Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7382514 | Core-shell particles for electrophoretic display The invention relates to electrophoretic displays comprising core-shell pigment particles having a core of low specific gravity and low refractive index and a shell of high refractive index. ... | 06/03/2008 |
| 7118838 | Method, apparatus and media for displaying information An apparatus for forming an image using an electrophoretic particle suspension containing media including: a transitioner for sufficiently lowering a viscosity of the suspension to facilitate mobility of at least some of the electrophoretic particles; and, imaging e... | 10/10/2006 |
| 7090757 | Photoelectrochemical molecular comb A method and apparatus for separating molecules. The apparatus includes a substrate having a surface. A film in contact with the surface defines a substrate/film interface. An electrode electrically connected to the film applies a voltage potential between the elect... | 08/15/2006 |
| 7048394 | Mechanism for adjustable installation of band plate-like member A mechanism for adjustable installation of band plate-like members facilitates the separate adjustment of a cylindrical mirror in the normal direction of the reflecting face of the mirror, in a direction intersecting the normal direction, and the orientation of the ... | 05/23/2006 |
| 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 |
| 6950084 | Image display medium and image forming apparatus An image display medium capable of providing an image display with less change in the image density, with less change in the uniformness of the density and at stable density contrast even after repetitive rewriting over a long period of time, and an image forming ap... | 09/27/2005 |
| 6900789 | Reversible image display medium Disclosed is a reversible image display medium which can be repeatedly used and can display high quality images, in which cells between the two substrates accommodate a dry developer containing at least two kinds of frictionally chargeable dry developing particles h... | 05/31/2005 |
| 6353469 | Photographic image acquisition device The photoelectric scanning device for original images contained on a photographic film has a film platform for the film, for temporarily holding the original images contained on the film in a respectively defined scanning position; a light source for illu... | 03/05/2002 |
| 6207331 | Aqueous image recording method for electrochemically depositing an image forming material The image recording process comprises the steps of preparing an aqueous coloring material liquid by dissolving or dispersing fine particles of a coloring material in an aqueous liquid, disposing an image supporting member and a counter electrode opposite ... | 03/27/2001 |
| 5631727 | Image forming apparatus having discharging means using light source actuated prior to latent image formation An image forming apparatus includes an electrophotographic photosensitive member movable along an endless path; a charger for charging the photosensitive member; an optical device for projecting light information on the photosensitive member to form an el... | 05/20/1997 |
| 5563694 | Printer apparatus for forming an embossed image An apparatus performs emboss-printing. The apparatus forms an image on a print supporting member, such as a paper sheet, by using a powder printing member. The charge characteristics of the image and the print supporting member are different from each oth... | 10/08/1996 |
| 5514269 | Dual separator purification system A dual separator purification system and method for removing particulate as well as ionic contaminants from liquids is disclosed. The present invention is particularly useful in the electrostatic printing industry. The system comprises two disparate separ... | 05/07/1996 |
| 5151741 | Electrophoretic imaging device An electrophoretic imaging device includes an electrosensitive layer; an insulating body arranged to confront the electrosensitive layer; a developing solution filled between the electrosensitive layer and the insulating body, with the developing solution... | 09/29/1992 |
| 4982237 | Photoelectrophoretic printing machine A photoelectrophoretic imaging apparatus in which a disposable, electrically biased blocking web has a portion thereof in contact with a moving heated member. A disposable imaging web, electrically biased to a polarity opposite to the polarity of the bloc... | 01/01/1991 |
| 4666577 | Method of recording electrophoretic image pattern In a method of printing on a test report a pattern of fraction images of various kinds of proteins contained in a serum sample, an electrophoretic signal obtained by photoelectrically scanning a substrate bearing electrophoretic images is sampled to deriv... | 05/19/1987 |
| 4419005 | Imaging method and apparatus An electrostatic method of making transparencies and apparatus for practicing said method. An endless electrophotographic belt is charged, imaged and toned with a liquid toner suspension. The belt with the toned image is brought into close proximity to a ... | 12/06/1983 |
| 4419004 | Method and apparatus for making transparencies electrostatically An electrostatic method of making transparencies and apparatus for practicing said method. An endless electrophotographic belt is charged, imaged and toned with a liquid toner suspension. The belt with the toned image is brought into close proximity to a ... | 12/06/1983 |
| 4413898 | Photoelectrophoretic duplex imaging apparatus and method Duplex photoelectrophoretic imaging is implemented with apparatus of the kind having first and second electrodes movable along respective endless paths and cooperatively forming an imaging nip by: (1) first forming a first suspension image on the first el... | 11/08/1983 |
| 4357096 | Dispersion supply apparatus for photoelectrophoretic migration imaging Migration imaging apparatus of the kind using a photoelectrophoretic dispersion and having an electrode moveable along an endless operative path past dispersion application and imaging zones features improved dispersion applicator structure comprising a f... | 11/02/1982 |
| 4264427 | Apparatus for developing electrostatically charged sheet-like carriers of latent images Latent images on sheet-like carriers are developd by attracting that side of a carrier which faces away from the image to the convex external surface of a first support which constitutes a portion of or an entire hollow drum and is rotatable in at least o... | 04/28/1981 |
| 4202619 | Electrophotographic apparatus Apparatus for imaging electrophotographic film which has a short focal length optical gate for focusing a monochromatic light pattern onto the photoconductive layer of electrostatically charged film. The gate transmits and focuses the imaging light onto t... | 05/13/1980 |
| 4179209 | Multicolor line screen In photoelectrophoretic imaging, a novel multicolor line or cross line filter element and method for maintaining color balance wherein the filter grid comprises a plurality of yellow, cyan and magenta color segments or their complementary colors of contro... | 12/18/1979 |
| 4179290 | Photoelectrophoretic photography process involving dual corona treatments of opposite polarity A photoelectrophoretic image-forming process utilizing a pair of electrodes with at least one of the electrodes being transparent and at least one of the electrodes having an electrically insulating surface, which comprises the following steps of: (1) for... | 12/18/1979 |
| 4169672 | Method and apparatus for photoelectrophoretic-color-process copying A first and second electrode web, of which at least one is transparent, are transported along respective paths both passing through an exposure station. A toner applicator upstream of the exposure station applies to the first web a uniform layer of toner ... | 10/02/1979 |
| 4168118 | Electronic imaging apparatus using multicolor electrophotosensitive particles Electronically controlled imaging with a multicolor mixture of photoconductive particles is effected in a single exposure cycle by provision of an addressable electrode array which is energized selectively in imagewise timed relation. The control device f... | 09/18/1979 |
| 4130359 | Electrophoretic migration imaging apparatus and method utilizing enlarged migration environment Electrophoretic migration imaging apparatus and method of the type using electrophotosensitive pigment particles are improved, e.g., as to image density and background, by providing an enlarged migration environment for the imaged electrode. In one embodi... | 12/19/1978 |
| 4125322 | Electrophotosensitive migration imaging apparatus and method Improved migration imaging techniques and apparatus utilizing a mixture of multicolor electrophotosensitive particles are achieved by exposure of the mixture, between electrodes which create a migration-inducing field, sequentially to the color separation... | 11/14/1978 |
| 4084896 | Photoelectrophoretic web imaging apparatus A photoelectrophoretic imaging machine for producing, in a preferred embodiment, full color copies from opaque originals or, alternatively, copies from transparencies. In a preferred embodiment, the formation of photoelectrophoretic images occurs between ... | 04/18/1978 |
| 4049343 | Combination imaging and grounding roller An imaging or transfer roller comprising mechanism to couple the roller to a ground potential close to the imaging or transfer zone, is provided. The roller includes insulator members concentric with the roller shaft and conductive sleeves on the ends of ... | 09/20/1977 |
| 4043655 | Photoelectrophoretic image reproduction device A photoelectrophoretic image reproduction device wherein a suspension of electrically photosensitive particles in a fluid is provided between two transparent conductive plates. Exposure of the suspension to a light image while field is applied between the... | 08/23/1977 |
| 4043654 | Display system A display device which responds to a light image to form a viewable image. The system is sealed and is filled with a fluid carrying a dilute suspension of particles between electrodes. A photoconductive layer is used on one electrode. Imagewise illuminati... | 08/23/1977 |
| 4032226 | Photoimmobilized electrophoretic recording An electrophoretic migration imaging process, apparatus, and materials useful therein are disclosed. Electrically photosensitive particles, at least some of which bear a positive polarity electrostatic charge, are disposed between two spaced electrodes. O... | 06/28/1977 |
| 4023968 | Photoelectrophoretic color imaging process in which back migration is eliminated In an electrophoretic reproduction process wherein a colored reproduction of an original is obtained by sequentially electrophoretically generating at least two visible monochromatic images, and superimposing said images in registry upon a copy web to for... | 05/17/1977 |
| 4019816 | Coating system having a composite applicator assembly provided with a reciprocating blade Coating applicator system comprising a stationary blade and a reciprocating applicator blade. A quantity of photoelectrophoretic ink is supplied to the surface of the stationary blade when the applicator plate is cammed out. When the applicator plate is c... | 04/26/1977 |
| 4009466 | Character coding and recognition system Coding of a group of characters for recognition by a machine and by a human viewer is provided by coloring each character with a predetermined plurality of colors arranged in predetermined locations within a character configuration. Each character configu... | 02/22/1977 |
| 4006982 | Photoelectrophoretic concurrent process cycling A photoelectrophoretic imaging machine for producing, in a preferred embodiment, full color copies from opaque originals or, alternatively, copies from transparencies. station passing the sandwich In a preferred embodiment, the formation of photoelectrophoreti... | 02/08/1977 |
| 3989367 | Apparatus for contacting a roller to a surface to be contacted A roller and mount assembly contained on a movable carriage, the mount adapted to allow the roller to pivot in at least one major direction in response to non-uniform transverse contact between the roller surface and the surface to be contacted.... | 11/02/1976 |
| 3989366 | Photoelectrophoretic imaging apparatus having a device for increasing the friction force between webs A photoelectrophoretic imaging machine for producing, in a preferred embodiment, full color copies from opaque originals or, alternatively, copies from transparencies. In a preferred embodiment, the formation of photoelectrophoretic images occur between t... | 11/02/1976 |
| 3989365 | Motion compensation for bead bypass A system for compensating for motion during separation of a web from another surface to enable a bead of accumulated material built up at the line of contact between the web and the other surface to pass therebetween without changing the web velocity. In ... | 11/02/1976 |
| 3988060 | Bead bypass speed reduction A system for separating one surface, preferably a web, from another surface to enable a bead of accumulated material built up at the line of contact between the two surfaces to pass therebetween. During the separation period, the advancing velocity of at ... | 10/26/1976 |
