Gareth -- I was able to solve the problem by switching from the recommended "pxljr" driver to the alternate "hpijs" driver. Go to System -> Administration -> Printing -> HP ColorLaserjet 3600, then click to change the make and model, choose HP -> Color LaserJet 3600, click on the "hpijs" driver, and accept the new postscript-printer- definition (PPD) file as is. That should solve the problem.
-- HP3600 recommended driver fails to print some colours https://bugs.launchpad.net/bugs/228635 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs