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 [A] turns the CMY contact cam shaft [B] when the machine starts to make a color print. The CMY contact cams slide the right and left sliders [C] 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 [D] detects if the image transfer rollers for each OPC drum (CMY) touch the transfer belt.

If one of the following problems with transfer belt contact occur, SC445 is displayed.

• Home position shift abnormality (ITB contact sensor does not detect the home position at the time of power on / cover opening and shutting)
• Spaced position shift abnormality (ITB contact sensor does not detect that the transfer belt moves away from the color OPC drums when the machine makes a black and white print)
• Contact position shift abnormality (ITB contact sensor does not detect that the transfer belt touches the color OPC drums when the machine makes a color print)