Abstract: A cartridge includes a casing and a photosensitive drum rotatably supported by the casing. A coupling member is operatively connected to the photosensitive drum, with the coupling member being rotatable about a rotational axis thereof. The coupling member includes (i) a cylindrical portion, (ii) a first projection at least partially positioned inside of the cylindrical portion, (iii) a second projection at least partially positioned inside of the cylindrical portion, and (iv) an aligner at least partially positioned inside of the cylindrical portion, the aligner including a surface that faces the rotational axis. A distance between at least one of the first and second projections and the aligner is changeable.

Abstract: A cartridge includes a casing and a photosensitive drum rotatably supported by the casing, with the photosensitive drum having a first end and a second end. A coupling member is provided adjacent to the first end of the photosensitive drum, with the coupling member being operatively connected to the photosensitive drum. The coupling member includes (i) a cylindrical portion, (ii) a first projection at least partially positioned inside of the cylindrical portion, (iii) a second projection at least partially positioned inside of the cylindrical portion, (iv) an elastically movable projection at least partially positioned inside of the cylindrical portion, and (v) a wall extending in a direction perpendicular to the rotational axis and positioned between the second end of the photosensitive drum and the first and second projections.

Abstract: To achieve reliable electrical connection, a width of a ring shape portion becomes narrower toward a side closer to a compression spring portion in an axis direction of the compression spring portion, and an end portion of a winding start portion is located closer to a second end portion of the ring shape portion on a side opposite to the compression spring portion.

Abstract: A cartridge includes a rotatable member configured to carry toner on a surface and a coupling member operatively connected to the rotatable member. The coupling member is rotatable about a rotational axis thereof, and the coupling member includes an extended portion that is movable in a direction perpendicular to the rotational axis, and a projection projecting from the extended portion, with the extended portion extending in a direction crossing a projecting direction of the projection. The extended portion extends downstream in a rotational direction of the coupling member toward the projection.

Abstract: A drum unit for a cartridge includes a photosensitive drum and a coupling member rotatable about a rotational axis thereof, the coupling member being operatively connected to the photosensitive drum. The coupling member includes a movable extended portion that extends in a first direction, and a projection projecting from the extended portion in a second direction that crosses the first direction, the projection being capable of transmitting a driving force to the photosensitive drum. At least a part of the projection is positioned inside of the photosensitive drum.

Abstract: A cartridge includes a photosensitive drum and a coupling member operatively connected to the photosensitive drum, with the coupling member including an arm portion and a projection projecting from the arm portion. The arm portion of the coupling member extends from a point that is upstream in the rotational direction of the photosensitive drum towards a point that is downstream in the rotation direction of the photosensitive drum.

Abstract: A drum unit for a cartridge includes a cylindrical photosensitive drum having an axis L1, and a coupling member operatively connected to the photosensitive drum. The coupling member includes a drum flange provided at an end of the photosensitive drum with a part of the drum flange being positioned inside of the photosensitive drum. The drum unit also includes a connecting part operatively connected to the drum flange, with the connecting part including a cap positioned adjacent to the drum flange, an arm portion extending from the cap in a direction of the axis L1, and a projection projecting from the arm portion in a direction perpendicular to the axis L1. The arm and the projection are movable relative to the drum flange and the cap.

Abstract: A process cartridge includes a photosensitive drum and a coupling member operatively connected to the photosensitive drum, with the coupling member including an arm portion and a projection projecting from the arm portion. The arm portion of the coupling member extends from a point that is upstream in the rotational direction of the photosensitive drum towards a point that is downstream in the rotation direction of the photosensitive drum.

Abstract: A drum unit for a cartridge includes a photosensitive drum and a coupling member having a rotational axis, with the coupling member being operatively connected to the photosensitive drum. The coupling member includes a cylindrical portion having an outer surface and an inner surface that extends about the rotational axis of the coupling member, an arm portion extending from the inner surface of the cylindrical portion, and a projection projecting from the arm portion in a direction toward the rotational axis of the coupling member. The arm portion and the projection are movable relative to the inner surface.

Abstract: A drum unit for a cartridge includes a cylindrical photosensitive drum having an axis L1 and a coupling member operatively connected to the photosensitive drum. The coupling member includes a drum flange provided at an end of the photosensitive drum, with a part of the drum flange being positioned inside of the photosensitive drum, and a connecting part operatively connected to the drum flange. The connecting part includes a cap positioned adjacent to the drum flange, an arm portion extending from the cap in a direction of the axis L1, and a projection projecting from the arm portion in a direction perpendicular to the axis L1, with the projection being movable between a first position and a second position, and with an end of the projection being closer to the axis L1 in the first position than in the second position.

