The HP Photosmart 8250 retains the 4,800×1, 200dpi resolutions, the long-life Vivera inks, and the relatively speedy printing of its predecessor. HP Photosmart consists of an innovative reservoir system fed from six separate ink tanks. Although it functions serviceably as a speedy text printer (especially with the optional duplexing attachment), the HP Photosmart 8250′s real strength is as a personal photo lab.
HP cheap Photosmart 8250 measures 17.6 by 15 by 6.3 inches and weigh almost 19 pounds, the HP Photosmart 8250 will dominate any desktop or printer stand where it resides. This cheap Printer also contain a USB 2.0 cable, five compact color ink cartridges (cyan, magenta, yellow, light cyan and light magenta) and a larger-capacity black ink tank. Installing the HP Image Zone software and drivers takes another 10 minutes or so.
The cheap HP Photosmart 8250 in standalone mode is more convenient than printing with it from a Windows or Macintosh computer. In addition to printing from a computer, the HP Photosmart 8250 supports PictBridge-compatible digital cameras or your choice of Compact Flash I/II, SD/MMC, SmartMedia, Memory Stick, and xD-Picture cards. A big 2.5-inch LCD along with built-in preview and editing tools let you crop, zoom, brighten inky shadows, banish demon red-eyes, or print frames from video clips.
Prints obtained from this cheap printer are very good. The colors of the text are good, with realistic flesh tones and excellent saturation but a slight blue cast on some prints. There was lots of detail in highlights and shadows, and we saw little banding.
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Printer capable of controlling position of covering a nozzle of an ink cartridge Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a printer capable of controlling position of covering a nozzle of an ink cartridge, more particularly, to a printer capable of controlling a position of covering a nozzle of an ink cartridge to determine whether or not to pump ink out of the nozzle of the ink cartridge.
2. Description of the Prior Art
Inkjet printing system is now being commonly utilized in all types of fax machines, printers, photocopiers and other office equipment. The ink jet printing system includes a print head capping device for ensuring that the print head functions properly. The print head capping device will cover the print head to prevent the ink in the nozzle from drying up and congesting the print head while the ink jet system is not active.
At the moment, the ink jet printing system on the market usually installs an additional pump mechanism at an end of the print head capping device. The main function of the additional pump mechanism is to refine the condition of the dry nozzle before performing a print out such that it will not affect the quality of the print out. Usually the pump mechanism makes only a single journey, which means that when a cover covers the nozzle of the ink cartridge, the carriage of the ink cartridge and the cover stop at a fixed position, and the pump mechanism will stop at the fixed position to pump ink out of the nozzle of the ink cartridge. If the ink jet printing system is set to support six-color printing there will be a problem due to the nature of the black ink pigment, therefore the designer does not want the black ink to be pumped by the pump mechanism so as to prevent the black ink from drying up in the pump mechanism tube resulting in a congestion. Additionally, as observed from lab experimentation, when the print head capping device is opened and the ink cartridge is left unutilized for a month, the ink that usually dries up first is the color ink and not the black ink. Therefore the ink jet printing system in the market is not equipped with a design of selectively pumping out only the color ink and this results in a reduction in the quality of an image printout.