Paper Feed Mechanism - Epson 3800 - Stylus Pro Color Inkjet Printer Service Manual

EPSON Stylus Pro 3800/3800C/3850

2.6.3 Paper Feed Mechanism

The paper feed mechanism mainly consists of a Release mechanism, the PF Motor, and
the feed rollers.
RELEASE MECHANISM
Release mechanism consists of a release unit (including a release motor, release sensor,
and combination gear), paper guide upper assy that presses papers, and paper guide
release shaft that activates the paper guide upper assy.
Rotational drive of the release motor activates the paper guide release shaft through the
combination gear. When the release lever of the paper guide release shaft presses down
the back end of the paper guide upper assy, the paper guide upper assy separates from
the PF roller. When the release motor rotates reversely, the paper guide upper assy
makes contact with the PF roller. The release sensor installed in the release unit and the
light-shielding plate detects the contact condition between the paper guide upper assy
and the PF roller.
OPERATING PRINCIPLES
Combination Gear, 8, 22.986
Light-shielding Plate
Paper Feed Mechanism
Release Motor
Combination Gear, 9.6, 22
Spur Gear, 22
Combination Gear, 8, 22
Combination Gear, 8, 22
Spur Gear, 20.4
Combination Gear, 22, 32.4
Spur Gear, 22.B
Paper Guide Release Shaft
Paper Guide Upper Assy
Figure 2-27. Drive Transmission Path
Revision A
52