A developer container or a developing device including a sheet member having a plurality of holes and a plurality of protruded portions to be inserted into the holes.

A developer container includes a container, provided with an opening and configured to accommodate a developer; a sealing member configured to cover the opening; and an unsealing member configured to unseal the opening by moving the sealing member. The sealing member opposes the container at a central opposing portion positioned in a central side and at an end opposing portion positioned at an end side with respect to a longitudinal direction of the unsealing member. The sealing member and the container are bonded to each other at bonding portion which is at least a part of the central opposing portion. The bonding force at the bonding portion of the central opposing portion is larger than a bonding force between the sealing member and the container at the end opposing portion.

The invention provides devices and methods for remanufacturing toner printer cartridges and their components by reusing a seal for the toner opening port. The invention also provides devices and methods for remanufacturing a printer cartridge by resealing the toner opening port of the toner hopper. The invention also relates to devices and methods to install and replace seals on a toner hopper, refill toner in a toner hopper, replace a bag of toner in a toner hopper, and replace a chip for a toner cartridge. Also included are devices and methods of sealing a toner cartridge and reattaching a toner cartridge end cap to a waste hopper. A soft shell bottle suitable for use in a toner cartridge composed of a soft polymeric material is also provided.

A developer container or a developing device including a sheet member having a plurality of holes and a plurality of protruded portions to be inserted into the holes.

An operation guide label is made to perform a display urging a seal member for sealing a toner replenishment port of a toner container received in an image forming apparatus to be pulled out. The image forming apparatus has a first side surface provided with a power switch and a second side surface adjacent to the first side surface and provided with an opening and closing cover for toner container exchange. The seal member has a grasping part which protrudes from a surface of the toner container. The operation guide label includes a first label part adhered to the first side surface so as to cover at least a part of the power switch, a second label part adhered to a predetermined surface part on the side of the opening and closing cover in the image forming apparatus, and a connection part for connecting the both label.

Provided is an image forming apparatus including: first and second chambers communicating to each other; a first opening portion through which the developer is received from the first chamber to the second chamber; a second opening portion through which the developer is received from the second chamber to the first chamber; a conveyance member arranged in the first chamber and rotating in a first direction to convey the developer to the first opening portion; a sealing member sealing the first opening portion; a rotary member peeling the sealing member; a determination portion determining presence of uneven distribution in the first chamber under a state in which the sealing member seals; and a controller controlling rotation of the rotary member to rotate the conveyance member in a second direction reverse to the first direction before the peeling or in a course of the peeling when the uneven distribution is present.

A developer container includes a frame, provided with an opening, for accommodating a developer; a sealing member, including a folded-back portion, for sealing the opening; and a sandwiching portion for sandwiching the folded-back portion of the sealing member. In a plane perpendicular to the opening, the sealing member is nonwelded in the sandwiching portion.

A developer accommodating unit for accommodating a developer for image formation includes a flexible container provided with an opening 35a for permitting discharge of the developer, a frame for accommodating the flexible container and for accommodating the developer to be discharged from the flexible container, and an urging member 21 for urging a developer accommodating bag toward the frame for accommodating the developer accommodating bag 16. By this, it is possible to satisfactorily effect discharge of the developer from the flexible developer accommodating bag 16.

A developer container includes a container configured to store developer and capable of discharging the developer from an opening, a sealing member configured to seal the opening, an unsealing member, rotatably supported, configured to open the opening by removing the sealing member from the container, and a sheet member attached to an attachment portion of the unsealing member in a relative position where the sheet member is held between the sealing member and the unsealing member.

A developing device includes a first housing member, and a second housing member that is configured by combining a housing, in which a developer accommodation space accommodating a developer and a roll accommodation space accommodating a development roll are provided, and the first housing member with each other and that includes an integrated member obtained by integrally forming a frame-shaped seal attachment portion and an outer shell portion with each other, the seal attachment portion being a portion to which a seal member separating the developer accommodation space and the roll accommodation space from each other is attached, the outer shell portion constituting an outer shell that separates an inside and an outside of the housing from each other.