --
-- 41C Sagamore Park Road | Fax: (603) 889-2699 --
-- Hudson, NH 03015-4915 | Web: http://www.underscore.com --
----------------------------------------------------------------------