Konica Minolta bizhub PRO C500 - Manual (Page 12)

12
Glossary
Term Description
CMYK The color material's three primary colors (C=Cyan (bluish), M=Magenta (reddish) and Y=Yellow) and K
(Black).
Color printers and copiers overlap CMYK inks or toners and produce various colors.
If there is no CMYK at all, the image becomes white (color of paper). If CMYK all colors are overlapped
at 100% each, the image becomes black called Rich Black. (Black created with the monochrome black
color is called Pure Black.)
To create CMYK image data, a special application for image creating, such as Adobe Illustrator and
Adobe Photoshop is necessary.
Color gamut Generally, the reproducible color range (type and limit) differs between monitor and copier.
This is because monitor is a device that reproduces colors using RGB lights but copier is a device that
reproduces colors using CMYK inks/toners.
The color range (type and limit) that each device can reproduce is called Color gamut.
Profile Data file described with the color characteristics of a device, like monitor or copier.
The color characteristics include color gamut and white point information.
[Monitor's color gamut] differs depending on the monitor manufacturers and models. It is essential
information for the controller to correctly understand the user-specified color.
Rendering intent Color gamut is different between RGB and CMYK.
Generally, CMYK color gamut is smaller than RGB. Therefore, colors that cannot be reproduced in
CMYK must be substituted with different colors.
This substitution process during conversion from RGB to CMYK is called Rendering intent.
RGB The light's three primary colors (R=Red, G=Green, B=Blue).
TV and computer monitors overlap RGB lights and produce various colors.
If there is no light at all, the image becomes black. If RGB all colors are overlapped at 100% each, the
image becomes white.
Most of the image data created using general applications such as Microsoft Office applications (MS-
Word, MS-Excel) is RGB.
Spot Color Colors assigned with unique color numbers (for example, C300).
This print controller is build-in with the Pantone spot color data.
When use of the Pantone spot color is set on image creation application software, this controller outputs
the specified color more precisely based on the built-in data.
White point A component that affects colors.
When white (RGB 100%) is displayed on two monitors, it may look reddish white on one monitor and
bluish white on other monitor.
This difference is caused by the white point difference between the two monitors.
Changing the white point affects overall color (bluish, reddish).