Ricoh G-P3 Service Manual page 393

6. Detailed Function Descriptions
The transfer belt contact motor [A] turns the CMY contact cam shaft [B] when the machine starts to make
a color print. The CMY contact cam lifts the belt transfer roller unit for CMY [C] to the transfer belt. Because
of this mechanism, the life of the transfer belt is longer (it is not necessary for the transfer belt to touch the
color PCUs when the machine makes a black and white print).
The transfer belt contact sensor [D] detects if the transfer roller unit for CMY touches the transfer belt. If it
does not touch the transfer belt during color printing, the machine stops and shows SC 442.
Transfer Belt Cleaning
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[A]: Cleaning brush
[B]: Seal
[C]: Transfer belt drive roller
The transfer belt cleaning blade [A] removes remaining toner from the transfer belt to prevent "ghosting"
on the next print. This blade is included in the blade holder. The pressure spring applies pressure to the
center of the blade holder. This blade gets constant pressure because of the pressure spring [F].
The toner collection coil [E] moves the remaining toner to the waste toner bottle from its opening [G].
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[D]: Transfer belt cleaning blade
[E]: Toner collection coil
[F]: Pressure spring