| Patent application number | Description | Published |
|---|
| 20080205936 | APPARATUS AND METHOD FOR TRANSPORTING POWDER TO AN IMAGE DEVICE OF AN ELECTROSTATOGRAPHIC PRINTER - An apparatus and method for dispensing toner in an electrostatographic printer includes an apparatus for transporting powder into a developer station containing at least powder and magnetic carrier including a conveyance housing divided into a mixing space adjacent to a second separate transport space, the second transport space located adjacent to a development roller, a powder conveying device located in the conveyance housing comprising two or more augers and a conveyance controller for controlling the powder conveying device, including the one or more augers, such that the auger preferentially mixes in the first mixing space and transports in the second transport space as the powder conveying device conveys the powder toward the imaging device of a print engine. | 08-28-2008 |
| 20090052950 | POWDER TRANSPORT WITH A TAPERED FEED ROLLER OF AN ELECTROSTATOGRAPHIC PRINTER - 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. | 02-26-2009 |
| 20090136267 | MAGNETIC SCAVENGER FOR AN ELECTROSTATOGRAPHIC PRINTER - An apparatus and method for managing magnetic carrier in an electrostatographic printer including an apparatus for directing magnetic carrier from the photoconductor, back toward the feed apparatus wherein the apparatus includes a magnetic carrier scavenger such that there is more magnetic carrier volume in the direction of the feed apparatus as well as a well to collect any magnetic carrier that does not move toward the feed apparatus. | 05-28-2009 |
| 20100150592 | METHOD OF IMPROVING DEVELOPED FLAT FIELD UNIFORMITY - Flat field uniformity can be improved in images produced by an image development system having a development roller interposed between a supply of developer and an imaging element. A raw feed of developer is supplied from the developer supply to the development roller to produce both a metered feed of developer and an overfeed of developer, which is returned to the supply, from the raw feed. A plurality of mass densities of developer used in the system and a plurality of developer velocities through the system are determined, and respective product values of those developer mass densities and those developer velocities are thereafter calculated or otherwise determined. A maximum value of the respective product values is identified, and the image development system is then operated so that the maximum product value is produced. | 06-17-2010 |
| 20100158580 | METERING SKIVE FOR A DEVELOPER ROLLER - A metering skive for a developer roller which is adapted to shear and/or meter developer at a developer-skive interface while minimizing compression of the metered developer. The metering skive is adjustable to various shear angles and has a geometry which enables a portion of the developer flow to be sheared away toward a curved second surface of the metering skive while metering the developer flow in a manner which minimizes or reduces compression of the developer. | 06-24-2010 |
| 20110158702 | ALTERNATE SCAVENGER GEOMETRY THAT PROMOTES CARRIER RETURN BACK INTO THE DEVELOPMENT STATION - A method for recirculating carrier back into a printer developer station by forming a horizontal slot in the face of the scavenger electrode. The carrier is urged through the slot and into the developer station by magnetic force to prevent the build up of carrier on the scavenger. | 06-30-2011 |
| 20110170914 | MAGNETIC ARRANGEMENT IN A DEVELOPMENT ROLLER OF AN ELECTROSTATOGRAPHIC PRINTER - An apparatus and method for arranging the spacing of magnets in an electrostatogaphic printer to eliminate steaks due to the magnetic carrier that does not move uniformly across the photoconductor surface. | 07-14-2011 |
| 20120000332 | FABRICATION OF AN ALTERNATE SCAVENGER GEOMETRY - A method of making a slotted scavenger wherein a rigid sheet is used as a starting material. A slot is formed through the sheet having horizontally angled sidewalls such that an opening of the slot on a first major surface of the sheet is smaller than an opening of the slot in a second major surface of the sheet. Modifications of the method include using a rotating cutting tool for cutting through the sheet to form slots. | 01-05-2012 |
| 20120002993 | REDUCING BACKGROUND DEVELOPMENT IN ELECTROPHOTOGRAPHIC PRINTER - Background development in a multi-color electrophotographic printer is reduced. A print job including a plurality of separations is received. Each separation has an image area and a non-image area. A printer is provided, including a development member for supplying toner to a photoreceptor for each separation. A developing and a non-developing zone are determined for each separation, corresponding to the image area and non-image area, respectively. Developer is automatically supplied to the development members, and automatically removed developer from the respective non-developing zone of each development member. | 01-05-2012 |
| 20120003015 | PRINTING JOB WITH DEVELOPER REMOVAL - A printer includes a development member for providing toner to a photoreceptor. A developer remover is located between a developer supply and the photoreceptor in the direction of rotation of the development member, and selectively contacts the development member to remove developer therefrom. A controller receives a print job, determines a non-developing zone of the development member corresponding to the non-image area of the job, and determines a developing zone of the development member corresponding to the image area of the job. The developer remover removes developer when it is in the non-developing zone, but not when it is in the developing zone. | 01-05-2012 |
| 20120003021 | PRINTER HAVING AN ALTERNATE SCAVENGER GEOMETRY - A printer having a developer station for holding a supply of developer which includes magnetized carrier particles, a magnetized development roller, and an imaging roller proximate the development roller which collects carrier particles during operation of the printer. A scavenger proximate the imaging roller and the development roller removes the carrier particles from the imaging roller during operation of the printer which are then urged through a slot in the scavenger by the magnetized development roller. | 01-05-2012 |
