Abstract: A method for reducing high-frequency banding in an electrophotographic development station having a rotating shell and a rotating magnetic core is disclosed. A rotating angular velocity of the rotating shell is adjusted relative to a angular velocity of a photoconductor such that a ratio of these angular velocities is not a ratio of whole numbers.

Abstract: A method for reducing high-frequency banding in an electrophotographic development station having a rotating shell and a photoconductor is disclosed. A rotating speed of the rotating shell is adjusted relative to a photoconductor such that a banding reduction ratio is not a ratio of differing low whole numbers. Another method for reducing high-frequency banding in an electrophotographic development station having a rotating shell and a rotating magnetic core is also disclosed. A rotating speed of the rotating shell is adjusted relative to a rotating speed of the rotating magnetic core such that from the point of view of a spot on a dielectric support member (DSM) in a nip region of the DSM, a similar point on the rotating shell is substantially in alignment with the DSM spot in the nip region when a pole flip occurs.

Abstract: An electrophotographic imaging system has a dielectric support member (DSM), a primary charging station configured to form a charge layer on the DSM, and an exposure station configured to selectively discharge the charge layer formed on the DSM, thereby producing a latent image on the DSM. The electrophotographic imaging system also has a development station configured to develop the latent image on the DSM with toner. The development station has a rotating shell, a rotating magnetic core within the rotating shell, and a sump. The development station also has a feeding apparatus configured to supply fresh developer from the sump to the rotating shell. The feeding apparatus has a feed roller, one or more feed magnets within the feed roller, and one or more take-off magnets within the feed roller. The feed roller is rotatable around the one or more feed magnets and the one or more take-off magnets.

Abstract: A method for forming an electrographic image includes providing an imaging member having an electrostatic image and a toning shell adjacent to the imaging member to take into account the slippage as a result of toner particles that are approximately spherical.

Abstract: A toner composition for fixing onto a receiver in conjunction with non-contact fuser capable of fusing one or more layers of toner on the receiver such that one or more toner layers reach a fusing temperature above a glass transition temperature. One or more cooling finish rollers are located downstream from the non-contact fuser to lower the toner temperature.

Abstract: An electrophotographic imaging apparatus is provided which is capable of performing a method of preparing a non-metal substrate. The method can include imaging at least one surface of the non-metal substrate with a toner composition, the toner composition including IR absorbers. The method can further include exposing the toner composition to IR radiation through the substrate, thereby pre-heating the toner composition and preheating the substrate to a temperature less than a glass transition temperature of the substrate. The method can further include fusing the pre-heated imaged non-metal substrate at a predetermined temperature so that the average temperature of the substrate during and after fusing is less than a glass transition temperature of the substrate.

Abstract: A developer system and method for an electrographic printer is provided that provides a stable and high rate of developer flow to the photoconductor drum of the printer. The system includes a magnetic brush having a magnetic core surrounded by a toning shell that rotatably conveys a layer of developer to the photoconductor element; a sump containing a reservoir of developer, and a self-metering conveyor roller having a maximum magnetic field strength on its outer surface of between about 100 and 1000 gauss, and a minimum magnetic field strength of no less than about 30% of the maximum field strength. A driving assembly rotates the conveyor roller at a saturation speed that saturates the capacity of the conveyor roller to deliver developer to said toning shell. The self-metering conveyor roller obviates the need for a metering skive to provide a stable flow rate of developer, and increases the printing speed of the printer by providing a higher flow rate of developer to the photoconductor drum of the printer.

Abstract: A developer system and method for an electrographic printer is provided that provides a variable rate of developer flow to the photoconductor drum of the printer. The system includes a magnetic brush having a magnetic core surrounded by a toning shell that rotatably conveys a layer of developer to the photoconductor element; a sump containing a reservoir of developer, and a variable speed conveyor roller.

Abstract: A developer system and method for an electrographic printer is provided that provides a stable and high rate of developer flow to the photoconductor drum of the printer. The system includes a magnetic brush having a magnetic core surrounded by a toning shell that rotatably conveys a layer of developer to the photoconductor element; a sump containing a reservoir of developer, and a self-metering conveyor roller having a maximum magnetic field strength on its outer surface of between about 230 and 1000 gauss, and a minimum magnetic field strength of no less than about 30% of the maximum field strength. A driving assembly rotates the conveyor roller at a saturation speed that saturates the capacity of the conveyor roller to deliver developer to said toning shell. The self-metering conveyor roller obviates the need for a metering skive to provide a stable flow rate of developer, and increases the printing speed of the printer by providing a higher flow rate of developer to the photoconductor drum of the printer.

