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Fan
Overview
Fan layout
No.
Name
Function
Error code
FAN1
Paper edge cooling fan (rear)
Blows air to both ends of the fixing film to cool the sections where paper is not fed when paper narrower than the A4 width (297 mm) is fed.
E806-0001
E805-0002
FAN2
Paper edge cooling fan (front)
E806-0003
E805-0004
FAN3
Exhaust fan (rear)
Cools the fixing unit.
E805-0000
E805-0001
FAN4
Exhaust fan (front)
Cools the fixing unit.
E805-0002
E805-0003
FAN6
Power supply cooling fan
Cools the power supply.
E804-0000
E804-0001
*1:The fan intermittently operates every second.
*2:When the width of the last paper is narrower than the A4 size (297 mm), the fans operate when the difference in temperature between sub thermistors TH1 and TH2 becomes 20 degree or less. When the width of the last paper is wider than the A4 size (297 mm), the fans operate for 10 seconds after completion of printing.
*3:The fan operates at 1/2 speed only when the machine enters the standby mode after running for more than 8 minutes for fixing.
Paper edge cooling fan (rear)/(front) control
Purpose
These fans are used to prevent the sections where paper is not fed from heating excessively when narrow paper (narrower than the A4 size (297 mm)) is fed.
They cool the paper passed through the fixing unit, preventing it from sticking to the surrounding parts during delivery.
Overview
When paper narrower than the A4 width (297 mm) is fed, the air outlet of the paper edge cooling fan (rear)/(front) opens to blow air to both ends of the fixing film, thus cooling the sections where paper is not fed.
When paper wider than the A4 width (297 mm) is fed, the air outlet of the paper edge cooling fan (rear)/(front) closes to cool the paper that has passed through the fixing unit.
Control sequence
1) The shutter motor (M8) is driven and the home position of the edge cooling shutter is detected with the shutter HP sensor (S10).
2) The opening width of the edge cooling shutter is determined according to the paper size.
3) After completion of adjustment of the paper feed temperature for the first sheet, the paper edge cooling fans (rear)/(front)(FAN1/FAN2) start operating intermittently every second.
* The opening width of the shutter is changed, the rotational speed is increased to the full speed, or the fans are stopped according to the difference in temperature between sub thermistors TH1 and TH2.
4) When the width of the last paper is narrower than the A4 size (297 mm), the fans stop when the difference in temperature between sub thermistors TH1 and TH2 becomes 20 degree or more.
When the width of the last paper is wider than the A4 size (297 mm), the fans stop after operating for 10 seconds after completion of printing.