In the case that a developer supply container is provided with a feeding portion for feeding a developer by receiving a rotational force and a pump portion for discharging the developer by reciprocation, and the rotational force and a reciprocating force are received from a main assembly side of an image forming apparatus, there is a liability that a driving connection is not properly established between a portion of the developer supply container for receiving the reciprocating force and a portion of the main assembly side for applying the reciprocating force.

The developer supply container is provided with a drive converting mechanism for converting the rotational force received from the main assembly side to a force for operating a volume changing type pump.

If a user is not familiar with the operation for the developer supply container, the rotating operation for the developer supply container may be insufficient, so that developer supply container does not reach a predetermined operating position, with the result of abnormal developer supply. by increasing a rotation load of a second gear 6 which is in an operable connection with a drive gear member 12 of the developer receiving apparatus 10 by a function of a locking member 7, the developer supply container 1 mounted to the developer receiving apparatus 10 is rotated toward the supply position. After the developer supply container 1 rotates to the supply position, the locking by the locking member 7 is released, by which the rotation load applied to the second gear 6 is reduced, so that drive transmission, thereafter, to the feeding member 4 for developer supply is smooth.

A developing cartridge including a casing, a developing roller, a developing roller gear, a gear cover, a first boss, and a pressure receiving surface. The developing roller is positioned closer to a first end portion of the casing than to a second end portion of the casing in a first direction. The first boss extends in a second direction and is movable together with the casing. The first boss is positioned away from the developing roller in the first direction by a first distance and also positioned away from the developing roller in a third direction. The pressure receiving surface is positioned further from the developing roller than the first boss is from the developing roller in the third direction. The pressure receiving surface is positioned away from the developing roller by the first distance or by a second distance shorter than the first distance.

A powder container includes a discharge port, and a container identifier shape portion provided on a front end surface of the powder container in an insertion direction and that functions to identify a type of the powder container, the insertion direction being a direction in which the container body is inserted. The powder container further includes a driven portion that interlocks with a first main-body interlocking portion of the image forming apparatus at the time of setting in the main body of the image forming apparatus, and an identifier opening group that starts to interlock with a second main-body interlocking portion of the image forming apparatus after the driven portion starts to interlock with the first main-body interlocking portion. A position of the identifier opening group relative to the driven portion in the circumferential direction varies depending on a type of the powder container to be identified.

A powder container is insertable in an image forming apparatus, and includes a main-body interlocking portion that is rotatable and protrudes toward an upstream side in an insertion direction in which the powder container is inserted, the image forming apparatus including an identifier protrusion that protrudes toward the upstream side in the insertion direction to identify a type of the powder container. The powder container includes a container interlocking portion configured to interlock with the main-body interlocking portion; and an interlocked portion configured to interlock with the identifier protrusion. The interlocked portion is provided in a front end of the powder container in the insertion direction. The container interlocking portion stands outward from an outer circumference of the powder container. The container interlocking portion and the interlocked portion are rotated integrally.

Examples of a host device that includes an input recess are described. In some examples, the input recess includes a rotating port cover offset from a central axis of the input recess. In some examples, the input recess includes a plurality of contacts disposed on an interfacing surface of the input recess to interface with a print particle replenishment device when the rotating port cover is rotated. In some examples, the plurality of contacts interfaces with a control device to authenticate the print particle replenishment device.

Provided is a developer replenishing container including: a developer containing part capable of containing a developer; a discharge port through which the developer contained in the developer containing part is discharged; a conveyance part conveying the developer in the developer containing part by rotating; and a displacement part displaceable in conjunction with rotation of the conveyance part in the developer in a vicinity of the discharge port, and including a moving member capable of reciprocating in conjunction with the rotation of the conveyance part and a biasing member which biases the moving member and which is expandable according to movement of the moving member.

A toner supply container includes a toner container body including a cylindrical portion and an opening, and a sealing member provided at one axial end portion of the container body. The sealing member is movable relative to the container body in an axial direction and includes a sealing portion provided at a side adjacent the container body and a coupling portion provided at a side remote from the container body. The coupling portion includes a supporting portion provided on the sealing portion, an engaging portion provided at a free end of the supporting portion, and a displacing force receiving portion provided on the supporting portion at a position closer to the container body than the engaging portion. The displacing force receiving portion is displaceable with the supporting portion and has a radially outermost part that is more remote from a rotation axis of the container body than a radially outermost part of the engaging portion. The supporting portion, the engaging portion, and the displacing force receiving portion are made of a plastic material.

An image forming apparatus includes a toner container, a container attachment portion, and a control portion. The toner container has a coupling portion. The container attachment portion includes a coupled portion that includes a first key member. A second key member of the coupling portion is formed at position where it does not interfere with the first key member in attachment state. The second key member is made of insulator. The coupled portion includes a contact terminal in which a contact is opened by the second key member and becomes OFF state when the toner container is inserted to attachment position, and the contact is closed and becomes ON state when the toner container is removed from the attachment position. The control portion detects the toner container attached to the container attachment portion when the contact of the contact terminal changes from the ON state to the OFF state.

A developer supply kit detachably mountable to a developer supplying apparatus comprising a developer supply container and a developer accommodated therein, wherein the developer supply container includes, a developer accommodating portion accommodating the developer, a discharge opening for discharging the developer accommodated in the developer accommodating portion, a drive receiving portion to which a driving force is inputted from the developer supplying apparatus, and a pump portion operable so that an internal pressure of the developer accommodating portion alternately and repetitively changes between a pressure lower than a ambient pressure and a pressure higher than the ambient pressure, by the driving force received by the drive receiving portion, wherein the developer accommodated in the developer supply container includes toner containing binder resin material and a coloring material, the developer satisfies,
10≦E (mJ)≦80,
0.4≦Ea (mJ)≦2.0, where E is total energy when it is not aerated, and Ea is total energy when it is aerated.