Lexmark C510 Service Manual - Page 60
First transfer (drum) process, Transfer belt, Aluminum drum tube
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5021-0XX First transfer (drum) process The first transfer process consists of toner images on the OPC belt being transferred to the transfer belt. The transfer belt is composed of a special rubber. See "Printer theory of operation" on page 1-19 for transfer belt location. 1. After the development process, the OPC belt rotates making contact and synchronizing with the transfer belt and the aluminum drum. Transfer belt Aluminum drum tube Aluminum drum tube Film (transfer belt) 2. The OPC belt has been biased to -CBV(V) potential. The potential of the transfer belt and drum is nearly GND. 3. Toner on the OPC belt is moved to the transfer belt. This occurs because of the difference of potential between the OPC belt and the transfer belt. Toner that has been developed, in each color, is moved from the OPC belt to the transfer belt and the two color toner image is overlapped on the transfer belt. 1-34 Service Manual