A replenishing system includes a first image forming apparatus including a first image forming portion, a first accommodating portion and a first mounting port, a second image forming apparatus including a second image forming portion, a second accommodating portion and a second mounting port different from the first mounting port in a shape, a first accommodating device including a first interface portion and accommodating a consumable agent, a second accommodating device including a second interface portion different from the first interface portion in a shape and accommodating a consumable agent. The first interface portion is mountable on the first mounting port, the consumable agent accommodated by the first accommodating device is capable of being replenished, the second interface portion is not mountable on the first mounting port, each of the first and second interface portions is mountable on the second mounting port, and the consumable agent accommodated by the first and second accommodating device are capable of being replenished each other.

A developer cartridge comprises a first gear. The first gear may include a first protrusion extending in a radial direction of the first gear. The first protrusion may be positioned at a circumference of a column of the first gear. The first protrusion may be spaced apart from a second end face opposite to a first end face facing an exterior surface of a casing configured to accommodate developer therein. The first protrusion may be further from the second end face than a large-diameter gear in an axial direction. A rotational circumference of the first protrusion defined by rotation of the first protrusion and a portion of the large-diameter gear are aligned in the axial direction.

A developing cartridge includes a housing, a chip, and a chip connection assembly. The chip is provided with an electrical contact, and at least a part of the chip connection assembly may move relative to the housing as a movable member between a first position and a second position. In the first position, a communication connection cannot be established between the electrical contact and a power terminal outside the developing cartridge. In the second position, the movable member enables a communication connection to be established between the electrical contact and the power terminal outside the developing cartridge. Such a design can prevent damage to the electrical contact of the chip and improve working stability of the chip.

A toner container includes: a containing unit that contains a toner; a storage device that stores information; and an attachment unit. The attachment unit includes a cover member, a supporting member, and an insertion member. The cover member has a first projection and an insertion opening. The first projection extends in a first direction. The insertion opening is provided on the first projection and extends in a second direction. The supporting member has a first depression and a through opening. The first depression extends in the first direction and allows the first projection to be inserted into the first depression. The through opening extends in the second direction and is in communication with the first depression. The insertion member is inserted into the through opening and the insertion opening in a state where the storage device is positioned between the cover member and the supporting member.

A developer cartridge comprises a first gear. The first gear may include a first protrusion extending in a radial direction of the first gear. The first protrusion may be positioned at a circumference of a column of the first gear. The first protrusion may be spaced apart from a second end face opposite to a first end face facing an exterior surface of a casing configured to accommodate developer therein. The first protrusion may be further from the second end face than a large-diameter gear in an axial direction. A rotational circumference of the first protrusion defined by rotation of the first protrusion and a portion of the large-diameter gear are aligned in the axial direction.

A toner case includes a case main body and a cover. The case main body stores a toner. The cover covers a face of the case main body at one end side in a longitudinal direction of the case main body. An inside projection or an inside recess is provided on an inner face of the cover at a position to be touchable from an outside. A number of the inside projection or the inside recess is determined based on a color of the toner stored in the case main body.

A component has a surface to which a sheet material having an adhesive surface is adhered, and an adhesive target region on a surface of the component, to which the sheet material is adhered, is provided at the peripheral edge thereof with a first region and a second region. The first region includes a recess that allows a predetermined sheet material peeling tool to be insertable to a side of the adhesive surface of the sheet material. The second region is positioned in the vicinity of the first region, and includes a region not in contact with the adhesive surface of the sheet material or a region mixedly including a part in contact with the adhesive surface and a part not in contact with the adhesive surface.

A system with a container including a protrusion, and a receiver to receive the container. The receiver includes a slide block that is movable relative to a body of the receiver, the slide block including two surfaces, a first surface, initially contacted by the protrusion of the container during insertion of the container into the receiver, having a first slope to resist movement of the container towards the receiver, and a second surface, subsequently contacted by the protrusion of the container during the insertion of the container into the receiver, having a second slope to interact with the protrusion of the container to assist movement of the container towards the receiver. This construction provides the user with a changing insertion force to indicate proper mounting of the container.

A toner case includes a case main body and a cover. The case main body stores a toner. The cover covers a face of the case main body at one end side in a longitudinal direction of the case main body. An inside projection or an inside recess is provided on an inner face of the cover at a position to be touchable from an outside. A number of the inside projection or the inside recess is determined based on a color of the toner stored in the case main body.

A toner cartridge comprises a toner container which contains toner, a driving member which rotationally drives a conveying member, an agitating member which agitates a toner in the toner container while being rotated, a driven member which rotates in association with the driving member which is for rotationally driving the agitating member, and a rotational body which rotates according to rotation of the driven member, has a plurality of slits in rotational circumference for identifying a type of the toner cartridge, and has 1/K or more of the slits when a ratio of a rotational speed R1 (rad/s) of the driving member and a rotational speed R2 (rad/s) of the driven member is K=R2/R1.