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| Number | Title | Issue Date |
| 7330683 | Circumferential speed and developer characteristics A developing device includes a developer bearing body disposed in opposition to a latent image bearing body for bearing a latent image thereon. The developer bearing body develops the latent image using a developer. The developer has a degree of circularity greater ... | 02/12/2008 |
| 7149460 | Systems and methods for electron charging particles Electron charging of particles, as may be associated with electrographic and/or xerographic image forming devices, powder coat finishing devices and/or guns, or the like, is performed by subjecting a stream of particles to electron bombardment from at least one elec... | 12/12/2006 |
| 6181902 | Method for operating an electrographic printer or copier for printing different colors with at least two developing units A method for operating electrographic printers or copiers uses toner particles of two different colors applied to a toner image carrier by at least two developing units. A force field is applied to at least one section of the travel path of the toner part... | 01/30/2001 |
| 5742885 | Development system employing acoustic toner fluidization for donor roll An apparatus for developing a latent image recorded on a surface including a housing defining a chamber storing a supply of toner. A toner donor member is spaced from the image bearing surface and adapted to transport toner to a region opposed from the su... | 04/21/1998 |
| 5656409 | Method of applying non-magnetic toner Non-magnetic and non-conductive powdered toner is applied to a rotating image cylinder having an electrostatic pattern. A container having a closed bottom and sides and open top contains the powdered toner. The powder is fluidized by introducing air throu... | 08/12/1997 |
| 5561509 | Monodirectionally plating developer electrode for electrophotography Embodiments are shown and described of an electrode biasing scheme and developer design for use with liquid electrophotographic imaging machines. The biasing scheme includes a bi-modal charge transport characteristic, wherein the time constant for reverse... | 10/01/1996 |
| 5532100 | Multi-roller electrostatic toning Non-magnetic and non-conductive powdered toner is applied to a rotating image cylinder having an electrostatic pattern. A container having a closed bottom and sides and open top contains the powdered toner. The powder is fluidized by introducing air throu... | 07/02/1996 |
| 5426485 | Cleaning device for a transfer belt of an image forming apparatus A cleaning device for cleaning an endless transfer belt which is made of elastic material and stretched between a first roller and a second roller, one of the two rollers being adapted for driving the belt, the transfer belt being able to come into contac... | 06/20/1995 |
