Paper Loading Mechanism - Epson 2200 - Stylus Photo Color Inkjet Printer Service Manual

EPSON Stylus PHOTO 2100/2200

2.2.4 Paper Loading Mechanism

The Paper loading mechanism is designed to transfer the paper fed from the ASF, Roll
paper guide or Board paper guide or the CD-R fed from the CD-R tray according to the
print data.
2.2.4.1 Paper Loading Mechanism
The Paper loading mechanism consists of the PF roller and Paper eject rollers to
transfer paper. The Paper feeding (PF) motor is a DC motor. The following table
indicates the PF motor specifications.
Table 2-11. PF Motor Specifications
Item
Type
Drive voltage
Winding resistance
Inductance
Drive method
Drive IC
Like the Stylus PHOTO 2000P, this product uses closed loop control by means of the
DC motor and rotary encoder to improve paper loading accuracy. The rotary encoder is
installed on the left end of the roller shaft to control the paper loading amount.
The driving force of the PF motor is transmitted to the PF roller and Paper eject rollers
in the following paths.
!
PF roller drive transmission path
PF motor/pinion gear → Spur gear 76 → PF roller shaft
!
Paper eject roller drive transmission path
PF motor/pinion gear → Spur gear 76 → Combination gear 17, 24.5 →
Spur gear 43 → Paper eject roller shaft A
OPERATING PRINCIPLES
Specifications
DC motor with brushes
+42V +/- 5% (voltage applied to driver)
23.0Ω +/- 25%
24.0m +/- 25%
PWM
A3958
The following shows the part names and outline of the PF roller driving force
transmission path. With the driving force transmitted in above paths, paper is
transferred in the following path.
PF motor/pinion gear → Spur gear 76 → Combination gear 17, 24.5 → Spur gear 62
→ Paper eject roller shaft B
Spur gear 76
PF motor
pinion gear
Paper eject roller A
Figure 2-9. Paper Loading Mechanism 1
Printer Mechanism
Combination
gear 17, 24.5
Spur gear 62
Spur gear 43
PF roller
Front paper guide
Paper eject roller B
PF motor
Revision B
54