Paper Loading/Feeding Mechanism - Epson Stylus CX1500 ME100 Service Manual

EPSON Stylus CX1500/ME100

2.1.4 Paper Loading/Feeding Mechanism

The following stepping motor controls the Paper loading/feeding mechanism on this
printer.
Table 2-2. PF Motor Specifications
Item
Motor type
Drive voltage
Coil Resistance
Inductance
Driving method
Driver IC
Left side view
Spur Gear 60
Spur Gear 60
(EJ Roller)
(PF Roller)
1
PF Motor Pinion Gear
Note: The Clutch Gear is molded on the backside of the Spur Gear 35.2 such as Combination Gear.
OPERATING PRINCIPLES
Description
4-Phase/ 96-Poles PM Stepping motor
+35.9V ± 5% (DRV IC voltage)
6.1Ω ± 10% (per phase at 25 degrees)
8.7mH ± 20% (1kH 1Vrms)
Bi-Polar drive
A6615
PF Roller
1
PF Motor EJ Roller
Figure 2-7. Paper Loading/Feeding Mechanism
The drive of the PF Motor is transmitted to the LD Roller Shaft and the PF Roller
through gears for the Paper loading/feeding mechanism. The Paper loading mechanism
plays a role in loading a paper from the ASF Unit to the PF Roller. And also, the Paper
feeding mechanism plays a role in feeding a paper loaded from the ASF Unit. The
functions of the Paper loading/feeding mechanism varies depending on the rotational
direction of the PF Motor as the table below.
Table 2-3. ASF Unit Function & PF Motor Rotational Direction
*2
Directions
Clockwise
Counterclockwise
*2
: The PF Motor rotation direction = seen from the left side of the printer.
Following shows you the transmission path of the PF Motor drive to the LD Roller, the
PF Roller and the EJ Roller. (The numbers in the following figure show you the order
of transmission path.)
Right side view
HP/PE Sensor
Spur Gear 10.8
(PF Roller)
1
2
Combination
Gear 18.28
Spur Gear 27.2
Overview
Corresponding functions
• Release the Change Lever from the Clutch mechanism
• Pick up and feed a paper
• Set the Change Lever on the Clutch mechanism
Spur Gear
No paper
35.2
6
5
4
3
Combination
PE Detection
Gear 16.32
Lever
Spur Gear 25.6 Low signal
Revision A
Detect a paper
Paper
High signal
35