Asf (Auto Sheet Feeder) Mechanism - Epson Stylus Color 1520 Service Manual

2.2.4.1 ASF (Auto Sheet Feeder) Mechanism

The PF roller creates torque that is transmitted to the pick up roller in the ASF mechanism via the planetary
gear. The PF motor drive disengage mechanism switches the torque based on the detected position of the
CR unit. The pick up roller shaft has 2 arms on the right and left, which push down the paper support so the
paper surface contacts the pick up roller. The one way clutch rotates the pick up roller to load paper. The
paper feed mechanism feeds the loaded paper and disengages the gear transmission from the planetary
gear.
ASF Mechanism
Pickup Rollers
Arm
Front PE Sensor
Tractor Disengage Gear
PF Motor Pinion Gear
To the tractor
mechanism.
To the ASF
mechanism.
ASF
Transmission Gear
PF Drive Roller
Paper Eject Roller Shaft
Paper Eject Roller Unit
Figure 2-5. Paper Feeding Mechanism
One Way Clutch
Paper
Figure 2-6. ASF Mechanism
PF Motor
Disengage Gear
Paper Eject Roller Shaft
Disengage Gear
PF Roller
Operating Principles
Pump Mechanism
Pinion Gear
PF Motor
ASF transmission Gear
Paper Support
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