EPSON Stylus COLOR 480
Revision B
Operating Principles
Overview
37
2.1.5 Paper Loading Mechanism (ASF Unit)
The Paper loading mechanism is positioned at the printer rear. The Paper loading
mechanism loads paper at the ASF unit and feeds paper to the PF roller.
This ASF unit was designed newly for this product and consists of LD roller, Pad
holder (Paper return plate), ASF Frame, Hopper, and so on.
For the major feature of this ASF unit, ASF HP sensor is not used and the single LD
roller is built in the ASF unit.
Drive sent from the PF motor is always transmitted to the ASF unit side. But, the
Change lever and the Clutch mechanism switch ON/OFF the PF motor drive to the LD
roller with the motor rotational direction.
Drive from the PF motor is transmitted to the ASF unit as described below:
o
Switch the PF motor drive to ASF unit side
PF Motor pinion gear rotates CCW direction with a specific steps
→
Combination
Gear 8.4, 21.6 (CW)
→
Combination Gear 11.2, 32.4 (CCW)
→
Change Lever
rotates (CCW)
→
Release the Clutch mechanism lock position
Following Figure 2-8 shows you the switching path for PF motor drive to ASF unit
side.
Figure 2-8. Switch the PF motor drive to ASF unit side
o
Transfer the PF motor drive to LD roller
PF Motor pinion gear rotates CW direction
→
Combination Gear 8.4, 21.6 (CCW)
→
Combination Gear 11.2, 32.4 (CW)
→
Change Lever rotates (CW)
→
Combination Gear 22.4, 32 (CCW)
→
Spur Gear 35.2(CW) (include the clutch
mechanism)
→
LD roller (CW).
Following Figure 2-9 shows the PF motor drive transmission path to the LD roller unit
built in the ASF unit. The LD roller is assembled on the same shaft that the Spur gear
35.2 is assembled.
Figure 2-9. PF motor drive transmission path
When the PF motor torque is switched to the ASF unit side by the clutch mechanism,
the function of the ASF mechanism varies depending on the rotational direction of the
PF motor, as shown in the table below.
Table 2-3. ASF unit function & PF Motor rotational direction
(*1): The PF Motor rotational direction = seen from the right side of the printer.
Right side view
Top View
PF pinion gear
Combination
Gear 8.4, 21.6
Change Lever
Combination
Gear 11.2, 32.4
Combination
Gear 22.4, 32
Spur Gear 35.2
Directions
Corresponding Functions
Clockwise (*1)
• Picks up and loads paper
Counterclockwise (*1)
• Release the DE lever & Clutch mechanism
Right side view
Top View
Change Lever
Spur Gear 35.2
Combination
Gear 22.4, 32
Combination
Gear 11.2, 32.4
PF pinion gear
Combination
Gear 8.4, 21.6
Summary of Contents for STYLUS COLOR 480
Page 1: ...EPSON STYLUSCOLOR480 Color Inkjet Printer SEIJ00002 SERVICE MANUAL ...
Page 9: ...C H A P T E R PRODUCTDESCRIPTION ...
Page 31: ...C H A P T E R OPERATINGPRINCIPLES ...
Page 51: ...C H A P T E R TROUBLESHOOTING ...
Page 67: ...C H A P T E R DISASSEMBLYANDASSEMBLY ...
Page 99: ...C H A P T E R ADJUSTMENT ...
Page 121: ...C H A P T E R MAINTENANCE ...
Page 128: ...C H A P T E R APPENDIX ...
Page 144: ...PSON Stylus COLOR 480 Revision B ppendix Parts List 144 ...
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