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| Number | Title | Issue Date |
| 7170679 | Optically active color filter An optically active color filter for controlling the color of light produced by a light source. The color filter includes an optically active device positioned between a linear polarizer and an adjustable position linear polarizer whose orientation can be controlled... | 01/30/2007 |
| 6972166 | Toner, process for producing a toner, image forming method and image forming apparatus An electrophotographic toner is formed as a blend of toner particles and external additives. The external additives include (1) first inorganic fine particles having an average primary particle size of 80-800 nm of oxide of a metal selected from the group consisting... | 12/06/2005 |
| 5805296 | Optical scanning apparatus including an image reading section and an image printing section that share a common optical system and a method of printing and reading an image using the common optical system An optical scanning apparatus includes a semiconductor laser, a polygonal mirror as a deflector for scanning a light beam from the laser, a photosensitive drum for forming an electrostatic latent image, a converging lens for converging the light beam from... | 09/08/1998 |
| 5798784 | Laser drawing apparatus featuring a beam separator supported by an adjusting means swingable about a rotating shaft A laser drawing apparatus is provided including, a first beam splitting element for splitting laser light emitted from a laser source into a plurality of beams, a second beam splitting element for splitting the beams split by the first beam splitting elem... | 08/25/1998 |
| 5122817 | Electrophotographic recorder using a modulated laser beam to scan the original An image forming apparatus comprising a laser beam radiating unit utilized as a light source, and an optical system that the surface of an original reflects a laser beam radiated from the radiating unit to project an image reflected from the original onto... | 06/16/1992 |
| 5017961 | Image forming apparatus with use of a laser beam An image forming apparatus includes a laser beam radiating unit utilized as a light source, and an optical system that the surface of an original reflects a laser beam radiated from the radiating unit to project an image reflected from the original onto a... | 05/21/1991 |
| 4697910 | Image processor An image-processing apparatus, can function as a copier and also as a printer, has first and second image-forming units, a switching unit and an output unit. When the first image-forming unit is selected by the switching unit, images are formed on a recor... | 10/06/1987 |
| 4575214 | Copier/laser-printer conversion A method of converting existing copiers to laser printer engines by externally attaching an apparatus to the copier with no significant alteration of the copier engine, and attachable in an easily removable manner. The apparatus consists of a laser togeth... | 03/11/1986 |
| 4477175 | Multi-function reproduction machine A multi-function printer employing a linear array of lenslets for transmitting, when in the COPY mode, image rays from the image original being copied to the moving photoreceptor of a xerographic system. To scan the image original, the platen is moved pas... | 10/16/1984 |
| 4397537 | Image forming method and apparatus An image combining system for forming on a recording medium combined images based on at least two different types of original information has the steps of modulating a light beam in accordance with electrical signal information, scanning an original by th... | 08/09/1983 |
| 4374617 | Multi-function document processor A rotating polygon-type laser scanning subsystem is integrated with a photocopying subsystem to provide a relatively high quality, economical and compact multi-function document processor. To optimize the performance of the document processor, the laser s... | 02/22/1983 |
| 4257701 | Image information recording apparatus In an image information recording apparatus, wherein a light beam is modulated by an information signal to effect recording on a recording medium, there is provided a light beam forming unit, a light beam modulator for modulating the light beam from the l... | 03/24/1981 |
| 4255040 | Positive overlay electronic xerographic printer Positive form overlays are used to make composite images with a positive mode xerographic printer having a laser scan exposure mechanism. The laser scan or electronic exposure mechanism uses an oscillating galvanometer mirror to sweep a scanning spot over... | 03/10/1981 |
| 4241990 | Multi-purpose optical data processor A multi-purpose optical data processor has shared optics for selective performing light/lens xerographic copying in accordance with a line-by-line scanning pattern and laser reading and writing in accordance with a raster scanning pattern. Among the laser... | 12/30/1980 |
