With the Officejet Pro K550 series HP introduces a color ink jet printer, which shall be an alter-native to the color laser printers of the starter class (e.g. HP Color Laserjet 2600n).
The HP Officejet Pro Models (K550, K550DTN and K550DTWN) available up to now are said to print up to 37 pages B/W and 35 color pages per minute with the Scalable Printing Technology (SPT). The HP Officejet Pro series has two separated extra wide permanent printheads and is equipped with a modular ink system with four separately replaceable ink cartridges. Printings in laser quality shall be achieved by altogether 4224 nozzles. 1056 nozzle per color are available in each of the printheads according to HP. The drop size of the black/yellow printhead is 9 picoliter and of the magenta/cyan printhead 6 picoliter.
The new HP Vivera cartridges No. 88 used in these printers look very similar to the cartridges No. 10, 11 and 13. According to HP the black cartridge contains pigment ink and the color cartridges as usual dye-based ink. The cartridges are offered in two various filling quantities. The first series C9385 (20.5 ml), C9386, C9387 and C9388 (9 ml) for users with a less print volume and a further series C9396HC (58.9 ml), C9391HC, C9392HC and C9393HC (17.1 ml) for users with a higher print volume. HP indicates a page yield of 2,350 resp. 825 pages by black and 1,200 resp. 625 pages by color printouts.
The printing costs amount 5.5 cent/color page (15 % coverage) and 1,5 cent/text page (5 % coverage). That shall reduce the printing costs in the color range by 30 % compared with a similar color laser printer and the costs in the black range by 25 % compared with a similar monochrome printer.This comparison is based on OEM prices, only.
An assimilable laser printer in the starter class (i.e. HP Color LaserJet 2600n, recommended retail price 389 â‚¬) is said to print 8 DIN A4 pages/minute (b/w and color) in the normal calibration. The page yield of the black cartridges is indicated with 2,500 pages and the color cartridges with 2,000 pages at a printing quality of 600 x 600 dpi.