Abstract: To provide a waterproof structure for an electric motor that simultaneously achieves electrical connection between a power connector and a wiring substrate, an earth connection between the power connector and a stator, and sealing between the power connector and the stator. A power connector (6) includes a sealing member (7) that seals between the power connector (6) and a stator (2), a wiring substrate (5) and the power connector (6) include connector connecting parts (53, 63), and the stator (2) and the power connector 6 include earth connecting parts (34, 64).

Abstract: To provide a motor with a wiring board achieving simplification of work and suitable for automation of the work. A motor provided herein includes a wiring board attached to a stator with multiple wound coils. The wiring board comprises: a wiring settlement member where ends of the multiple coils are housed in their settled positions; and a circuit board with multiple terminals provided at positions corresponding to positions of the wiring settlement member where the coils are housed. The ends of the coils are connected under pressure to the terminals to form connections between the coils and the terminals by attaching the circuit board to the wiring settlement member.

Abstract: To provide an insulating component of a motor formed of a single component capable of ensuring insulating properties. An insulating component (2) forms a motor that comprises a stator (1), a stator housing (4) attached to the stator (1), multiple windings (14) arranged in the stator (1), and a wiring board (3) arranged at one end of the stator (1) in an axis direction of the stator (1) and used for wiring of the windings (14). The insulating component (2) comprises: a first insulating wall (21) arranged between adjacent ones of the windings (14) of different phases and electrically insulating the adjacent windings (14); and a second insulating wall (22) arranged between the windings (14) and the wiring board (3) and electrically insulating the windings (14) and the wiring board (3).

Abstract: To provide a stator of a motor having an insulating structure achieving insulation easily and reliably.

Abstract: To provide a motor with a wiring board achieving simplification of work and having low probability of contact failure. In a motor with a wiring board provided herein, the wiring board is attached to a stator with multiple wound coils. The wiring board comprises: a circuit board attached to the stator; and multiple crimp terminals arranged on an end face of the circuit board and allowing crimping of ends of the coils. The wiring board (5) is configured in such a manner that the ends extending along the end face of the circuit board are crimped on the crimp terminals, and the crimped ends can be bent to postures along a surface of the circuit board.

Abstract: To provide an insulating component of a motor formed of a single component capable of ensuring insulating properties. An insulating component (2) forms a motor that comprises a stator (1), a stator housing (4) attached to the stator (1), multiple windings (14) arranged in the stator (1), and a wiring board (3) arranged at one end of the stator (1) in an axis direction of the stator (1) and used for wiring of the windings (14). The insulating component (2) comprises: a first insulating wall (21) arranged between adjacent ones of the windings (14) of different phases and electrically insulating the adjacent windings (14); and a second insulating wall (22) arranged between the windings (14) and the wiring board (3) and electrically insulating the windings (14) and the wiring board (3).

Abstract: To provide a motor with a wiring board achieving simplification of work and suitable for automation of the work. A motor provided herein includes a wiring board attached to a stator with multiple wound coils. The wiring board comprises: a wiring settlement member where ends of the multiple coils are housed in their settled positions; and a circuit board with multiple terminals provided at positions corresponding to positions of the wiring settlement member where the coils are housed. The ends of the coils are connected under pressure to the terminals to form connections between the coils and the terminals by attaching the circuit board to the wiring settlement member.

Abstract: To provide a waterproof structure for an electric motor that simultaneously achieves electrical connection between a power connector and a wiring substrate, an earth connection between the power connector and a stator, and sealing between the power connector and the stator. A power connector (6) includes a sealing member (7) that seals between the power connector (6) and a stator (2), a wiring substrate (5) and the power connector (6) include connector connecting parts (53, 63), and the stator (2) and the power connector 6 include earth connecting parts (34, 64).

Abstract: To provide a stator of a motor having an insulating structure achieving insulation easily and reliably.

Abstract: To provide a motor with a wiring board achieving simplification of work and having low probability of contact failure. In a motor with a wiring board provided herein, the wiring board is attached to a stator with multiple wound coils. The wiring board comprises: a circuit board attached to the stator; and multiple crimp terminals arranged on an end face of the circuit board and allowing crimping of ends of the coils. The wiring board (5) is configured in such a manner that the ends extending along the end face of the circuit board are crimped on the crimp terminals, and the crimped ends can be bent to postures along a surface of the circuit board.

Abstract: A developing device in an image forming apparatus includes: a first developer carrier that rotates in a same direction as a rotating direction of an image carrier of the image forming apparatus so as to supply developer to the image carrier; and a second developer carrier that rotates in a direction opposite to the rotating direction of the image carrier so as to supply the developer to the image carrier. The developing device simultaneously performs a refreshing operation of performing replacement of the developer and a filming removal operation of causing the image carrier to rotate idle while forming an image for use in the refreshing operation and causing the first and second developer carriers to rotate in their respective rotating directions.

Abstract: The disclosed image forming apparatus includes a rotatable image holding body configured to hold an electrostatic latent image on a surface of the image holding body, a developing device including a forward rotation developing roller rotatable in a same rotational direction as that of the rotatable image holding body and a reverse rotation developing roller rotatable in a reverse rotational direction to that of the rotatable image holding body, which supply a two-component developer to the surface of the image holding body to form a toner image corresponding to the electrostatic latent image, and a control unit configured to control rotation of the image holding body, the forward rotation developing roller, and the reverse rotation developing roller to supply the two-component developer. The control unit controls the rotation of the image holding body to start after a predetermined time period from starting the rotation of the forward rotation developing roller and the reverse rotation developing roller.

Abstract: A developing device in an image forming apparatus includes: a first developer carrier that rotates in a same direction as a rotating direction of an image carrier of the image forming apparatus so as to supply developer to the image carrier; and a second developer carrier that rotates in a direction opposite to the rotating direction of the image carrier so as to supply the developer to the image carrier. The developing device simultaneously performs a refreshing operation of performing replacement of the developer and a filming removal operation of causing the image carrier to rotate idle while forming an image for use in the refreshing operation and causing the first and second developer carriers to rotate in their respective rotating directions.

Abstract: The disclosed image forming apparatus includes a rotatable image holding body configured to hold an electrostatic latent image on a surface of the image holding body, a developing device including a forward rotation developing roller rotatable in a same rotational direction as that of the rotatable image holding body and a reverse rotation developing roller rotatable in a reverse rotational direction to that of the rotatable image holding body, which supply a two-component developer to the surface of the image holding body to form a toner image corresponding to the electrostatic latent image, and a control unit configured to control rotation of the image holding body, the forward rotation developing roller, and the reverse rotation developing roller to supply the two-component developer. The control unit controls the rotation of the image holding body to start after a predetermined time period from starting the rotation of the forward rotation developing roller and the reverse rotation developing roller.

Abstract: By providing a printing density controller for changing a printing density in a range from a dropout color to non-dropout color, an electrophotographic printing apparatus can conduct the light and shade adjustment of the printing density in a broad range, and also cope with the dropout color printing.

Abstract: When a developing agent prepared to have a preset toner density is loaded in a developing unit, a comparing reference level for controlling the toner density in the developing agent is changed to a value higher than the preset value in the initial stage of operation and fresh toner is supplied to the developing agent so that the toner density of the developing agent is increased in comparison to the reference level. Thereby, the developed density is prevented from decreasing due to an excess amount of friction charge of the toner.