Abstract: A developer station and method for an electrophotographic printer is provided that reduces developer agitation. The developer station includes a sump of magnetic developer, and a magnetic brush roller mounted above said sump and having a rotatable magnetic core surrounded by a substantially cylindrical toning shell rotatably mounted with respect to the core. The toning shell defines a nip at its closest point to the photoconductor element. A tangent line tangent to the cylindrical toning shell at the nip is oriented substantially vertically, and the magnetic developer is applied to the toning shell at an angular distance of no more than about 120° from said nip. The toning shell may be eccentrically mounted with respect to the magnetic core and is substantially closest to the rotatable magnetic core within about +30° and ?30° from said nip. Such a configuration advantageously reduces the residence time of the developer on the toning shell.

Abstract: A developer station for an electrographic printer is provided that reduces developer agitation. The developer station includes a sump of magnetic developer, and a magnetic brush roller mounted above said sump and having a rotatable magnetic core surrounded by a substantially cylindrical toning shell rotatably mounted with respect to the core. The toning shell defines a nip at its closest point to the photoconductor element. A toning shell and magnetic core radius along with the eccentric offset of the toning shell from the rotating magnetic core are used in combination with the magnetic properties of the rotating magnetic core to determine the radius of the toning shell and magnetic core to improve the skiving and removal of developer from the toning shell after the developer has passed through the nip with the photoconductor element.

Abstract: A developer station and method for an eletrographic printer is provided that reduces developer agitation. The developer station includes a sump of magnetic developer, and a magnetic brush roller mounted above said sump and having a rotatable magnetic core surrounded by a substantially cylindrical toning shell rotatably mounted with respect to the core. The toning shell defines a nip at its closest point to the photoconductor element. A tangent line tangent to the cylindrical toning shell at the nip is oriented substantially vertically, and the magnetic developer is applied to the toning shell at an angular distance of no more than about 120° from said nip. The toning shell may be eccentrically mounted with respect to the magnetic core and is substantially closest to the rotatable magnetic core within about +30° and ?30° from said nip. Such a configuration advantageously reduces the residence time of the developer on the toning shell.

Abstract: A developer station and method for an electrographic printer is provided that reduces developer agitation. The developer station includes a sump for holding a reservoir of magnetic developer comprising toner and carrier and a magnetic auger mounted above said sump and including a rotatable magnetic core surrounded by a substantially cylindrical rotatable toning shell rotatably mounted with respect to the core, said shell being adjacent to the photoconductor drum and defining a nip and a conveyance device for transporting developer in the developer station in a flow direction. The conveyance device has a tapered auger including a shaft and one or more blades such that the developer volume in the flow direction is controlled to maintain a uniform developer level in the sump as well as a conveyance controller for controlling the conveying device, including the tapered auger such that the tapered auger preferentially creates an uniform layer of developer on the toning shell.

Abstract: Systems and methods of producing image products using printing are provided. The image products are produced by sequentially applying a base image, a first clear toner and a second clear toner. The first clear toner forms one or more lenses, and the first and second clear toners have different indexes of refraction. The image products produced by the systems and methods can be lenticular image products that display different images depending upon a viewing angle.

Abstract: Systems and methods of producing image products using printing are provided. The printed image products can include stereoscopic and/or color shifting images. These images can be formed by a sequential application of a base image, a clear toner layer and a barrier image layer in a single pass through a printer. The barrier image layer can include opaque barriers (for stereoscopic or color shifting images) or can include translucent or transparent barriers (for color shifting images).

Abstract: Systems and methods of producing image products using printing are provided. The printed image products can include stereoscopic and/or color shifting images. These images can be formed by a sequential application of a base image, a clear toner layer and a barrier image layer in a single pass through a printer. The barrier image layer can include opaque barriers (for stereoscopic or color shifting images) or can include translucent or transparent barriers (for color shifting images).

Abstract: An apparatus and method for distributed mixing and transport of toner and powders in an electrostatographic printer containing at least powder and magnetic carrier. The apparatus includes a powder conveying apparatus for transporting powder in a developer station including a development station housing having two or more auger assemblies, each auger assembly including two or more screw augers supported in a channel profile. The two or more screw augers having multiple intermeshed screw blades and controlled by a conveyance controller. The conveyance controller is in communication with the powder the one or more augers, such that each auger preferentially mixes and transports in a first or second direction as the powder conveying device conveys the powder in the developer sump of a print engine.

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: The present invention provides a custom color toner having a first particle size. Colored particles are attached to the surface of the base toner in an amount sufficient to provide a predetermined color to the base toner. The colored particles have a second particle size less than the first particle size.

Abstract: A developer station and related method for distributed replenishment of toner as well as powder coatings and related materials. The developer station is divided into a first space adjacent or within a second space, the first space located adjacent a toner supply and the second space including a developer sump. The first space includes a toner-conveying device located in the first space, the toner-conveying device having a tapered body with a first end and a second end. A conveyance housing is located adjacent to and disposed such that the toner conveying device conveys the toner toward the developer sump as it travels from the first end of the toner conveying device to the second end of the toner conveying device, the housing having slots or openings so that the toner is deposited in the developer sump along the length of the conveying device.