There is provided a manufacturing method of manufacturing a cartridge by using a cartridge having a rotator, a frame that supports the rotator, an elastic member that is provided in a concave portion formed in the frame along a rotation axis direction of the rotator, and a sheet member that has one end fixed to the elastic member and the other end abutting on the rotator along the rotation axis direction of the rotator, and the manufacturing method includes: detaching the rotator from the frame; detaching the sheet member from the frame; detaching the elastic member from the frame; and attaching another sheet member to the frame via an adhesive member that is attached to an adhesive member attachment portion formed in the concave portion of the frame.

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 developing device includes a developer storing unit that stores a developer before use of the developing device, a developer containing unit that contains, when the developing device is used, the developer stored in the developer storing unit such that the developer is capable of being stirred by the developer containing unit, a developer holding unit that is provided in a portion of the developer containing unit and that holds the developer contained in the developer containing unit and moves the developer in a rotation direction, a sealing unit including a sealing tape portion that seals a slit-shaped opening formed in the developer storing unit along a longitudinal direction of the developer storing unit while the sealing tape portion is capable of being pulled out and that seals the slit-shaped opening of the developer storing unit by being removably fixed onto an edge of the opening and an extended tape portion that is folded at an end of the sealing tape portion in a longitudinal direction of the sealing tape portion and that extends along the sealing tape portion in such a manner as to project outward beyond the sealing tape portion, a scraping unit that is disposed at an end portion of the developer storing unit in the longitudinal direction and that causes the extended tape portion of the sealing unit to move while making frictional contact with the scraping unit so as to scrape off developer powder deposited on the extended tape portion and on the sealing tape portion, which follows movement of the extended tape portion, and a holding unit that is disposed outside the scraping unit in the longitudinal direction of the developer storing unit with a space formed between the holding unit and the scraping unit and that holds the extended tape portion and the sealing tape portion such that the extended tape portion and the sealing tape portion are capable of moving.

A method of modifying a toner hopper including a toner window and an end cap. The method including providing a slot on the end cap and applying a toner seal covering the toner window, the toner seal including a pull tab. The method further including applying an end seal to the toner hopper, the end seal providing a gap and placing the pull tab within the gap and the slot.

A developing cartridge includes a developing portion to supply toner, a toner storing portion to store the toner, a partition wall formed between the developing portion and the toner storing portion and having a toner supply section, and a storing-portion agitating member rotatably disposed in the toner storing portion to intermittently rotate to move the toner in the toner storing portion while the developing portion supplies the toner.

A powder accommodating container includes a powder accommodating portion that accommodates powder, a sealing section that openably seals a supply port by being removed from the powder accommodating portion, and a breaking section that has a film-shaped member that breaks the powder in the powder accommodating portion by being removed from the powder accommodating portion in a case of opening the supply port, is fixed to plural places in the powder accommodating portion such that the film-shaped member is removable, and is fixed to the powder accommodating portion such that a force required for removing a tip of the film-shaped member from the powder accommodating portion is larger than other portions.

A method of modifying a toner hopper including a toner window and an end cap. The method including providing a slot on the end cap and applying a toner seal covering the toner window, the toner seal including a pull tab. The method further including applying an end seal to the toner hopper, the end seal providing a gap and placing the pull tab within the gap and the slot.

A remanufactured toner cartridge and related method includes a modified driven gear that is associated with an internal seal removal mechanism. The driven gear is modified so that driving rotational force from a printer is not transmitted to the seal removal mechanism during a post test of the remanufactured cartridge. When the post test is complete a fixing member, which may include a pin, is used to return the modified driven gear to an operational configuration so that when the cartridge is subsequently installed in a printer, driving rotational force from the printer is transmitted to the removal mechanism to remove the internal toner seal, thereby permitting cartridge operation.

A developer container includes a developer accommodating portion, a rotatable member, and a flexible sheet member. The developer container further includes an elastically deformable elastic member. With respect to a longitudinal direction of the developer accommodating portion, between an end portion of the rotatable member and an inside surface of the developer accommodating portion, a gap is formed to permit movement of the rotatable member relative to the developer accommodating portion. In an unused state, the sheet member is elastically deformable together with the elastic member by the movement of the rotatable member relative to the developer accommodating portion in the longitudinal direction.

A developing apparatus includes a developer bearing member bearing and feeding developer including toner and carrier, a first feeding screw arranged in a first chamber and feeding the developer in a first direction, and a second feeding screw arranged in a second chamber and including a first blade portion feeding the developer in a second direction, a second blade portion arranged downstream of the first blade portion and feeding the developer in the first direction, and a third blade portion arranged downstream of the second blade portion. A sealing sheet is arranged upstream of a developer discharging portion and seals initial developer contained in a developing container; and an unsealing mechanism unseals the sealing sheet sealing the initial developer, wherein the sealing sheet is arranged downstream of the second blade portion and upstream of the third blade portion in the second direction.