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When I fired command and see the printing result

 lpr -P printer-#1 -o fitplot test.pdf

Transparency PNG will be go black square.

But If I manually convert my PDF to Postscript and fired command.

lpr -P printer-#1 -o fitplot test.ps

Then its fine.

And I also try send PDF file in unfiltered way.

lpr -P printer-#1 -o fitplot -o raw test.pdf

it also fine.

I think problem is filtering process but still no idea..

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