Epson STYLUS CX3500 Service Manual page 61

EPSON Stylus CX3500/CX3600/CX3650/CX4500/CX4600
The PF Motor pinion gear
rotates CCW direction (right
side view), and the drive of
the PF Motor is transmitted
Hopper release cam
to the LD Roller Shaft
through the Clutch lock
tooth and the Clutch gear.
After the LD Roller pushes
down the Paper Back Lever
into the ASF Frame, the
Hopper is released by the
tension force of the
Compression Spring 5.58.
And, a paper is picked up
with the frictional force
between the LD Roller and
the Pad Hopper.
<PF Motor drive transmission path for ASF home position setting>
PF Motor pinion gear (CCW) → Spur Gear 30.8 (CW) →
Spur Gear 32.4 (PF Roller) (CCW) → Spur gear 13.5 (PF Roller) (CCW) →
Combination Gear 21.24 (CW) → Spur Gear 27.2 (CCW) →
Spur Gear 16 (CW) → Change Lever (CW) →
Combination Gear 27.2, 19.2 (CCW) → Spur gear 36.8 (CW)
* Above transmission pass = seen from the right side of the printer
OPERATING PRINCIPLES
Step 3
Hopper & Paper Back Lever condition
1
3
Compression
Spring 5.58
2
Gear rotation direction (Right side view)
Hopper release cam
LD Roller Shaft
Figure 2-8. ASF paper loading sequence (Step 3, 4)
Hopper & Paper Back Lever condition
1
Paper Back Lever
2
Gear rotation direction (Right side view)
<PF Motor drive transmission path for ASF home position setting>
PF Motor pinion gear (CCW) → Spur Gear 30.8 (CW) →
Spur Gear 32.4 (PF Roller) (CCW) → Spur gear 13.5 (PF Roller) (CCW) →
Combination Gear 21.24 (CW) → Spur Gear 27.2 (CCW) →
Spur Gear 16 (CW) → Change Lever (CW) →
Combination Gear 27.2, 19.2 (CCW) → Spur gear 36.8 (CW)
* Above transmission pass = seen from the right side of the printer
Printer Mechanism
Step 4
While the LD Roller rotates
CCW direction (right side
view) continuously, the top of
a paper is loaded to the PF
Roller. In this rotation, the
Hopper returns to the open
position and the Paper Back
3
Lever is pushed up by the
cam of the LD Roller. In this
ASF Frame
time, this lever 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.
Revision A
61