The staple mode timing chart shows the operation of
each electrical component in the finisher when 1 set of
A4 size copies is made in the staple (1 staple upper) and
RDH modes.
*1
To initiate the home position, the shift tray moves down
then up. Three seconds later, the shift tray moves down
until the stack height sensor 1 (the upper one) turns on
and stops. The tray stops at the position for stapled
copies, which is slightly lower than the home position.
When stapled copies are delivered and the stack height
sensor 1 remains OFF for 3 seconds while copying, the
shift tray is lowered until the sensor turns on. To prevent
malfunction, if the sensor does not turn on within 1
second from when the tray starts lowering, the tray is
stopped.
In the stapling copy mode (unlike the sort copy mode),
the machine cannot detect if the copy stack on the tray
is removed. This is because the stack height sensor 1 is
always ON while in this copy mode. To counter this,
when the shift tray rise mode is selected by turning on
DIP switch 101-1 on the finisher control PCB, the shift
tray slightly moves up just when the stapled copy is
delivered. At this time, if the stack height sensor 1 turns
off, this means that the tray is in the proper position. The
tray moves down soon and returns to the original
position (until the sensor turns on again). If the sensor
remains ON, this means that the tray position is too low.
The tray continuously moves up until the sensor turns off
then moves down until the sensor turns on.
*2
The velocity of paper transportation is increased to
transport copies from the finisher section entrance to the
jogger unit.
*3
The jogger motor repeatedly turns on and off to align
copies in the jogger unit. For details, refer to "2.17.9
Jogger movement".
*4
The shift tray moves up until the stack height sensor 1
turns off. The tray stops at the home position.
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