I am not proposing any change to IPP from the current definition
of impression which the Model document has as:
An "impression" is the image (possibly many print-stream pages in different
configurations) imposed onto a single media page.
I am only proposing to add a warning note to the Job Monitoring MIB,
since we have agreed that impressions include passes past the marker
that don't make marks, on even the last sheet.
I propose to add the following note to the definition of the
term impressions (to which all attributes and objects contain a reference)
that we have in the PWG Job Monitoring MIB:
NOTE - Since impressions include blank sides, it is suggested that
accounting application implementers consider charging for sheets, rather
than impressions, possibly factoring in value of the sides attribute for
possibly different charges for one versus two-sided printing, since some
users may think that impressions don't include blank sides.
Here is the definition that we agreed to in principle at the L.A. meeting
and for which there still seems to be support from most respondents:
Impression: For a print job, an impression is the passage of the entire
side of a sheet by the marker, whether or not any marks are made and
independent of the number of passes that the side makes past the marker.
Thus a four pass color process counts as a single impression. One-sided
processing involves one impression per sheet. Two-sided processing
involves two impressions per sheet. If a two-sided document has an odd
number of pages, the last sheet still counts as two impressions, if that
sheet makes two passes through the marker or the marker marks on both sides
of a sheet in a single pass. Two-up printing is the placement of two
logical pages on one side of a sheet and so is still a single impression.
See "page" and "sheet".
If you have any objections to the note, please voice them today,
since we are forwarding the Job Mon MIB as an Internet-Draft today.
At 08:45 12/19/1997 PST, Ron Bergman wrote:
>>On Thu, 18 Dec 1997, Tom Hastings wrote:
>>> At 18:03 12/18/1997 PST, Ron Bergman wrote:
>> >I agree with Bill on this issue, especially that "the point may be moot"
>> >Have you asked Kinkos how they charge in this situation?
>>>> I believe that Kinkos charges by the sheet for printing from a PC.
>> For copying, they have a different rate for one versus two sided
>> copying. So far, I have not run into a duplex printer at Kinkos,
>> so I don't know whether they have a policy for two-sided printing.
>> But if the printing charge is like the copying charge, this issue
>> would be moot.
>> >We should stick with the agreement per the LA meeting.
>>>> Then we may want to add a note that impressions is more for monitoring
>> and sheets is for monitoring and accounting.
>>>Could you post a copy of the note to be added to the DL?
>>>>>> There is another comment on this issue that was sent only to the IPP DL
>> suggesting a rather simple algorithm that only worries about the last
>> sheet, not any other sheets, and only as a recommendation. Is that a good
>>>The proposed change sounds reasonable.
>>> >X-Sender: spencerdr at vipmail.earthlink.net>> >Date: Thu, 18 Dec 1997 10:03:04 PST
>> >To: "Wagner, William" <WWagner at digprod.com>
>> >From: David R Spencer <david at spencer.com>
>> >Subject: RE: IPP> Re: JMP> URGENT: Should impressions include blank last
>> > page back sides or not?
>> >Cc: ipp at pwg.org>> >Sender: ipp-owner at pwg.org>> >X-MIME-Autoconverted: from quoted-printable to 8bit by
>> garfield.cp10.es.xerox.com id LAA26719
>> >I'm just monitoring the group, but isn't there a significant difference
>> between blank pages within a document and documents in a duplex job with an
>> odd number of pages causing the COMPLETELY blank back side of the last page
>> to be counted? Almost all page printers include an option for not printing
>> such completely blank pages, and I think the point about user concern is
>> well taken.
>> >Therefore, perhaps the sentence in the definition of impression:
>> >> If a two-sided document has an odd number of pages, the last sheet still
>> counts as two impressions, if that sheet makes two passes through the
>> marker or the marker marks on both sides of a sheet in a single pass.
>> >should be:
>> >If a two-sided document has an odd number of pages and there are no marks
>> to be made on second side of the last sheet, the last sheet should count as
>> one impression, instead of two, even if that sheet makes two passes through
>> the marker.
>> >David R. Spencer
>> >Spencer & Associates Publishing, Ltd.
>> >Three Giffard Way, Melville, NY 11747-2310
>> >david at spencer.com>> >1-516-367-6655 Fax:1-516-367-2878
>> >http://www.spencer.com>>> Ron Bergman
> Dataproducts Corp.