A toner conveyance device includes a vertical conveyance portion, a horizontal conveyance portion, a conveyance member, and a loosening member. The vertical conveyance portion conveys a toner or a developer containing the toner conveyed therein through an entry port connected to a main-body-side conveyance path by causing the toner or the developer to fall vertically. The horizontal conveyance portion is connected to a lower end of the vertical conveyance portion and conveys the toner or the developer in a horizontal direction by using the conveyance member arranged in the horizontal conveyance portion. The loosening member is arranged so as to be movable between a first position below a connection portion between the main-body-side conveyance path and the entry port and a second position protruding upward beyond the connection portion and reciprocates in a vertical direction at each of the first position and the second position.

A toner conveying device includes a toner replenishing tube extended upwardly/downwardly, a loosening member reciprocating upwardly/downwardly inside the replenishing tube, a toner conveying tube, a conveying member and a converting part. The conveying tube is extended in a crossing direction with the replenishing tube and communicates the replenishing tube and a toner containing part. The conveying member is arranged rotatably inside the conveying tube to convey a toner from the toner containing part to the replenishing tube. The converting part converts rotating movement of the conveying member to reciprocating movement of the loosening member. The loosening member includes a straight line portion and a protruded portion. The straight line portion is engaged with the conveying member via the converting part and extended downwardly along the replenishing tube. The protruded portion is continued from a lower end of the straight line portion, and bent and protruded in the crossing direction.

A toner conveyance device includes a vertical conveyance portion, a horizontal conveyance portion, a conveyance member, and a loosening member. The vertical conveyance portion conveys a toner or a developer containing the toner conveyed therein through an entry port connected to a main-body-side conveyance path by causing the toner or the developer to fall vertically. The horizontal conveyance portion is connected to a lower end of the vertical conveyance portion and conveys the toner or the developer in a horizontal direction by using the conveyance member arranged in the horizontal conveyance portion. The loosening member is arranged so as to be movable between a first position below a connection portion between the main-body-side conveyance path and the entry port and a second position protruding upward beyond the connection portion and reciprocates in a vertical direction at each of the first position and the second position.

A print material cartridge (215) that includes a reservoir to maintain an amount of print material (Toner) therein; an agitator (230) formed within the reservoir to fragment clumps of print material present in the reservoir; and a tab (235) mechanically coupled to the agitator via a gear system (240), the tab extending out of a housing of the print material cartridge to activate the agitator as the print material cartridge is being interfaced with a printing device (205, 410).

A print material cartridge (215) that includes a reservoir to maintain an amount of print material (Toner) therein; an agitator (230) formed within the reservoir to fragment clumps of print material present in the reservoir; and a tab (235) mechanically coupled to the agitator via a gear system (240), the tab extending out of a housing of the print material cartridge to activate the agitator as the print material cartridge is being interfaced with a printing device (205, 410).

A toner conveying device conveys toner supplied from outside. The toner conveying device includes a housing, a plurality of toner acceptors, a plurality of legs, a bracket, and a vibration generator. The housing has a toner conveyance path inside. The toner acceptors are provided on the housing to accept toner supplied from outside and guide the toner to the toner conveyance path. The legs are fixed near the toner acceptors on the housing, respectively, and protrude outward from a side surface of the housing. The bracket is supported by each of the legs. The vibration generator is attached to the bracket.

A toner conveying device conveys toner supplied from outside. The toner conveying device includes a housing, a plurality of toner acceptors, a plurality of legs, a bracket, and a vibration generator. The housing has a toner conveyance path inside. The toner acceptors are provided on the housing to accept toner supplied from outside and guide the toner to the toner conveyance path. The legs are fixed near the toner acceptors on the housing, respectively, and protrude outward from a side surface of the housing. The bracket is supported by each of the legs. The vibration generator is attached to the bracket.

A toner supply device includes a toner storage unit that stores toner for supply, and a stirring unit that stirs the toner stored in the toner storage unit. The toner storage unit includes an inlet for introducing the toner from a toner container to the toner storage unit, and an intake portion that takes in the toner to a supply path for supplying the toner toward a developing device. The stirring unit includes a paddle portion provided to be rotatable about an axis of rotation for moving the toner toward the intake portion, and a screw portion for transporting the toner toward the paddle portion. The screw portion transports the toner in a direction of the axis of rotation of the paddle portion.

A developing apparatus includes: a housing that accommodates developer and has a plurality of constituent parts; a vibrator that vibrates parts, which are two or more of the plurality of the constituent parts and to which scattered toner may adhere, as vibrated portions; an adjuster provided for at least one of the vibrated portions and the vibrator so as to adjust and match natural frequencies of the two or more of the vibrated portions; and a hardware processor that controls the vibrator.

A developing apparatus includes: a housing that accommodates developer and has a plurality of constituent parts; a vibrator that vibrates parts, which are two or more of the plurality of the constituent parts and to which scattered toner may adhere, as vibrated portions; an adjuster provided for at least one of the vibrated portions and the vibrator so as to adjust and match natural frequencies of the two or more of the vibrated portions; and a hardware processor that controls the vibrator.