UNINETIMAGINGHP P4014,INCINC. . •P4015• BROTHER& P40451240/1650CARTRIDGE REMANUFACTURING• • DISASSEMBLINGINSTRUCTIONSTHETHETONERCARTRIDGE
In the first step, the Primary Charge roller (PCR) places a uniform negative DC Bias voltage on the OPC drum surface. The amount of the negative DC Bias placed on the drum is controlled by the printer’s intensity setting. This process is part of the latent Image formation block.
In the second step, (also part of the latent Image formation block), the laser beam is fired onto a rotating mirror (called the scanner). As the mirror rotates, the beam reflects into a set of focusing lens. The beam then strikes the OPC’s surface, which neutralizes the negative charge on the drum and leaves a latent electrostatic image on the drum. The laser unit actually fires 2 beams. The service manual talks about the second bean being used to erase residual charges, but not if it also helps to write the image.
SUMMIT
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