Epson 3800 - Stylus Pro Color Inkjet Printer, Service Manual

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EPSON Stylus Pro 3800/3800C/3850 Revision A
OPERATING PRINCIPLES Paper Feed Mechanism 50
4. Pressing the hopper
The hopper cam on the LD roller shaft presses the hopper and remaining paper on
the tray is moved away from the feeding position.
5. Moving the paper anti-slip tabs upward
The LD roller shaft rotates to actuate the lever on the shaft and move the paper
anti-slip tabs upward. The tabs prevent the paper from slipping into the paper
feeding section.
6. Transporting paper in the printer
Paper fed into the printer is transported by the PF roller.
7. Releasing the back end of paper
When the hopper actuating cam presses the hopper further in synchronization with
the rotation of the LD roller, left and right paper guides that regulate the paper
width are extended releasing the back end of paper.
Figure 2-23. Releasing the Back End of Paper
8. Standing-by
The hopper returns to the stand-by position and ends the paper loading operation.
Figure 2-24. ASF Drive Mechanism
Figure 2-25. ASF Drive Transmission Path
Hopper
Hopper
Actuating
Cam groove
LD Roller Shaft
Paper Holding State Paper Releasing State
Spur Gear,
Shaft, LD
Paper Anti-slip Tab
LD Roller Shaft
LD Roller
ASF Motor
Combination
Gear, 58.22
Hopper
ASF Sensor
Retard Roller
Position Detection Section
ASF Motor
Spur Gear, Shaft, LD
Paper Anti-slip Tab
LD Roller Shaft
Hopper Assy
Combination Gear, 58,22
LD Roller