In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7447476 | Cleaning unit and image forming device A cleaning unit includes a traveling belt and a belt cleaning member. The traveling belt is formed in a loop and travels via the vicinity of the contact point between an image support member and an image support member cleaning member, and comes into contact with li... | 11/04/2008 |
| 7421238 | Used developer cleaning system and image forming apparatus having the same A used developer cleaning system is provided which removes used developer remaining on an image transmission medium after a developer image has been transferred, and an image forming apparatus having such a used developer cleaning system. The used developer cleaning... | 09/02/2008 |
| 7319831 | Waste-sludge discharging unit and image forming apparatus having the same A waste-sludge discharging unit is provided to discharge waste sludge being removed by a cleaning blade from an image carrier. The waste-sludge discharging unit has a waste-sludge receiver to receive waste sludge gravitating from the image carrier. The waste-sludge ... | 01/15/2008 |
| 7314129 | Image forming apparatus The image forming apparatus includes two tension rollers; a conveyor belt movably supported at the two tension rollers; a plurality of transfer parts that are arranged on the back surface side of the conveyor belt and between the two tension rollers, that contact on... | 01/01/2008 |
| 7266338 | Waste toner pulverizing apparatus and toner cartridge with the same A waste toner pulverizing apparatus and a toner cartridge with the same prevents waste toner removed from a surface of a photosensitive drum by a cleaning blade from accumulating at a front end of the cleaning blade. The waste toner pulverizing apparatus in accordan... | 09/04/2007 |
| 7194229 | Method and apparatus for forming superimposed toner images of a plurality of colors When superimposing toner images of a plurality of colors on an image supporting member to form a color image, a free phase ion in a precedent image is removed without distorting the toner image precedently formed on the image supporting member, thereby improving rep... | 03/20/2007 |
| 7055675 | Conveyor belt cleaning system An assembly for cleaning a conveyor belt system is disclosed. The cleaning assembly is for a conveyor belt system with the type having first and second endless belts which each traverse a separate belt travel path and together define a generally upright article tran... | 06/06/2006 |
| 7039353 | Image forming apparatus, replacement unit and cleaner An image forming apparatus includes an intermediate transfer member having at least one short surface and two elongated surfaces and held so as to be substantially a flat shape, and an intermediate transfer member cleaner provided on the short surface of the interme... | 05/02/2006 |
| 7010259 | Apparatus and method for cleaning an image transfer device An apparatus and method for cleaning an image transfer surface in an image transfer device. The cleaning apparatus includes a first cleaning station and a second cleaning station positioned to consecutively clean the image transfer surface. The first and second clea... | 03/07/2006 |
| 7003248 | Liquid image formation apparatus and liquid developing device An excess toner removal area is made broader over the whole area with respect to a developer applied area that is broader than an image effective area. Thereby a liquid developer, that tends to spread slightly broader than the applied area after being applied to a p... | 02/21/2006 |
| 6978111 | Method and device for cleaning liquid development electrophotographic device A cleaning apparatus for a liquid-development electrophotographic apparatus in which, after a toner image formed on a surface of an intermediate transfer member by use of a liquid developer is transferred to a printing medium, the liquid developer remaining on the i... | 12/20/2005 |
| 6879804 | Liquid electrophotographic image forming apparatus having a waste developing agent container A liquid image forming apparatus includes a waste developing agent container in which a developing agent removed by the cleaning blade from a photosensitive body is stored. The waste developing agent container is provided in a developing container. ... | 04/12/2005 |
| 6876833 | Device and method for cleaning and for regenerating an image carrier during electrographic printing or copying by using liquid ink A device for cleaning an image carrier of residuals of an ink image, in which for inking the latent image on a latent image carrier, droplets are transferred from a liquid layer onto the surface of the latent image carrier by overcoming an air gap. The cleaning devi... | 04/05/2005 |
