http://www.pwg.org/pipermail/ipp/2017/019352.html

Attributes (attribute syntax)
   Keyword Attribute Value   Reference
   -----------------------   ---------
 media (type2 keyword | name(MAX))  [RFC8011]
   jpn_kaku1_270x382mm              [APPLE20171002]

Add Kaku 1 envelope size registration.
Add Kaku 1 envelope size registration.
