Paper Feeding Mechanism - Epson Stylus C40UX Service Manual

Stylus C40UX/C40SX/C20UX/C20SX

2.1.4 Paper Feeding Mechanism

The paper feeding mechanism consists of Paper feed motor (PF motor), PF roller,
Paper eject roller, Star wheel roller, and so on. The paper feeding mechanism feeds
paper loaded from ASF using the PF roller and Paper Eject Roller & Star wheel roller.
For this mechanism, the PF motor mentioned in the right Table 2-2 is used on this
product.
The drive of the PF motor is transfer to the PF roller and the Paper Eject Roller as
following Figure 2-8. Following shows you how to transfer the PF motor drive to the
PF roller and the Paper Eject Roller.
PF motor drive transmission path
PF Motor Pinion Gear (CW)
Paper loaded from ASF is advanced by the following roller.
Paper feed roller & Paper guide roller (assembled on the Top Frame)
eject roller & Star wheel roller (assembled on the Paper eject frame).
Operating Principles
Spur Gear 60 (PF roller)(CCW)
Spur Gear 60 (PF roller)(CCW)
Figure 2-8. Paper Feeding Mechanism
Item
Motor type
Drive voltage
Coil Resistance
Inductance
Driving method
Driver IC
Change Lever
PF roller
Spur Gear 10. 8
Spur Gear 18. 28
Paper
Overview
Table 2-2.
PF Motor Specifications
Description
4-Phase/ 48-Pole PM Stepping motor
+42 V +/ - 5% (DRV IC voltage)
10 +/ - 10% (per phase)
10.5 mH +/ - 20%(1kH 1Vrms)
Bi-Polar drive
XC901503FNR2
Spur Gear 35.2
Spur Gear 25.6
Spur Gear 27. 2
Revision B
Combination
Gear 16, 32
30