| 6816693 | Apparatus and method for removing carrier liquid from a photoreceptor surface or from a toned image on a photoreceptor A liquid electrophotographic imaging apparatus contains at least one drying sheet for removing excess carrier liquid in a liquid toner toned latent image on a photoconductor surface. The drying sheet comprises a flexible substrate having a first surface and second s... | 11/09/2004 |
| 6802910 | Cleaning and remanufacturing methods for developing container A cleaning method for cleaning a developer container includes a step of blowing air through an opening formed in the developer container at a first flow rate; a step of sucking air through the opening at a second flow rate which is larger than the first flow rate; w... | 10/12/2004 |
| 6745002 | Liquid-development electrophotographic apparatus A liquid-development electrophotographic apparatus utilizes a nonvolatile, high-viscosity, high-concentration liquid toner as a liquid developer. A developing section is in contact with photosensitive drums 11-14, on which an electrostatic latent image is for... | 06/01/2004 |
| 6640073 | Liquid image formation apparatus and liquid developing device An excess toner removal area is made broader over the whole area with respect to a developer applied area that is broader than an image effective area. Thereby a liquid developer, that tends to spread slightly broader than the applied area after being app... | 10/28/2003 |
| 6553205 | System for toner cleaning A toner cleaning system for cleaning a toner from a supporting surface, including a movable member having a carrier permeable segment that features a porous structure. The movable member is actuated to engage the supporting surface so as to receive theref... | 04/22/2003 |
| 6546224 | Wet-type printing apparatus having a cleaner A printing apparatus for printing an image onto a print medium with use of a liquid developer which contains a liquid carrier and a toner being dispersed in the liquid carrier. The printing apparatus has: an image holding member having an imaging surface ... | 04/08/2003 |
| 6529700 | System for removing liquid carrier The present invention provides a liquid carrier removing system which efficiently removes liquid carrier from a liquid developed image on a latent image bearing member, and reduces disturbance of a visible image formed with toner particles. The liquid car... | 03/04/2003 |
| 6466757 | Developing device using a developing liquid and image forming apparatus including the same A developing device of the type using a developing liquid and applicable to an image forming apparatus includes a developing roller and a sweep roller. The developing roller is pressed against a photoconductive drum to thereby form a nip. The sweep roller... | 10/15/2002 |
| 6349186 | Method for controlling the mode of a developing station of a liquid electrophotographic printer and as development roller driving apparatus therefor There are provided a method for controlling the mode of a developing station of a liquid electrophotographic printer and a development roller driving apparatus therefor. In the controlling method, a printing mode, a drip line removal mode and a home mode ... | 02/19/2002 |
| 6347212 | Image forming apparatus having improved image carrier cleaning An image forming apparatus allowing an image carrier included therein to be desirably cleaned is disclosed. A developing device uses a developing liquid consisting of a carrier liquid and toner dispersed therein. A toner image produced by the developing d... | 02/12/2002 |
| 6330421 | Apparatus for dissolving residual toner from a transfer roller and a photoreceptor belt of a liquid electrophotographic printer upon printing of a sheet/user actuation A pair of cleaning apparatuses for a liquid electrophotographic printer that can completely remove to residual toner from both a photo receptor belt and a transfer roller, respectively. Each cleaning apparatus is supplied with a liquid solvent used to dis... | 12/11/2001 |
| 6317578 | Wet-type image forming device and cleaning apparatus A wet-type image forming device includes a development roller, a squeeze roller, a cleaning roller, a brush roller, and a reservoir, with voltages being applied to these components. A portion of one side of the reservoir is bent in a V-shape to form a pro... | 11/13/2001 |
| 6314259 | Photoreceptor web for liquid electrophotographic printer A photoreceptor web for a liquid electrophotographic printer on which a predetermined image is developed at a development unit and the developed image is transferred to a transfer unit to be printed on a sheet of paper, in which a total length of the phot... | 11/06/2001 |
