HP 645A Cyan Original LaserJet Toner Cartridge - C9731A

Outstanding color

Consistently accurate color and precise images with HP chemically-grown toner

Consistently accurate color and precise images. HP chemically-grown toner formulas are designed together with the HP Color LaserJet printing system. The uniform size and spherical shape of HP toner particles ensure a broad range of colors, higher gloss, precise particle control and placement and reliable performance. With HP’s second generation toner, you get consistently accurate color, precise images and crisp, sharp text across a broad range of plain papers and HP plain and specialty papers.

Optimal print quality with new image mode feature[3]

For your most persuasive sales materials, presentations and photos, the HP printing system offers a powerful new combination. HP’s chemically-grown toner formula and HP High-gloss Laser Paper work together with the printing system’s new image mode to produce optimal print quality.[3]

Reliable, cost-effective

Cost-effective operation with all-in-one HP toner cartridges

Cost-effective, reliable operation comes with HP Color LaserJet printing supplies. HP 645A LaserJet Toner Cartridges are designed together with the printer to provide reliable operation. The all-in-one supplies design provides time-saving operation with fewer supplies to order and maintain. For further time savings, HP toner formulas are engineered to support in-line printing and fast fusing at lower temperatures for fast warm-up time and a quick first page out.

HP Smart technology[1] tunes particle charge for reliable results

Smart printing technology[1] in HP LaserJet toner cartridges and your printer monitors the environment, sensing temperature and humidity (available with HP Color LaserJet 5550 only).To ensure consistent print quality, the system makes continuous, automatic adjustments to particle charge.These dynamic electrophotographic adjustments optimize color density, calibration and consistency to produce high quality results over the life of the cartridge.

Rated A+ for service and reliability, PC Magazine August 2003

HP customers consistently give HP the highest ratings for service and reliability. According to PC Magazine (August 2003), HP offers the best service and reliability in the printer industry, receiving a #1 ranking in its annual service and reliability survey for the 12th year in a row, as well as an A+ grade the second straight time this grade was included.

Easy to use

Easy to use automatic alerts, on-line ordering with HP Smart printing technology[1]

HP printing supplies are easy to use and maintain. With innovative HP Smart printing technology in HP toner cartridges and your printer, you receive automatic alerts when a cartridge is low or out. With HP SureSupply you can enjoy convenient, on-line ordering. And HP offers an environmentally responsible take-back program for convenient return of your empty HP printing supplies. (Using genuine HP supplies ensures availability of all HP printing features).

When a color cartridge runs out, continue printing with the black cartridge[2]

Sometimes you don’t have time to reprint pages because a cartridge ran out during the print job. For the projects that just can’t wait, HP Smart printing technology gives you the choice to continue printing a limited number of pages with the black cartridge when any color cartridge runs out. For time critical projects you can finish the print job with consistently high quality results. (Using genuine HP supplies ensures availability of all HP printing features).

Easy to use and install with HP Smart printing technology[1]

HP printing supplies are easy to access through a convenient front door. HP Smart printing technology confirms that genuine HP toner cartridges have been installed correctly. And shake-free HP 645A LaserJet Toner Cartridges make your printing system even easier to use. (Using genuine HP supplies ensures availability of all HP printing features).