Ricoh G184, Service Manual

Page: 242 / 300

Image Transfer
G165/G166/G167/G181/G183/G184 6-34 SM
6.6.3 TRANSFER BELT CONTACT
The transfer belt does not touch the color OPC drums (cyan, magenta and yellow) when
the machine makes a black and white print.
The transfer belt contact motor [B] turns the CMY contact cam shaft [C] when the machine
starts to make a color print. The CMY contact cams slide the right and left sliders [D] and
these sliders lift the belt transfer rollers for each OPC drum (CMY) 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 OPC drums when the machine makes a black and white
print). However, if the customer selects "Off" with the "ACS" setting, the four OPC drums
always touch the image transfer belt.
The ITB (image transfer belt) contact sensor [E] detects if the image transfer rollers for
each OPC drum (CMY) touch the transfer belt. If they do not touch the transfer belt during
color printing, the machine stops and shows SC 445, 446, or 447.
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA