Abstract: An image forming apparatus includes an apparatus main body that includes an image formation unit forming an image on a recording material, a fixation unit that includes a fixing unit fixing the image formed by the image formation unit onto the recording material and that is attachable to and detachable from the apparatus main body, a first duct that is attached to the fixation unit to face the fixing unit and through which a gas that cools the fixing unit flows, and a second duct that is attached to the apparatus main body to be adjacent to the first duct and through which a gas that cools the fixing unit flows.

Abstract: A powder conveying device includes a first conveying component through which gas containing powder is to be conveyed; a second conveying component to which a downstream end of the first conveying component is connected and through which the gas received from the first conveying component is to be conveyed, the second conveying component extending in a second gas conveying direction that intersects a first gas conveying direction defined by the first conveying component; a third conveying component extending from the second conveying component and through which the gas received from the second conveying component is to be conveyed, the third conveying component extending in a third gas conveying direction that intersects the second gas conveying direction; a fourth conveying component to which a downstream end of the third conveying component is connected and through which the gas received from the third conveying component is to be conveyed, the fourth conveying component extending in a fourth gas conveying d

Abstract: A developing device includes: a container that contains developer; a developer holder that rotates with the developer being held on a surface thereof to transport the developer to a developing region; and a cooling unit. An introduction port is provided at a position corresponding to the developing region, the introduction port allowing suction of a floating substance generated in the developing region in a transverse direction of the container. The cooling unit is connected to the introduction port to allow passage of gas containing the floating substance in a longitudinal direction of the container, and cools the container with the gas. An intake port is connected to an end of the cooling unit in the longitudinal direction, the intake port allowing introduction of gas.

Abstract: A motor includes a rotor rotatable in a circumferential direction around a center axis extending vertically, a stator to rotate the rotor, a lead wire connected to the stator, and a housing covering the rotor and the stator from a radially outer side. The housing includes a first housing located on a first side in an axial direction, and a second housing located on a second side in the axial direction. The first housing includes a wiring convex portion protruding toward the second side in the axial direction. The second housing includes a wiring recess that is recessed toward the second side in the axial direction and penetrates in a radial direction. The wiring convex portion is located in the wiring recess. The wiring convex portion includes a tip surface opposing the second side. The wiring recess includes a bottom surface opposing the first side.

Abstract: An image forming apparatus, for forming an image with a fixing unit that fixes a toner image to a recording material and with a first transport path, includes: a first guide unit that guides one side of a recording material discharged from the fixing unit and transported through the first transport path; a second guide unit that guides the other side of the recording material transported thorough the first transport path; a blowing part through which gas is sent to the one side of the recording material transported through the first transport path; and a gas guiding part that faces the second guide unit with the first transport path interposed between the gas guiding part and the second guide unit and that guides, in a direction away from the first transport path, gas that is sent from the blowing part and whose traveling direction is changed by a recording material.

Abstract: An axial fan includes a housing, an upper motor, and a lower motor. The housing includes an upper housing and a lower housing. A lower peripheral wall of the lower housing includes first engaging portions and lower protruding pieces. The lower protruding pieces oppose the first engaging portions in an axial direction and protrude axially upward from an axially upper surface. An upper peripheral wall of the upper housing includes upper engaging claws and upper notch grooves. The upper engaging claws extend axially downward from an axially lower surface, and include a second engaging portion that engages with the first engaging portion in a lower end portion. The upper notch grooves are notched axially upward from the axially lower surface radially inward of the upper engaging claw. At least a portion of the lower protruding pieces is located in the upper notch grooves.

Abstract: A motor includes a rotor rotatable about a center axis extending vertically, a stator to rotate the rotor, and a housing covering the rotor and the stator from a radially outer side. The housing includes a first housing located on a first side in the axial direction, and a second housing located on a second side in the axial direction. The first housing includes a first opposing surface opposing the second housing in the axial direction, and a first wall portion extending from the first opposing surface to the second side in the axial direction. The second housing includes a second opposing surface opposing the first housing in the axial direction, a second wall portion extending from the second opposing surface to the first side in the axial direction, and a base portion holding the stator. The first wall portion and the second wall portion oppose each other in a radial direction.

Abstract: A motor includes a rotor, a stator, a stator accommodating portion, a seal, and a lid. The stator opposes the rotor with a gap interposed radially inward. The stator accommodating portion accommodates the stator, includes an opening on one end surface in an axial direction, and has a tubular shape. The seal is filled in the stator accommodating portion. The lid covers the opening. The stator accommodating portion includes a cutout and a pullout piece. The cutout is recessed from one end in the axial direction to the other side in the axial direction, and a lead wire connected to the stator is pulled out. The pullout piece protrudes radially outward from a bottom of the cutout, and the lead wire is positioned between the lid and the pullout piece via an elastic portion on an end surface on one side in the axial direction of the pullout piece.

Abstract: A motor includes a rotor rotatable about a center axis extending vertically, a stator to rotate the rotor, and a housing covering the rotor and the stator from a radially outer side. The housing includes a first housing located on a first side in the axial direction, and a second housing located on a second side in the axial direction. The first housing includes a first opposing surface opposing the second housing in the axial direction, and a first wall portion extending from the first opposing surface to the second side in the axial direction. The second housing includes a second opposing surface opposing the first housing in the axial direction, a second wall portion extending from the second opposing surface to the first side in the axial direction, and a base portion holding the stator. The first wall portion and the second wall portion oppose each other in a radial direction.

Abstract: An axial fan includes a housing, an upper motor, and a lower motor. The housing includes an upper housing and a lower housing. A lower peripheral wall of the lower housing includes first engaging portions and lower protruding pieces. The lower protruding pieces oppose the first engaging portions in an axial direction and protrude axially upward from an axially upper surface. An upper peripheral wall of the upper housing includes upper engaging claws and upper notch grooves. The upper engaging claws extend axially downward from an axially lower surface, and include a second engaging portion that engages with the first engaging portion in a lower end portion. The upper notch grooves are notched axially upward from the axially lower surface radially inward of the upper engaging claw. At least a portion of the lower protruding pieces is located in the upper notch grooves.

Abstract: Provided is a motor including a shaft, a bearing housing in a tubular shape that rotatably supports the shaft with a bearing, a casing that holds an upper end part of an outer peripheral surface of the bearing housing, a stator accommodated in the casing, a rotor, a cover configured to cover an opening formed at a lower end of a tubular part of the casing, and a resin part configured to cover the stator in a space surrounded by the bearing housing, the casing, and the cover. The cover includes a base in an annular shape and a bush disposed radially inside the base and fixed to a lower end part of the outer peripheral surface of the bearing housing.

Abstract: A stator assembly includes a stator that opposes a rotor, which rotates about a central axis extending vertically, in a radial direction, a cover that accommodates an axially upper portion of the stator, a base portion that covers at least an axially lower side of the stator, and a circuit board that opposes the base portion in an axial direction and includes a sensor. At least one of the cover and the base portion includes a positioning portion, which is adjacent to the circuit board in the axial direction, the positioning portion being adjacent to the sensor.

Abstract: An axial fan includes a housing, an upper motor, and a lower motor. The housing includes an upper housing and a lower housing. A lower peripheral wall of the lower housing includes first engaging portions and lower protruding pieces. The lower protruding pieces oppose the first engaging portions in an axial direction and protrude axially upward from an axially upper surface. An upper peripheral wall of the upper housing includes upper engaging claws and upper notch grooves. The upper engaging claws extend axially downward from an axially lower surface, and include a second engaging portion that engages with the first engaging portion in a lower end portion. The upper notch grooves are notched axially upward from the axially lower surface radially inward of the upper engaging claw. At least a portion of the lower protruding pieces is located in the upper notch grooves.

