MP800R is best suited for home users and amateur photography enthusiasts who want a wealth of photo manipulation features and can do without faxing. The Canon Pixma MP800R Photo all-in-one stands 18.6 inches wide, 19.3 inches deep, and 9.5 inches tall and weighs more than 27 pounds. Its glossy black and brushed silver plastic exterior is classic Pixma design.
The control panel is simple for a printer with so many functions. The Pixma MP800R is ideal for small offices or homes with multiple PCs and users. A built-in 802.11g/b adapter of MP800R provides the option of wireless printing.
The Canon MP800R uses five ink cartridges: a dye-based black, a pigment-based black, and separate cyan, magenta, and yellow tanks. The cost per page of the MP800R is the same as that of the MP830: both black and color text prints will cost an inexpensive 2 cents per page.
The speed of Canon Pixma MP800R’s is quite impressive, especially when compared to an office all-in-one. It produced text at 7.97 pages per minute (ppm), scanned grayscale photos at 11.88ppm, scanned color photos at 10.75ppm, and printed 4×6 photos at 1.84ppm. The 4×6 photo prints showed good flesh tones, sharp detail, and only the slightest compression in the dark end of the grayscale. Colors scan show good detail and color representation. The grayscale scan was also good, though it also showed slight compression in the dark end of the grayscale, resulting in some detail loss in shadow areas.
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Method of normality decision with regard to ink cartridge and printer actualizing the method Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method of normality decision with regard to an ink cartridge, which is detachably attached to a printing apparatus like an ink jet printer or an ink jet plotter, as well as to a printer that actualizes the method.
2. Description of the Related Art
The type of ink usable for a printer generally depends upon the type of the printer, such as the ink jet printer or the dot impact printer. Byway of example, it is assumed that a certain type of ink is usable for a specific printer. If another type of ink, which has different properties from those of the certain type of ink and is not generally used for the specific printer, is mistakenly attached to the specific printer, a desired printing result may not be obtained. In another example, the ink jet printer may encounter the troubles due to a difference in viscosity of ink, such as a poor printing result or clogging nozzles on a print head.
A proposed technique to solve this problem utilizes a first storage unit incorporated in an ink cartridge, in which identification data representing a type of the ink cartridge is stored, and a second storage unit incorporated in a printer main body, in which comparative data for the purpose of comparison are stored. The technique compares the identification data with the comparative data and determines whether both the data are coincident with each other. The printing process continues in the case where both the data are coincident with each other. When both the data are not coincident, on the contrary, the inconsistency is informed and the printing process is discontinued.
The identification data stored in the first storage unit of the ink cartridge may, however, be destroyed by the static electricity or another cause. An oxide layer formed at a contact between the storage unit in the printer main body and the ink cartridge or at a contact between the storage unit in the ink cartridge and the printer main body may cause a failure of electrical contact. In such cases, there is a fear of determining that the ink cartridge is abnormal or unsuitable, while the ink cartridge itself is actually normal and suitable.