Abstract: A main body includes a second movable member that is movable and that has a first recess portion. The second movable member is moved from a first position where a first projecting portion of a first cartridge can enter the first recess portion to a second position by a movement of the first projecting portion, thereby allowing a second cartridge to be moved to an attachment position of the main body. The second movable member also allows a third projecting portion of the second cartridge to enter the first recess portion at the first position. The second movable member is moved to the second position when the third projecting portion enters the first recess portion, thereby allowing the second cartridge to be moved to the attachment position.

Abstract: Provided are a drive force transmission member and control unit. The drive force transmission member has multiple first engaging portions. Drive force is transmitted from the drive force transmission member to a drive force receiving member with each first engaging portion engaged with a second engaging portion of the drive force receiving member. The second engaging portions are movable in a radial direction centered on a rotation axis line of the drive force transmission member. The control unit performs rotation control of forward rotation of the drive force transmission member by ?° and thereafter backward rotation by ?° after a cartridge is mounted to an apparatus main body but before image formation. Each of the multiple first engaging portions is upstream in the forward rotation direction of the drive force transmission member from the second engaging portion out of the multiple second engaging portions with which engaging will be realized.

Abstract: A support member that supports an elastic member constituted of an elastic body contacting the surface of an image bearing member has a first surface that extends in a rotation axis direction of the image bearing member, and a second surface that includes a normal vector, which intersects with a normal vector of the first surface, and extends in the rotation axis direction. In the rotation axis direction, the first surface is fixed to two fixed portions of the frame, and a first vibration absorbing member is disposed between the two fixed portions so as to contact the frame and the first surface.

Abstract: This invention concerns a cleaning unit which has a photosensitive body and a cleaning frame body supporting the photosensitive body, and which is attachable to and detachable from an apparatus main body of an image forming apparatus configured to form an image on a recording material. In the cleaning unit, which is installed in the apparatus main body so as to adjoin a developing unit including a developing roller that bears toner for developing an electrostatic image formed on the photosensitive body 1, engagement portions (bosses) are disposed on the cleaning frame body so as to protrude toward the developing unit side, and engage with engaged portions (insertion guide portions) disposed on the apparatus main body when the cleaning unit is attached to the apparatus main body.

Abstract: A technique enabling downsizing of an image forming apparatus is provided. A cleaning unit 13 attachable to and detachable from an apparatus main body of an image forming apparatus 100 that forms an image on a recording material 12 is provided, with this cleaning unit 13 including: a photosensitive drum 1; and a cleaning frame body 14 that supports the photosensitive drum 1 and that includes an opening 14c through which laser light 3c for exposing the photosensitive drum 1 can pass, wherein the opening 14c is configured such that a width of the opening 14c in a scanning direction in an irradiation range of the light for exposing the photosensitive drum 1 becomes greater toward a side of the photosensitive drum 1 from a side of a light source of light for exposing the photosensitive drum 1.

Abstract: A cartridge includes a photosensitive member, a discharge opening for discharging a developer removed from the photosensitive member, toward a loosening member provided in the main assembly of a apparatus; a vibration imparting member for imparting vibration to the loosening member. The vibration imparting member is movable between a first position for imparting the vibration to the loosening member and a second position retracted from the first position.

Abstract: A technique enabling downsizing of an image forming apparatus is provided. A cleaning unit 13 attachable to and detachable from an apparatus main body of an image forming apparatus 100 that forms an image on a recording material 12 is provided, with this cleaning unit 13 including: a photosensitive drum 1; and a cleaning frame body 14 that supports the photosensitive drum 1 and that includes an opening 14c through which laser light 3c for exposing the photosensitive drum 1 can pass, wherein the opening 14c is configured such that a width of the opening 14c in a scanning direction in an irradiation range of the light for exposing the photosensitive drum 1 becomes greater toward a side of the photosensitive drum 1 from a side of a light source of light for exposing the photosensitive drum 1.

Abstract: A control device includes a processor. The processor is configured to receive an execution request for write processing of writing data of logical volumes to second physical volumes. The data of the logical volumes is stored in first physical volumes. The processor is configured to generate write information on basis of data sizes of the respective logical volumes and free spaces of storage areas of the respective second physical volumes. The processor is configured to perform, on basis of the write information, control of writing first data of the logical volumes from a cache unit to the second physical volumes. The processor is configured to perform control of reading second data of the logical volumes from the first physical volumes to the cache unit. The processor is configured to optimize the write information in response to completion of the control of reading.

Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus includes a photosensitive drum; a discharging path for permitting movement of a developer removed from the drum, the discharging path including a developer discharge opening and a movable portion through which the developer is movable and which is movable between a retracted position in an upstream side with respect to a developer moving direction through the discharge opening and a advanced position in a downstream side with respect to the developer moving direction; and a sealing portion for closing the discharging path by contacting the movable portion at a position different from that of the discharge opening.

Abstract: An accommodating container includes: an accommodating chamber, provided with an opening, for accommodating a developer; a seal member for unsealably sealing the opening; and a rotatable member rotatably supported inside the accommodating chamber. The seal member includes a sealing portion for sealing the opening, a connecting portion connected with the rotatable member, and at least one hole provided between the sealing portion and the connecting portion. The rotatable member includes a shaft portion and at least one projection extending in a direction of being spaced from the shaft portion. The hole and the projection are provided to establish a non-overlapping positional relationship with respect to a direction along the shaft portion.

