HP Color LaserJet CM1017 MFP is a good choice for the small or home office user who needs high-quality laser prints–particularly graphics–but not necessarily fast prints. This $700 color laser multifunction printer prints, scans, copies, and includes built-in media card readers, a rarity for laser printers.
The HP Color LaserJet CM1017 MFP measures 17.3 inches wide, 20 inches deep, and 21.3 inches tall, and it weighs nearly 50 pounds. The top-mounted flatbed scanner and control panel sit atop the body like a flat hat..
Although multifunction laser printers are generally office-oriented, the Color LaserJet CM1017 MFP lacks fax functionality, which may be a deal breaker for some offices. This Laser jet printer also consists of a media card reader for printing descent quality photos that can be useful in certain industries such as real estate or insurance. The cheap CM1017 comes with a 300MHz processor and 94MB of RAM standard (upgradeable to 224MB). Duplex, or two-sided, printing is a manual operation, as the CM1017 lacks a built-in duplexer. The copy features of CM1017 are basic. This cheap printer consists of black and color cartridge. New 2,500-page black cartridge costs about $75, while each 2,000-page color cartridge (cyan, magenta, and yellow) costs about $83.
HP Color LaserJet CM1017 prints black text at 6.81ppm, black graphics at 6.31ppm, color text at 5.91ppm, and color graphics at 6.16ppm. It scanned a grayscale document at a rate of 3.39ppm and a color document at 2.61ppm. Black text obtained from the printer is dark, sharp, clean, and well-formed.
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Ink cartridge Description
TECHNICAL FIELD
The invention relates to an ink cartridge in which pressurized air is applied into an air chamber between an outer case and an ink pack thereby to discharge ink from the ink pack.
RELATED ART
Generally, an ink jet recording apparatus for business use is constructed so that a large-volume ink cartridge is exchangeably set in a body of the recording apparatus and ink is supplied through an ink supply tube to a recording head mounted on a carriage directly, or through a sub-tank, as shown in Japanese Patent Publication JP-A-2001-199080 for example.
Further, the ink cartridge is so constructed that a deformable ink pack under external pressure is housed in an outer case which can hold air-tightness, exposing only an ink outlet of the ink pack. Pressurized air is supplied to the outer case from an air source for pressure in which the air pressure is adjusted at a constant pressure in advance, and the ink pack is pressurized by the air pressure thereby to supply ink to the recording head.
In such the construction, even if the air pressure in the air source for pressure is appropriately adjusted, unevenness in ink supply capacity is raised among the respective ink cartridges to the recording head, thereby causing a problem of deterioration in printing quality, in case that unevenness in flowing passage resistance is raised by differences in length of ink supply tubes connecting the respective ink cartridges and the recording head, or the sub-tanks, or in case that head differences are produced between the ink cartridges by arranging the ink cartridges vertically.
Therefore, an object of the present invention is to provide an ink cartridge having a pressure adjusting function with which the air force for pressurizing an ink pack can be set independently in the respective ink cartridges without depending on the air pressure supplied from the air source for pressure.