Charging device and image forming apparatus having the same
AssigneeKyocera Mita Corporation
InventorTomoya Hotani
Life of this patent
Estimating the term…
Abstract
A charging device (37) includes a discharge wire (85) to which a charging bias is applied, a box-like shield (84) surrounding the discharge wire (85) and having an opening (86) the body surface, a grid (87) mounted to the opening (86) and applied with a grid voltage, a moving base (94) movable along the discharge wire (85), a drive unit (95) for moving the moving base (94), and a cleaning member (96) mounted on the moving base (94) to clean a surface of the grid (87) facing the discharge wire (85) in accordance with movement of the moving base (94). The cleaning member (96) is provided with a plurality of bristles (K) each having an end that is so formed as to have a loop-like shape. The loop-like end comes in contact with the grid surface facing the discharge wire (85).
Claims10
A charging device arranged opposed to a surface of a body to charge the body surface, the charging device comprising:
- a discharge wire to which a charging bias is applied;
- a box-like shield surrounding the discharge wire and having an opening facing the surface of the body;
- a grid provided in the opening and applied with a grid voltage;
- a moving base movable along the discharge wire;
- a drive unit for moving the moving base;
- a cleaning member mounted on the moving base to clean a surface of the grid facing the discharge wire in accordance with movement of the moving base;
- wherein the cleaning member is provided with a plurality of bristles each having an end that is so formed as to have a loop-like shape;
- and
- wherein the loop-like end comes in contact with the grid surface facing the discharge wire.
An image forming apparatus comprising:
- a photosensitive member as a body to be charged;
- a charging device for charging a surface of the photosensitive member;
- an exposure device for radiating a light to the charged surface of the photosensitive member to form an electrostatic latent image on the surface;
- a developing device for developing the electrostatic latent image to form a toner image;
- and
- a transferring device for transferring the toner image onto a sheet;
- the charging device including:
- a discharge wire to which a charging bias is applied;
- a box-like shield surrounding the discharge wire and having an opening facing the surface of the photosensitive member;
- a grid provided in the opening and applied with a grid voltage;
- a moving base movable along the discharge wire;
- a drive unit for moving the moving base;
- a cleaning member mounted on the moving base to clean a surface of the grid facing the discharge wire in accordance with movement of the moving base;
- wherein the cleaning member is provided with a plurality of bristles each having an end that is so formed as to have a loop-like shape;
- and
- wherein the loop-like end comes in contact with the grid surface facing the discharge wire.
Dependencies are inferred from the claim text.