Ricoh InfoPrint Pro C900AFP InfoPrint Manager - Page 248

Rendering intents, Perceptual, Saturation, Media-relative colorimetric, Absolute colorimetric

Page 248 highlights

photograph with the ICC profile for your camera. Then, when you want to print that photograph, the color management system converts the color data from the camera into the PCS. The printer then uses its ICC profile to convert the photograph data from the PCS into its color space, and prints the photograph as accurately as it can. For more information about the ICC, ICC profiles, and the PCS, see the ICC Web site: http://www.color.org Rendering intents Rendering intents indicate what you want a printer to do with colors that are outside its gamut. ICC profiles support these rendering intents: v Perceptual If an image includes any colors that are out-of-gamut for the printer, the printer adjusts all the colors in the image, even those that are already in the gamut of the printer, so they are all in-gamut and maintain their color relationships to each other. The result is an image that is visually pleasing, but is not colorimetrically accurate. The perceptual rendering intent is useful for general reproduction of images, particularly photographs. v Saturation If a print job includes colors that are out-of-gamut for the printer, the printer replaces the out-of-gamut color with the nearest color in the gamut. It also adjusts the in-gamut colors so that they are more vivid. Saturation is the least used rendering intent, but it is useful for business graphics, such as images that contain charts or diagrams. v Media-relative colorimetric If a print job includes colors that are out-of-gamut for the printer, the printer substitutes the nearest in-gamut color; in-gamut colors are not adjusted. Colors printed on papers with different media white points might not match visually. The media white point is the color of the paper that the print job is printed on. For example, if you print an image on white paper, on off-white paper, and on blue paper by using the media-relative colorimetric rendering intent, the printer uses the same amount of ink or toner for each one and the resulting color is technically the same. However, the images might seem different because your eyes adjust to the color of the background and interpret the color differently. This rendering intent is typically used for vector graphics. v Absolute colorimetric All colors are mapped by using the same method as the media-relative colorimetric rendering intent, however, all colors are adjusted for the media white point. For example, if you print an image on white paper, on off-white paper, and on blue paper by using the absolute colorimetric rendering intent, the printer adjusts the ink or toner used for each one. The resulting color is technically not same, but the images might look the same because of the way your eyes interpret them in relationship to the color of the paper. The absolute colorimetric rendering intent is typically used for logos. 230 InfoPrint Manager for Windows: Procedures

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photograph with the ICC profile for your camera. Then, when you want to print
that photograph, the color management system converts the color data from the
camera into the PCS. The printer then uses its ICC profile to convert the
photograph data from the PCS into its color space, and prints the photograph as
accurately as it can.
For more information about the ICC, ICC profiles, and the PCS, see the ICC Web
site:
Rendering intents
Rendering intents indicate what you want a printer to do with colors that are
outside its gamut.
ICC profiles support these rendering intents:
v
Perceptual
If an image includes any colors that are out-of-gamut for the printer, the printer
adjusts all the colors in the image, even those that are already in the gamut of
the printer, so they are all in-gamut and maintain their color relationships to
each other. The result is an image that is visually pleasing, but is not
colorimetrically accurate. The perceptual rendering intent is useful for general
reproduction of images, particularly photographs.
v
Saturation
If a print job includes colors that are out-of-gamut for the printer, the printer
replaces the out-of-gamut color with the nearest color in the gamut. It also
adjusts the in-gamut colors so that they are more vivid. Saturation is the least
used rendering intent, but it is useful for business graphics, such as images that
contain charts or diagrams.
v
Media-relative colorimetric
If a print job includes colors that are out-of-gamut for the printer, the printer
substitutes the nearest in-gamut color; in-gamut colors are not adjusted. Colors
printed on papers with different media white points might not match visually.
The
media white point
is the color of the paper that the print job is printed on.
For example, if you print an image on white paper, on off-white paper, and on
blue paper by using the media-relative colorimetric rendering intent, the printer
uses the same amount of ink or toner for each one and the resulting color is
technically the same. However, the images might seem different because your
eyes adjust to the color of the background and interpret the color differently.
This rendering intent is typically used for vector graphics.
v
Absolute colorimetric
All colors are mapped by using the same method as the media-relative
colorimetric rendering intent, however, all colors are adjusted for the media
white point. For example, if you print an image on white paper, on off-white
paper, and on blue paper by using the absolute colorimetric rendering intent, the
printer adjusts the ink or toner used for each one. The resulting color is
technically not same, but the images might look the same because of the way
your eyes interpret them in relationship to the color of the paper. The absolute
colorimetric rendering intent is typically used for logos.
230
InfoPrint Manager for Windows: Procedures