12-6.Toner Replenishing Control; 12-7.Toner Supply Hole Covering/Uncovering Mechanism - Minolta Di450 Service Manual

12-6. Toner Replenishing Control
Toner Replenishing Control by ATDC Sensor
The ATDC Sensor samples T/C for each scan motion and the copier compares the reading
with the reference T/C to determine the appropriate amount of toner to be replenished.
Toner Replenishing
Large amount
Small amount
Fixed amount
None
The amount of toner replenished varies according to the paper size (given in the table
are figures for A4).
12-7. Toner Supply Hole Covering/Uncovering Mechanism
The Toner Supply Hole is covered to prevent toner from dropping into the inside of the
copier when the PC Unit is slid out of the copier.
Springs
PC Unit
Conditions
The sensor reading is lower than the refer-
ence T/C ratio [4.5 %] by 0.5 % or more.
The sensor reading is lower than the refer-
ence T/C ratio [4.5 %] by less than 0.5 %
The sensor reading is higher than the refer-
ence T/C ratio [4.5 %] by less than 0.5 %
The sensor reading is higher than the refer-
ence T/C ratio [4.5 %] by 0.5 % or more.
Main Hopper holder
Cover Plate
4002M531AA
M-40
Amount Replenished
Approx. 216 mg
Approx. 101 mg
Approx. 22 mg
Approx. 0 mg
Uncovering the Toner Supply Port
PC Unit is slid in
Covering the Toner Supply Port
PC Unit is slid out
4002M532AA