Image forming apparatus including cleaning rod

1 . An image forming apparatus comprising:

a rotating photosensitive member;

an optical print head including a plurality of light emitting portions provided along a rotational axis direction of the photosensitive member and configured to emit light to expose the photosensitive member, a substrate on which the plurality of light emitting portions is provided, a lens configured to condense the light emitted by the plurality of light emitting portions on the photosensitive member, and a holder configured to hold the substrate and the lens;

a cleaning rod configured to abut on the lens and clean the lens;

a first guiding member configured to guide the cleaning rod along the rotational axis direction and restrict movement of the cleaning rod in an optical axis direction orthogonal to both the rotational axis direction and a width direction of the substrate orthogonal to the rotational axis direction, the first guiding member being separate from the holder; and

a second guiding member separate from the holder and configured to guide the cleaning rod between the photosensitive member and the optical print head.

2 . The image forming apparatus according to claim 1 , wherein the first guiding member includes a first guide portion configured to guide the cleaning portion in a direction of approaching the lens in the optical axis direction and cause the cleaning portion to abut on the lens.

3 . The image forming apparatus according to claim 1 , wherein the first guiding member includes a second guide portion provided on a back side of the first guide portion in an insertion direction in which the cleaning rod is inserted, provided along the lens in the rotational axis direction, and configured to restrict a position of the cleaning rod abutting on the lens in the optical axis direction over the rotational axis direction.

4 . The image forming apparatus according to claim 1 , wherein the second guiding member includes

a first restricting portion configured to restrict a position of the cleaning rod in the width direction orthogonal to the rotational axis direction.

5 . The image forming apparatus according to claim 4 , wherein the second guiding member includes

a second restricting portion configured to restrict a position of the cleaning rod in the optical axis direction.

6 . The image forming apparatus according to claim 5 , wherein the second restricting portion is provided on a back side of the first restricting portion in the rotational axis direction, and restricts a position of the cleaning rod, restricted in the width direction by the first restricting portion, in the optical axis direction.

7 . The image forming apparatus according to claim 4 , wherein

the first restricting portions are provided to face each other on both sides in the width direction, and

a position of the cleaning rod in the width direction is restricted between the first restricting portions provided to face each other on both the sides in the width direction.

8 . The image forming apparatus according to claim 1 , wherein the cleaning rod is provided to protrude outward in the width direction with respect to the second guiding member, is provided to be movable between a position protruding outward in the width direction with respect to the second guiding member and a position retracted inward in the width direction of the second guiding member from the protruding position, and has a protruding portion guided by the first guiding member at the protruding position.

9 . The image forming apparatus according to claim 8 , wherein

a width of the cleaning rod including the protruding portion in the width direction is wider than a width of the second guiding member in the width direction, and

the protruding portion is moved from the protruding position to the retracted position during abutment on the second guiding member, and is moved from the retracted position to the protruding position when the abutment on the second guiding member is released.

10 . The image forming apparatus according to claim 8 , wherein

the cleaning rod includes an elastic portion in which a rigidity in the width direction is lower than a rigidity in the optical axis direction, and

the protruding portion is provided in the elastic portion, and moves in the width direction when the elastic portion is elastically deformed in the width direction.

11 . The image forming apparatus according to claim 10 , wherein the cleaning rod includes a guide member that restricts a position of the elastic portion in the optical axis direction.

12 . The image forming apparatus according to claim 11 , wherein a material of the guide member is a metal material.

13 . The image forming apparatus according to claim 8 , wherein

the cleaning rod includes the protruding portions on each of both sides in the width direction, and

the first guiding member includes the first guide portion and the second guide portion on each of both the sides in the width direction.

14 . The image forming apparatus according to claim 1 , wherein the second guiding member is provided on a front side of the optical print head in the rotational axis direction on an extension line of the rotational axis direction of the lens.

15 . The image forming apparatus according to claim 1 , wherein

the optical print head is provided to be movable between an exposure position of exposing the photosensitive member and a retracted position farther away from the photosensitive member than the exposure position, and

the second guiding member guides the cleaning rod between the photosensitive member and the optical print head retracted to the retracted position.