Read Sharp AR-CF1 (serv.man11) Service Manual online
3-23
CHAPTER 3 SADDLE STITCH UNIT BASIC OPERATION
D.
Aligning the Sheets
The alignment motor (M5S) drives the alignment plates each time a sheet is output, putting both
left and right edges of the sheet in order. The alignment plate motor is a 4-phase stepping motor. The
position of the alignment plate is identified in reference to the number of motor pulses from the
alignment plate home position sensor (PI5S).
position of the alignment plate is identified in reference to the number of motor pulses from the
alignment plate home position sensor (PI5S).
The following briefly describes what takes place when the saddle stitching mechanism operates
on two sheets.
1) When the first sheet has been output, the alignment plates butt against the left and right edges of
the stack (first alignment). The alignment plates leave the home position in advance and remain
in wait at points 10 mm from the edges of the stack.
in wait at points 10 mm from the edges of the stack.
Sheets
Paper positioning
plate
plate
Alignment
plate
plate
Alignment
plate
Alignment plate
home position sensor
(PI5S)
home position sensor
(PI5S)
Figure 3-309
2) The alignment plates move away from the edges of the stack over a short distance and then butt
against the edges once again (Second alignment).
Figure 3-310
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