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US 9,317,008 B2Granted
Image forming apparatus employing cleanerless system
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsHiroshi Handa, Takeshi Bito, Hiroki Mori
Life of this patent
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Abstract
An image forming apparatus includes a developing roller and a photosensitive drum configured to rotate about a first axis, and has a peripheral surface. The developing roller is configured to contact the photosensitive drum and is configured to supply developer to the photosensitive drum by rotating about a second axis positioned lower than the first axis in a vertical direction to form a visible image on the peripheral surface. Extraneous matter on the peripheral surface is recovered only by the developing roller.
Claims13
An image forming apparatus comprising:
- a photosensitive drum configured to rotate about a first axis and having a peripheral surface;
- a developing roller configured to contact the photosensitive drum and configured to supply developer to the photosensitive drum by rotating about a second axis positioned lower than the first axis in a vertical direction to form a visible image on the peripheral surface, extraneous matter on the peripheral surface being recovered only by the developing roller;
- and
- a film member overlapping the first axis when projected in the vertical direction and having a portion contacting a circumferential surface of the developing roller.
1 more element
An image forming apparatus comprising:
- a photosensitive drum configured to rotate about a first axis and having a peripheral surface;
- a developing roller configured to contact the photosensitive drum and configured to rotate about a second axis positioned lower than the first axis in a vertical direction;
- and
- a transfer roller configured to contact the photosensitive drum and configured to rotate about a third axis, the transfer roller being positioned higher than the second axis in the vertical direction, only the developing roller and the transfer roller being in contact with peripheral surface.
1 more element
Dependencies are inferred from the claim text.