Abstract: There is provided an exposing device which includes an elongated optical head in which a plurality of light emitting portions are arranged, and a supporting member to which the optical head is adhered. The optical head and the supporting member are adhered by a first adhesive, and a second adhesive of which a modulus of elasticity after curing is lower than that of the first adhesive. The second adhesive is applied in a second adhesive area which is located at a boundary between the optical head and the supporting member and which is longer, in a longitudinal direction of the optical head, than a first adhesive area which is located at the boundary and to which the first adhesive is applied.

Abstract: A light source apparatus includes a semiconductor laser which emits a laser beam, a coupling lens which converts the laser beam emitted from the semiconductor laser into a light flux, and a cylindrical lens into which the light flux is allowed to come from the coupling lens. The cylindrical lens is integrally formed with a lens portion, an outer circumferential portion which is arranged at an outer circumference of the lens portion, and a support portion which extends from the outer circumferential portion toward the semiconductor laser and which supports the coupling lens.

Abstract: An image forming apparatus includes: a photosensitive drum configured to rotate about a rotational axis extending in an axial direction; and a charger that charges the photosensitive drum. The charger includes: a wire electrode; a grid electrode having a grid surface that faces the photosensitive drum between the wire electrode and the photosensitive drum; and a pair of shield electrodes, which faces each other with interposing the wire electrode therebetween, and which extends in a substantially orthogonal direction to the grid electrode. The grid surface is inclined to a second plane such that the grid electrode and the shield electrode come close to the photosensitive drum at a more downstream side in a rotating direction of the photosensitive drum than a first plane, wherein the first plane includes the wire electrode and the rotational axis of the photosensitive drum, and the second plane is orthogonal to the first plane.

Abstract: A light source device is provided, which includes: a hold member; a light source held by the hold member; an optical element held by the hold member; and a hardened first adhesive agent bonding at least one of the light source and the optical element to the holding member. The hardened first adhesive agent has elasticity.

Abstract: There is provided an exposing device which includes an elongated optical head in which a plurality of light emitting portions are arranged, and a supporting member to which the optical head is adhered. The optical head and the supporting member are adhered by a first adhesive, and a second adhesive of which a modulus of elasticity after curing is lower than that of the first adhesive. The second adhesive is applied in a second adhesive area which is located at a boundary between the optical head and the supporting member and which is longer, in a longitudinal direction of the optical head, than a first adhesive area which is located at the boundary and to which the first adhesive is applied.

Abstract: There is provided an exposing device which includes an elongated optical head in which a plurality of light emitting portions are arranged, and a supporting member to which the optical head is adhered. The optical head and the supporting member are adhered by a first adhesive, and a second adhesive of which a modulus of elasticity after curing is lower than that of the first adhesive. The second adhesive is applied in a second adhesive area which is located at a boundary between the optical head and the supporting member and which is longer, in a longitudinal direction of the optical head, than a first adhesive area which is located at the boundary and to which the first adhesive is applied.

Abstract: An optical scanner includes: a light source; a light deflector configured to deflect a light beam from the light source in a main scanning direction; a scanning lens through which the light beam having been deflected by the light deflector passes; a beam detector configured to detect the light beam; a mirror disposed between the light deflector and the scanning lens in an optical axis direction of the scanning lens and configured to reflect the light beam having been deflected by the light deflector toward the beam detector; and a wall portion configured to cover one end face of the mirror that faces the scanning lens, wherein the surface of the wall portion facing the scanning lens is tilted with respect to a sub-scanning direction orthogonal to the main scanning direction.

Abstract: A light source device includes a light source, a coupling lens configured to convert light emitted from the light source into a beam of light, a holding member configured to hold the coupling lens, and a frame to which the holding member is fixed. The holding member includes a tubular main body portion for holding the coupling lens, and a pair of first protrusions sticking out from an outer peripheral surface of the main body portion. The pair of first protrusions have fixing surfaces lying in the same plane and fixed to the frame.

Abstract: A light source device is provided, which includes: a hold member; a light source held by the hold member; an optical element held by the hold member; and a hardened first adhesive agent bonding at least one of the light source and the optical element to the holding member. The hardened first adhesive agent has elasticity.

Abstract: In a light source device, a light-emitting element and a coupling lens configured to condense a beam of light emitted from the light-emitting element are held by a holding member. The holding member has an adherend that is opposite to a surface of the coupling lens facing to the light-emitting element in a direction of an optical axis of the coupling lens. Part of the surface of the coupling lens facing to the light-emitting element is bonded to the adherend of the holding member. In the optical scanner which includes this light source device, a beam of light emitted from the light source device is deflected by a deflector so that a target surface is scanned with the beam of light, and the deflected beam of light is caused by an image forming optical system to focus on the target surface, to form an image thereon.

