Abstract: An injection inlet for injecting elastomer into a gap between frames and a seal member, a storage portion in which the elastomer flowing out of the injection inlet is stored, and a protruding portion that protrudes toward a conveyance path of a recording medium to which a developer image is transferred, are provided in the frames, and the protruding portion protrudes toward the conveyance path further than the storage portion exposed to the conveyance path.

Abstract: Disclosed is a developing cartridge in which a developer bearing member moves when a pressed part is pressed by a press member provided in a main body of an apparatus to move a developing frame in a state in which the developing cartridge is attached to the main body of the apparatus. The pressed part is provided with a positioning part that contacts and positions the press member. The press member is urged toward the positioning part by an urging member. The developing frame has a guiding part that moves the press member against an urging force of the urging member when the developing cartridge is attached to the main body of the apparatus.

Abstract: A developing cartridge, to be used in an image forming apparatus in which the developing cartridge including a developer carrier and a drum cartridge including a photosensitive drum are attachable and detachable, includes a cartridge body including the developer carrier, first and second supporting members that support the cartridge body to be capable of turning, and a restricting member that restricts the turn of the cartridge body with respect to the first supporting member in the developing cartridge in which the first and second supporting members have been positioned in the body of the image forming apparatus and urging has been made possible in one direction in a turning direction of the cartridge body so that the developing roller is made capable of coming into contact with the photosensitive drum, when the developing cartridge has been attached to the image forming apparatus.

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: 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 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 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 developing cartridge includes: a flexible developer bag, provided with an opening and provided in a frame, for accommodating a developer; and an acting member contactable to the developer bag. The developer bag is fixed to the frame at its upper portion. The developer bag is swingable by contact with the acting member.

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 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 developer container includes: a developer accommodating chamber, provided with an opening, for accommodating a developer; a sealing member bonded to the developer accommodating container so as to block the opening; and a rotatable member, having a connecting surface where the sealing member is connected thereto, for peeling off the sealing member from the opening by rotation thereof. The connecting surface has a rectangular shape which has a long side with respect to a rotational axis direction of the rotatable member and which is twisted in a rotational direction of the rotatable member.

Abstract: A cartridge includes: a toner chamber, provided with an opening, for accommodating a toner; and a seal member including a sealing portion, elongated in a longitudinal direction of the cartridge, for unsealably sealing the opening and a mounting portion for being mounted on an unsealing member to unseal the opening. The sealing portion includes a first sealing portion located at a longitudinal end portion and a second sealing portion located at a longitudinal central portion. With respect to a direction crossing the longitudinal direction, a length between the first sealing portion and the mounting portion of the seal member is shorter than a length between the second sealing portion and the mounting portion.

Abstract: A developer container includes: a developer chamber, provided with an opening, for accommodating a developer; a rotatable member rotatably supported in the developer chamber; and a sealing member for being removed at the opening by being wound up by the rotatable member, wherein the sealing member is provided in the developer chamber and includes a first end portion connected to the rotatable member and a second end portion sealing the opening. Sealing of the opening is made by bonding the sealing member along an edge of the opening. The developer container includes a first bonding portion provided upstream of the opening and a second bonding portion provided downstream of the opening with respect to an unsealing direction of the sealing member. A peeling-off force for peeling off the sealing member at a predetermined angle is larger at the first bonding portion than at the second bonding portion.

Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus includes: a frame; a flexible developer bag, provided with an opening and provided inside the frame, for containing a developer; and an elastic member for discharging the developer through the opening by acting on the developer bag. The elastic member is extended from a free state by contact with the developer bag, and elastic energy accumulated by extension of the elastic member acts on the developer bag to discharge the developer through the opening.

Abstract: A cartridge includes: a toner chamber; and a toner supplying chamber for supplying a toner through a developer supply opening communicating with the toner chamber. The toner chamber includes: a feeding portion, including a rotatable member and a feeding sheet connected with the rotatable member, for feeding the toner from the toner chamber to the toner supplying chamber; and a toner seal member, including a first end portion and a second end portion, for unsealing the toner supply opening by being wound up by the rotatable member. During start of unsealing of the toner supply opening, the feeding portion is located below a powder surface of the toner with respect to a direction of gravitation, and the feeding sheet is located in a position where the feeding sheet is contactable to an inner wall of the toner chamber.

Abstract: A developing cartridge includes: a flexible developer bag, provided with an opening and provided in a frame, for accommodating a developer; and an acting member contactable to the developer bag. The developer bag is fixed to the frame at its upper portion. The developer bag is swingable by contact with the acting member.

Abstract: A developer container includes: a developer accommodating chamber, provided with an opening, for accommodating a developer; a sealing member including end portion sealing portions each for sealing an end portion of the opening and a central portion sealing portion for sealing a central portion of the opening; and a rotatable member, connected with the sealing member, for peeling off the sealing member from the opening by rotation thereof to expose the opening. With respect to a rotational axis direction of the rotatable member, an outer configuration of the rotatable member is different between a sealing-member-connected end thereof and a sealing-member-connected center thereof so that one of the end portion sealing portions is peeled earlier than the central portion sealing portion and so that the central portion is peeled earlier than the other one of the end portion sealing portions.

Abstract: A cartridge includes: a toner accommodating frame including a toner feeding opening communicating with a toner feeding chamber and a toner filling port; a rotatable member; and a toner seal member. The toner seal member includes a first fixed portion and a second fixed portion which are fixed on the toner accommodating frame at an edge of the toner feeding opening along a longitudinal direction of the toner feeding opening, and includes a third fixed portion fixed on the rotatable member. With rotation of the rotatable member, the first fixed portion of the toner seal member is peeled off from a fixing portion to open the toner feeding opening. The toner is filled into said toner accommodating frame through the toner filling port such that the toner is first filled into a recess defined by said toner seal member.

Abstract: A developer container includes: a developer accommodating chamber, provided with an opening, for accommodating a developer; a sealing member including end portion sealing portions each for sealing an end portion of the opening and a central portion sealing portion for sealing a central portion of the opening; and a rotatable member, connected with the sealing member, for peeling off the sealing member from the opening by rotation thereof to expose the opening. With respect to a rotational axis direction of the rotatable member, an outer configuration of the rotatable member is different between a sealing-member-connected end thereof and a sealing-member-connected center thereof so that one of the end portion sealing portions is peeled earlier than the central portion sealing portion and so that the central portion is peeled earlier than the other one of the end portion sealing portions.