Ricoh G081, Service Manual

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CONTROLLER
G081/G092 6-46 SM
PS3 Driver
CMS (Color Management System)
CMS optimizes the color print quality using a color profile based on the
characteristics of the printer. With RPCS, the color profile is applied by the driver.
With PS3 and PCL5c, the color profile is applied in the matching/CRD module on
the controller except when using CMM/ICC/ICM profiles.
CMS is not used when the color profile setting in the printer driver is set to “Off.”
Gray Correction
Gray correction processes gray with K or CMYK toner depending on the driver
settings.
BG/UCR (Black Generation/Under Color Removal)
The RGB data is converted to CMYK data with BG/UCR. During CMYK conversion,
some CMY data is replaced with K data by the BG/UCR algorithm.
Gamma Correction
The printer gamma can be adjusted using a controller SP mode (Gamma Adj.). For
CMYK, their are15 adjustment points between 0 and 100%. The corrected gamma
data is stored in NVRAM.
PS Driver
CIE
to
XYZ
Color
Matching
RGB
XYZ
CIE ABC
CMYK
8 bit
CMM/
ICC/ICM
Profile
Fine
Fine Super
BG/UCR
(RGB
Correction)
RGB
to
XYZ
CMYK
8 bit
XYZ
Gamma
Gray Correction
Toner Limitation
Dither and RIP
CMYK CMYK CMYK
CMYK
1 bit
Vivid
Super Vivid
None
CRD
G081D939.WMFF