HP (Hewlett Packard) LaserJet 3055 (Q6503A) is a monochrome (black and white), multifunction printer. It functions as a laser printer, copier, fax machine and scanner. It has a print resolution of 1200 x 1200 dpi which makes each print clearer and sharper. It has a scanner optical resolution of 1200 x 1200 dpi, copier optical resolution of 600 x 600 dpi and fax resolution of 300 x 300 dpi. It has a print speed of 19 pages per minute and copy speed of 19 copies per minute. The HP laserjet 3055 has a 260 sheets total input capacity and 100 sheets face down output capacity. It includes 250 sheet capacity input tray, 10 sheet capacity bypass tray and 50 sheet automatic document feeder. It's media types are paper (plain, preprinted, prepunched, bond, colour, glossy, letterhead, light, heavy, recycled, rough), envelopes, transparencies, labels, cardstock. It also features 64 MB RAM, parallel and USB connectivity. HP laserjet 3055 uses 12A and 12X black cartridge. Cartridge model numbers are Q2612A and Q2612X.