1. PCR structure: HP series charging roller is composed of iron shaft, sponge and casing, and Samsung series is composed of iron shaft and rubber.

2.Working principle: The PCR charges the surface of the OPC with a uniform charge.

3.Note:The PCR cannot be pressed against each other due to their structural reasons and will be deformed;

The surface of the PCR cannot be wiped with a solvent;Failure to use a hard object to collide during operation (eg, tweezers) will damage the surface of the PCR.