Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7220525 | Secure imaging toner and methods of forming and using the same A toner for printing documents that are difficult to chemically or physically forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner includes a colorant for printing an image on a surface of a document ... | 05/22/2007 |
| 7220524 | System and method for producing secure toner-based images A system and a method for printing a secure document that is difficult to forge and readily easy to visually verify are disclosed. The system includes a colorant for printing an image on a surface of a document, a dye for forming a latent version of the image undern... | 05/22/2007 |
| 7071960 | Image forming apparatus Electron generating devices and LED arrays are arranged in a surrounding area of a photosensitive drum. The electron generating devices are located downstream of a cleaner and upstream of a developing unit with respect to a turning direction of the photosensitive dr... | 07/04/2006 |
| 6025857 | Photosensitive member and electrostatic information recording method A photosensitive member which has an electrode provided on the front side and a photoconductive layer stacked on the electrode, the photosensitive member being disposed face-to-face with an electrostatic information recording medium that includes a charge... | 02/15/2000 |
| 5862443 | Electrostatic recording apparatus having a floating electrode on a photoelectric transfer member An electrostatic recording apparatus 1 for forming an electrostatic image on an electric charge carrying member 2 comprises a photoelectric transfer member 14 spaced from the electric charge carrying member 2, a floating electrode 16 provided on a first s... | 01/19/1999 |
| 5666598 | Image forming method and apparatus using energy beam impingement on image forming particles to move the same A high-speed image forming method and apparatus is capable of directly controlling a toner by the force of an energy beam. Selected toner particles in a mass of toner adhering to the surface of a transparent drum are irradiated with a laser beam emitted b... | 09/09/1997 |
| 5298947 | Process for recording images on an electrostatic information recording medium with delayed disconnection of charge accumulation voltage The present invention provides an image-recording process wherein the voltage applied between a photosensitive member 2 and electrostatic information recording medium 1 is put off after the lapse of a given time from the closing of an exposure shutter 13.... | 03/29/1994 |
| 5161233 | Method for recording and reproducing information, apparatus therefor and recording medium In the information recording an reproducing method and apparatus according to the present invention, a piece of picture image information is recorded as an analog quantity or a digital quantity an information carrying medium in a planar manner at a high d... | 11/03/1992 |
| 4407918 | Electrophotographic process and apparatus for making plural copies from a single image A photosensitive member is formed by applying on an electrically conductive substrate, a first photoconductive layer sensitive to a visible light, an insulating charge retentive layer, and a second photoconductive layer sensitive to ultraviolet light, suc... | 10/04/1983 |
| 4155640 | High speed electrophotographic imaging system Electrophotographic medium which comprises a transparent substrate, ohmic layer and coating of photoconductive material, all of which form a modulating structure for the radiant energy that is adapted to be projected through the substrate; a dielectric la... | 05/22/1979 |
| 4076405 | Liquid ink imaging system An electrostatographic imaging apparatus is disclosed. The imaging apparatus includes a photoconductor assembly; means for positioning the inner surface of a dielectric web against the photoconductor whereby an air gap is formed between the photoconductor... | 02/28/1978 |
| 4069759 | Light and heat formation of conductive image printing plate A master for electrostatic printing comprises a layer composed of conductive silver image portion containing metallic silver grains and a non-silver image portion having an electric resistance sufficient to retain electrostatic charge. The image formed by... | 01/24/1978 |
| 4056314 | Liquid ink imaging system An electrostatographic imaging apparatus is disclosed. The imaging apparatus includes a photoconductor assembly; means for positioning the inner surface of a dielectric web against the photoconductor whereby an air gap is formed between the photoconductor... | 11/01/1977 |
| 4050804 | Liquid ink imaging system An electrostatographic imaging apparatus is disclosed. The imaging apparatus includes a photoconductor assembly; means for positioning the inner surface of a dielectric web against the photoconductor whereby an air gap is formed between the photoconductor... | 09/27/1977 |
| 4023895 | Electrostatographic apparatus An improved method for varying the Gamma in a TESI electrostatic imaging system is disclosed which provides for positioning a surface of a photoconductive body and a surface of a dielectric body in virtual contact whereby an air gap exists between a porti... | 05/17/1977 |
| 4021108 | Electrophotographic copying apparatus In an electrophotographic copying apparatus of a type in which an electrostatic latent image of an original to be copied is formed, through suitable illumination means, on a dielectric surface of a transfer material or copy paper held under pressure betwe... | 05/03/1977 |
