Pressure Roller; Cleaning Mechanism - Ricoh A193 Service Manual

IMAGE FUSING

7.4 PRESSURE ROLLER

[B]
[A]
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The pressure roller is made of silicone rubber with teflon tube coating. The
pressure spring [A] constantly applies pressure between the hot roller and the
pressure roller.
The pressure roller can be changed by adjusting the position of the pressure
springs. The middle position [B] is the normal setting. The upper position
increases the spring pressure and this prevents insufficient fusing.

7.5 CLEANING MECHANISM

[B]
[A]
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The cleaning roller [A] is always in contact with the pressure roller [B]. It
collects toner and paper dust adhering to the surface of the pressure roller.
This is because the cleaning roller is made of metal and collects adhering
matter more easily than the pressure roller (which has a teflon coating).
SM 2-61 (A193)