IPP Mail Archive: RE: RE: IPP> MOD - comments on Carl's Set and Admin operations regist ration [some questions]

IPP Mail Archive: RE: RE: IPP> MOD - comments on Carl's Set and Admin operations regist ration [some questions]

RE: RE: IPP> MOD - comments on Carl's Set and Admin operations regist ration [some questions]

Anthony Porter (anthony.porter@computer.org)
Wed, 30 Jun 1999 17:54:36 +0200

But I guess that even if the Printer cannot communicate with the output
device, the IPP client would still like the Printer to try synchronize and
would not suspect that there was any reason to specify "false"

-----Original Message-----
From: owner-ipp@pwg.org [mailto:owner-ipp@pwg.org]On Behalf Of
kugler@us.ibm.com
Sent: 30 June 1999 17:34
To: ipp@pwg.org
Subject: Re: RE: IPP> MOD - comments on Carl's Set and Admin operations
regist ration [some questions]

Anthony Porter wrote:
original article:http://www.egroups.com/group/ipp/?start=5956
> Are there any advantages to setting synchronize=false? If the printer can
> synchronize it may as well always synchronize, since nothing much is lost
if
> the job is simply discarded afterwards.

[Note: This is beyond my range of expertise.] Apparently it's useful to
somebody in the case where the Printer cannot communicate with the output
device. In this case, the Printer cannot be shut down with synchronization.
However, the Printer can be shut down without synchronization, which allows
any previously hung operations to complete.

>
> I think that many printers are likely to implement synchronization by
> counting the number of sheets that have left the printer. In that case
they
> would prefer to always do a NPRO when shutting down, otherwise they would
be
> left with a number of unfinished sheets in the printer which complicates
the
> synchronization after a restart. Also, many printers, including web fed
> printers, have to do a NPRO otherwise they will spoil the sheets that are
> left in the machine.

Hmmm. In our case, on Shutdown, "non-process-run-out"='true' is only valid
with "synchronize"='true'.

> ...

-Carl