Using an HP DesignJet 755CM plotter under OS X Yosemite
If you have an old HP plotter, you will find that the Mac OS X drivers available from HP’s support site can not be installed because they are in an old VISE .hqx format installer.
If you go and get a generic PPD for the printer, and stick it gzipped in /Library/Printers/PPDs/Contents/Resources then you will be able to select it as a printer type when you add the printer.
Attached is the one I found and used. It needs more work, I am getting postscript errors at the end of prints which can use a lot of paper. But it is working.
Update: It looks like you can disable postscript error printing with…
defaults write com.apple.print DoPostScriptErrorHandler NO
…and re-enable it with…
defaults delete com.apple.print DoPostScriptErrorHandler
Update2: The defaults thing does not appear to work.
Update3: Using HP JetDirect as the protocol instead of LPR seems to have fixed the PostScript error problem.
Thanks for posting this. I’ve been searching for this PPD for quite a while. Did you did it out of an Adobe set per chance?
Works for me, OS X 10.13.4 on 20180518. Copied gzip directly to /Library/Printers/PPDs/Contents/Resources and renamed to ‘HP DesignJet 755cm.gz’
Selected with JetDirect card & protocol. After print completed (looks good, color from Fusion360 demo sheet size B), there was about a ‘C’ sized drawings worth of blank, followed by text indicating “Error Undefined, OFFENDING COMMAND: Stack”
Thanks, would like to improve it too…tried with Windows drivers and Parallels multiple times. You’ve saved my DesignJet Thanks.