Abstract: A toner cartridge according to one example embodiment includes a housing having a reservoir for holding toner. A first latch-receiving shelf is positioned on a first longitudinal end of the housing and a second latch-receiving shelf is positioned on a second longitudinal end of the housing. Contact surfaces on top portions of the first and second latch-receiving shelves are positioned to contact corresponding first and second latches in an image forming device. The contact surface of the first latch-receiving shelf is positioned lower than a first rotational axis of a first drive coupler of the toner cartridge and higher than a second drive coupler of the toner cartridge. The contact surface of the second latch-receiving shelf is positioned lower than at least a portion of a first electrical contact of the toner cartridge and higher than at least a portion of a second electrical contact of the toner cartridge.

Abstract: A toner cartridge according to one example embodiment includes a housing having a reservoir for holding toner. A first electrical contact and a second electrical contact are positioned on a first longitudinal end of the housing. The first electrical contact is electrically connected to processing circuitry positioned on the housing. The second electrical contact is electrically connected to an imaging component positioned on the housing. The first electrical contact is positioned higher than the second electrical contact. A first drive coupler and a second drive coupler are positioned on a second longitudinal end of the housing. The first electrical contact and the second electrical contact are positioned higher than a first rotational axis of the first drive coupler. The first electrical contact is positioned higher than a second rotational axis of the second drive coupler and the second electrical contact is positioned lower than the second rotational axis.

Abstract: A toner cartridge according to one example embodiment includes a housing having a reservoir for containing toner therein. An exit port in fluid communication with the reservoir faces downward on a front of the housing near a first side of the housing. A portion of a main interface gear for providing rotational power to a toner delivery system is exposed on the front of the housing near a top of a second side of the housing and engagable with a corresponding drive gear in the image forming device. A projection projects from the front of the housing and is spaced from the exit port toward the first side of the housing. The projection extends further forward than a frontmost portion of the exit port. A front of the projection is unobstructed for engaging a shutter on a developer unit when the toner cartridge is inserted into the image forming device.

Abstract: A toner cartridge according to one example embodiment includes a housing having a reservoir for containing toner therein. An exit port in fluid communication with the reservoir faces downward on a front of the housing near a first side of the housing. A portion of a main interface gear for providing rotational power to a toner delivery system is exposed on the front of the housing near a top of a second side of the housing and engagable with a corresponding drive gear in the image forming device. A projection projects from the front of the housing and is spaced from the exit port toward the first side of the housing. The projection extends further forward than a frontmost portion of the exit port. A front of the projection is unobstructed for engaging a shutter on a developer unit when the toner cartridge is inserted into the image forming device.

Abstract: An electrophotographic image forming device includes a replaceable unit that has a reservoir for holding toner. A circuit board is mounted within a pocket on a first side of a housing of the replaceable unit. The pocket has an opening facing a front of the housing to permit an electrical connector of the image forming device to enter the pocket and mate with the circuit board when the replaceable unit is installed in the image forming device. A first guide wall and a second guide wall are each positioned outside the pocket on the first side of the housing closer to the front of the housing than the opening. Inclined surfaces of the first and second guide walls are angled to move the electrical connector of the image forming device toward the circuit board during insertion of the replaceable unit into the image forming device.

Abstract: An electrophotographic image forming device according to one example embodiment includes a toner cartridge having a housing that defines a reservoir for containing toner. An exit port in fluid communication with the reservoir faces downward on the front of the housing near a first side. A toner delivery system for transferring toner from the reservoir includes a main interface gear exposed on the front of the housing near the top of the second side. A rearward facing opening is exposed at the rear of the housing near the first side of the housing for receiving a first engagement feature in an image forming device. A forward facing opening is exposed at the front of the housing near the first side of the housing for receiving a second engagement feature in the image forming device. The forward facing opening overlaps with the rearward facing in a side-to-side dimension of the housing.

