From: Michael R Sweet (msweet@apple.com)
Date: Mon Jul 21 2008 - 17:25:46 EDT
All,
In today's telecon I brought up a question about whether it would be
a benefit to define a set of document formats that devices must
support. This would have large benefits for interoperability and
the ability for clients of all shapes and sizes to print without
specialized printer drivers.
The wording I am thinking of is:
REQUIRED DOCUMENT FORMATS
IPP v2 devices MUST support one of the following document
formats:
document-format Details
----------------------------------------------------
application/pdf ISO 32000-1:2008,
ISO 19005-1:2005 (PDF/A),
or PDF/IS?
application/xhtml+xml XHTML-Print
image/jpeg W3C JFIF* encapsulation
image/png ISO 15948, RFC 2083
----------------------------------------------------
* http://www.w3.org/Graphics/JPEG/jfif3.pdf
I have not included application/postscript in the list because it
isn't standardized beyond simple page descriptions, both in the
official and real-world senses, and in many cases PostScript
printers require some level of device-dependent commands to be
used (think PPD files).
Likewise, I have not included image/tiff since TIFF is a catch-all
for thousands of sub-formats, and the most common sub-formats
(TIFF-G3 and TIFF-G4) are limited to reproduction of monochrome
graphics which make them less useful as a general printing format.
Comments?
-- ______________________________________________________________________ Michael R Sweet Senior Printing System Engineer
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