Paper Output Mechanism; Outline - Sharp AR-FN8 Service Manual

CHAPTER 3 SADDLE STITCHER UNIT BASIC OPERATION
III. PAPER OUTPUT MECHANISM
A.

Outline

The paper output mechanism serves to keep a stack of sheets coming from the finisher in place
for the next steps (stapling, folding).
The paper inlet is equipped with the No.1 flapper and the No.2 flapper, which operate to con-
figure the paper path to suit the size of paper. The paper positioning plate is kept in wait at a
predetermined location to suit the size of paper. The paper positioning plate is driven by the paper
positioning plate motor (M4S), and the position of the plate is identified in reference to the number
of motor pulses coming from the paper positioning plate home position sensor (PI7S). A sheet
moved by the inlet roller is handled by the feed rollers and the crescent roller and held in a prede-
termined position. The feed plate serve to move sheets by coming into contact with or moving away
from sheets as needed.
The alignment plates put the stack into order each time a sheet is output. The alignment plates
are driven by the alignment motor (M5S), whose position is identified in reference to the number of
motor pulses coming from the alignment plate home position sensor (PI5S).
To prevent interference between paper and the paper folding rollers when the paper is being
output, the folding rollers are designed to be covered by a guide plate. The guide plate moves down
before paper is folded so as to expose the paper folding rollers.
The inlet is equipped with the No.1, No.2 and No.3 paper sensors (PI18S, PI19S, PI20S) each
suited to a specific paper size, and the paper positioning plate is equipped with a paper positioning
plate paper sensor (PI8S).
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