| 6308034 | Wet-type electrophotography apparatus, using non-volatile, high viscosity, high concentration liquid toner A wet-type electrophotography apparatus using a non-volatile, high-viscosity, high-concentration liquid toner as a liquid developer and having a photoconductive medium, a prewetting device applying a film of prewetting solution to the surface of the photo... | 10/23/2001 |
| 6295430 | Drying unit coupling apparatus of liquid electrophotographic printer A drying unit coupling apparatus of a liquid electrophotographic printer in which the engagement of a driving gear installed at a main frame, and a driven gear installed at a cam shaft, are prevented from disengaging when an auxiliary frame supporting the... | 09/25/2001 |
| 6219512 | Toner image dryer for a wet electrophotographic recording system A toner image dryer is constituted to include a drying belt 11 having a functional material coated on a film surface of a base material, a pressure-contact roller rotated following rotation of an opposing drive roller for rotating and moving a drive belt ... | 04/17/2001 |
| 6205317 | Method of cleaning ink remaining on photoreceptor web when error occurs in printer A method of cleaning ink remaining on a photoreceptor web when an error occurs in a printer including a development unit for supplying ink to a rotating photoreceptor web to develop an electrostatic latent image formed on the photoreceptor web, a transfer... | 03/20/2001 |
| 6192214 | Roller cleaning apparatus of liquid electrophotographic printer A roller cleaning apparatus of a liquid electrophotographic printer cleans a circumferential surface of a roller where a film is formed due to contact with a photoreceptor medium. The apparatus includes an abrasion member installed to be in contact with t... | 02/20/2001 |
| 6181903 | Developing roller cleaning apparatus of liquid printer A developing roller cleaning apparatus for a liquid printer includes a cleaning brush rotating in contact with a developing roller so that developer adhering to an outer circumferential surface of the developing roller can be cleaned, a blade holder, and ... | 01/30/2001 |
| 6097917 | Developer removing apparatus of liquid printer A developer removing apparatus is provided of a liquid printer for removing a developer remaining between a photoreceptor belt and a squeeze roller. The apparatus includes a suction nozzle having a suction portion formed in an axial direction of the squee... | 08/01/2000 |
| 6072973 | Squeeze roller elevating apparatus for liquid electrophotographic printer A squeeze roller elevating apparatus for a liquid electrophotographic printer in which a squeeze roller selectively presses a photoreceptor belt, the photoreceptor belt being supported by a belt, the apparatus including a squeeze frame fixed to the belt f... | 06/06/2000 |
| 6064851 | Electrophotographic system having a solvent removing device An electrophotographic system includes a photoreceptor belt for carrying a toner image including solvent, a solvent absorbing roller for absorbing the solvent from the toner image, a solvent evaporation roller for receiving the solvent from the solvent ab... | 05/16/2000 |
| 6041201 | Apparatus for filtering solvent of liquid electrophotographic printer In an apparatus for filtering a solvent of a liquid electrophotographic printer, an exhaust fan exhausts air inside a main body of the printer to the outside thereof. A platinum catalyst filter is installed on a flow route of air exhausted by the exhaust ... | 03/21/2000 |
| 6035167 | Wet-type image forming apparatus and squeezing method A wet-type image forming apparatus providing a uniform pressure applied to a photoconductor belt is disclosed. A squeezing roller is provided in the development side of the photoconductor belt and a backup roller in provided in the non-development side of... | 03/07/2000 |
| 5999778 | Developing device of wet type printer A developing device, of a wet type printer, provided with a reservoir for holding developer liquid. A developing roller is installed at an upper region of the reservoir, and contacts a photosensitive belt. A cleaning device for cleaning the developing rol... | 12/07/1999 |
| 5987285 | Belt type photosensitive member cleaning apparatus for wet type image forming apparatus The invention provides a belt type photosensitive member cleaning apparatus for a wet type image forming apparatus which can effectively remove liquid developer pressed out by a pair of pressing out rollers for removing remaining liquid developer from a b... | 11/16/1999 |
| 5987281 | Image forming apparatus A developing device develops a latent image formed on a latent image carrier by supplying a developer to the latent image carrier. The developer comprises a carrier liquid and a toner dispersed in the carrier liquid. A gelling agent adding device adds a g... | 11/16/1999 |