I have no HP Printer at all, but the same result. As such I think it's OpenOffice which does the wrong think rather then the hplip (might have similar bug)
My printer is Samsung CLP610ND and when I select grayscale in prtinter dialogue OR Tools/Options/Print/Convert colors to grayscale, the printer acutally uses composite of CMY rather then the K toner. From a point of view this is actually much worsre then just go ahead and print in color!!!! This bug shall be assigned to the openoffice team, I have a look at Openoffice bugs, if they are aware or working on it. -- "Print black" does not use black ink cartridge https://bugs.launchpad.net/bugs/235399 You received this bug notification because you are a member of Registry Administrators, which is the registrant for Debian. _______________________________________________ Mailing list: https://launchpad.net/~registry Post to : [email protected] Unsubscribe : https://launchpad.net/~registry More help : https://help.launchpad.net/ListHelp

