Specifications

◆ Control Processing Timing
➀
AIDC Sensor variation adjustment
➃
Optimum Exposure Lamp
voltage setting (correction)
➁
AIDC Sensor contamination correction
➂
T/C control level setting (correction)
➄
AE Sensor gain adjustment
O: Performed
Item Timing
➀ ➁➂➃ ➄
Initial
Setting
At the initial setup, or when the first F5
operation is run after the PC Drum has
been replaced.
O OOO O
The second or subsequent F5 operation
is run when "Exp. Lamp Manual Adj."
setting of the Tech. Rep. Choice has
been changed or the Exposure Lamp
cleaned.
O OOO O
Correction
When
Power is
Turned
ON
The Power Switch is turned ON
(one-shot correction).
If further
correction
is
necessary
after
➁
O
*1
O
If LA1
intensity
has
been
varied
by
➃
Regular
Correction
Each time the copier has made 200
copies after the Power Switch has been
turned ON.
If further
correction
is
necessary
after
➁
O
O
*2
O
*3
If LA1
intensity
has
been
varied
by
➃
*1: This corresponds to the first regular correction session in which a
solid-black pattern is produced to read the ID. The T/C control level is
not changed, however, even if the ID is outside the good range.
*2: The T/C control level is changed only when the level is considered to
need two consecutive 0.5% increases or decreases.
*3: The processing is not performed if the ID is outside the specified range
(3.85 to 4.45V) in
➂
.
7-4. Control for Correction for a Deteriorated PC Drum and a Faulty
AIDC Sensor
The PC Drum deteriorates with age, resulting in its surface potential being
reduced. To compensate for it, the following controls are provided according
to the period of time over which the PC Drum has turned. When the copier
detects a faulty AIDC Sensor [if adjustments of
➀
and
➁
are not possible], it
drops the AIDC Sensor control and, instead, provides the following controls
for stabilized image.
(1) The Exposure Lamp voltage setting is increased by 1V each time the
cumulative time over which the PC Drum has turned exceeds 12 hours
(720 minutes).
(2) The grid voltage (V
G
) is increased by 15V each time the cumulative
time over which the PC Drum has turned exceeds 36 hours (2,160
minutes).
M-24