Abstract: A drum unit for a cartridge includes a photosensitive drum and a coupling member provided adjacent to an end of the photosensitive drum. The coupling member includes an arm portion, and a projection projected from the arm portion in a direction towards a rotational axis of the coupling member, with a part of the projection inclined relative to the rotational axis of the coupling member. The arm portion extends in a circumferential direction of the coupling member, and, as measured in a direction perpendicular to the rotational axis of the coupling member, a distance between the inclined part of the projection and the rotational axis of the coupling member increases as the distance in the direction of the rotational axis of the coupling member to another end of the photosensitive drum decreases.

Abstract: A Process cartridge includes a photosensitive drum and a coupling member operatively connected to the photosensitive drum, with the coupling member including an arm portion and a projection projecting from the arm portion, the arm portion being capable of transmitting driving force from the projection towards the photosensitive drum. The arm portion of the coupling member extends from a point that is upstream in the rotational direction of the photosensitive drum towards a point that is downstream in the rotation direction of the photosensitive drum.

Abstract: A drum unit for a cartridge includes a cylindrical photosensitive drum having an axis L1 and a coupling member operatively connected to the photosensitive drum. The coupling member includes a first member having a cylindrical portion, a part of the first member being positioned inside of the photosensitive drum and a part of the first member being positioned outside of the photosensitive drum. The coupling member also includes a second member operatively connected to first member, the second member including a plurality of arm portions that are movable relative to the first member, with at least a part of each of the arm portions being positioned inside of the photosensitive drum and inside of the first member.

Abstract: A process cartridge includes a photosensitive drum, a developing roller configured to develop a latent image on the photosensitive drum with toner, and a coupling member having a rotational axis, with the coupling member being operatively connected to the photosensitive drum. The coupling member includes a cylindrical portion having an outer surface and an inner surface that extends about the rotational axis of the coupling member, an arm portion extending from the inner surface of the cylindrical portion, and a projection projecting from the arm portion in a direction toward the rotational axis of the coupling member. The arm portion and the projection are movable relative to the inner surface.

Abstract: An image forming apparatus including a facing portion provided at a position facing a surface of an image bearing member that corresponds to a portion between a transfer unit and a cleaning unit, wherein a first space for conveying the recording material from the transfer unit to the fixing unit, and a second space between the surface of the image bearing member and the facing portion are formed in the image forming apparatus, and wherein the image forming apparatus includes a block member positioned in the second space and having one end side fixed to the facing portion on a side closer to the first space, the block member being configured to block a flow of an air current, the block member having the other end side in contact with the image bearing member.

Abstract: Illumination light is continuously emitted and auxiliary measurement light is emitted in the form of a pulse at a specific frame interval. A subject illuminated with illumination light is imaged to obtain a first taken image. A subject illuminated with illumination light and auxiliary measurement light is imaged to obtain a second taken image. A specific image where a measurement marker obtained from the second taken image is displayed in the first taken image is displayed on a display unit.

Abstract: An image forming apparatus includes a mounting unit configured to mount a development unit including a developing member, a pressing member configured to press the development unit mounted on the mounting unit to separate the developing member from a photosensitive member or bring the developing member into contact with the photosensitive member, and an urging member configured to urge the pressing member, wherein, when mounting the development unit on the mounting unit, the development unit moves in a first direction from the pressing member toward the development unit, parallel to a direction in which the pressing member and the development unit are arranged side by side, wherein the pressing member is movable in the first direction, and wherein the urging member urges the pressing member to move the pressing member in the first direction.

Abstract: A sheet conveyance apparatus includes a conveyance portion to convey a sheet in a sheet conveyance direction, and a moving member having a main body portion, a contact portion configured to come into contact with the sheet conveyed by the conveyance portion, and a shaft portion provided on the main body portion, with the moving member configured to be moved due to the contact portion contacting the sheet. A first support portion pivotably supports a first part of the shaft portion such that the moving member is configured to pivot around the shaft, and a second support portion pivotably and slidably supports a second part of the shaft portion such that the second part of the shaft portion swings around the first part. In addition, a biasing member biases the moving member, and a sensor transmits a signal according to a position of the moving member.