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June 30, 1998
V
Update
REF
The TD sensor reference voltage (V
toner in the development unit as follows;
New V
= Current V
REF
∆V
is determined using the following Vsp/Vsg and V
REF
A =< –0.2
V
– V
REF
T
–0.2< A =<–0.1
(A)
:
:
0.2 < A
V
: TD Sensor Output
T
When SC350 (ID Sensor Abnormal) is generated, V
machine uses the current value.
V
is updated during process control initial setting. It is also updated if both of
REF
the following conditions exist:
• 50 or more copies have been made since the last V
• The copy job is finished
) is updated to stabilize the concentration of
REF
+ ∆V
REF
REF
Vsp/Vsg (B)
B < 0.055
0.055 < B =< 0.07
0.25
0.25
:
:
0
2-53
V
table
REF–
T
⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅
0.22
:
0.22
:
:
:
:
:
0.05
:
is not updated. The
REF
update
REF
DRUM UNIT
0.15 < B
–0.03
–0.05
:
:
–0.25
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