Image forming apparatus and exposure device
First Claim
1. An image forming apparatus comprising:
- an image carrier configured to rotate; and
an exposure unit configured to expose the image carrier to light, the exposure unit including a plurality of light emitters, a holding unit, and first contact portions, the plurality of light emitters arranged along a rotation axis direction of the image carrier, the holding unit configured to hold the plurality of light emitters, the first contact portions positioned on the holding unit so as to sandwich the plurality of light emitters therebetween,wherein the exposure unit is configured to move away from the image carrier in an optical axis direction of the exposure unit in response to the image carrier being pushed against the first contact portions, and the exposure unit and the image carrier are configured to be positioned with respect to each other in response to the first contact portions coming into contact with the image carrier,wherein the first contact portions comprise at least two first contact portions protruding in the optical axis direction of the exposure unit and sandwiching the plurality of light emitters therebetween, andwherein one of the at least two first contact portions that is located on a downstream side in a direction in which the image carrier is configured to be inserted protrudes to a larger degree than another one of the at least two first contact portions that is located on an upstream side in the direction in which the image carrier is configured to be inserted.
2 Assignments
0 Petitions
Accused Products
Abstract
An image forming apparatus includes an image carrier that rotates; and an exposure unit that includes multiple light emitters, a holding unit, and first contact portions, the multiple light emitters being arranged along a rotation axis direction of the image carrier, the holding unit holding the multiple light emitters, the first contact portions being positioned on the holding unit so as to sandwich the multiple light emitters therebetween, the exposure unit exposing the image carrier to light. While the image carrier is being mounted on an apparatus body, the exposure unit is moved away from the image carrier in an optical axis direction of the exposure unit as a result of the first contact portions coming into contact with the image carrier, and the exposure unit and the image carrier are positioned as a result of the first contact portions coming into contact with the image carrier.
3 Citations
6 Claims
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1. An image forming apparatus comprising:
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an image carrier configured to rotate; and an exposure unit configured to expose the image carrier to light, the exposure unit including a plurality of light emitters, a holding unit, and first contact portions, the plurality of light emitters arranged along a rotation axis direction of the image carrier, the holding unit configured to hold the plurality of light emitters, the first contact portions positioned on the holding unit so as to sandwich the plurality of light emitters therebetween, wherein the exposure unit is configured to move away from the image carrier in an optical axis direction of the exposure unit in response to the image carrier being pushed against the first contact portions, and the exposure unit and the image carrier are configured to be positioned with respect to each other in response to the first contact portions coming into contact with the image carrier, wherein the first contact portions comprise at least two first contact portions protruding in the optical axis direction of the exposure unit and sandwiching the plurality of light emitters therebetween, and wherein one of the at least two first contact portions that is located on a downstream side in a direction in which the image carrier is configured to be inserted protrudes to a larger degree than another one of the at least two first contact portions that is located on an upstream side in the direction in which the image carrier is configured to be inserted. - View Dependent Claims (2, 3, 6)
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4. An exposure device comprising:
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an exposing member that includes a plurality of light emitters arranged along a rotation axis direction of an image carrier configured to rotate, the exposing member configured to expose the image carrier with light; a supporter configured to support the image carrier and the exposing member; and a guide portion formed on the exposing member and protruding into a path along which the image carrier is configured to be inserted into the supporter in the rotation axis direction of the image carrier, the guide portion configured to guide the exposing member in an optical axis direction of the exposing member to a predetermined position in response to the guide portion being pressed by the image carrier, wherein the guide portion comprises first and second guide portions protruding in the optical axis direction of the exposure member and sandwiching the plurality of light emitters therebetween, and wherein the first guide portion is located on a downstream side in a direction in which the image carrier is configured to be inserted and protrudes to a larger degree than the second guide portion that is located on an upstream side in the direction in which the image carrier is configured to be inserted. - View Dependent Claims (5)
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Specification