A toner cartridge also called a laser toner is a disposable component of a laser printer. Containing a toner powder mixed with a super fine and dry mixture of plastic materials along with carbon, combined with black or other colouring agents helps in printing the actual image on paper. The Ac black toner cartridge coming under the Laserjet cartridges category is patronized for its superior black printing colour. Compatible with many printer models, the Prash black toner cartridge employs the Laserjet print technology. PRASH compatible toner cartridges tested for print quality. Compatible For : PRASH Sp 300 Compatible For Ricoh SP 300 Toner Cartridge