Image forming apparatus having optical print head
First Claim
Patent Images
1. An image forming apparatus, comprising:
- a photosensitive drum configured to be capable of rotating as to an apparatus main body;
an optical print head having a plurality of lenses from which light to expose the photosensitive drum is emitted;
a first rail formed on the optical print head along a longitudinal direction of the optical print head, the first rail being formed on one side of the optical print head in a perpendicular direction perpendicular to both the longitudinal direction of the optical print head and an optical axis direction of the lenses;
a second rail formed on the optical print head along a longitudinal direction of the optical print head, the second rail being formed on another side of the optical print head in the perpendicular direction; and
a guide portion into which a rod-shaped cleaning member is inserted from outside of the image forming apparatus, the guide portion guiding a move of the inserted cleaning member,wherein the guide portion is provided as a body separate from the optical print head upstream of the first rail formed on the optical print head and the second rail formed on the optical print head in a direction of insertion of the cleaning member,wherein the cleaning member includesa rubbing portion that rubs and cleans light emission faces of the lenses,a first engaging portion configured to restrict the rubbing portion from moving in a direction away from the light emission faces, by engaging the first rail and abutting the first rail from a side opposite to a side of the first rail at which the photosensitive drum is disposed, anda second engaging portion configured to restrict the rubbing portion from moving in a direction away from the light emission faces, by engaging the second rail and abutting the second rail from a side opposite to a side of the second rail at which the photosensitive drum is disposed, andwherein the cleaning member inserted into the guide portion moves in the direction of insertion while being guided by the guide portion, and the first engaging portion engages with the first rail in the direction of insertion and the second engaging portion engages with the second rail in the direction of insertion.
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Abstract
An opening, from which a cleaning member is inserted from the outer side of a main body of the image forming apparatus according to the present invention, is provided further toward the front side than an end portion of a front side of a holding member. The opening guides movement of the cleaning member in the direction of insertion as the inserted cleaning member moves toward the downstream side in the direction of insertion, so that downstream-side end portions of engaging portions in the insertion direction engage upstream-side end portions of protruding portions formed on the holding member in the direction of insertion.
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Citations
17 Claims
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1. An image forming apparatus, comprising:
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a photosensitive drum configured to be capable of rotating as to an apparatus main body; an optical print head having a plurality of lenses from which light to expose the photosensitive drum is emitted; a first rail formed on the optical print head along a longitudinal direction of the optical print head, the first rail being formed on one side of the optical print head in a perpendicular direction perpendicular to both the longitudinal direction of the optical print head and an optical axis direction of the lenses; a second rail formed on the optical print head along a longitudinal direction of the optical print head, the second rail being formed on another side of the optical print head in the perpendicular direction; and a guide portion into which a rod-shaped cleaning member is inserted from outside of the image forming apparatus, the guide portion guiding a move of the inserted cleaning member, wherein the guide portion is provided as a body separate from the optical print head upstream of the first rail formed on the optical print head and the second rail formed on the optical print head in a direction of insertion of the cleaning member, wherein the cleaning member includes a rubbing portion that rubs and cleans light emission faces of the lenses, a first engaging portion configured to restrict the rubbing portion from moving in a direction away from the light emission faces, by engaging the first rail and abutting the first rail from a side opposite to a side of the first rail at which the photosensitive drum is disposed, and a second engaging portion configured to restrict the rubbing portion from moving in a direction away from the light emission faces, by engaging the second rail and abutting the second rail from a side opposite to a side of the second rail at which the photosensitive drum is disposed, and wherein the cleaning member inserted into the guide portion moves in the direction of insertion while being guided by the guide portion, and the first engaging portion engages with the first rail in the direction of insertion and the second engaging portion engages with the second rail in the direction of insertion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification