Controlling The Aligning The Sheets - Canon J1 Service Manual

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Technology > Saddle Stitcher Unit > Controlling the Aligning the Sheets
2) The solenoid turn OFF when the paper butts against the paper positioning plate.
The feed motor continues to rotate.
M1
Paper positioning plate
paper sensor(PI8)
3) The solenoid turns ON when the next sheet arrives, and the feed plate comes into contact.
M1
Paper positioning plate
paper sensor(PI8)
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Technology > Saddle Stitcher Unit > Controlling the Aligning the Sheets
The alignment motor (M5) 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 (PI5).
The following briefly describes what takes place when the saddle stitching mechanism
OFF
SL4
operates on two sheets.
1) When the first sheet has been output, the alignment plates butt against the left and right
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ON
SL4
2) The alignment plates move away from the edges of the stack over a short distance and
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Controlling the Aligning the Sheets

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.
Sheets
Alignment
Alignment
plate
plate
Alignment plate home
Paper positioning
position sensor(PI5)
plate
then butt against the edges once again (Second alignment).
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F-2-43
F-2-44
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