1St Transfer Roller Voltage On/Off Control; 2Nd Transfer Roller Pressure/Retraction Mechanism - Konica Minolta magicolor 2480MF Service Manual

13. Image Transfer Section
13.3.2

1st Transfer Roller voltage ON/OFF control

Image write start position for
a paper size greater than A4
Belt Positioning Sensor (PC4)
/TOD (Image Write Start signal)
Rack Motor (M2)
1st Transfer output
13.3.3

2nd Transfer Roller pressure/retraction mechanism

• In color printing, the toner image of each color of toner is transferred to the Transfer Belt
(thus a total of four times to cover the four colors of toner). Pressure/retraction control
with respect to the Transfer Belt is therefore provided for the 2nd Transfer Roller.
• In the standby state, the 2nd Transfer Roller is in a position retracted from the Transfer
Belt.
A. Pressure/retraction operation
• The pressure/retraction operation is performed by the Main Motor (M1), Pressure/
Retraction Solenoid /2nd Image Transfer (SD4), and Pressure/Retraction Clutch.
• When the Pressure/Retraction Solenoid /2nd Image Transfer (SD4) is energized, drive
from the Main Motor (M1) is transmitted to the Pressure/Retraction Clutch.
Pressure/Retraction Clutch
42
Theory of Operation Ver. 1.0 Nov. 2005
Transfer Belt
Main Motor
2nd Transfer Roller
Pressure/Retraction Clutch
Image write start position for
a paper size of A4 or smaller
2nd Transfer Assy
Pressure/Retraction Solenoid /
2nd Image Transfer
4139to2079e0
4139to2103e0