To be prepared for failure of overheat prevention by thermistor, there are thermostat and thermal cut
off installed parallel to Fusing Lamp’s general grounding cable.
Thermal cut off is a dual safety device, which is installed additionally to prevent overheat when
thermostat does not function.
Thermostat and thermal cut off get operated when Fusing temperature gets overheated to isolate
power applied to Fusing lamp and indicate an error at the same time to stop the machine operation.
The unit that transfers the papers delivered via Fusing unit lastly to get the papers to stacked on bin tray
on the top of the printer and for the models with duplex unit, it also rotates in reverse for duplex unit’s
operation.
As there is no paper full detection sensor that can prevent paper jam by having papers over a certain
height, a paper jam or paper falling may occur when there are papers over certain amount of sheets (150
sheets of base paper and standard environment).
When paper jam occurs and if paper is behind the Fusing unit, open the delivery cover and remove the
jammed paper.
Delivery unit is composed with the following 13 components and rolls of each component are as the
followings.
1) Delivery Frame: Other parts of delivery components are assembled and performs a role as a guide
on paper print side
2) Large Delivery Gear: Delivers power from Fusing gear to no. 3 small delivery gear.
3) Small Delivery Gear: The gear delivering rotation force lastly to the delivery shaft.
4) Forward/Reverse Bracket: The function to control delivery shaft’s rotation by moving position
with solenoid operation
5) Bracket Spring: When there’s no solenoid operation, it locates no. 4 bracket to rotate delivery
shaft to forward direction.
6) Gear Bracket: Fixates large and small delivery gears and forward/reverse bracket.
7) Bracket Fusing screw
8) Delivery Shaft Support: Delivery shaft gets weight from idle roller assemble to laser cover in
lower direction and the support prevent it from dropping.
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