Charging device for charging charged body in non-contact state
AssigneeNEC Corporation
InventorChiseki Yamaguchi
Life of this patent
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Abstract
A low-cost non-contact type charging device having excellent uniform charging performance and long stable charging characteristic includes an insulating support body having an insulating surface, first electrodes, to which a first voltage is applied, and second electrodes, to which a second voltage is applied. The first electrodes and the second electrodes, isolated from each other, are alternately formed, in non-parallel to a relative moving direction between a charging member and a charged body. Further, the first electrodes and the second electrodes are provided at respective positions in a width in the relative moving direction of the charging member, and moved close to the charged body in a non-contact state.
Claims18
A charging device which charges a charged member, comprising:
- a charging member including first electrodes and second electrodes which are isolated from each other and provided alternately, said first and second electrodes being positioned close to said charged member in non-contact state;
- a first voltage supplying means for supplying a first voltage to said first electrodes;
- and
- a second voltage supplying means for supplying a second voltage to said second electrodes, said first voltage being larger than said second voltage.
A device for charging a workpiece, comprising:
- a charging member including first electrodes and second electrodes provided alternately along a line perpendicular to a relative moving direction of said charging member and said workpiece, and positioned adjacent said workpiece in a non-contact state;
- and
- a voltage supply for supplying a first voltage to said first electrodes, and for supplying a second voltage to said second electrodes, said first and second voltages having different values.
Dependencies are inferred from the claim text.