Epson Scan 2500 service manual Paper Feeding Mechanism Top View

PF motor

Paper Eject Roller Star Wheel Assy.

PF Roller

Gear

73.6

gear side.

Above CCW rotation is mentioned viewing from the PF motor pinion

Combination gear

￿NOTE:

Figure 2-8 shows a paper feeding mechanism block diagram, which includes the parts along the PF motor drive-transmission paths.

To the eject rollers:

PF motor pinion gear (CCW rotation)→ Gear 73.6 → (13.5, 308) → Spur gear (28) → Paper eject rollers

EPSON Stylus Scan 2500

Revision A

Combination	Gear 28
Gear13.5,30.8

Figure 2-8. Paper Feeding Mechanism (Top View)

The printer feeds paper from the ASF (when the PE sensor located near the carriage motor detects paper is loaded) through the paper path and stops feeding when the paper’s leading edge reaches the halfway point of the front paper guide. To correct for any misfeeding, the paper is fed back toward the ASF a predetermined number of steps and then it is fed forward again until it reaches the top-of-form position.

Once the printer starts printing, it advances paper using the PF rollers and subrollers until it reaches the last 14mm of the paper, when it advances the paper using the star wheel gear and paper eject rollers.

Torque sent from the ASF/Pump motor to the ASF unit via the disengage mechanism is used for the following operation.

Operating Principles Printer Mechanism Operation 41