Re: [IPP] IPP Registration Request for Addition: New keywords for the "media" attribute

Christoph,

> On Mar 19, 2021, at 4:28 PM, Christoph Päper <christoph.paeper@crissov.de> wrote:
> 
> Kennedy, Smith (Wireless & IPP Standards) via ipp <ipp@pwg.org>:
>> 
>>  So if no other changes, this would be the registration:
>> 
>> Attributes (attribute syntax)
>>   Keyword Attribute Value                                      Reference
>>   --------------------------------------------------------     --------------
>> media (type2 keyword | name(MAX))                              [RFC8011]
>>   na_arch-e1_32x40in                                           [HP20210302]
>>   oe_photo-s8r_8x12in                                          [HP20210302]
>>   oe_photo_s12r_12x15in                                        [HP20210302]
> 
> Isn’t “S12R” 12in by 18in (2:3), while 12in by 15in (3:4) is “12R”?

Yes, good catch.  This should be:

  oe_photo_12r_12x15in                                        [HP20210302]

>>   oe_photo-14x18_14x18in                                       [HP20210302]
>>   oe_photo-16x20_16x20in                                       [HP20210302]
> 
> As already noted, this would be “16R”.
> 
>>   oe_photo-22x28_22x28in                                       [HP20210302]
>>   oe_photo-22r_22x29.5in                                       [HP20210302]
> 
> One reference gave “22R” as 20in by 29.5in, which makes no sense. 

Yes, the width is usually the number before the "R" (3R is the exception).

>>   oe_photo-24x30_24x30in                                       [HP20210302]
>>   oe_photo_24r_24x31in                                         [HP20210302]
> 
> “24R” is elsewhere listed as 24in by 31.5in. 32in would make even more sense. 

Both of the following sources list 24R as 24x31.5:

    https://en.wikipedia.org/wiki/Photo_print_sizes
    https://mainthebest.com/sizes/24r-sizes/

which would be 7.5 inches larger than the width (just like 22R), so this entry should be:

  oe_photo_24r_24x31.5in                                         [HP20210302]

Unfortunately, I'm having a hard time finding a definitive source for the larger "standard" sizes... :/

>>   oe_photo_30r_30x40in                                         [HP20210302]
>>   om_photo-30x40_300x400mm                                     [HP20210302]
>>   om_photo-30x45_300x450mm                                     [HP20210302]
>>   om_photo-35x46_350x460mm                                     [HP20210302]
> 
> Is this the metric approximation of English 14x18 above? 

Yes, several of these metric sizes are close to existing English sizes, but not exactly.

>>   om_photo-40x60_400x600mm                                     [HP20210302]
>>   om_photo-50x76_500x760mm                                     [HP20210302]
> 
> I’ve checked some photo print services, they are offering a poster size of nominal 50cm by 75cm, but not 76cm. 

Let's see what Smith can find out from his end...

________________________
Michael Sweet

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