Abstract: A printer or other powder deposition device may include multiple toning stations, and the toning stations may be positioned in various configurations within the device. The various configurations may position the toning stations so as to increase the toning width of the device, thereby allowing the device to print larger process widths. The device may also perform processing control for the multiple toning stations.

Abstract: An apparatus and method for dispensing toner in an electrostatographic printer includes an apparatus for feeding powder toward the feed apparatus wherein the feed roller includes a tapered feed roller including a shaft and one or more variable height flutes such that there is more developer volume in the direction of flow as well as a conveyance controller for controlling the powder conveying device, including the one or more tapered feed rollers such that the tapered feed roller preferentially uniformly conveys the powder toward the feed apparatus.

Abstract: A printer or other powder deposition device may include multiple toning stations, and the toning stations may be positioned in various configurations within the device. The various configurations may position the toning stations so as to increase the toning width of the device, thereby allowing the device to print larger process widths. The device may also perform processing control for the multiple toning stations.

Abstract: An apparatus and method for dispensing toner in an electrostatographic printer includes an apparatus for feeding powder toward the feed apparatus wherein the feed roller includes a tapered feed roller comprising a shaft and one or more variable height flutes such that there is more developer volume in the direction of flow as well as a conveyance controller for controlling the powder conveying device, including the one or more tapered feed rollers such that the tapered feed roller preferentially uniformly conveys the powder toward the feed apparatus.

Abstract: Apparatus and methods for applying powder coatings to a substrate either directly or by intermediate transfer using a magnetic brush developer.

Abstract: Apparatus and methods for applying powder coatings to a substrate using a magnetic brush developer, including a method and apparatus for applying powder coatings to a substrate either directly or by intermediate transfer using a magnetic brush with a rotating magnetic field and for preparing the coating materials. The apparatus and method includes a supply of prepared powder coating material, a magnetic brush having a rotating magnetic field for applying the powder coating material to the substrate; and an electric field between the magnetic brush having a rotating magnetic field and the substrate.

Abstract: A development station is disclosed for a reproduction apparatus such as an electrophotographic printing machine. The development station includes a housing that forms a reservoir and a developer roller such as a magnetic brush for delivering developer material to a development zone. A transport roller is provided for moving developer material from the reservoir to the developer roller. The transport roller includes a rotating non-magnetic tubular shell and a stationary elongated magnetic core having an odd number of alternating North and South magnetic poles. There are at least five magnetic poles in the magnetic core, and preferably exactly five magnetic poles.

Abstract: A printer or other powder deposition device may include multiple toning stations, and the toning stations may be positioned in various configurations within the device. The various configurations may position the toning stations so as to increase the toning width of the device, thereby allowing the device to print larger process widths. The device may also perform processing control for the multiple toning stations.

Abstract: A replenisher for facilitating flow of toner in an electrophotographic apparatus. The replenisher includes a sump for receiving the toner. An beater element having a plurality of blades is rotatably mounted within the sump wherein some of the blades impart a shear force and a normal force along the axis of rotation to the toner while others of the blades impart a shear force and a normal force towards or away from the axis of rotation to the toner as the beater is rotated through the toner. This effectively “aerates” the toner and keeps it mobile within the sump.

Abstract: A replenisher for facilitating flow of toner in an electrophotographic apparatus. The replenisher includes a sump for receiving the toner. An beater element having a plurality of blades is rotatably mounted within the sump wherein some of the blades impart a shear force and a normal force along the axis of rotation to the toner while others of the blades impart a shear force and a normal force towards or away from the axis of rotation to the toner as the beater is rotated through the toner. This effectively “aerates” the toner and keeps it mobile within the sump.

Abstract: A protection circuit for an electrophotographic image-forming apparatus is disclosed. The protection circuit monitors the operational state between the power supply and scavenger plate of the electrophotographic image-forming apparatus and issues an interrupt signal whenever a de-coupled state is sensed.