Copier toner is designed for use with Xerox Document Centre 220 Digital Copier, Document Centre 220, Digital Copier (Simplex Copier), Document Centre 220 ST, Document Centre 230 Digital Copier, Document Centre 230 Laser Printer, Document Centre 230 ST, Document Centre 420 ST, Document Centre 420 Digital Copier, Document Centre, 426 Copier-Printer, Document Centre 426 Digital Copier and digital BookMark Copier. Toner is specially formulated and tested to provide the best image quality and most reliable printing you can count on page after page. Xerox Genuine Supplies and Xerox equipment are made for each other. Cartridge yields approximately 26,300 pages.