Abstract: A main body (100A) includes a second movable member (110A) that is movable and that has a first recess portion (123). The second movable member (110A) is moved from a first position where a first projecting portion (80a) of a first cartridge (70a) can enter a first recess portion (123) to a second position by a movement of the first projecting portion (80a), thereby allowing a second cartridge (70A) to be moved to an attachment position of the main body (100A). The second movable member (110A) also allows a third projecting portion (80A) of a second cartridge (70A) to enter the first recess portion (123) at the first position. The second movable member (110A) is moved to the second position when the third projecting portion (81A) enters the first recess portion (124), thereby allowing the second cartridge (70A) to be moved to the attachment position.

Abstract: Provided are a drive force transmission member and control unit. The drive force transmission member has multiple first engaging portions. Drive force is transmitted from the drive force transmission member to a drive force receiving member with each first engaging portion engaged with a second engaging portion of the drive force receiving member. The second engaging portions are movable in a radial direction centered on a rotation axis line of the drive force transmission member. The control unit performs rotation control of forward rotation of the drive force transmission member by ?° and thereafter backward rotation by ?° after a cartridge is mounted to an apparatus main body but before image formation. Each of the multiple first engaging portions is upstream in the forward rotation direction of the drive force transmission member from the second engaging portion out of the multiple second engaging portions with which engaging will be realized.

Abstract: A main body includes a second movable member that is movable and that has a first recess portion. The second movable member is moved from a first position where a first projecting portion of a first cartridge can enter the first recess portion to a second position by a movement of the first projecting portion, thereby allowing a second cartridge to be moved to an attachment position of the main body. The second movable member also allows a third projecting portion of the second cartridge to enter the first recess portion at the first position. The second movable member is moved to the second position when the third projecting portion enters the first recess portion, thereby allowing the second cartridge to be moved to the attachment position.

Abstract: A developer accommodating container for accommodating a developer includes: a toner seal member for unsealably sealing an opening of the developer accommodating container; an unsealing member, connected to an end portion of the toner seal member, for unsealing the opening by moving at least a part of the toner seal member; and an auxiliary unsealing member for assisting unsealing by changing a pulling direction of the toner seal member by the unsealing member. The auxiliary unsealing member includes a shaft portion or a projected portion. The shaft portion or the projected portion extends in a longitudinal direction of the developer accommodating container.

Abstract: A storage device includes: a plurality of first storage devices; a second storage device; and a control device to use the plurality of first storage devices as a primary storage and the second storage device as a secondary storage, control access processing to a plurality of logical volumes each of which indicates a virtual recording medium, register a logical volume for which a mount request is made within a predetermined period of time among the plurality of logical volumes in an management information as the logical volume which belongs to the same group, and allocate a storage area of the primary storage corresponding to each of a plurality of registered logical volumes which belong to a group registered in the management information to any one of the plurality of first storage devices such that an allocation destination of the storage area is distributed among the plurality of first storage devices.

Abstract: A support member that supports an elastic member constituted of an elastic body contacting the surface of an image bearing member has a first surface that extends in a rotation axis direction of the image bearing member, and a second surface that includes a normal vector, which intersects with a normal vector of the first surface, and extends in the rotation axis direction. In the rotation axis direction, the first surface is fixed to two fixed portions of the frame, and a first vibration absorbing member is disposed between the two fixed portions so as to contact the frame and the first surface.

Abstract: A developer feeding device includes a cleaning member contacted to an image bearing drum; a accommodating portion for the developer removed by the cleaning member; a feeding member for feeding the developer from the accommodating portion; a sheet contacted to the drum; and a guide forming a part of a wall surface of the accommodating portion at a position in a side of the sheet with respect to a line connecting a drum center and a feeding member center, as seen in a drum axis direction. The guide extends in a acute angle range formed between a first line extending vertically through the feeding member center and a second line extending in a direction of a rest angle of the developer through the feeding member center, the guide having a shape such as to approach to a linear shape as a distance of the feeding member decreases.

Abstract: A technique enabling downsizing of an image forming apparatus is provided. A cleaning unit 13 attachable to and detachable from an apparatus main body of an image forming apparatus 100 that forms an image on a recording material 12 is provided, with this cleaning unit 13 including: a photosensitive drum 1; and a cleaning frame body 14 that supports the photosensitive drum 1 and that includes an opening 14c through which laser light 3c for exposing the photosensitive drum 1 can pass, wherein the opening 14c is configured such that a width of the opening 14c in a scanning direction in an irradiation range of the light for exposing the photosensitive drum 1 becomes greater toward a side of the photosensitive drum 1 from a side of a light source of light for exposing the photosensitive drum 1.

Abstract: A rotational force is transmitted to a main assembly side feeding member for feeding the toner into a main assembly side toner accommodating portion from a coupling member provided on a cartridge. The cartridge includes a photosensitive drum, a discharge opening configured to discharge the toner removed from the photosensitive drum toward the main assembly side feeding member, and a coupling member configured to transmit the rotational force to the main assembly side feeding member. The coupling member is movable between a first position for transmitting the rotational force to the main assembly side feeding member and a second position retracted from the first position.