Abstract: A charging device includes a first cleaning member that cleans a surface of a charging wire by moving along the wire while being in contact with the wire at a first side; and a second cleaning member that cleans the surface of the wire by moving while being in contact with the wire at a second side, and moving relative to the first cleaning member in a crossing direction that crosses a wire length direction.

Abstract: A charging device includes a first cleaning member that cleans a surface of a charging wire by moving along the wire while being in contact with the wire at a first side; and a second cleaning member that cleans the surface of the wire by moving while being in contact with the wire at a second side, and moving relative to the first cleaning member in a crossing direction that crosses a wire length direction.

Abstract: A charging device includes an electrode, a cleaning member that moves along the electrode and cleans the electrode, a rotating member that is disposed along the electrode, includes a spiral protruding portion on an outer circumferential surface thereof, and circumferentially rotates, and a movable member to which the cleaning member is attached. The movable member includes a first through hole through which the rotating member passes, a first pressed portion that is provided on an inner circumferential surface of the first through hole and pressed by the protruding portion of the rotating member, and a second pressed portion that is disposed at a different position from a position of the first pressed portion in an axial direction of the rotating member and that is disposed such that one or more turns of the protruding portion are positioned between the second pressed portion and the first pressed portion.

Abstract: A charging device includes a first cleaning member, a first electrode, a second cleaning member, a second electrode, and a movable body. The first cleaning member moves in one direction. The first electrode is cleaned by the first cleaning member moving in the one direction. The second cleaning member moves in the one direction together with the first cleaning member and moves so that a downstream end portion thereof, which is located downstream in the one direction, serves as a leading portion and an upstream end portion thereof comes after the downstream end portion. The second electrode includes a first region and a second region. The first region is cleaned by the second cleaning member moving in the one direction. The second region is located downstream in comparison with the first region in the one direction.

Abstract: A charging device includes: an electrode; a cleaning member that cleans the electrode; a moving body that moves along the electrode, the cleaning member that is attached to the moving body; and a rotation member that is disposed along the electrode and that includes a spiral protrusion on an outer circumferential surface thereof to move the moving body, the rotation member that is rotated in a circumferential direction. A plurality of kinds of pitch intervals of the protrusion are provided on at least a central portion of the rotation member in a longitudinal direction.

Abstract: A charging device includes: an electrode; a cleaning member that cleans the electrode; a moving body that moves along the electrode, the cleaning member that is attached to the moving body; and a rotation member that is disposed along the electrode and that includes a spiral protrusion on an outer circumferential surface thereof to move the moving body, the rotation member that is rotated in a circumferential direction. A plurality of kinds of pitch intervals of the protrusion are provided on at least a central portion of the rotation member in a longitudinal direction.

Abstract: A charging device includes a first cleaning member, a first electrode, a second cleaning member, a second electrode, and a movable body. The first cleaning member moves in one direction. The first electrode is cleaned by the first cleaning member moving in the one direction. The second cleaning member moves in the one direction together with the first cleaning member and moves so that a downstream end portion thereof, which is located downstream in the one direction, serves as a leading portion and an upstream end portion thereof comes after the downstream end portion. The second electrode includes a first region and a second region. The first region is cleaned by the second cleaning member moving in the one direction. The second region is located downstream in comparison with the first region in the one direction.

Abstract: A charging device includes an electrode, a cleaning member that moves along the electrode and cleans the electrode, a rotating member that is disposed along the electrode, includes a spiral protruding portion on an outer circumferential surface thereof, and circumferentially rotates, and a movable member to which the cleaning member is attached. The movable member includes a first through hole through which the rotating member passes, a first pressed portion that is provided on an inner circumferential surface of the first through hole and pressed by the protruding portion of the rotating member, and a second pressed portion that is disposed at a different position from a position of the first pressed portion in an axial direction of the rotating member and that is disposed such that one or more turns of the protruding portion are positioned between the second pressed portion and the first pressed portion.

