Bruce, here's the answer to your question.

Fred Grevin
===================================================================

The answer is that PDF/A permits all compression types supported by PDF
itself EXCEPT as noted in the respective Parts of ISO 19005.

PDF/A-1 (ISO 19005-1:2005) prohibits the use of LZW. Since it's based on
PDF 1.4, PDF/A-1 does not include JPEG2000.  The Specification for PDF
1.4 can be downloaded from the Adobe website.

PDF/A-2 (ISO 19005-2) is based on ISO 32000. The compression schemes
available in this version of PDF (and thus in PDF/A-2) are detailed in
Table 6 of ISO 32000-1:2008. LZW is still prohibited.  A free copy of
ISO 32000 may also be downloaded from Adobe's website.

I hope this helps.  Have a good weekend.

Duff Johnson, CEO
Appligent Document Solutions
22 E. Baltimore Ave
Lansdowne, PA 19050
+1 610 284 4006
+1 617 553 1934 (direct)
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