Plain Paper; Heavy Paper; When Printing Is Started And The Paper Type Is Switched; When The Quality Priority Mode Is Specified - Canon imageRUNNER ADVANCE 8105 Series Service Manual

2
Technology > Fixing > Controls > Down sequence control
●
Control description
This control has the 3 types of down sequences according to the execution timing.
1) In the case of decrease in fixing temperature (during printing)
When the fixing temperature drops during the job, the productivity is dropped or the job is
stopped to prevent fixing failure.
<

Plain paper

>
In case of plain paper, the fixing temperature of 100% productivity maintains, so the down
sequence does not start.
MEMO:
In case of the default print temperature, 100% productivity is maintained.
When the print temperature is reduced by the service mode, the down sequence may
be started according to the use environment.
<Heavy paper>
Right after the startup (including restoration from the sleep mode), a whole Fixing Assembly
is not warm enough, so the down sequence may be started. However, as printing continues
sequentially, the temperature of the Fixing Assembly is increased and reaches to the
temperature of the 100% productivity
Productivity(%)
100%
85%
70%
Stop
50
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Technology > Fixing > Controls > Down sequence control
Reference value
Plain paper

Heavy paper

Sheets
150
F-2-146 F-2-146

2) When printing is started and the paper type is switched

Because fixing temperature differs according to the paper type, switching the paper type
causes downtime.
Up to 60 seconds downtime is expected with this machine (switching from heavy paper to
thin paper). The following shows estimated downtime.
downtime
pattern of paper type
(reference
switching
value)
Plain paper -> Heavy paper 5 sec
Thin paper -> Heavy paper 10 sec
Heavy paper -> Plain paper -
Heavy paper -> Thin paper 60 sec
Bond paper -> Heavy paper -
Bond paper -> Plain paper -
Bond paper -> Thin paper 60 sec
Thin paper -> Bond paper 80 sec
Plain paper -> Bond paper 30 sec
Heavy paper -> Bond paper 10 sec

3) When the quality priority mode is specified

Due to the temperature rising at the edge of the Fixing Roller, image failure may occur
on halftone printing. To prevent image failure, user can enable the following mode from
"Settings/Registration".
Settings/Registration > xxxx > xxxx
With this mode, idle rotation is executed to keep constant temperature on the Fixing Roller
when above the certain level of temperature difference between the center and the edge of
the Fixing Roller is detected. During idle rotation, paper feed is stopped, so the productivity
is reduced.
MEMO:
When the quality priority mode is specified, productivity may be extremely reduced
depending on use conditions (paper size, paper type, and print image). In such a
case, the level of production reduction can be changed by the following service mode.
.
2-113
Remarks
-
-
Switching the temperature control is conducted,
but print operation continues, so downtime does
not occur.
-
Switching the temperature control is conducted,
but print operation continues, so downtime does
not occur.
-
-
-
-
2-113
T-2-63 T-2-63