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US 6,636,252 B2Granted
Image exposure apparatus and image forming apparatus with it
AssigneeCanon Kabushiki Kaisha
InventorKeiko Hiraoka
Life of this patent
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Abstract
The present invention provides an image exposure apparatus comprising a substrate on which a plurality of light emitting elements are disposed. Wherein, the plurality of light emitting elements are arranged in a non-parallel relation to a longitudinal direction of the substrate.
Claims12
An exposure apparatus for exposing a rotating photosensitive body, comprising:
- a plurality of light emitting elements arranged in an axial direction of the photosensitive body;
- and
- light emission control means for making said light emitting elements emit light in order of arrangement of said light emitting elements, in accordance with an image signal,
- wherein said light emitting elements are disposed obliquely with respect to a rotation axis of the photosensitive body so that, in a rotation direction of the photosensitive body, a deviation of a position on the photosensitive body to be exposed by said light emitting elements on both ends of the arrangement, is greater than zero and is within ½ pixel.
1 more element
An image forming apparatus comprising:
- a photosensitive body having a rotation axis;
- charging means for charging said photosensitive body;
- a plurality of light emitting elements, arranged in an axis direction of said photosensitive body, for exposing said photosensitive body, which is charged, to form an electrostatic image;
- light emission control means for making said light emitting elements emit light in order of arrangement in accordance with an image signal;
- developing means for developing the electrostatic image;
- and
- transferring means for transferring a developed image, developed by said developing means, to a recording medium,
- wherein said light emitting elements are disposed obliquely with respect to the rotation of axis of said photosensitive body so that, in rotation direction of said photosensitive body, a deviation of a position on said photosensitive body to be exposed by said light emitting elements on both ends of the arrangement, is greater than zero and is within ½ pixel.
5 more elements
Dependencies are inferred from the claim text.