HP Toner C9730A Black for 645A

Consistently accurate color and precise images with HP chemically-grown toner.
Optimal print quality with new image mode feature.
Cost-effective operation with all-in-one HP toner cartridges.
HP Smart technology tunes particle charge for reliable results.
Rated A+ for service and reliability, PC Magazine August 2003..
Easy to use automatic alerts, on-line ordering with HP Smart printing technology.