A fixation device includes: a heating roll that heats a transported recording medium whose front end is gripped by a gripping part while rotating; a pressing roll that is disposed so as to face the heating roll, around which at least a part of the transported recording medium is wound, and presses the wound part of the recording medium toward the heating roll while rotating; a peeling part that peels the recording medium off from the pressing roll by lifting the front end of the recording medium up in a state where the front end of the recording medium has passed a portion where the pressing roll and the heating roll face each other and is no longer gripped by the gripping part; and a reducing part that reduces momentum of the peeling part lifting the front end of the recording medium up.

A fixation device includes: a heating roll that heats a transported recording medium whose front end is gripped by a gripping part while rotating; a pressing roll that is disposed so as to face the heating roll, around which at least a part of the transported recording medium is wound, and presses the wound part of the recording medium toward the heating roll while rotating; a peeling part that peels the recording medium off from the pressing roll by lifting the front end of the recording medium up in a state where the front end of the recording medium has passed a portion where the pressing roll and the heating roll face each other and is no longer gripped by the gripping part; and a reducing part that reduces momentum of the peeling part lifting the front end of the recording medium up.

A fixing apparatus a tubular film, a nip forming member that contacts an inner surface of the film, and a roller that forms a nip portion together with the nip forming member via the film. The nip portion is an area where the film and the roller are in contact with each other and where a recording material is conveyed. The nip forming member has a protruding portion, protruding toward the roller and extending in a generatrix direction, that is provided on at least one of an upstream side and a downstream side in the nip in a conveying direction of the recording material. In the conveying direction of the recording material, an end portion of the protruding portion in the generatrix direction is arranged at a location different from a central portion of the protruding portion in the generatrix direction.

An image-forming apparatus includes a motor, a photosensitive drum, a developing roller, and a separation mechanism for moving the developing roller relative to the photosensitive drum. The separation mechanism includes: an end cam rotatable in a rotational direction; and a cam follower movable in accordance with a rotation of the end cam. The end cam includes a first surface, a second surface, a first sloped surface connecting the second surface to the first surface, and a second sloped surface connecting the first surface to the second surface in the rotational direction. The second sloped surface includes: a steep slope surface connected to the second surface; and a gentle slope surface connecting the first surface to the steep slope surface. The gentle slope surface slopes relative to the first surface by an angle smaller than an angle by which the steep slope surface slopes relative to the first surface.

Provided is a fixing device to press a printing medium. The fixing device includes a rotating member and a pressure roller disposed to face the rotating member. The pressure roller includes a first groove and a second groove that extend along an outer circumferential surface respectively from a first end portion and a second end portion of the pressure roller. The first and second grooves are inclined with respect to a rotational axis of the pressure roller.

Provided is a fixing device to press a printing medium. The fixing device includes a rotating member and a pressure roller disposed to face the rotating member. The pressure roller includes a first groove and a second groove that extend along an outer circumferential surface respectively from a first end portion and a second end portion of the pressure roller. The first and second grooves are inclined with respect to a rotational axis of the pressure roller.

In an image forming apparatus, a conveyance section forms a conveyance path and conveys a sheet in a conveyance direction. The conveyance section includes a conveyance roller for rotating around a roller shaft extending in a direction orthogonal to the conveyance direction, and a guide member. The guide member includes a first guide member for rotating around a first axial line to open/close with respect to a first partial region of the conveyance path, and a second guide member for rotating around a second axial line to open/close with respect to a second partial region different from the first partial region. The first axial line extends in a direction parallel to a longitudinal direction of the roller shaft. The second axial line extends in a direction intersecting with the longitudinal direction. The first guide member opens in conjunction with an opening action of the second guide member.

An image-forming apparatus includes a motor, a photosensitive drum, a developing roller, and a separation mechanism for moving the developing roller relative to the photosensitive drum. The separation mechanism includes: an end cam rotatable in a rotational direction; and a cam follower movable in accordance with a rotation of the end cam. The end cam includes a first surface, a second surface, a first sloped surface connecting the second surface to the first surface, and a second sloped surface connecting the first surface to the second surface in the rotational direction. The second sloped surface includes: a steep slope surface connected to the second surface; and a gentle slope surface connecting the first surface to the steep slope surface. The gentle slope surface slopes relative to the first surface by an angle smaller than an angle by which the steep slope surface slopes relative to the first surface.

According to one embodiment, an image forming apparatus includes a light emitting element array, a photosensitive member, a transparent member, a gap spacer, and a biasing member. The light emitting element array includes a plurality of light emitting elements. The photosensitive member forms a latent image by being exposed by light emitted from the light emitting element array. The transparent member is positioned between the photosensitive member and the light emitting element array. The transparent member has a relative position fixed with respect to the light emitting element array, and transmits the light emitted from the light emitting element array. The gap spacer keeps a distance between the photosensitive member and the transparent member constant. The biasing member biases the transparent member toward the photosensitive member.

According to one embodiment, an image forming apparatus includes a light emitting element array, a photosensitive member, a transparent member, a gap spacer, and a biasing member. The light emitting element array includes a plurality of light emitting elements. The photosensitive member forms a latent image by being exposed by light emitted from the light emitting element array. The transparent member is positioned between the photosensitive member and the light emitting element array. The transparent member has a relative position fixed with respect to the light emitting element array, and transmits the light emitted from the light emitting element array. The gap spacer keeps a distance between the photosensitive member and the transparent member constant. The biasing member biases the transparent member toward the photosensitive member.