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US 7,003,243 B2Granted
Charger and image forming apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorToshimi Yamashita
Life of this patent
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Abstract
A charger in one embodiment of this invention includes an electrode cleaning mechanism having a film-like elastic sheet which is deformed by a provided predetermined stress, wherein deposits deposited on the edge of a sawtooth electrode are removed, and a potential above a certain level can be given to the surface of a photoconductor drum.
Claims17
A charger comprising:
- an electrode having a plurality of charging needles and which is a sheet-shaped electric conductor having a first plane including a straight line in an axial direction of an image carrier;
- and
- an electrode cleaning mechanism contacting tip ends of the charging needles, and including a sheet section having a second plane arranged perpendicularly to the first plane of the electrode, and a holding member for holding the sheet section along an axial direction of an image carrier.
An image forming apparatus comprising:
- an image carrier which holds a latent image and a developer image;
- a charger including an electrode, an electrode cleaning mechanism and a moving mechanism,
- the electrode having a plurality of charging needles and which is a sheet-shaped electric conductor having a first plane including a straight line in an axial direction of an image carrier,
- the electrode cleaning mechanism contacting tip ends of the charging needles, and including a sheet section having a second plane arranged perpendicularly to the first plane of the electrode, and a holding member for holding the sheet section along an axial direction of an image carrier,
- the moving mechanism moving the electrode cleaning mechanism along the electrode;
- a development device which supplies a developer to the image carrier to which the predetermined potential is supplied by the charger;
- and
- a transfer device which transfers the developer image formed on the image carrier onto an output medium.
5 more elements
Dependencies are inferred from the claim text.