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.
UNINET IMAGING INC. • BROTHER 1240/1650 • ASSEMBLING THE TONER CARTRIDGEUNINET IMAGING INC. • BROTHER 1240/1650 • DISASSEMBLING THE TONER CARTRIDGE
HP P4014, P4015 & P4045 CARTRIDGE REMANUFACTURING INSTRUCTIONS
3232 West El Segundo Blvd., Los Angeles, California 90250 USA • Ph +1 310 280 9620 • Fx +1 310 838 7294 • techsupport@uninetimaging.com • www.uninetimaging.com
© 2008 UniNet Imaging Inc. All Trademark names are property of their respective owners. Product brand names mentioned are intended to show compatibility only. UniNet Imaging does not warrant downloaded information.
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