Epson 2200 Service Manual - Page 49

ASF Paper Feeding Mechanism, Drive Transmission Path to ASF Unit, DE Mechanism - printer parts

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EPSON Stylus PHOTO 2100/2200 2.2.3.1 ASF Paper Feeding Mechanism Table 2-9. ASF/Pump Motor Specifications Item Specifications Type Drive method 4-phase, 48-pole PM type stepping motor Bipolar drive/constant-current drive Drive voltage Winding resistance Inductance +42V +/- 5% (voltage applied to driver) 7.0Ω +/- 10% (per phase at 25°C) 10.0mH +/- 20% (1kH 1Vrms) The following table indicates the rotation directions for driving the ASF unit/pump mechanism. Rotation Direction Table 2-10. ASF/Pump Motor Rotation Directions D/E ASF Paper Feed Roller Operation Pump Operation CW *a Pump switching direction Paper return lever setting Pump suction/wiper setting CCW *b ASF switching direction Paper feed Pump releasing Wiper resetting *a: CW (CW is defined as the clockwise direction as viewed from the ASF/ Pump motor pinion) *b: CCW (CCW is defined as the counterclockwise direction as viewed from the ASF/Pump motor pinion) The driving force of the ASF/Pump motor is transmitted to the ASF unit by the Carriage unit operation and DE mechanism switching operation described in the following section. Revision B 2.2.3.2 Drive Transmission Path to ASF Unit 1. The Carriage unit moves to the right end of the Carriage guide shaft to move the DE lock lever to the right end. 2. The ASF/Pump motor rotates in the CCW direction (as viewed from the motor pinion gear side) by the specified number of steps. 3. As the ASF/Pump motor rotates in the CCW direction, the Planetary lever unit in the DE mechanism moves toward the combination gear 12, 22.4. 4. As the Carriage unit moves leftward from the right end of the Carriage guide shaft by the specified number of steps, the DE lock lever fixes the Planetary lever unit. 5. The driving force of the ASF/Pump motor is transmitted in the following path. Motor pinion gear → Planetary lever unit → Combination gear 12, 22.4 → Combination gear 14, 28 → Spur gear 32 (ASF side) The following shows the part names and operation outline of the DE mechanism. Combination gear 14, 28 Combination gear 12, 22.4 Planetary lever unit DE lock lever ASF/Pump motor pinion gear Combination gear 17.19, 25.6 Figure 2-6. DE Mechanism OPERATING PRINCIPLES Printer Mechanism 49

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EPSON Stylus PHOTO 2100/2200
Revision B
OPERATING PRINCIPLES
Printer Mechanism
49
2.2.3.1
ASF Paper Feeding Mechanism
The following table indicates the rotation directions for driving the ASF unit/pump
mechanism.
The driving force of the ASF/Pump motor is transmitted to the ASF unit by the
Carriage unit operation and DE mechanism switching operation described in the
following section.
2.2.3.2
Drive Transmission Path to ASF Unit
1.
The Carriage unit moves to the right end of the Carriage guide shaft to move the
DE lock lever to the right end.
2.
The ASF/Pump motor rotates in the CCW direction (as viewed from the motor
pinion gear side) by the specified number of steps.
3.
As the ASF/Pump motor rotates in the CCW direction, the Planetary lever unit in
the DE mechanism moves toward the combination gear 12, 22.4.
4.
As the Carriage unit moves leftward from the right end of the Carriage guide shaft
by the specified number of steps, the DE lock lever fixes the Planetary lever unit.
5.
The driving force of the ASF/Pump motor is transmitted in the following path.
Motor pinion gear
→
Planetary lever unit
→
Combination gear 12, 22.4
→
Combination gear 14, 28
→
Spur gear 32 (ASF side)
The following shows the part names and operation outline of the DE mechanism.
Figure 2-6. DE Mechanism
Table 2-9. ASF/Pump Motor Specifications
Item
Specifications
Type
4-phase, 48-pole PM type stepping motor
Drive method
Bipolar drive/constant-current drive
Drive voltage
+42V +/- 5% (voltage applied to driver)
Winding resistance
7.0
Ω
+/- 10% (per phase at 25
°
C)
Inductance
10.0mH +/- 20% (1kH 1Vrms)
Table 2-10. ASF/Pump Motor Rotation Directions
Rotation
Direction
D/E
ASF Paper Feed
Roller Operation
Pump Operation
CW
*a
*a:
CW (CW is defined as the clockwise direction as viewed from the ASF/
Pump motor pinion)
Pump switching
direction
Paper return lever
setting
Pump suction/wiper setting
CCW
*b
*b:
CCW (CCW is defined as the counterclockwise direction as viewed from
the ASF/Pump motor pinion)
ASF switching
direction
Paper feed
Pump releasing
Wiper resetting
Combination gear 14, 28
Combination gear
12, 22.4
Planetary lever unit
DE lock lever
Combination gear 17.19, 25.6
ASF/Pump motor
pinion gear