1St Image Transfer Roller Mechanism - Develop QC 2235 Plus Service Manual

Transfer Corona section
10.3.2

1st Image Transfer Roller mechanism

• The machine is provided with a mechanism that presses the 1st Image Transfer Rollers
up against the inside of the Transfer Belt during the 1st image transfer stage. The 1st
Image Transfer Pressure/Retraction Motor (M11) provides the drive for this operation.
• The 1st Image Transfer Retraction Position Sensor detects the 1st Image Transfer Roller
at its retracted position.
• The pressure position is determined through pulse control.
A. Pressure/retraction operation
• Pressure operation
1. Drive from the 1st Image Transfer Pressure/Retraction Motor is transmitted through a
gear train to the drive gear.
2. Rotation of the drive gear turns the pressure cam, which allows the Sliding Plate to
move.
3. As the Sliding Plate moves, the spring is released. This lowers the 1st Image Transfer
Roller and the roller presses against the Transfer Belt.
• Retraction operation
1. When the drive gear turns backward, the pressure cam also turns backward, pushing
to move the Sliding Plate.
2. As the Sliding Plate moves, the Pressure Lever is then pressed to raise the 1st Image
Transfer Roller, allowing the roller to leave the Transfer Belt.
1st Image Transfer Pressure/
Retraction Motor (M11)
When Retracted
1st Image Transfer Roller
• Operation timing
Main Motor (M1)
1st Image Transfer Pressure/
Retraction Motor (M11)
1st Image Transfer Retraction
Position Sensor (PC12)
QC 2235plus Theory of Operation Ver.1.0 Feb. 2004
Spring
4036ma2021c1
Start Key ON Paper Moves Past 2nd Image Transfer Roller
2-36
Cam
4036ma2159c0
When Pressed
4036ma2022c1
4036ma2160c0