General Description; Print Cartridge; Recording Paper; Exit Roller - Sharp UX-B800A Service Manual

3.5. Documents requiring use of document carrier
1) Documents smaller than 148mm (W) x 140mm (L).
2) Documents thinner than the thickness of 0.06mm.
3) Documents containing creases, folds, or curls, especially those
whose surface is curled (maximum allowable curl is 5mm).
4) Documents containing tears.
5) Carbon-backed documents. (Insert a white sheet of paper between
the carbon back and the document carrier to avoid transfer of car-
bon to the carrier.)
6) Documents containing an easily separable writing material (e.g.,
those written with a lead pencil).
7) Transparent documents.
8) Folded or glued documents.
Document in document carrier should be inserted manually into the
feeder.
4. Document release

4.1. General description

To correct a jammed document or to clean the document running sur-
face, pull the insertion side of document center of the operation panel.
To open the upper document guide, the operation panel must be
opened first.
5.1. General view
PICK UP
Feed motor

Exit roller

PU roller
PU roller shaft
Planet gear
Reduction gear
Paper feed roller

Print cartridge

Star wheel

Recording paper

5. Recording block
1) The PU ROLLER is rotated by the DC motor to feed the recording
paper. The SEPARATE RUBBER feeds one by one from the top
paper.
2) The recording paper contacts the P-IN SENSOR.
3) The PAPER FEED ROLLER rotates in the reverse direction of
paper feed (refer to the figure of PU ROLLER). The tip of recording
paper is set parallel to the PAPER FEED ROLLER when it reaches
to the PAPER FEED ROLLER and the PRESS ROLLER after
through the PU ROLLER.
4) Then the PAPER FEED ROLLER rotates in the paper feed direc-
tion to feed the recording paper downwards. (refer to the figure of
PAPER FEED)
5) The CARTRIDGE prints the recording paper, which is then ejected
by the EXIT ROLLER and STAR WHEEL.
PAPER FEED
Feed motor
Paper feed roller
Exit roller
PU roller
P-IN sensor
Press roller
Paper feed roller
Exit roller
Fig. 5
3 – 2
UX-B800A
PU roller (No rotate)
PU roller shaft
Planet gear
Reduction gear
Separate rubber
Separate plate