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| Canon Bubble Jet Technology | |
Want to increase your Bubble Jet IQ ? Come on over >> Graininess Invisible to the Human Eye Ink-jet printers output images by concentrating large numbers of dots on a page. For this reason, graininess tends to stand out when photographs with subtle highlights, such as clouds and other scenery, are printed. To achieve photo-quality output, it is essential to produce smooth images by reducing this graininess. After studying the optical characteristics of the human eye, Canon found that it could greatly reduce graininess by lowering the volume of ink discharged and using inks of less density than conventional inks. At normal densities, dots become invisible to the human eye when the volume of ink discharged goes below 1 pl. Moreover, the lower the density of the ink, the harder it is to perceive the dots they form, which in turn reduces graininess and leads to smaller dots being used. The BJC-8200 uses 4-pl fine inks together with photo inks with one-sixth the density of regular ink, producing the same effect as 0.67-pl droplets and 1,800-dpi resolution at normal ink density. The result is photo-level image quality with graininess that is imperceptible to the naked eye.  |
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