Amazon.com: MicroMICR MICRTHN42A MICR Toner Cartridge for HP LaserJet 4240, 4250, 4350 Series Intelligent Printers, Black : Office Products
A AZTECH Compatible Toner Cartridge for HP Q5942A 42A Work with HP Laserjet 4200n 4200dtn 4300n 4300tn 4240 4250 4250n 4350n 4350dtn Printer Ink (Black, 1-Pack) - Walmart.com
Q5942A 42A Toner Cartridge Compatible for HP LaserJet 4250n 4350n 4350dtn 4250tn | eBay
HP LaserJet 4250 Toner Cartridge
HP 42A Black Toner Cartridge (Q5942A) for LJ 4240/4250/4350 - New Dimensions
Black Toner Cartridge Compatible with HP LaserJet 4250n (V6940)