These printers use the CB435X cartridge:

HP LaserJet P-1000 Series

HP LaserJet P-1002

HP LaserJet P-1003

HP LaserJet P-1004

HP LaserJet P-1005

HP LaserJet P-1005 N

HP LaserJet P-1006

HP LaserJet P-1006 N

HP LaserJet P-1009