GM Supplies.com carries the complete range of Risograph toner cartridges for all Risograph laser printers and copiers. All orders over $50.00 on Risograph RZ 990 Series Black Duplicator Ink Cartridge, S-4841 for use in: RZ 990 are accompanied with free shipping, on-time delivery and order tracking. So, buy with confidence from GM Supplies.com , a leading distributor of Risograph ink and Risograph toner cartridges for inkjet and laserjet printers and copiers. Selecting a printer model from the box above lists all the Risograph toner cartridges and other supplies for that laserjet printer. If you are looking for toner cartridges for Risograph copiers, you may find it in the copier supplies section.