EPSON Stylus PHOTO 810/820/830

Revision B

The PF motor pinion gear rotates CW direction (right side view), and the drive of the PF motor is transmitted to the LD roller shaft through the Clutch lock tooth and the Clutch gear. After the LD roller pushes down the Paper return plate into the ASF frame, the ASF hopper is released by the tension force of the Compression spring 2.50. And, a paper is picked up with the frictional force between the LD roller and the Pad hopper.

 

Step 3

 

Hopper & Paper return plate condition

 

 

1

 

ASF hopper

3

Compression

spring 2.50

release lever

2

 

 

 

Gear rotation direction (Right side view)

ASF hopper release lever

LD roller shaft

<PF motor driver transmission path for picking up a paper>

PF motor pinion gear (CW) → Spur gear 10.8 (PF roller) (CCW) →

Combination gear 18.28

(CW) → Spur gear 27.2 (CCW) →

Spur gear 25.6 (CW) →

Change lever (CW) →

Combination gear 16.32

(CCW) → Spur gear 35.2 (CW)

* Above transmission pass = seen from the right side of the printer

Step 4

Hopper & Paper return plate condition

1

 

Paper return

 

plate

3

2

 

ASF frame

 

Gear rotation direction (Right side view)

<PF motor driver transmission path for paper loading>

PF motor pinion gear (CW) → Spur gear 10.8 (PF roller) (CCW) →

Combination gear 18.28

(CW) → Spur gear 27.2 (CCW) →

Spur gear 25.6 (CW) →

Change lever (CW) →

Combination gear 16.32

(CCW) → Spur gear 35.2 (CW)

* Above transmission pass = seen from the right side of the printer

While the LD roller rotates CW direction (right side view) continuously, the top of a paper is loaded to the PF roller. In this rotation, the ASF hopper returns to the open position and the Paper return plate is released from the LD roller. In this time, this plate returns papers to the stand-by position in ASF unit for next paper loading operation.

Then, when the rolling LD roller & the Clutch come at the above “Step1” position, the Clutch lever is locked with the Change lever again. In this time, the drive of the PF motor is interrupted and the drive is transmitted only to the PF roller side for the paper feeding sequence.

Figure 2-9. ASF paper loading sequence (Step 3, 4)

Operating Principles

Overview

35