Abstract: An electrophotographic image forming device includes a replaceable unit that has a housing having an internal reservoir for storing toner. A circuit board retainer is positioned on an exterior surface of the housing. The retainer includes a top having an undersurface having first and second supports extending away from the undersurface of the top toward a bottom of the retainer. A mounting platform is positioned on the undersurface of the top intermediate the first and second supports and spaced apart from the bottom of the retainer. A circuit board is mounted on the mounting platform. The top and the first and second supports form an opening at the front of the retainer sized to receive an electrical connector of the image forming device for mating with the circuit board when the replaceable unit is installed in the image forming device.

Abstract: A replaceable unit for an electrophotographic image forming device includes an electrical contact positioned within a pocket on a first side of a housing of the replaceable unit. The pocket has an opening facing a front of the housing to permit an electrical connector of the image forming device to enter the pocket and mate with the electrical contact. A first guide wall and a second guide wall are each positioned outside the pocket on the first side, in front of the opening. The first and second guide walls each include an inclined surface that inclines outward from the first side of the housing in a direction from the front to a rear of the housing to move the electrical connector of the image forming device toward the circuit board during insertion of the replaceable unit into the image forming device.

Abstract: A replaceable unit for an electrophotographic image forming device includes an electrical contact positioned within a pocket on a first side of a housing of the replaceable unit. The pocket has an opening facing a front of the housing to permit an electrical connector of the image forming device to enter the pocket and mate with the electrical contact. A first guide wall and a second guide wall are each positioned outside the pocket on the first side, in front of the opening. The first and second guide walls each include an inclined surface that inclines outward from the first side of the housing in a direction from the front to a rear of the housing to move the electrical connector of the image forming device toward the circuit board during insertion of the replaceable unit into the image forming device.

Abstract: An electrophotographic image forming device includes a replaceable unit that has a reservoir for holding toner. A circuit board is mounted within a pocket on a first side of a housing of the replaceable unit. The pocket has an opening facing a front of the housing to permit an electrical connector of the image forming device to enter the pocket and mate with the circuit board when the replaceable unit is installed in the image forming device. A first guide wall and a second guide wall are each positioned outside the pocket on the first side of the housing closer to the front of the housing than the opening. Inclined surfaces of the first and second guide walls are angled to move the electrical connector of the image forming device toward the circuit board during insertion of the replaceable unit into the image to forming device.

Abstract: An electrophotographic image forming device includes a replaceable unit that has a housing having an internal reservoir for storing toner. A circuit board retainer is positioned on an exterior surface of the housing. The retainer includes a top having an undersurface having first and second supports extending away from the undersurface of the top toward a bottom of the retainer. A mounting platform is positioned on the undersurface of the top intermediate the first and second supports and spaced apart from the bottom of the retainer. A circuit board is mounted on the mounting platform. The top and the first and second supports form an opening at the front of the retainer sized to receive an electrical connector of the image forming device for mating with the circuit board when the replaceable unit is installed in the image forming device.

Abstract: An electrophotographic image forming device according to one example embodiment includes a toner cartridge having a housing that defines a reservoir for containing toner. An exit port in fluid communication with the reservoir faces downward on the front of the housing near a first side. A toner delivery system for transferring toner from the reservoir includes a main interface gear exposed on the front of the housing near the top of the second side. A rearward facing opening is exposed at the rear of the housing near the first side of the housing for receiving a first engagement feature in an image forming device. A forward facing opening is exposed at the front of the housing near the first side of the housing for receiving a second engagement feature in the image forming device. The forward facing opening overlaps with the rearward facing in a side-to-side dimension of the housing.

Abstract: A replaceable unit for an electrophotographic image forming device according to one embodiment includes a housing having a toner reservoir and a circuit board retainer removably mounted on an exterior surface of a first side of the housing. The retainer includes a circuit board mounted on a mounting platform. The circuit board is spaced from the exterior surface of the first side of the housing forming a pocket between the circuit board and the exterior surface of the first side of the housing. The retainer includes an opening facing toward the front of the housing into the pocket formed between the circuit board and the exterior surface of the first side of the housing for receiving an electrical connector of the image forming device that mates with the electrical contacts of the circuit board when the replaceable unit is installed in the image forming device.