Abstract: There is provided a cleaning device including: a cleaning member disposed that cleans the discharge member; a guide member disposed along the length direction of the discharge member and guides the cleaning member in the length direction of the discharge member; and a drive device which, when executing a cleaning operation where the drive device reciprocally moves the cleaning member along the guide member from a standby position set on one length direction end portion of the discharge member or a return operation where the drive device returns the cleaning member along the guide member to the standby position, applies to the cleaning member a driving force in an opposite direction of a moving direction in which movement of the cleaning member is to be started and thereafter applies to the cleaning member a driving force in the moving direction.

Abstract: There is provided a cleaning device including: a cleaning member disposed that cleans the discharge member; a guide member disposed along the length direction of the discharge member and guides the cleaning member in the length direction of the discharge member; and a drive device which, when executing a cleaning operation where the drive device reciprocally moves the cleaning member along the guide member from a standby position set on one length direction end portion of the discharge member or a return operation where the drive device returns the cleaning member along the guide member to the standby position, applies to the cleaning member a driving force in an opposite direction of a moving direction in which movement of the cleaning member is to be started and thereafter applies to the cleaning member a driving force in the moving direction.

Abstract: A discharger includes: a discharge electrode member that is placed opposedly to a member to be charged; an opposed electrode member that is placed opposedly to the discharge electrode member; and a power source circuit that applies a discharge voltage for generating a discharge between the discharge electrode member and the opposed electrode member, and the electrode member having a surface that includes a covered layer covered by a covering material is formed on a surface opposed thereto, and the covering material containing a carbon atom, or a carbon atom and another atom or other plural atoms as a main component, and having an SP3 structure by a carbon atom.

Abstract: A cleaning device is provided and includes: three or more cleaning members for cleaning a wire member, the three or more cleaning members being separately disposed along a longitudinal direction of the wire member and including a pair of side cleaning members and an intermediate cleaning member, the intermediate cleaning member being disposed opposite to the pair of side cleaning members with respect to the wire member and disposed between the side cleaning members in the longitudinal direction of the wire member; a mechanism that moves at least one of the cleaning members so as to contact all of the cleaning members with the wire member or separate all of the cleaning members from the wire member; and a mechanism that moves all of the cleaning members along the longitudinal direction of the wire member in a state where all of the cleaning members are contacted with the wire member.

Abstract: A discharger includes: a discharge electrode member that is placed opposedly to a member to be charged; an opposed electrode member that is placed opposedly to the discharge electrode member; and a power source circuit that applies a discharge voltage for generating a discharge between the discharge electrode member and the opposed electrode member, and the electrode member having a surface that includes a covered layer covered by a covering material is formed on a surface opposed thereto, and the covering material containing a carbon atom, or a carbon atom and another atom or other plural atoms as a main component, and having an SP3 structure by a carbon atom.

Abstract: A cleaning device is provided and includes: three or more cleaning members for cleaning a wire member, the three or more cleaning members being separately disposed along a longitudinal direction of the wire member and including a pair of side cleaning members and an intermediate cleaning member, the intermediate cleaning member being disposed opposite to the pair of side cleaning members with respect to the wire member and disposed between the side cleaning members in the longitudinal direction of the wire member; a mechanism that moves at least one of the cleaning members so as to contact all of the cleaning members with the wire member or separate all of the cleaning members from the wire member; and a mechanism that moves all of the cleaning members along the longitudinal direction of the wire member in a state where all of the cleaning members are contacted with the wire member.

Abstract: In order to solve the problem, there is provided a charging device having: a roll-like charging member disposed in contact with a surface of a member to be charged and for charging the surface of the member to be charged; wherein: the charging member includes a conductive substrate, and at least an elastic layer and a surface layer applied sequentially onto a surface of the conductive substrate; and opposite end portions of the surface layer axially project beyond opposite end portions of the elastic layer respectively, while the opposite end portions of the surface layer are made to cover the elastic layer and made open.

Abstract: In order to solve the problem, there is provided a charging device having: a roll-like charging member disposed in contact with a surface of a member to be charged and for charging the surface of the member to be charged; wherein: the charging member includes a conductive substrate, and at least an elastic layer and a surface layer applied sequentially onto a surface of the conductive substrate; and opposite end portions of the surface layer axially project beyond opposite end portions of the elastic layer respectively, while the opposite end portions of the surface layer are made to cover the elastic layer and made open.