Canon Bubble Jet Technology       Color Gear Color-Matching Technology When using color laser beam printers, Bubble Jet printers and other high-image-quality color printers, color-matching technology is a vital element that makes it possible to reproduce colors according to user preferences. Usually, users adjust colors according to what they see on their PC screen, then output images on a color printer. However, while colors on a PC display are expressed in the three primary colors (RGB), printers use colors constructed in CMYK, making perfectly matched output impossible. Printers also generally have a narrower scale of color reproduction than displays, meaning that some color ranges visible on the monitor cannot be output. Color-matching technologies compress the color range of displays to match that of printers, which allows printers to reproduce colors the way users see them on-screen. Using the constant hues visible to the human eye, we developed a compression method for non-linear color spaces. The result is a radical improvement in color matching precision from conventional techniques. Canon's color matching technology not only matches colors with PC displays, but it also incorporates device-matching methods to ensure unified color reproduction and a color-proofing function to match colors with those of printed materials. For example, in offices differences in the characteristics of color input/output devices, such as scanners, digital cameras, displays and printers, inevitably cause subtle changes in the shades of color images. Canon's Color Gear system matches colors by taking these individual characteristics under consideration. Color Gear has the ability to provide optimal color spaces for any type of image, from text, graphics and other diagrams to photographic images. In addition, using a profile containing data on thousands of colors, Color Gear is able to compensate for differences in printing paper, ink and toner to accomplish highly precise color matching. The system also achieves color matching suited to the special features of Canon's color laser beam printers and full-color image scanners. It can be used with standard color management systems, including Apple's ColorSync or ICM for Microsoft Windows. Fullcolor image data can be perfectly reproduced, even if it is transmitted over networks. image (Color Gear System)   Canon color matching Conventional matching   << back
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