How to install HP Laserjet 1020 driver for Mac OSX? - Corpocrat
Turn on the HP laserjet 1020 printer and connect to your Mac PC through USB cable. Add new printer select the plus sign. On the HP printers list select HP Laserjet 1022 (not 1020) Once installed print a test page. The above trick should also work for HP Laserjet 1020 plus model in Mac.