G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 3/12 (2006.01) G03G 15/00 (2006.01) G03G 15/02 (2006.01) G03G 21/18 (2006.01)
Patent
CA 2252165
An excellent image forming state is secured constantly regardless of the history of an image forming unit installed. When a new drum cartridge is installed in a copying machine during a standby pending operation of a copy switch on a control panel, CPU reads the number of rotations of a photoreceptor drum from a memory of the drum cartridge, and updates a count of a counter C with the number of rotations read. When the copy switch is operated, CPU derives a grid voltage corresponding to the count of counter C from a relationship between the number of rotations of photoreceptor drum and the grid voltage of the electrostatic charger pre-stored in ROM, executes an image forming process by setting the grid voltage derived from a high-voltage source, and adds the number of rotations of photoreceptor drum made in the current image forming process to the count of counter C.
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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