Abstract: A developer accommodating container for accommodating a developer for image formation, includes a first flexible member having a three-dimensional shape; a second flexible member for forming a space for accommodating the developer by covering a part of the first flexible member; wherein the developer accommodating container is constituted by bonding the first flexible member and the second flexible member to each other, and an injection opening, provided between the first flexible member and the second flexible member, for permitting injection of the developer into the developer accommodating container. An adjacent side, which is one of sides constituting an outer configuration of the three-dimensional shape and which is adjacent to the injection opening, has an angle of less than 90 degrees with respect to an injection direction of the developer at the injection opening.

Abstract: A fixing portion 18c for suppressing movement of a developer bag 16 when the developer bag 16 is unsealed by moving a sealing member 19 is provided. By this, unsealing becomes easy.

Abstract: A developer container configured to contain developer to be used for image formation, includes a first electrode provided in the developer container, a second electrode provided opposing to the first electrode configured to detect an electrostatic capacitance between the first electrode and the second electrode, to detect a quantity of the developer, a conveyance member provided between the first electrode and the second electrode and on a bottom surface side inside the developer container, and configured to convey the developer contained in the developer container, and a vibration imparting member configured to impart vibration to the conveyance member, wherein the developer on a developer conveyance surface of the conveyance member contacting the developer is conveyed by the vibration of the conveyance member.

Abstract: A developing unit includes: a frame; a flexible container, provided inside the frame, for accommodating a developer, wherein the flexible container includes an opening for permitting discharge of the developer; an urging member, provided inside the frame, for urging the flexible container to deform the flexible container; and a developer carrying member for carrying the developer discharged from the opening of the flexible container. The flexible container includes a projected portion projecting toward an outside of the flexible container. The projected portion is moved depending on deformation of the flexible container, by urging of the flexible container, to stir the developer discharged from the opening.

Abstract: A developer accommodating unit for accommodating a developer includes: a flexible container provided with a plurality of openings for permitting discharge of developer. The openings are formed and arranged in a longitudinal direction of the developer accommodating unit. The openings have opening areas such that with respect to the longitudinal direction, the opening area of the opening provided at an end portion is larger than the opening area of the opening provided at a central portion.

Abstract: A developer container configured to contain developer to be used for image formation, includes a first electrode provided in the developer container, a second electrode provided opposing to the first electrode configured to detect an electrostatic capacitance between the first electrode and the second electrode, to detect a quantity of the developer, a conveyance member provided between the first electrode and the second electrode and on a bottom surface side inside the developer container, and configured to convey the developer contained in the developer container, and a vibration imparting member configured to impart vibration to the conveyance member, wherein the developer on a developer conveyance surface of the conveyance member contacting the developer is conveyed by the vibration of the conveyance member.

Abstract: A developer accommodating unit includes: a flexible container including an opening for permitting discharge of a developer; a sealing member for forming a bonding portion between itself and the flexible container; an unsealing member; and an accommodating container. The bonding portion includes a first bonding portion extending in a longitudinal direction of the sealing member at a periphery of the opening in an upstream side of a peeling direction of the sealing member, a second bonding portion extending in the longitudinal direction at the periphery of the opening in a downstream side of the peeling direction, and a third bonding portion bonded upstream of the first bonding portion with respect to the peeling direction. When the sealing member exposes the opening, the bonding portion is peeled in the order of the third bonding portion, the first bonding portion and the second bonding portion.

Abstract: A developer accommodating unit includes: a developer bag in which a developer is incorporated. The developer bag includes: a filling port for filling the developer; a filling region where the developer is filled; a non-filling region, provided outside the filling region, where the developer is not filled, and a folded portion formed by folding the filling region and the non-filling region. The folded portion includes a welding portion.

Abstract: A fixing portion 18c for suppressing movement of a developer bag 16 when the developer bag 16 is unsealed by moving a sealing member 19 is provided. By this, unsealing becomes easy.

Abstract: A developer accommodating container includes: a flexible container provided with an opening for permitting discharge of a developer; a sealing member, mounted to the flexible container in a state in which the sealing member seals the opening, capable of exposing the opening by being wound up; an unsealing member for winding up the sealing member by being rotated to expose the opening; a frame for accommodating the unsealing member; and a limiting portion for limiting deformation of the unsealing member with respect to a direction of a force applied from the sealing member to the unsealing member when the unsealing member winds up the sealing member.

Abstract: A developing device includes a developer bearing member, a developer regulating member, and a space ensuring member. The space ensuring member includes a maintaining unit configured to maintain the space between the image bearing member and the developer bearing member, a rotation regulating portion configured to prevent the space ensuring member from moving, and a cover portion disposed to be not in contact with a surface of the developer bearing member and configured to cover a part of the developer bearing member. The cover portion is configured to cover at least part of an area in which the developer bearing member faces the image bearing member in a rotational direction of the developer bearing member, the area being on an outer side than an end portion of the developer regulating member in a longitudinal direction of the developer bearing member.

