A toner container according to one example embodiment includes a housing having a reservoir for holding toner and a rotatable auger in the reservoir. A screw flight of the auger is configured to move toner away from a first end of the auger and toward a second end of the auger when the auger rotates in an operative rotational direction. A segment of the screw flight at a first end of the screw flight has an outer diameter that is reduced in comparison with an outer diameter of the screw flight outside the segment of the screw flight to reduce an efficiency of the auger at the first end of the screw flight for reducing toner packing against an interior wall of the housing when the auger rotates in a direction counter to the operative rotational direction.

An apparatus body of an image forming apparatus has a first guide portion having an inlet shape corresponding to an outer shape of an engagement portion provided in a cartridge when seen in an attachment direction of the cartridge to the apparatus body and guiding the engagement portion, a second guide portion for guiding a positioning target portion which is provided on the cartridge for positioning an attachment completion position of the cartridge with respect to the apparatus body, and a movable member being at a regulation position at which a guiding path of the positioning target portion by the second guide portion is blocked is immovable from the regulation position unless being pressed by the engagement portion.

In a cartridge, a housing has a developer accommodating portion and includes a first side wall and a second side wall. A coupling member is disposed at a position opposite to the developer accommodating portion with respect to the first side wall. A detection body is disposed at a position opposite to the developer accommodating portion with respect to the second side wall. A first driving force transmission member is positioned at the same side with the coupling member with respect to the first side wall, and transmits driving force from the coupling member to a rotating member. A second driving force transmission member is positioned at the same side with the detection body with respect to the second side wall, and transmits driving force from the rotating member to the detection body.

A developing cartridge may include: a casing configured to accommodate developer therein, the casing extending in the first direction; a coupling rotatable about a first axis extending in the first direction, the coupling being positioned at one side of the casing in the first direction; a detection gear rotatable about a second axis extending in the first direction, the detection gear being positioned at another side of the casing in the first direction; and a storage medium including an electric contact surface, the electric contact surface being positioned at the one side of the casing in the first direction.

A replaceable unit is removably installable in an image forming device. The replaceable unit includes a rotatable input gear that is positioned to mate with an output gear of the image forming device. The replaceable unit includes an encoded member that is encoded with identifying information of the replaceable unit and that is operatively connected to the input gear such that rotation of the input gear causes movement of the encoded member. The replaceable unit includes an alignment guide on the exterior of the replaceable unit. The image forming device includes a sensor supported by a sensor housing. The alignment guide is positioned to contact and move the sensor housing during insertion of the replaceable unit into the image forming device to align the sensor with an exposed portion of the encoded member for reading the identifying information from the encoded member by the sensor.

A toner container includes an encoded member that is encoded with identifying information of the toner container and that is operatively connected to an input gear of the toner container such that rotation of the input gear causes movement of the encoded member for communicating the identifying information to a sensor. A first alignment guide on the first side of the toner container includes a top surface that is unobstructed to contact a sensor housing from below when the toner container is installed in an image forming device. At least a portion of the top surface of the first alignment guide inclines upward and rearward for contacting and lifting the sensor housing upward during insertion of the toner container into the image forming device for aligning the sensor with an exposed portion of the encoded member.

An image forming apparatus includes an apparatus body, a toner cartridge, a replaceable part, a controller and an apparatus body memory. An operating mode of the controller is set to one of a subscription mode and a normal mode. The controller is configured to perform processes in accordance with the set operating mode. The apparatus body memory is configured to store life information indicating a remaining life of the replaceable part attached to the apparatus body. The controller is configured to switch a control between: a control for allowing an extended use of the replaceable part; and a control for restricting the extended use of the replaceable part, according to the set operating mode. The extended use is defined as use of the replaceable part even after the replaceable part exceeds the remaining life indicated by the life information stored in the apparatus body memory.

In a cartridge, a developing roller is configured to rotate around a first rotational axis extending in a predetermined direction and to carry developer thereon, the developing roller having a first end and a second end apart from each other in the predetermined direction, a from-first-to-second direction being defined along the predetermined direction as being directed from the first end to the second end. A developing electrode is formed of a conductive material and is configured to be electrically connected to the developing roller, the developing electrode including a main part and a protruding portion protruding from the main part in the from-first-to-second direction. A detection body is formed of an insulating material and is rotatably supported by the protruding portion, the detection body including a first opening that exposes part of the protruding portion and a covering portion covering part of the protruding portion.

In one example in accordance with the present disclosure, a print device is described. The print device includes multiple consumable components. Each consumable component includes a portion of a hardware-based identifier. At least one sensor of the print device reads multiple portions of the hardware-based identifier. A controller of the print device combines the multiple portions of the hardware-based identifier and verifies the hardware-based identifier to determine an authenticity of the multiple consumable components.

An apparatus body of an image forming apparatus has a first guide portion having an inlet shape corresponding to an outer shape of an engagement portion provided in a cartridge when seen in an attachment direction of the cartridge to the apparatus body and guiding the engagement portion, a second guide portion for guiding a positioning target portion which is provided on the cartridge for positioning an attachment completion position of the cartridge with respect to the apparatus body, and a movable member being at a regulation position at which a guiding path of the positioning target portion by the second guide portion is blocked is immovable from the regulation position unless being pressed by the engagement portion.