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These settings are:
• Lightness: it makes the whole image darker or lighter.
• Saturation: intensifies or weakens the colors. The final image results more vivid
or grayer.
• Color Balance: corrects the Red, Green and Blue of the whole image. For
example, if the image has a yellow color cast, increasing the blue color balance
may reduce it.
• Black Enhancement: it makes all areas over a specified threshold of darkness
completely black. This feature should be used when text that should be black
appears in the copy as gray.
• Background Cleaning: it makes all areas below a specified threshold of
lightness completely white. It is useful when copying drawings that have a
colored (not white) background, like blueprints.
• Enhance Grays: makes the unsaturated colors (colors that are very close to
gray) to be gray. This feature is used to improve the appearance of gray areas
of the image, when the copy has previously shown a light colorcast in these
areas.
To see these settings in action, please refer to section 3.4. An example of how to use
the Enhance Grays setting is provided in section 2.3.2.2.
3.1.6.2 Image Enhancement
Image enhancement is used to improve the original image or a portion of it. The final
image will not be an exact copy of the original but, rather, a re-interpretation of it that
corrects some of the original's shortcomings (e.g. stains, fuzziness).
There are two types of image enhancement available in the Touch Screen:
• Blur: smoothing of the whole image. It is used, for example, when the original is
worn out and has spikes or stains that you don't want appearing in the copy.
• Sharpen: enhancement of the edges. It is used, for example, when a drawing
has smudged text or lines.
Blur and sharpen are not mutually exclusive, good results are sometimes obtained by
combining both of them: an application example is provided in section 3.4.
Image Enhancement is optional and should only be selected if necessary, as the final
image may result not coherent with the original.
Color Reproduction for the HP Large Format Color Copiers family: cc800ps, 815mfp, 5500mfp and 4200 scanner
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