Down Sequence Control - Canon imageRUNNER ADVANCE 6075 Series Service Manual

2
Technology > Fixing > Controls > Down sequence control

■ Down sequence control

● Overview
In the case of great difference between the target temperature and the detected temperature
at the start of printing or during printing, productivity is dropped to prevent fixing failure or
image failure.
● Execution timing
• During printing
• At the start of printing and when the paper type is switched
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>
When the environment temperature is 17 deg C or higher, the fixing temperature of
100% productivity remains, so the down sequence does not start. When the environment
temperature is lower than 17 deg C, it may start down sequence.
NOTE:
When the print temperature is reduced by the service mode although the environment
temperature is 17 deg C or higher, the down sequence may be started.
<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
2-106
Reference value
Plain paper
Heavy paper
Sheets
150
F-2-135
2-106