Abstract: An optical component mounting structure includes an elastic member and a mounting portion. The elastic member applies pressure to an optical component toward a flat surface portion of a base. The mounting portion is provided at the base and mounts the elastic member. The elastic member has a pressing portion, a holding portion, and a positioning hole. The pressing portion has a tongue piece shape and elastically comes in contact with a light guide member. The holding portion supports one end of the pressing portion and holds elastically the mounting portion of the base. The positioning hole is formed through the holding portion and is to be engaged with each of a pair of positioning convex portions provided at the mounting portion of the base.

Abstract: A rectangular plate optical reflecting mirror is provided in an optical scanner. The optical reflecting mirror reflects an optical beam onto a surface to be scanned. The optical reflecting mirror includes a center portion and end portions in a longitudinal direction. The center portion has a greater thickness than that of the end portions. Accordingly, rigidity of the optical reflecting mirror can be increased, and its characteristic frequency can be set at a high value. Thus, resonance of the optical reflecting mirror can be prevented from occurring as a result of vibration of a housing which vibrates with a plurality of vibration modes.

Abstract: An optical reading device includes a housing, a document platen member, a scanning unit, a cable and an insulating sheet. The cable includes a first end which is fixed to the scanning unit, a second end which is fixed to the bottom plate and an intermediate portion which is held in surface contact with the bottom plate and curved and deformed according to a reciprocal movement of the scanning unit. The insulating sheet is interposed between the bottom plate and the intermediate portion of the cable. The housing includes a recess formed in the bottom plate. The insulating sheet covers an opening of the recess, the upper surface thereof is in contact with the intermediate portion of the cable and a space is formed between the lower surface of the insulating sheet and the bottom surface of the recess.

Abstract: This image reading apparatus, includes: a first retaining member that retains a lens unit; a second retaining member that retains a sensor unit; and a positioning member that sets a relative position between the first retaining member and the second retaining member, wherein the positioning member comprises: a first concave portion that is sagged from a first contact surface to be in contact with the first retaining member; and a second concave portion that is sagged from a second contact surface to be in contact with the second retaining member, and the positioning member is fixed to the first retaining member and the second retaining member by an adhesive filled in the first concave portion and the second concave portion.

Abstract: An optical reading device includes a housing, a document platen member, a scanning unit, a cable and an insulating sheet. The cable includes a first end which is fixed to the scanning unit, a second end which is fixed to the bottom plate and an intermediate portion which is held in surface contact with the bottom plate and curved and deformed according to a reciprocal movement of the scanning unit. The insulating sheet is interposed between the bottom plate and the intermediate portion of the cable. The housing includes a recess formed in the bottom plate. The insulating sheet covers an opening of the recess, the upper surface thereof is in contact with the intermediate portion of the cable and a space is formed between the lower surface of the insulating sheet and the bottom surface of the recess.

Abstract: An optical component mounting structure includes an elastic member and a mounting portion. The elastic member applies pressure to an optical component toward a flat surface portion of a base. The mounting portion is provided at the base and mounts the elastic member. The elastic member has a pressing portion, a holding portion, and a positioning hole. The pressing portion has a tongue piece shape and elastically comes in contact with a light guide member. The holding portion supports one end of the pressing portion and holds elastically the mounting portion of the base. The positioning hole is formed through the holding portion and is to be engaged with each of a pair of positioning convex portions provided at the mounting portion of the base.

Abstract: This image reading apparatus, includes: a first retaining member that retains a lens unit; a second retaining member that retains a sensor unit; and a positioning member that sets a relative position between the first retaining member and the second retaining member, wherein the positioning member comprises: a first concave portion that is sagged from a first contact surface to be in contact with the first retaining member; and a second concave portion that is sagged from a second contact surface to be in contact with the second retaining member, and the positioning member is fixed to the first retaining member and the second retaining member by an adhesive filled in the first concave portion and the second concave portion.

Abstract: Disclosed is a scanning optical module, which includes a light source, a rotatable multifaceted mirror adapted to scanningly deflect a scanning beam emitted from the light source, in a given direction, a driving device adapted to drivingly rotate the rotatable multifaceted mirror through a shaft thereof, a plate-shaped member formed with a driving device-mounting portion mounting thereto the driving device in such a manner as to absorb heat generated in the shaft, an air blower adapted to generate an airstream, and an airstream passage-defining member adapted to direct the airstream from the air blower, toward the driving device-mounting portion of the plate-shaped member.

Abstract: A rectangular plate optical reflecting mirror is provided in an optical scanner. The optical reflecting mirror reflects an optical beam onto a surface to be scanned. The optical reflecting mirror includes a center portion and end portions in a longitudinal direction. The center portion has a greater thickness than that of the end portions. Accordingly, rigidity of the optical reflecting mirror can be increased, and its characteristic frequency can be set at a high value. Thus, resonance of the optical reflecting mirror can be prevented from occurring as a result of vibration of a housing which vibrates with a plurality of vibration modes.

Abstract: An optical scanning apparatus includes a light source which emits optical beam; a light deflector which deflects the optical beam from the light source in a main scanning direction; an optical system which leads the optical beam from the light deflector to a scanned surface; and an optical sensor equipped with a light-receiving part to receive the optical beam from the light deflector excluding a part of the optical beam which falls in an effective exposure area of the scanned surface and used to control scan timing; and a holding member which holds the optical sensor with the light-receiving part tilted at a predetermined angle with respect to the main scanning direction.

Abstract: Disclosed is a scanning optical module, which includes a light source, a rotatable multifaceted mirror adapted to scanningly deflect a scanning beam emitted from the light source, in a given direction, a driving device adapted to drivingly rotate the rotatable multifaceted mirror through a shaft thereof, a plate-shaped member formed with a driving device-mounting portion mounting thereto the driving device in such a manner as to absorb heat generated in the shaft, an air blower adapted to generate an airstream, and an airstream passage-defining member adapted to direct the airstream from the air blower, toward the driving device-mounting portion of the plate-shaped member.

Abstract: An optical scanning apparatus includes a light source which emits optical beam; a light deflector which deflects the optical beam from the light source in a main scanning direction; an optical system which leads the optical beam from the light deflector to a scanned surface; and an optical sensor equipped with a light-receiving part to receive the optical beam from the light deflector excluding a part of the optical beam which falls in an effective exposure area of the scanned surface and used to control scan timing; and a holding member which holds the optical sensor with the light-receiving part tilted at a predetermined angle with respect to the main scanning direction.