Canon imageRUNNER ADVANCE 4551i Service Manual page 123

(5)
Related Service Mode
• Setting for down sequence start temperature
COPIER > OPTION > IMG-FIX > EDG-WAIT
■ Down sequence when switching paper size
Purpose
This down sequence prevents temperature rise of non-feeding area: there can be possible fixing offset or wrinkle of the succeeding
paper due to increased temperature of non-feeding area of the preceding paper when continuously making prints or feeding wider
length of paper than the preceding paper.
Starting conditions
If the temperature difference between sub thermistor (front) and main thermistor or between sub thermistor (rear) and main
thermistor exceeds 20 deg C (*1) when switching to the paper which has longer width than the preceding paper.
Operation
Pickup of the succeeding paper and power distribution to the heater are stopped as well to decrease the fixing temperature.
Completion conditions
When the temperature difference between sub thermistor (front) and main thermistor or between sub thermistor (rear) and main
thermistor reaches 20 deg C and less.
*1. It is different according to setting value of the service mode (Productivity priority mode or Productivity priority in rotation collation
mode).
Related Service Mode
• Set productivity priority mode
COPIER > OPTION > IMG-SPD > PSP-PR1
• Set productivity priority in rotation collation mode
COPIER > OPTION > IMG-SPD > PSP-PR4
Normal
(1)
Normal down <1st Step>
(2)
Normal down <2nd Step>
(2)
Normal down <3rd Step>
(2)
Normal down <4th Step>
(3)
Thick paper down
(4)
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2. Technology