If there's no CUPS drivers, then there is no OS X drivers for that printer. You can try using the HP LaserJet 4 driver as thats a standard Post Script Driver.
If there's no CUPS drivers, then there is no OS X drivers for that printer. You can try using the HP LaserJet 4 driver as thats a standard Post Script Driver.
Glad I could help. The HP LaserJet 4 printer driver is a widely used driver. It works for almost all post script laser printers if there's no manufacturer driver available for download. As long as it doesn't print jibberish, then you're ok.