At least at one point, there was also the notion of QUALDOCs as a
"driverless" paradigm. No need to reopen the debate... just embellishing
the stated history.
I don't see the black/white - either/or that Tom portrays (if Sender
doesn't query "media-ready", then the IPPFAX protocol is an Electronic
Document Transfer Protocol... if Sender cares for certain that the
document was correctly imaged then having Sender query "media-ready" makes
sense...).
Scaling is a FEATURE intended to facilitate a wider range of
compatibility. We should allow this to work IPPFAX will be most useful if
we enable SYSTEMS that perform the desired function. The PERCEPTION of a
sheet going in the scanner and simultaneously coming out on a remote
printer is, of course, just that... a PERCEPTION.
----------------------------------------------
Harry Lewis
Chairman - IEEE-ISTO Printer Working Group
http://www.pwg.org
IBM Printing Systems
http://www.ibm.com/printers
303-924-5337
----------------------------------------------
"Wagner,William" <WWagner at NetSilicon.com>
Sent by: owner-ifx at pwg.org
06/05/2003 06:40 PM
To
"Hastings, Tom N" <hastings at cp10.es.xerox.com>, "Gail Songer"
<gail.songer at peerless.com>
cc
<ifx at pwg.org>
Subject
RE: IFX> Media-Ready [and is IPPFAX a Device Protocol or an Electronic
Document Exchange Protocol?]
Although I have no strong feelings on this, I recall several thoughts from
"the early days" of this activity. Granted that much has happened since
and these ideas may no longer be germain, some vestage may explain why
the medi-ready requirement existed.
1. It was called QualDocs, not FAX. It was not intended to replicate
facsimile, but was to implement peoples perception of FAX (a reliable,
secure, sure way to "send a document over the wire" ) without the
defficiencies of existing FAX ( speed, quality, flexibility). The fact
that traditional fax is not necesarily reliable nor secure nor sure did
not mean that QualDocs could have the same problems. The notion was that
FAX was well established and prevalent and that there would need to be a
compelling advanage to QualDocs for it to be accepted.
2. The "sure" perception was that as an input sheet is being scanned in
the scanner, a facsimile of that sheet is comming out of the receiver.
This perception would be addressed by determining whether there was proper
media ready, and signalling when the last sheet was correctly printed.
Presumably, if the tranmission would be stored rather than printed, the
user would be notified, would have the option of cancelling and would have
the option to ask for an asynchronous notification when the document was
printed.
Bill Wagner
-----Original Message-----
From: Hastings, Tom N [mailto:hastings at cp10.es.xerox.com]
Sent: Thu 6/5/2003 7:50 PM
To: Gail Songer
Cc: ifx at pwg.org
Subject: RE: IFX> Media-Ready [and is IPPFAX a Device
Protocol or an Electronic Document Exchange Protocol?]
Gail,
Sounds like there is growing consensus to get rid of the
"media-ready" Receiver attribute in IPPFAX and get rid of the
RECOMMENDATION that the Sender query it. This makes IPPFAX even simpler.
Also with the choice media type, there is yet another
reason for the Sender not to query the Receiver's "media-ready" attribute.
The Sender can assume that the choice a4 or letter is supported for
IPPFAX and doesn't even have to query the Receiver's "media-supported"
attribute.
Tom
-----Original Message-----
From: Gail Songer
[mailto:gail.songer at peerless.com]
Sent: Thursday, June 05, 2003 08:12
To: Hastings, Tom N
Cc: ifx at pwg.org
Subject: RE: IFX> Media-Ready [and is
IPPFAX a Device Protocol or an Electronic Document Exchange Protocol?]
Hi Tom,
I’ve been mulling this topic and I
believe that media-ready was required because we were going to require the
client to format the job based on the size of the paper that could be
printed (sender makes right).
However, now that we allow scaling and
that we are focusing repositories, maybe this requirement can be lifted.
Gail Songer
Peerless Systems Corp
gsonger at peerless.com
-----Original Message-----
From: Hastings, Tom N
[mailto:hastings at cp10.es.xerox.com]
Sent: Friday, May 30, 2003 3:06 PM
To: Gail Songer
Cc: ifx at pwg.org
Subject: RE: IFX> Media-Ready [and is
IPPFAX a Device Protocol or an Electronic Document Exchange Protocol?]
Gail,
I suspect that the reason that the IPPFAX
spec says that the Receiver MUST support "media-ready" was because the
spec says that the IPPFAX Sender SHOULD query the "media-ready" Printer
attribute.
I also think that the mind set of IPPFAX
had been a single Device, so that the fan-out to multiple devices wasn't
even a consideration in being difficult to reflect the "media-ready"
value(s) correctly. For example, the statement in the Introduction:
"The target market for an IPPFAX receiver
is a midrange imaging device that can support the minimum memory
requirements that are required by the data format PDF/is, but the image
format is structured in such a way that the Receiver is not required to
include a disk or other permanent storage."
On the other hand, the definition of
Receiver is:
"Receiver The Printer object that
accepts IPPFAX protocol operations and receives the Document sent by the
Sender. A Receiver offers the IPPFAX Print Service (by definition)."
So the real question is:
OK that the IPPFAX Sender not bother with
querying "media-ready", but should send the IPPFAX PDF/is document whether
the media is ready or not?
If the Sender doesn't query
"media-ready", then the IPPFAX protocol is an Electronic Document Transfer
Protocol, i.e., get the bits from the Sender to the Receiver, rather than
get the Quality Document Successfully Printed onto Paper Service. The
mind set of the WG does shift from one paradigm to the other from time to
time (and from place to place within the IPPFAX Protocol spec itself).
As another example of this vacilation
between defining a Device Protocol versus an Electronic Document Exchange
Service, is the idea that the IPPGET notification is going to indicate
whether the paper got printed OK. To me that means we are talking about
getting the document successfully transferred to paper. Therefore, with
that mind set, having the Sender query the "media-ready" makes a lot of
sense if the Sending User cares about knowing for certain that the
document was correctly imaged onto paper.
Tom
-----Original Message-----
From: Gail Songer
[mailto:gail.songer at peerless.com]
Sent: Friday, May 30, 2003 06:32
To: ifx at pwg.org
Subject: IFX> Media-Ready
At Wednesday’s telecom,
we discovered that Media-Ready was Required in one spot and optional in
another. Ira was of the opinion that it should be PROHIBIED.
Does anyone else have
opinion (or remember why it was “Required”?)
Gail Songer
Peerless Systems Corp
gsonger at peerless.com
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