Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7304660 | Optical beam scanning device and diaphragm device capable of adjusting light quantity distribution An optical beam scanning device of the present invention has a light source, a deflection reflecting surface for deflecting to scan light from the light source on a recording medium, and a diaphragm device which is provided between the light source and the deflectio... | 12/04/2007 |
| 6853816 | Image forming apparatus and method for adjusting magnification of image information An image forming apparatus includes, a first speed decision unit which decides the driving speed of a drive source of a unit for printing, a magnification adjustment unit which adjusts the magnification of image information by changing the speed of the first speed d... | 02/08/2005 |
| 6032009 | Image reading apparatus In an image reading apparatus, an image is illuminated to be guided as a light beam to a photosensitive drum through an image forming lens. Light amount correcting members are attached to a movable member movably attached relatively to the image forming l... | 02/29/2000 |
| 6025933 | Image pickup apparatus According to an image pickup apparatus of this invention, a light source illuminates an object, an image pickup unit picks up an image of the illuminated object, an amplifier circuit amplifies the output signal for the image pickup unit, and a control uni... | 02/15/2000 |
| 5436702 | Means for exposing original on image forming apparatus to provide uniform copies An image forming-apparatus of the present invention includes a charging device for applying a first potential and a second potential to a photosensitive drum, a keyboard for inputting a magnification of a copy image to be formed on the photosensitive drum... | 07/25/1995 |
| 5428425 | Automatic density adjusting device in copying machine In an automatic density adjusting device in a copying machine, the width of variation in exposure intensity in relation to the change in a density correction value or magnification manually set is set to a large width if a document is dark, while being se... | 06/27/1995 |
| 5267000 | Light amount controller for use in an image forming apparatus A variable magnification electrophotographic image forming apparatus is provided with a controller for the light emission amount of the exposure lamp so as to attain a desired toner image density. The controller includes a calculator for calculating the l... | 11/30/1993 |
| 4821068 | Image forming apparatus An image formation apparatus has an image forming section including an optical system for forming an image corresponding to an image of an original, a potential sensor for measuring a surface potential of a photosensitive drum for forming a latent image t... | 04/11/1989 |
| 4702590 | Image density control apparatus An image forming apparatus has a detector for detecting an image density of an original, a processing unit for forming an image, and a control unit for controlling an image forming condition of the processing unit. The control unit non-linearly controls a... | 10/27/1987 |
| 4629308 | Lens and shutter positioning mechanism for variable-magnification copier Apparatus for repositioning the lens of a variable-magnification electrophotographic copier to change the image-side path length for a different magnification ratio and for concomitantly adjusting the shutter to compensate for the changed image-side path ... | 12/16/1986 |
| 4620234 | Electronic visual image forming apparatus An image forming apparatus according to the present invention is provided with a document table provided on a housing for resting a document thereon; an exposure lamp provided under the document table for exposing the document rested on the document table... | 10/28/1986 |
| 4619520 | Variable magnification electrophotographic copying apparatus An image forming apparatus includes magnification selector for setting magnification of an image to be formed, an image forming device for forming an image in the magnification set by said magnification selector, automatic density regulator for automatica... | 10/28/1986 |
| 4582418 | Variable magnification electrostatic copying apparatus A variable magnification electrostatic copying apparatus includes a stationary transparent plate for placing thereon a document to be copied, an optical system including a first reflecting mirror assembly adapted to be moved reciprocally along the transpa... | 04/15/1986 |
| 4573787 | Exposure lamp control for image forming apparatus In a copy machine with a variable copy magnification, light reflected from a document, which is exposed by an exposure lamp, is led to a photosensitive drum to form thereon a copy image of a predetermined size and also led to a photo detecting circuit to ... | 03/04/1986 |
| 4571062 | Electrostatic copying process and apparatus An electrostatic copying process and apparatus capable of forming copies in at least two different ratios. The formation of a copied image involves exposure scanning of the image of an original document and projecting it on a photosensitive member through... | 02/18/1986 |
| 4568170 | Supporting frame for a variable ratio electrostatic copying apparatus An electrostatic copying process and apparatus capable of forming copies in at least two different ratios. The formation of a copied image involves exposure scanning of the image of an original document and projecting it on a photosensitive member through... | 02/04/1986 |
| 4436410 | Image forming apparatus A color image forming apparatus having a variable magnification ratio copy function has a controller which controls a voltage applied to an exposure lamp in accordance with a given magnification ratio and a selected one of a plurality of color filters whi... | 03/13/1984 |
| 4335953 | Variable magnification copying apparatus The ratio of the length of the light path between an original to be copied and a lens to the length of the light path between the lens and a photosensitive medium is changed by the copying magnification changing operation. That is, for example, the lens i... | 06/22/1982 |
| 4279497 | Electrostatic copying machine A variable magnification optical system focusses an image of a portion of an original document on a platen through a variable aperture or slit onto a rotating photoconductive drum. Various members of the optical system or the document are moved at a speed... | 07/21/1981 |
| 4192609 | Method for effecting registration for a copying apparatus The copying apparatus has a magnification ratio varying device, and a photosensitive member, in motion, is exposed to an optical image of an original, by slit exposing, to form an electrostatic latent image thereon. The scanning velocity of the original i... | 03/11/1980 |
| 4125323 | Electrophotographic copying machine of a multi-size copying type The electrophotographic copying machine of the present disclosure includes a slit mechanism having two different forms of slits, an optical device to project the image of the original to be copied onto a photoreceptor surface a shifting mechanism for shif... | 11/14/1978 |
| 4040733 | Variable magnification slitwise exposure process and apparatus therefor for use with electrophotographic copying machine The exposure process and apparatus are for use with electrophotographic copying machines of the type in which a photosensitive surface is moved at a constant rate at any magnification selected. Upon changing from a magnification of unity to a magnificatio... | 08/09/1977 |
