Abstract: An optical scanning device including: a light source part that is provided in a resin-molded casing and emits a laser beam; a deflector that is arranged in the casing and deflects and scans the laser beam, the deflector including, a rotary polygon mirror that reflects the laser beam, a driving source that rotates the rotary polygon mirror, and a substrate member; and the casing including, a fixed wall that extends in a direction perpendicular to a mirror surface of the rotary polygon mirror, a first fixing part that is provided to the fixed wall and fixes the light source part, a second fixing part that is provided to the fixed wall and fixes the substrate member, and a reinforcing part that is provided to the fixed wall and extends toward the emission direction so as to continuously connect the first fixing part and the second fixing part.

Abstract: A fixing device configured to thermally fix a developing agent image to a recording sheet includes a fixing belt having a tubular shape defining an inner space, a heat generating member and a nip plate which are disposed in the inner space, and a rotating member disposed outside the inner space. The nip plate includes a plate-shaped portion holding the fixing belt against the rotating member, and a bent portion located downstream of the plate-shaped portion in a conveying direction of the recording sheet and bent to define a recess facing away from the rotating member. The bent portion protrudes farther away from the heat generating member than the plate-shaped member. A temperature sensor for sensing a temperature of the nip plate is fitted in the recess of the bent portion so as not to be displaced in the conveying direction.

Abstract: An image forming apparatus includes an image forming portion configured to form an image on a recording sheet, a main body including a pair of frames and a bridging member connecting the pair of frames, a feed roller, a sheet receiving plate, and a lifting member. The sheet receiving plate is configured to receive the recording sheet, and pivot between a nearby position where the sheet receiving plate is disposed near the feed roller and a remote position where the sheet receiving plate is disposed remote from the feed roller. The lifting member is disposed opposite to the feed roller relative to the sheet receiving plate and configured to lift the sheet receiving plate such that the sheet receiving plate is disposed in the nearby position. The lifting member includes a pivot shaft rotatably supported by the bridging member and a lift portion configured to contact the sheet receiving plate.

Abstract: An optical scanning device including: a light source part that is provided in a resin-molded casing and emits a laser beam; a deflector that is arranged in the casing and deflects and scans the laser beam, the deflector including, a rotary polygon mirror that reflects the laser beam, a driving source that rotates the rotary polygon mirror, and a substrate member; and the casing including, a fixed wall that extends in a direction perpendicular to a mirror surface of the rotary polygon mirror, a first fixing part that is provided to the fixed wall and fixes the light source part, a second fixing part that is provided to the fixed wall and fixes the substrate member, and a reinforcing part that is provided to the fixed wall and extends toward the emission direction so as to continuously connect the first fixing part and the second fixing part.