Epson AcuLaser C900 - Secondary Transfer Roller Cleaning

EPSON AcuLaser C1900/AcuLaser C900 Revision B
Operating Principles Description of Mechanisms 106
SECONDARY TRANSFER ROLLER PRESSED / SEPARATED
The secondary transfer roller is pressed and separated by turning on and off of the
secondary transfer roller pressure solenoid (SL5) which activates rotation of the cam on the
printer body.
When the secondary transfer roller pressure solenoid (SL5) is turned on, the cam on the
printer body rotates and the secondary transfer roller is separated.
The position of the pressed/separated roller is detected by the transfer roller position
detection sensor (PC7).
SECONDARY TRANSFER ROLLER PRESSING/SEPARATION TIMING
2.4.5.2 Secondary Transfer Roller Cleaning
Inverse bias is output to the secondary transfer roller to remove the residual toner on the
secondary transfer roller.
The removed residual toner is placed on the transfer belt and then collected with the
cleaning blade.
OPERATION TIMING
 A predetermined time after preliminary rotation
 After the paper has passed the secondary transfer roller, if a size error
occurred
 Before secondary transfer ATVC
Pressing Before the paper enters under the secondary transfer roller
Separation
After the tail end of the paper has passed the secondary transfer roller
Secondary Transfer Roller
Drive Roller
Secondary
Transfer Roller
Pressure Lever
Spring
Cam
Transfer Roller
Position Detection
Sensor
Separated Pressed
Secondary Transfer Roller Pressure Solenoid (SL5)