Abstract: A developer accommodating unit includes: a flexible container, provided with an opening for permitting discharge of a developer, for accommodating the developer; a frame for accommodating the flexible container and for accommodating the developer discharged from the flexible container; and an urging member, provided inside the frame, for urging the flexible container to deform the flexible container. The flexible container has a plurality of sides, where the developer accommodated inside the flexible container receives gravitation, defined by a bent portion. The sides are capable of receiving an urging force of the urging member.

Abstract: A method of manufacturing a developer container including a frame configured to define a developer containing portion, a first electrode, and a second electrode arranged on a surface of the frame and having a surface opposed to the first electrode, a developer amount in the developer containing portion being detected based on a capacitance between the first electrode and the second electrode, the method including: holding a conductive resin member constituting the second electrode on a mold configured to mold the frame, a surface of the conductive resin member being in contact with a surface of the mold configured to mold a surface of the frame on a side of the developer containing portion; injecting a resin to be formed into the frame, into the mold on which the conductive resin member is held; and curing the resin to form the frame to which the second electrode is fixed.

Abstract: A developer accommodating unit includes: a flexible container, provided with an opening for permitting discharge of a developer, for accommodating the developer; a frame for accommodating the flexible container and for accommodating the developer discharged from the flexible container; and an urging member, provided inside the frame, for urging the flexible container to deform the flexible container. The flexible container has a plurality of sides, where the developer accommodated inside the flexible container receives gravitation, defined by a bent portion. The sides are capable of receiving an urging force of the urging member.

Abstract: A developer accommodating unit includes: a container, provided with an opening for permitting discharge of a developer, for accommodating the developer; a sealing member for sealing the opening by being mounted on the container and for being peeled from the container to expose the opening; and an unsealing member for unsealing the opening by moving the sealing member to peel the sealing member from the container. The sealing member includes a sealing portion defined in an end side thereof to seal the opening, a holding portion defined in another end side thereof to be held by the unsealing member, and a developer passing portion formed between the sealing portion and the holding portion to permit passing of the developer therethrough.