OKIDATA OL400e Series, Руководство по обслуживанию

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Service Manual for OL400e/OL410e/OL410e-PS
Chapter 2 Principles of Operation
2.4.10 Printing
Refer to the Printing Process Diagram.
Printing is accomplished as follows.
Approximately - 1.3 Kvdc is supplied to the charge roller. This causes the drum to charge
to approximately - 750 vdc.
The LED head is turned ON by the printer control board in accordance with signals from the
main control board. This causes a latent electrostatic image to be formed on the surface of
the drum.
Through the development process, a toner image replaces the electrostatic image.
A + 1 Kvdc charge is applied to the transfer roller. This causes the toner image to be transferred
to the receive paper.
Heat and pressure cause the toner image to become fused to the receive paper. The 150
degree Centigrade fusing temperature is attained by turning a 400 watt halogen lamp ON.
The fusing temperature is controlled by a thermistor. In the event of a thermistor failure, a
temperature fuse will OPEN, turning off the quartz lamp, and preventing equipment damage.
The residual toner is removed from the drum.