Yes, sorry 30x90 is correct here, contention is just the 2 10x15” media sizes.
From: ipp <ipp-bounces at pwg.org> On Behalf Of Anton Thomasson via ipp
Sent: Saturday, October 18, 2025 1:24 AM
To: ISTO-PWG Internet Printing Protocol workgroup discussion forum <ipp at pwg.org>
Cc: Anton Thomasson <antonthomasson at gmail.com>
Subject: Re: [IPP] [EXTERNAL] Media size issue for 10x15"
Hi
30x90 will be centimeters, which is the every-day unit for small-ish things in the rest of the world.
Nothing strange here, just SI/metric at work.
Br,
Anton
Den fre 17 okt. 2025 kl 23:30 skrev Michael Ziller via ipp <ipp at pwg.org<mailto:ipp at pwg.org>>:
Thanks, I'll attend.
Also, how do these IANA namings make any sense?
oe_photo-20x30_20x30in - 20x30 as in inches
om_photo-30x90_300x900mm - 30x90 as in ???
Is oN_photo-XxY just some shorthand which has no meaning in terms of units? 30x90 is not in inches, nor in mm.
-----Original Message-----
From: Michael Sweet <msweet at msweet.org<mailto:msweet at msweet.org>>
Sent: Friday, October 17, 2025 1:59 PM
To: Michael Ziller <mziller at microsoft.com<mailto:mziller at microsoft.com>>
Cc: ISTO-PWG Internet Printing Protocol workgroup discussion forum <ipp at pwg.org<mailto:ipp at pwg.org>>
Subject: Re: [EXTERNAL] [IPP] Media size issue for 10x15"
Michael,
> On Oct 17, 2025, at 3:57 PM, Michael Ziller <mziller at microsoft.com<mailto:mziller at microsoft.com>> wrote:
>> But I thought IANA did not permit duplicate paper size registrations:
> na_10x15_10x15in - already IANA registered
> oe_photo-s10r_10x15in - not IANA registered, but in MSN2.1
>> So won't they reject registering oe_photo-s10r_10x15in?
They don't validate the registry beyond conformance to the XML schema, avoiding duplicate dimensions for media size names is our thing.
That said, what I see is that MSN 2.1 defined both of these sizes - na_10x15_10x15in is an envelope size and oe_photo-s10r_10x15in is a photo size.
Let's discuss this at the next IPP concall and I'll remove one of the sizes and mark it for removal from the next revision of MSN.
________________________
Michael Sweet
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