This has been fixed in gutenprint 5.2.0~rc1-0ubuntu1:
gutenprint (5.2.0~rc1-0ubuntu1) intrepid; urgency=low
* New upstream release
- Corrected page size of PCL CUPS driver output
- Corrected CD position for Epson Stylus Photo R1900
- Epson Stylus DX8400/DX8450 print correctly
I discovered that the printer starts to print pages out when I set the
colour mode to grey-scale. Though, the printer prints all the colours
wrong. For instance instead of red it prints out yellow colour, which is
a bit strange as the colour mode is set to grey-scale so it shouldn't
print colour
** Attachment added: cups error log.
http://launchpadlibrarian.net/18669792/error_log
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Epson DX8450 prints blank pages in Ubuntu Intrepid
https://bugs.launchpad.net/bugs/272426
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** Changed in: cups (Ubuntu)