Abstract: A developer accommodating unit for accommodating a developer includes: an accommodating portion, provided with an opening, for accommodating the developer; a sealing member for sealing the opening; and an unsealing member rotatable for winding up the sealing member. The sealing member is peelable off from the accommodating portion to unseal the opening in a first unsealing direction and a second unsealing direction opposite to the first unsealing direction.

Abstract: A developer accommodating container for accommodating a developer includes a developer bag 16 provided with an injection port for permitting entrance of the developer and an opening 35a for permitting discharge of the developer and includes a sealing member 19 which includes a bonded portion bonded to the developer bag 16 so as to seal the opening and which is capable of exposing the opening by peeling the bonded portion from the developer bag 16 by being moved, and the sealing member includes a first bonded portion 22a in an upstream side of the opening and a second bonded portion 22b in a downstream side of the opening with respect to a sealing member unsealing direction, the first bonded portion and the second bonded portion interposing the opening, and the second bonded portion is provided in a non-contact position with the opening.

Abstract: A developer accommodating unit for accommodating a developer includes a flexible container, provided with an opening for permitting discharge of the developer, for accommodating the developer, and a frame. The flexible container is provided with a fastening hole for fastening said flexible container in said frame. The frame includes a fixing shaft portion fixed in the fastening hole by being inserted into the fastening hole, and includes a retaining portion for preventing the fixing shaft portion from being disengaged from the fastening hole. The fastening hole is locked by fitting the fastening hole around the fixing shaft portion while an edge of the fastening hole rides over the retaining portion by elastic deformation thereof.

Abstract: A developer accommodating unit includes: a developer bag in which a developer is incorporated. The developer bag includes: a filling port for filling the developer; a filling region where the developer is filled; a non-filling region, provided outside the filling region, where the developer is not filled, and a folded portion formed by folding the filling region and the non-filling region. The folded portion includes a welding portion.

Abstract: A developing device includes a developer carrying member that carries developer; a frame member that supports the developer carrying member; a sealing section that faces a peripheral surface of the developer carrying member and suppresses leakage of the developer; and an interval ensuring member that maintains a distance between the image carrying member and the developer carrying member. The interval ensuring member includes a movement regulating portion that prevents movement of the interval ensuring member in a rotation direction of the developer carrying member when the image carrying member and the developer carrying member rotate, and a maintaining portion that contacts the image carrying member and the developer carrying member for maintaining the distance between the image carrying member and the developer carrying member. The maintaining portion and the sealing section are positioned in a predetermined cross section that is orthogonal to an axial line of the developer carrying member.

Abstract: A developing device includes a developer bearing member, a developer regulating member, and a space ensuring member. The space ensuring member includes a maintaining unit configured to maintain the space between the image bearing member and the developer bearing member, a rotation regulating portion configured to prevent the space ensuring member from moving, and a cover portion disposed to be not in contact with a surface of the developer bearing member and configured to cover a part of the developer bearing member. The cover portion is configured to cover at least part of an area in which the developer bearing member faces the image bearing member in a rotational direction of the developer bearing member, the area being on an outer side than an end portion of the developer regulating member in a longitudinal direction of the developer bearing member.

Abstract: A powder feeding mechanism includes: a feeding member, provided under powder, for feeding the powder; and a vibration applying member for applying reciprocating acceleration to the feeding member in a feeding surface direction along a powder feeding surface of the feeding member. Maximum acceleration applied from the vibration applying member to the feeding member in a powder feeding direction is smaller than maximum acceleration applied from the vibration applying member to the feeding member in a direction opposite to the powder feeding direction to feed the powder in the powder feeding direction by the feeding member.

Abstract: A developer accommodating unit for accommodating a developer includes: an accommodating portion, provided with an opening, for accommodating the developer; a sealing member for sealing the opening; and an unsealing member rotatable for winding up the sealing member. The sealing member is peelable off from the accommodating portion to unseal the opening in a first unsealing direction and a second unsealing direction opposite to the first unsealing direction.

Abstract: A developing device includes a developer carrying member that carries developer; a frame member that supports the developer carrying member; a sealing section that faces a peripheral surface of the developer carrying member and suppresses leakage of the developer; and an interval ensuring member that maintains a distance between the image carrying member and the developer carrying member. The interval ensuring member includes a movement regulating portion that prevents movement of the interval ensuring member in a rotation direction of the developer carrying member when the image carrying member and the developer carrying member rotate, and a maintaining portion that contacts the image carrying member and the developer carrying member for maintaining the distance between the image carrying member and the developer carrying member. The maintaining portion and the sealing section are positioned in a predetermined cross section that is orthogonal to an axial line of the developer carrying member.