Lexmark C720 Service Manual - Page 52
VRV and -DBVV. A visible image is the result., the development process due to the difference between
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5024-001 2. Variation of the OPC belt potential. a. The OPC belt is biased to -CBV(V). b. The OPC belt surface is evenly charged to -Vo(V) in the charging process. c. During the exposing process, the optical unit emits a laser beam that strikes the OPC belt surface forming an electrostatic image. The electrostatic image is at -VR(V) potential. d. The negatively charged toner is moved to the OPC belt in the development process due to the difference between -VR(V) and -DBV(V). A visible image is the result. e. The negatively charged toner on the OPC belt is moved to the transfer drum because the potential GND of the transfer drum is greater than -VR(V) of the OPC belt. f. The OPC belt is discharged by the erase lamp radiating on the OPC belt. 1-22 Service Manual
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