Fusing Unit Drive - Ricoh B230 Service Manual

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Temperature is normally controlled by turning the fusing lamps on and off.

The lubricant roller supplies a small amount of oil to the pressure roller through the

cleaning roller. An oil supply unit is not necessary because the amount of oil supplied

to the pressure roller is small.

6.11.2 FUSING UNIT DRIVE

Belt and Rollers

The fusing/paper exit motor drives the pressure roller [A] and the fusing roller [B] through

the gear train, timing belt and clutch. The heating roller [C] is driven by the pressure with

the fusing belt [D]. The cleaning roller [E] and lubricant roller [F] are driven by the friction

with the pressure roller.

Fusing Clutch

The fusing clutch [G] turns off and cuts the drive power when the fusing unit does not

operate. This mechanism prevents wear on the belt and rollers.

The fusing clutch turns off when images and patterns are created on the transfer

belt during process control and line position adjustment.

Lubricant Mechanism

The lubricant roller [F] contains silicone oil in its material. The lubricant roller applies small

amount of silicone oil to the pressure roller to reduce the friction between the pressure

roller and thermistor.

The cleaning roller [E] cleans the lubricant roller to remove the residual toner stuck to the

lubricant roller.

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