Abstract: A toner cartridge according to one example embodiment includes a housing defining a reservoir for containing toner. An exit port in fluid communication with the reservoir faces downward on a front of the housing near a first side of the housing. A first alignment guide is positioned on the first side of the housing and a second alignment guide positioned on the second side of the housing. A toner delivery system for transferring toner from the reservoir out of the exit port includes a main interface gear. A portion of the main interface gear is exposed on the front of the housing at a second side of the housing above the second alignment guide. A connector on the first side of the housing has a forward facing opening positioned above the first alignment guide. Electrical contacts are positioned within the connector and are accessible through the forward facing opening.

Abstract: A toner cartridge according to one example embodiment includes a housing defining a reservoir for containing toner. An exit port in fluid communication with the reservoir faces downward on a front of the housing near a first side of the housing. A first alignment guide is positioned on the first side of the housing and a second alignment guide positioned on the second side of the housing. A toner delivery system for transferring toner from the reservoir out of the exit port includes a main interface gear. A portion of the main interface gear is exposed on the front of the housing at a second side of the housing above the second alignment guide. A connector on the first side of the housing has a forward facing opening positioned above the first alignment guide. Electrical contacts are positioned within the connector and are accessible through the forward facing opening.

Abstract: A toner cartridge according to one example embodiment includes a housing that defines a reservoir for containing toner. An exit port in fluid communication with the reservoir faces downward on the front of the housing near a first side. A toner delivery system for transferring toner from the reservoir includes a main interface gear exposed on the front of the housing near the top of the second side. A rearward facing opening is exposed at the rear of the housing near the first side of the housing for receiving a first engagement feature in an image forming device. A forward facing opening is exposed at the front of the housing near the first side of the housing for receiving a second engagement feature in the image forming device. The forward facing opening overlaps with the rearward facing in a side-to-side dimension of the housing.

Abstract: A replaceable unit for an electrophotographic image forming device according to one embodiment includes a housing having a toner reservoir and a circuit board retainer removably mounted on an exterior surface of a first side of the housing. The retainer includes a circuit board mounted on a mounting platform. The circuit board is spaced from the exterior surface of the first side of the housing forming a pocket between the circuit board and the exterior surface of the first side of the housing. The retainer includes an opening facing toward the front of the housing into the pocket formed between the circuit board and the exterior surface of the first side of the housing for receiving an electrical connector of the image forming device that mates with the electrical contacts of the circuit board when the replaceable unit is installed in the image forming device.

Abstract: A replaceable unit for an electrophotographic image forming device includes a circuit board mounted within a pocket on a first side of a housing of the replaceable unit. The pocket has an opening facing a front of the housing to permit an electrical connector of the image forming device to enter the pocket and mate with the circuit board. A first guide wall and a second guide wall are each positioned outside the pocket on the first side closer to the front than the opening. The first and second guide walls each include an inclined surface that inclines outward from the first side of the housing in a direction from the front to a rear of the housing to move the electrical connector of the image forming device toward the circuit board during insertion of the replaceable unit into the image forming device.

Abstract: A toner cartridge for an image forming device according to one example embodiment includes a housing having a reservoir for containing toner therein. The housing has an exit port on a front of the housing in fluid communication with the reservoir. A first leg and a second leg each project from a bottom of the housing and extend primarily along a front-to-rear dimension of the housing. A first alignment guide is positioned on a first side of the housing and a second alignment guide is positioned on a second side of the housing. Each alignment guide extends primarily along the front-to-rear dimension of the housing. The first alignment guide includes a pair of rounded contact points and the second alignment guide includes a rounded contact point. The rounded contact points of the first and second alignment control the vertical position of the toner cartridge in the image forming device.

Abstract: A toner container including a first electrode disposed within the toner container, a second electrode electrically connected to the first electrode and disposed within the toner container, and a sense electrode disposed between the first electrode and the second electrode. The sense electrode and the first electrode form a first capacitor having a first capacitance that changes in response to a change in toner amount existing therebetween. The sense electrode and the second electrode form a second capacitor having a second capacitance that changes in response to a change in toner amount existing therebetween.