We use the half-tapping foam with the ability of possession of the powder.You can save 2-5 gram toner for one Toner Catridge. TypeToner ... /TSupply Ability:300,000 Piece/Pieces per Month Detailed Product Description Compatible CLP315 Developer roller Toner cartridge parts Supply Roller Toner ... ,WR,SR,MR,DB,WB,OPC of Toner Catridges with the Brand of HP,Lexmark,Minolta,Brother,Canon,Samsung,Xerox,Epson ...