Ricoh A156 - Process Control and Sensor Detection Timing

1.6 SUMMARY
1.6.1 Process Control and Sensor Detection Timing
A summary of process control and correction timing is shown below.
Correction
Electrical
Component
Sensor
Output Used
Correction Timing
Corrected
Value
Forced
Correction
Automatic
Correction
Manual ID
correction
Operation
panel
——
Every copy
in manual ID
mode
•
Lamp
voltage
•
Dev. bias
Reproduction
ratio
correction
Operation
panel
——
Every copy
in
reduce/enlarge
mode
Development
bias
ADS
correction
ADS sensor
V
ADS
(pattern)
V
ADS
(original)
—
•
ADS Mode:
Once per
original
(ARDF
mode), or
once when
the Start
key is
pressed
(Platen
mode)
Development
bias
New drum,
ADS sensor,
or exposure
lamp
Every 1000
copies
•
V
ADS
(pattern)
is
stored
ID
correction
and
Toner
density
control
ID sensor V
SG
New drum or
ID sensor
replacement
At the start of
each copy job
•
Dev. bias
V
SP
About every
10 copies
•
Toner
supply
clutch ON
time
TD sensor V
T
When the
developer is
changed
Every copy
V
R
correction
ID sensor V
RP
, V
RG
New drum or
ID sensor
replacement
After every
1000 copies
•
Drum
charge
roller
voltage
•
Dev. bias
V
L
correction
ID sensor V
LP
, V
LG
New drum or
exp. lamp
Lamp voltage
T/H
correction
•
Drum
charge
roller
thermistor
T:
(temperature)
H:
(drum
rotation time)
H is reset at
the drum
initial setting
Every copy
Drum charge
roller voltage
•
RAM Board
Detailed
Descriptions
STM 2-27 A156/A160/A162