Ricoh A172 - Page 431

FEB#
SDC206 / SDC206E-001
SUBJECT: MAJOR DIFFERENCES VS THE SC106
MAJOR DIFFERENCES
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No. 1 Item Contents
Details
Process Control
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Toner End The toner end detection software
1 Detection ---z; -- ~
A toner end sensor has been
[added t,,:ch:~ke62 i,
2
Latent Image The process control for latent
Control
imaqe control has been modified.
section 2 for details.
See 2.1 in section 2 for details.
3 Toner Density
/VCNT Correction has been
iSee 2.2 in section 2 for details.
Control
modified.
I
I!
e
Around The Drum
IOPC Drum
, 1
2
Drum Charge
Wire
Drum Charge
Wire/Grid
Cleaning
Drum Cleaning
The OPC drum layer material
(Charge Transfer Layer: CTL)
has changed.
The system has been changed
from a double-wire to a
single-wire scorotron.
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Drum charge wire/grid cleaning
has been newly added.
Drum lubrication has been newly
added.
The cleaning brush has been
changed from a looped-bristle
type to a straight-bristle type.
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Optics
1
Exposure Lamp
The number of exposure lamp’s
lighting points has increased
from 7 to 9.
Infra-red Filter The thickness of the infra-red
filter has increased from 0.8 mm
to 1.0 mm.
2nd/3rd Mirrors A heavier stabilizer has been
installed on the 2nd/3rd mirrors.
Reflectors
To reduce ozone and NOx
reaction with the drum (to
prolong the lifetime of the drum).
See 3.1 in section 2 for details.
See 3.2 in section 2 for details.
See 3.4 in section 2 for details.
To apply the lubricant evenly on
the drum. See 3.4 in section 2 for
details.
To decrease white bands on
copies caused by the exposure
lamp’s lighting points.
To achieve better copy quality for
originals containing infra-red
radiance.
(prevents black areas from
becoming reddish)
To decrease scanner banding to
achieve better results for auto
letter/photo separation.
To decrease the possibility of the
exposure glass becoming dirty
with dust particles.
To decrease the temperature
around the optics cavity due to
less power to the exposure lamp.
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