Image Processing Path - Ricoh A230 Service Manual

Image processing path

Scanning
Copy Mode Input
correct.
Binary Picture
Processing
Auto
Letter
Shading
Auto
Letter/Photo
Shading
Auto
Photo
Shading
Grayscale Processing
Auto
Letter
Shading
Auto
Letter/Photo
Shading
Auto
Photo
Shading
Auto
Generation
Shading
Low Density Auto
Original Shading
Photo mode: MTF can be used instead of smoothing (SP 4-904-3).
Background erase and independent dot erase can also be used in other modes
than indicated above, depending on SP mode settings. The above diagram shows
the default condition of the machine.
A230/A231/A232
Image
Processing
Background Filtering
erase
Background/
Independent MTF
Dot Erase
MTF
Smoo-
thing
Background/
Independent MTF
Dot Erase
MTF
Smoo-
thing
Background/
Independent MTF
Dot Erase
MTF
2-9
IMAGE PROCESSING
Printing
Magnifi- ID
cation control
γ Corre-
Magnifi-
cation ction
γ Corre-
Magnifi-
cation ction
γ Corre-
Magnifi-
cation ction
γ Corre-
Magnifi-
cation ction
γ Corre-
Magnifi-
cation ction
γ Corre-
Magnifi-
cation ction
γ Corre-
Magnifi-
cation ction
γ Corre-
Magnifi-
cation ction
Grada-
tion
Binary
Picture
Processing
Error
diffusion
8 x 8
Dithering
Grayscale
Error
diffusion
6 x 6
Dithering
Grayscale/
Line width
correction
Grayscale
A231D533.WMF
SM