An image forming apparatus, comprising:
- an apparatus main body;
- a cover member which is movable in a circular direction between an first position and a second position relative to the apparatus main body;
- a first rotary body that is rotatably supported on a side of the cover member;
- a second rotary body that is rotatably supported on a side of the apparatus main body and, when the cover member is in the second position, comes in press-contact with the first rotary body so that a recording medium is conveyed between the second rotary body and the first rotary body;
- a rotary shaft that is provided at each of both end portions of the first rotary body;
- a bearing member that rotatably supports the rotary shaft;
- a spring member that biases the bearing member to press the first rotary body against the second rotary body;
- a bearing support portion that is provided in the cover member and supports, in addition to the spring member, the bearing member so that the bearing member is movable in a first direction connecting between rotation centers of the first and second rotary bodies and a second direction, wherein the second direction is perpendicular to the first direction and to an axial direction of the rotary shaft;
- and
- a bearing guide portion that is provided in the apparatus main body and has a guide groove that extends in the first direction and in which an outer peripheral portion of the bearing member is fitted when the cover member is in the second position,
- wherein the bearing support portion has an opening portion that extends in the first and second directions and a contact portion that is formed on an opposite side to the opening portion relative to the rotary shaft,
- the bearing member has a cylindrical bearing portion that rotatably supports the rotary shaft, a convex portion that is formed so as to protrude from an outer peripheral surface of the cylindrical bearing portion and is movable within the opening portion in the first and second directions, and a regulation lug that is formed at a position deviating from a position of the convex portion in a radial direction of the cylindrical bearing portion and, when the cover member is in the first position, can come in contact with the contact portion under a biasing force of the spring member, and
- the opening portion is wider than the convex portion in both the first and second directions in such a manner that the convex portion can move in the first and second directions within the opening portion, and
- when the cover member is closed with respect to the apparatus main body, the convex portion moves within the opening portion, and the outer peripheral portion of the bearing member is thereby guided into the guide groove and fitted therein, and
- the bearing support portion is formed integrally with the cover member.