Function Of Main Working Parts; Paper Cassette - Epson AcuLaser C8500 Service Manual

EPSON AcuLaser C8500

2.5 Function of Main Working Parts

The main working parts of the printer are explained in correspondence to the
drawings. The parts are divided into the following blocks according to
configuration.
Paper Tray
Paper Feeder
MSI/Paper Transportation
MSI/Paper Transportation
I
Xerographics
II
Xerographics
Development
I
IBT
II
IBT
I
Fusing
II
Fusing
Paper Exit
Frame & Drive
Electrical
Operating Principles
I
II

2.5.1 Paper Cassette

UNIVERSAL CASSETTE
The END GUIDE is a movable guide that moves in the paper conveyance
direction, and aligns the rear edge of the paper. Moving the END GUIDE
moves the position of the SIZE ACTUATOR via the SECTOR GEAR. The
SIZE ACTUATOR is turned ON by pushing in the Paper Size Switch on the
SIZE SWITCH ASSY.
Changing the position of the SIZE ACTUATOR changes the ON/OFF
combination of the 4 Paper Size Switches. The printer detects the paper
size according to the ON/OFF combination.
The REAR GUIDE ASS moves vertically in the paper conveyance
direction, and aligns the sides of the paper.
In order to obtain friction force by pushing on the paper FEED ROLL, the
BOTTOM PLATE ASSY receives push up force by elastic force of the N/F
SPRING. A Magnet that corresponds to the LOW PAPER SENSOR is
attached to the back surface of the BOTTOM PLATE ASSY.
The FRONT SNUBBER is a mechanism for preventing more than one
sheet of paper from being fed at a time. The device utilizes the weight of
the paper, pressing the corner of the paper edge to convey only one sheet
at a time.
Revision C
2-23