Bring out the best in your printer and your work - by using Hewlett-Packard printer accessories and supplies. They’re designed and manufactured to meet the same high standards as your Hewlett-Packard printer. They’ll work with your printer to deliver exceptional print quality and years of reliable performance. HP 643 LaserJet Printing Supplies provide fast, easy, brilliant results. New HP ColorSphere toner is tuned with the printing system to optimise quality and reliability for higher productivity and lower printing costs. Cyan ~10,000 pages HP 643 LaserJet Printing Supplies with HP ColorSphere Toner provide fast, easy, brilliant colours. Improved gloss enables your HP Color LaserJet printing system to produce a dynamic range of bright, brilliant and more intense colour. HP 643 LaserJet Printing Supplies with HP Smart Printing Technology[2] enable the cartridges and the printer to make continuous adjustments that optimise print quality and reliability - and provide a lower overall cost of printing.