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Ricoh A172 - Page 432

Ricoh A172
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FEB#
SDC206
/
SDC206E-001
SUBJECT: MAJOR DIFFERENCES VS THE SC106
l;g~ces~~ng
-
~
Color Correction
2
1
The RGB filter coefficient for
each copy mode (letter/photo)
hasbeenchanged.
New matrixes and masking
coefficients have been added to
match the new copy modes.
The image separation IC has
Image
3 Separation
IC
been changed.
___-.-
I
T
To improve gradation and
reproduction quality.
See 4.4 in section 2 for details.
To reduce photo/letter image
separation errors in auto detect
mode.
Laser Exposure
~
Drum Mirror
1
i
A heavier stabilizer has been
To reduce the occurrence of
installed on the Drum mirrors.
I,
banding on copies.
DeveloDment
I
Development
Sleeve Roller
The sleeve rollers have been
changed to a sand-blast type.
Toner Tank
-
____----
bner
Tank
A toner end sensor has been
‘added for each color.
c
To eliminate the 1.25 mm
horizontal lines in halftone image
areas caused by the grooves on
the sleeve roller.
t
---A
The green lever has been
1
mechanism has been added.
‘When
the tank is pulled out, it is
~
disconnected electrically from the
main body.
2---
-
See 6.2 in section 2 for details.
Transfer Belt
See 6.2 in section 2 for details.
See 6.2 in section 2 for details
Transfer Belt
The number of threshold levels
/See
7.1 in section 2 for details.
Bias
that decide transfer belt bias
1 1
depending on environmental
conditions has changed from 2 to
14.
Transfer Belt
The belt lubricant mechanism
prevent partial blanking of
Cleaning
has changed to apply lubricant
lines (due to incomplete toner
2
1~
directly to the transfer belt.
transfer) from appearing on
I/
---I__---
2 for details.
_-----
3

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