Abstract: In a scanner housing of an optical scanner fixed to a main body housing of an image forming apparatus, an opposite wall is disposed between a support wall on which an optical element is supported and a wall of the main body housing. A space at an extreme end of an inner projection has a distance smaller than distances at all other spaces between the support wall and the opposite wall. A space at an extreme end of an outer projection has a distance smaller than distances at all other spaces between the wall of the main body housing and the opposite wall. The space at the extreme end of the inner projection overlaps with the space at the extreme end of the outer projection as viewed from a direction in which the inner projection and the outer projection project.

Abstract: An image forming apparatus includes: a photosensitive drum configured to rotate about a rotational axis extending in an axial direction; and a charger that charges the photosensitive drum. The charger includes: a wire electrode; a grid electrode having a grid surface that faces the photosensitive drum between the wire electrode and the photosensitive drum; and a pair of shield electrodes, which faces each other with interposing the wire electrode therebetween, and which extends in a substantially orthogonal direction to the grid electrode. The grid surface is inclined to a second plane such that the grid electrode and the shield electrode come close to the photosensitive drum at a more downstream side in a rotating direction of the photosensitive drum than a first plane, wherein the first plane includes the wire electrode and the rotational axis of the photosensitive drum, and the second plane is orthogonal to the first plane.

Abstract: A light source device includes a light source, a coupling lens configured to convert light emitted from the light source into a beam of light, a holding member configured to hold the coupling lens, and a frame to which the holding member is fixed. The holding member includes a tubular main body portion for holding the coupling lens, and a pair of first protrusions sticking out from an outer peripheral surface of the main body portion. The pair of first protrusions have fixing surfaces lying in the same plane and fixed to the frame.

Abstract: In a scanner housing of an optical scanner fixed to a main body housing of an image forming apparatus, an opposite wall is disposed between a support wall on which an optical element is supported and a wall of the main body housing. A space at an extreme end of an inner projection has a distance smaller than distances at all other spaces between the support wall and the opposite wall. A space at an extreme end of an outer projection has a distance smaller than distances at all other spaces between the wall of the main body housing and the opposite wall. The space at the extreme end of the inner projection overlaps with the space at the extreme end of the outer projection as viewed from a direction in which the inner projection and the outer projection project.

Abstract: An optical scanner includes: a light source; a light deflector configured to deflect a light beam from the light source in a main scanning direction; a scanning lens through which the light beam having been deflected by the light deflector passes; a beam detector configured to detect the light beam; a mirror disposed between the light deflector and the scanning lens in an optical axis direction of the scanning lens and configured to reflect the light beam having been deflected by the light deflector toward the beam detector; and a wall portion configured to cover one end face of the mirror that faces the scanning lens, wherein the surface of the wall portion facing the scanning lens is tilted with respect to a sub-scanning direction orthogonal to the main scanning direction.

Abstract: A light source apparatus includes a semiconductor laser which emits a laser beam, a coupling lens which converts the laser beam emitted from the semiconductor laser into a light flux, and a cylindrical lens into which the light flux is allowed to come from the coupling lens. The cylindrical lens is integrally formed with a lens portion, an outer circumferential portion which is arranged at an outer circumference of the lens portion, and a support portion which extends from the outer circumferential portion toward the semiconductor laser and which supports the coupling lens.

Abstract: In a light source device, a light-emitting element and a coupling lens configured to condense a beam of light emitted from the light-emitting element are held by a holding member. The holding member has an adherend that is opposite to a surface of the coupling lens facing to the light-emitting element in a direction of an optical axis of the coupling lens. Part of the surface of the coupling lens facing to the light-emitting element is bonded to the adherend of the holding member. In the optical scanner which includes this light source device, a beam of light emitted from the light source device is deflected by a deflector so that a target surface is scanned with the beam of light, and the deflected beam of light is caused by an image forming optical system to focus on the target surface, to form an image thereon.

Abstract: There is provided an exposing device which includes an elongated optical head in which a plurality of light emitting portions are arranged, and a supporting member to which the optical head is adhered. The optical head and the supporting member are adhered by a first adhesive, and a second adhesive of which a modulus of elasticity after curing is lower than that of the first adhesive. The second adhesive is applied in a second adhesive area which is located at a boundary between the optical head and the supporting member and which is longer, in a longitudinal direction of the optical head, than a first adhesive area which is located at the boundary and to which the first adhesive is applied.

Abstract: A light source device is provided, which includes: a hold member; a light source held by the hold member; an optical element held by the hold member; and a hardened first adhesive agent bonding at least one of the light source and the optical element to the holding member. The hardened first adhesive agent has elasticity.

Abstract: An optical scanning device that emits a light beam and scans a scanning subject with the light beam, includes: a holder mounted with a light source that emits the light beam, a collimator lens that converts the emitted light beam to approximately collimated beam, and a slit that interrupts apart of the collimated beam; a deflector having a reflecting surface, the deflector deflecting the light beam emitted from the light source; a cylindrical lens that focuses the light beam that has passed through the slit onto the reflecting surface of the deflector; and a frame having a base stage that is mounted with the deflector and the cylindrical lens. The holder is fixed to the frame by bonding with an adhesive in such a manner that a bottom end portion of the holder is spaced from a top surface of the base stage.