New Compatible PCR

 

The Primary Charge Roller (PCR) has two functions. The first is to apply a DC signal to the surface of the drum so that the laser from the printer can write to it. The second is where an AC signal is applied to the drum to help erase any residual charges left on the drum surface after printing. Because of this dual role, there are some very severe failures from them. Most of failures will show up more in the winter where the humidity is low than in the summer when it is high.