Ricoh A172 User Manual

1. MAJOR DIFFERENCES FROM THE
DFC-ALPHA (A109)
No. Item Contents Details
Process Control
1
Toner End
Detection
The toner end detection software
has been eliminated.
A toner end sensor has been
added for each color. See 6.2 in
section 2 for details.
2
Latent Image
Control
The process control for latent
image control has been modified.
See 2.1 in section 2 for details.
3
Toner Density
Control
V
CNT
Correction has been
modified.
See 2.2 in section 2 for details.
Around The Drum
1
OPC Drum The OPC drum layer material
(Charge Transfer Layer: CTL)
has changed.
To reduce ozone and NO
X
reaction with the drum (to
prolong the lifetime of the drum).
2
Drum Charge
Wire
The system has been changed
from a double-wire to a
single-wire scorotron.
See 3.1 in section 2 for details.
3
Drum Charge
Wire/Grid
Cleaning
Drum charge wire/grid cleaning
has been newly added.
See 3.2 in section 2 for details.
4
Drum Cleaning Drum lubrication has been newly
added.
See 3.4 in section 2 for details.
The cleaning brush has been
changed from a looped-bristle
type to a straight-bristle type.
To apply the lubricant evenly on
the drum. See 3.4 in section 2 for
details.
Optics
1
Exposure Lamp The number of exposure lamp’s
lighting points has increased
from 7 to 9.
To decrease white bands on
copies caused by the exposure
lamp’s lighting points.
2
Infra-red Filter The thickness of the infra-red
filter has increased from 0.8 mm
to 1.0 mm.
To achieve better copy quality for
originals containing infra-red
radiance.
(prevents black areas from
becoming reddish)
3
2nd/3rd Mirrors A heavier stabilizer has been
installed on the 2nd/3rd mirrors.
To decrease scanner banding to
achieve better results for auto
letter/photo separation.
4
Exposure Glass A more high-conductivity glass is
used.
To decrease the possibility of the
exposure glass becoming dirty
with dust particles.
5
Reflectors Reflectivity has increased
because of surface
improvements.
To decrease the temperature
around the optics cavity due to
less power to the exposure lamp.
Detailed
Descriptions
SM 2-1 A172/A199

Ricoh A172 Specifications

General

Brand	Ricoh
Model	A172
Category	All in One Printer
Language	English