A developer accommodating unit includes: a developer accommodating member, provided with an opening for permitting discharge of a developer, for accommodating the developer; a sealing member including a connecting portion for being connected to the developer accommodating member so as to seal the opening; and an unsealing member for exposing the opening by moving the sealing member to peel the connecting portion from the developer accommodating member. The connecting portion includes a first connecting portion and a second connecting portion with respect to a longitudinal direction thereof. When the connecting portion is peeled from the developer accommodating member, the unsealing member is flexed so that the first connecting portion is peeled earlier than the second connecting portion.

A development unit includes a development housing configured to store toner and a development roller rotatable about a development axis extending in a first direction. The development roller supplies the toner in the development housing to a photosensitive drum. The development housing includes a reception port and a slope. The reception port receives toner from a toner container configured to store the toner to be supplied to the development housing. The reception port is located away from the development roller in a second direction crossing the first direction. The slope is located below the reception port in the development housing. The slope includes a first slope portion and a second slope portion. The first slope portion is inclined downward away from the reception port in the first direction. The second slope portion is inclined downward toward the development roller in the second direction.

A toner container includes a pouch for storing toner, the pouch being formed of a film and having an opening portion, and a nozzle attached to the opening portion of the pouch and provided with a discharge port for discharging the toner stored in the pouch outside the toner container. A filter member configured to allow air to pass through and prevent the toner from passing through is provided at a part of the pouch.

When a remaining toner amount of an accommodating portion corresponding to an output value before first toner supply is a first remaining toner amount, a remaining toner amount of the accommodating portion based on a toner filling amount in the accommodating portion in an unused state and image information of an image printed from a time of the unused state to a predetermined timing is a second remaining toner amount, a condition that the first remaining toner amount is larger than the second remaining toner amount is a first condition, and a condition that the first remaining toner amount is smaller than the second remaining toner amount is a second condition, the controller sets a discrimination threshold so that the toner container used for the first toner supply is easily discriminated as the first toner container in the first condition is than in the second condition.

A first cover is pivotable between a first cover closed position and a first cover open position about a first pivot axis located at a pivotal end. A process cartridge includes a reception port configured to receive toner from a toner container. A cover main body includes a first portion and a second portion. The first portion extends in a vertical direction in a state where the first cover is located at the first cover closed position. The second portion is connected to an upper end of first portion and extends in a second direction in a state where the first cover is located at the first cover closed position. At least part of the first cover faces the reception port in a state where the process cartridge is attached to a main housing and the first cover is located at the first cover closed position.

A toner pack stores a toner that has first and second toner particles. The surface of the second toner particle has a portion formed by connecting a plurality of silicon-containing protrusions on its surface, with the content of the second toner particle within a specific range relative to the content of the first toner particle. The toner pack has a storage portion and a discharge member, where the discharge member has a receiving port, a discharge port, a fixing part to which the storage portion is fixed, and an inclined surface that causes the toner to move toward the discharge port. The inclined surface that is the closest to the storage portion is at an angle of 45 degrees or more and less than 90 degrees.

A toner container includes a pouch configured to accommodate the toner therein and provided with an opening at a first end portion of the pouch with respect to a first direction, with a width of the pouch in a second direction that is perpendicular to the first direction being wider than a width of the pouch in a third direction that is perpendicular to both the first direction and the second direction. A first supporting portion supports the pouch on a first side of the first end portion of the pouch with respect to the second direction, the first supporting portion extending in a direction from the first end portion of the pouch to a second end portion of the pouch that is opposite to the first end portion of the pouch. A second supporting portion supports the pouch on a second side of the first end portion of the pouch that is opposite to the first side of the first end portion of the pouch with respect to the second direction, the second supporting portion extending in the direction from the first end portion of the pouch to the second end portion of the pouch.

A developer supply container includes a container unit and a discharge passage forming unit. The container unit includes a containing member including an opening portion, and a connecting member including an engaged portion and a connected portion connected to the opening portion of the containing member. The discharge passage forming unit includes an engaging portion configured to be engageable with the engaged portion, and a discharge passage which is configured to communicate with the accommodating space via the opening portion and through which the toner can be discharged to an outside.

[Problem] To provide a form of a container for use with an image forming apparatus [Solution] A container for use with an image forming apparatus and for accommodating a content of powder or a liquid, the container includes an accommodating portion configured to accommodate the content; an end portion including a discharging portion which includes a discharge opening for permitting discharge of the content to an outside of the container and a passage configured so that the content passes through the passage toward the discharge opening, and including a shutter configured to be movable relative to the discharging portion between a shielding position where the shutter shields the discharge opening and an open position where the shutter opens the discharge opening; and a cap mounted to the end portion so as to cover at least a part of the end portion and configured to be dismounted from the end portion by being rotated relative to the end portion.

A toner container includes a storage portion configured to store toner and a communicating member including a receiving port, a discharge port, and a passage. The passage includes a first inclined surface and a second inclined surface connecting the first inclined surface and the discharge port to each other. When viewed in a third direction perpendicularly intersecting with both of a first direction and a second direction, the first inclined surface is inclined with respect to the second direction such that a more downstream portion of the first inclined surface in the first direction is closer to the discharge port in the second direction, and the second inclined surface is inclined with respect to the second direction such that a more downstream portion of the second inclined surface in the first direction is closer to the discharge port in the second direction.