Image forming apparatus, drum unit, and manufacturing method for the image forming apparatus
First Claim
1. An image forming apparatus, comprising:
- a drum unit comprising a photosensitive drum; and
an exposure head, comprising;
a plurality of light emitters aligned along an axial direction of an axis of the photosensitive drum;
a lens array for focusing light from the light emitters on the photosensitive drum;
a first frame supporting the light emitters and the lens array;
a second frame supporting the first frame; and
a spacer arranged between the second frame and the drum unit,wherein the second frame comprises a first supporting face supporting the first frame and a second supporting face supporting the spacer, andwherein the second supporting face is located to be farther than the first supporting face from the axis of the photosensitive drum.
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Accused Products
Abstract
An image forming apparatus, having a photosensitive drum assembly, an exposure head, and a bearing, is provided. The photosensitive drum assembly includes a photosensitive drum and a flange disposed at an end of the photosensitive drum in an axial direction of an axis of the photosensitive drum. The flange contacts an inner surface of the photosensitive drum. The exposure head includes a plurality of light emitters aligned along the axial direction of the photosensitive drum, a lens array focusing light from the light emitters on the photosensitive drum, and a head frame to support the light emitters and the lens array. The bearing has a first contact face to contact the exposure head to define a distance between the lens array and the photosensitive drum along a direction of an optical axis of the light.
29 Citations
20 Claims
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1. An image forming apparatus, comprising:
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a drum unit comprising a photosensitive drum; and an exposure head, comprising; a plurality of light emitters aligned along an axial direction of an axis of the photosensitive drum; a lens array for focusing light from the light emitters on the photosensitive drum; a first frame supporting the light emitters and the lens array; a second frame supporting the first frame; and a spacer arranged between the second frame and the drum unit, wherein the second frame comprises a first supporting face supporting the first frame and a second supporting face supporting the spacer, and wherein the second supporting face is located to be farther than the first supporting face from the axis of the photosensitive drum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An image forming apparatus, comprising:
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a drum unit comprising a photosensitive drum; an exposure head, comprising; a plurality of light emitters aligned along an axial direction of an axis of the photosensitive drum; a lens array for focusing light from the light emitters on the photosensitive drum; a first frame supporting the light emitters and the lens array; and a second frame supporting the first frame; and a gap-adjusting member arranged between the second frame and the drum unit, wherein the second frame comprises a first face contacting the first frame in a first direction and a second face contacting the gap-adjusting member in the first direction, the first direction being an optical direction of the light from the light emitters, and wherein the second face is located to be farther than the first face from the axis of the photosensitive drum. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification