Epson Stylus 1500, Service Manual

Page: 49 / 185

Auto Sheet Feeder Mechanism
The PF motor torque is transmitted to the ASF pickup rollers via a planetary gear in the disengage
mechanism. The pickup roller shaft has two arms on each side. The arms engage the paper
support to cause the paper surface to contact the pickup rollers. The one-way clutch makes the
rollers rotate in one direction for paper pickup. When not in paper pickup motion, the planetary
gear does not transmit torque to the pickup roller shaft.
After picking up paper, the planetary gear is released from the ASF mechanism. The torque of the
PF motor is then transmitted to the paper feed mechanism.
To Tractor
To A SF
AS F Tra ns mis sion Ge ar
PF Roller
Paper Eject Roller
Eject Roller Unit
Pu mp Un it
Re le ase Ge ar
Dise ng age Ge ar
PF Motor
PF Motor Pinion Gear
Eject Paper Shaft
Figure 2-6. Paper Feed Mechanism
Pickup Ro ller
Paper Support
PE Sensor
PF Rolle r
ASF Tran smission Gear
Diseng age Ge ar
Pinion Gea r
PF Motor
Pa p e r
One Way Clutch
AS F Me chan ism
Figure 2-7. ASF Mechanism
Operating Principles
2-8 Rev. A