Abstract: An image recognition device includes: an image processing device that acquires a feature amount from an image; and an identification device that determines whether a prescribed identification object is present in the image, and identifies the identification object. The identification device includes a BNN that has learned the identification object in advance, and performs identification processing by performing a binary calculation with the BNN on the feature amount acquired by the image processing device. Then, the identification device selects a portion effective for identification from among high-dimensional feature amounts output by the image processing device to reduce the dimensions used in identification processing, and copies low-dimensional feature amounts output by the image processing device to increase dimensions.

Abstract: A serial axial fan includes a first axial fan, a second axial fan, and a rectifying portion. The second axial fan is on one side in the axial direction with respect to the first axial fan and is connected in series to the first axial fan with the rectifying portion interposed therebetween. The rectifying portion includes a chassis with a cylindrical shape surrounding the central axis, a rectifying blade portion extending to a radially inner side from a radially inner surface of the chassis, and an air feeding space on the radially inner side of the rectifying blade portion. The rectifying blade portion extends at least in the axial direction and is inclined relative to another side in the circumferential direction from another side in the axial direction toward the one side in the axial direction.

Abstract: An axial fan includes a housing, an upper motor, and a lower motor. The housing includes an upper housing and a lower housing. A lower peripheral wall of the lower housing includes first engaging portions and lower protruding pieces. The lower protruding pieces oppose the first engaging portions in an axial direction and protrude axially upward from an axially upper surface. An upper peripheral wall of the upper housing includes upper engaging claws and upper notch grooves. The upper engaging claws extend axially downward from an axially lower surface, and include a second engaging portion that engages with the first engaging portion in a lower end portion. The upper notch grooves are notched axially upward from the axially lower surface radially inward of the upper engaging claw. At least a portion of the lower protruding pieces is located in the upper notch grooves.

Abstract: An axial fan includes a rotor, a rotor blade, a stator, and a housing. The housing includes a stator holder made of metal, a base made of metal and widened outwardly in a radial direction from a lower end portion of the stator holder, a rib extending outwardly in the radial direction from the base, and a housing cylinder connected to a radial-directional outer end portion of the rib. The housing cylinder extends in an axial direction and accommodates the rotor blade therein. A wind tunnel space in which air flows is provided between the base and the housing cylinder in the radial direction. A radial-directional outer side surface of the base is exposed in the wind tunnel space.

Abstract: A motor includes a stator unit and a rotor rotatable relative to the stator unit. The stator unit includes a stator, a resin portion, a support portion, and an annular recess. The stator includes a stator core, an insulator, and a conducting wire wound around the stator core with the insulator interposed therebetween. The resin portion covers at least part of the stator. The support portion supports the stator. At an end portion of the stator unit on one side in an axial direction, the recess is recessed toward another side in the axial direction. The resin portion is positioned further in a radially outer direction than the recess. The rotor includes an annular projection extending toward the other side in the axial direction. At least part of the projection is accommodated in the recess.

Abstract: A stator assembly includes a stator that drives a rotor rotatable about a central axis extending in a vertical direction, a cover that accommodates the stator, a filling portion that fills a space between the cover and the stator. The cover includes a tubular portion that extends in an axial direction and covers a radially side portion of the stator opposing the rotor in a radial direction, a lid portion that covers an axially upper end portion of the stator, and a cover stepped portion that is provided on a first radial side with respect to the tubular portion. The cover stepped portion comes in contact with the axially upper end portion of the stator and is positioned on an axially lower side with respect to an axially upper end portion of the tubular portion.

Abstract: A stator assembly includes a stator that drives a rotor that is rotatable about a central axis extending in a vertical direction, a stator support that supports the stator, and a filling portion that covers the stator. A first radial end portion of the stator is fixed to a second radial side surface of the stator support. An insulator of the stator includes an upper insulator covering an upper surface of a stator core. A first radial end portion of the upper insulator contacts the second radial side surface of the tubular stator support extending in an axial direction. An annular insulator concave portion that is recessed to the axial upper side is provided in the first radial end portion of the upper insulator. A first space, surrounded by the insulator concave portion, the stator core, and the stator support, is filled with a filling material.