Downward Curl Mode; Heavy Paper Upward Curl Mode - Canon Finisher-T1 Service Manual

ON
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3) Turn on the host machine.
- When this mode item is enabled, the paper surface
detection mechanism is executed for every sheet of
paper (instead of every 5 sheets) and the timing at
which the delivery tray is moved down is advanced so
that the paper will be stacked properly.
- When this mode item has been enabled, changes in
conditions (e.g., the use of paper with little curl) can
prevent proper stacking. In the light of this, be sure to
check the type of paper most frequently used by the
user before enabling this mode item.

4.3.1.3 Downward Curl Mode

a. Outline
Paper tends to curl downward in certain conditions,
preventing normal delivery/stacking. (See the
following figure.)
If such is the case,
1) Turn over the stack of paper inside the paper source
(e.g., cassette). If doing so makes the downward
curling worse than before, turn back over the stack. If
the paper still develops downward curl and, thus, fails
to deposit itself normally, try enabling the downward
curl mode item.
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b. Enabling the Downward Curl Mode
1) Turn off the host machine.
2) Set the bits of SW104 on the finisher controller
PCB as follows:
ON
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3) Turn on the host machine.
- When this mode item is enabled, the machine
changes the speed of its stack delivery roller to ensure
proper stacking.
- When this mode item has been enabled, changes in
conditions (e.g., the use of paper with little curl or
paper with upward curl) can cause improper stacking.
In this regard, it is very important to study the type of
paper that is most often used by the user before
enabling this mode item.
4.3.1.4 Heavy Paper Upward
Curl Mode
a. Outline
Depending on the selected paper handling mode and
the condition of paper*, upward curl can develop and
prevent the machine from stacking the paper properly.
(See the following figure.)
*For instance, heavy paper cover mode and single-
side binding are selected, and the front/back cover is
LDR and 157 g/m2 or more.
Chapter 4
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