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| Number | Title | Issue Date |
| 5115273 | Image forming apparatus having a detachable memory An image forming apparatus from which an external memory medium storing an image formation mode operable in various kinds of image forming apparatus and being adapted for use in various kinds of image forming apparatus on a common basis is detachable. The... | 05/19/1992 |
| 5073464 | Method of processing electrophotographic lithographic printing plate precursors A method for processing an electrophotographic lithographic printing precursor comprising a photoconductive layer provided on a conductive substrate, the photoconductive layer having a toner image formed thereon by an electrophotographic process, comprisi... | 12/17/1991 |
| 5049924 | Image forming apparatus An image forming apparatus provided with a sensor for detecting a sheet transport problem. When a sheet transport problem occurs before a sheet reaches an image forming section, the sheet is returned to a sheet feeding section, and when a transport proble... | 09/17/1991 |
| 5049906 | Fixing process controller for electrophotographic recorder A fixing process controller of an electrophotographic recorder controls a fixing unit which fixes an unfixed toner image on a recording medium by passing the medium between two fixing rollers. The controller comprises means for detecting the thickness of ... | 09/17/1991 |
| 5043864 | Image forming apparatus An image forming apparatus includes an image forming unit for forming an image on a recording medium, a command unit for commanding image forming conditions, a first switch for connecting a power source to the apparatus, a first director for detecting an ... | 08/27/1991 |
| 5043744 | Raster scanner including scanning beam tilt correction A raster output scanner in which a movable scanning element scans a high intensity beam across a movable imaging member to record images thereon. The velocity of the imaging member is controlled relative to the beam, and the tilt of the beam is adjusted r... | 08/27/1991 |
| 5023631 | Stopping process control device A device for controlling a process of stopping a laser printer having a printing unit including a sensitive drum and a fixing unit. The stopping process control device is provided with a detecting unit for detecting errors occurring in the laser printer, ... | 06/11/1991 |
| 4979386 | Developer roll adjustment indicator device A developer roll adjustment indicator device for use in association with a xerographic printer has an indicator plate with a collar that is removably secured to the end of the print drum shaft. A pointer made of a material having a magnetic attraction to ... | 12/25/1990 |
| 4965613 | Page printer with machine-readable-character-based controls A data printer has the ability to print machine-readable information and, further instream, the ability to read and analyze such information. Results of that analysis are reporated back to a job control processor which, according to the analysis, monitors... | 10/23/1990 |
| 4937664 | Image forming apparatus An image forming apparatus has a plurality of image forming stations capable of forming different images which are to be correctly registered and superimposed. Elimination of possible image misregistration in each image station is executed on the basis of... | 06/26/1990 |
| 4937626 | Image forming apparatus An image forming apparatus includes a developing unit storage device including a plurality of storage sections capable of storing developing units and a first detection unit for detecting the presence/absence and types of the developing units in the plura... | 06/26/1990 |
| 4926310 | Image forming apparatus A control apparatus including a plurality of loads for processing, a controller for controlling operation of the loads, the controller including a first memory having a microprogram stored therein to operate the loads sequentially, a second memory for sto... | 05/15/1990 |
| 4910551 | Portable image forming apparatus An image forming apparatus with a position detection capability to prevent an image forming operation starting signal being generated by mistake to thereby start the image forming operation when an image forming apparatus is not in its normal installed st... | 03/20/1990 |
| 4903051 | Image forming apparatus for controlling developer to be replenished in accordance with density of developer A laser printer includes a plurality of lenses and mirrors for scanning a laser beam to form an optical image on a photoconductive drum, a developing unit for storing a developer for developing an electrostatic latent image formed on the drum by the plura... | 02/20/1990 |
| 4860059 | Method of setting color copying conditions A method of setting the copying conditions of a color copying machine includes the steps of scanning a test chart having density patterns in three primary colors, to detect three color components of the light reflected from the test chart, based on which ... | 08/22/1989 |
| 4855766 | Image recording apparatus detecting and controlling image contrast Image recording capable of controlling image recording condition in response to image contrast and sensitivity characteristics of a recording member includes a detector for detecting the surface condition of the recording member and control apparatus for ... | 08/08/1989 |
| 4839698 | Copying apparatus An image processing apparatus including a plurality of process devices for processing an image. A first control device is provided for controlling at least a first one of the plural process devices in accordance with a control program for an image process... | 06/13/1989 |
| 4835577 | Negative/positive microfilm discriminating system A negative-positive microfilm discriminating system for use in a microfilm reader/printer apparatus, comprising a sensor for detecting the densities at a plurality of spots within an image zone of a microfilm strip, and a control circuit for discarding a ... | 05/30/1989 |
| 4831418 | Exposure control device of copying machine An exposure control device of a copying machine is provided with a white member at an end portion of an original document holding surface of a platen so as to prevent adhesion of toners to a top end portion of the copying paper. While a scanning optical s... | 05/16/1989 |
| 4830501 | Method of classifying color originals and apparatus thereof A method and apparatus for classifying color originals into at least color photographs and other colored articles such as color printed articles, letters, handwriting, art graphics or the like by detecting the reflection densities of divisions into which ... | 05/16/1989 |
| 4800337 | Method and means for determining a measure of the surface potential of a medium charged by means of a corona charging device A medium to be charged is conveyed past a corona charging device, so that charge emitted by the corona charging device is deposited on the medium surface. A measuring wire disposed between the medium and the corona charging device, but positioned near the... | 01/24/1989 |
| 4796060 | Automatic exposure device An automatic exposure device for a photocopying machine. A signal indicative of exposure light intensity and a signal indicative of the received light intensity from an original are obtained by initially exposing two types of original documents the densit... | 01/03/1989 |
| 4779121 | Document scanning device A document scanning device such as a copier has defined within itself a point at which the brightness of an original document is detected and a separate point at which the document is scanned. The level of light exposure given to the document is controlle... | 10/18/1988 |
| 4778740 | Color electrophotographic method and apparatus Disclosed is a color electrophotographic method of forming a plurality of images of different colors on a photosensitive medium by repetitions of a series of operations including steps for charging, exposure and development. An exposure of photosensitive ... | 10/18/1988 |
| 4758860 | Image forming apparatus An image forming apparatus which uses process sequence control for forming images using several computers includes circuits for detecting abnormal conditions in either the computer hardware or program sequence. Instruction signals for image formation are ... | 07/19/1988 |
| 4728984 | Data handling and archiving system A system for enhancing the use of digitized documents as information transmitting and storage objects in connection with an electronic printer having an image input scanner for scanning documents and converting the image content to image signals. In one e... | 03/01/1988 |
| 4728991 | Image forming apparatus An image forming apparatus such as a laser beam printer has a laser mechanism, an optical system for forming a latent image on a photosensitive drum, a separation charge eliminator for separating a transfer material with a toner image transferred thereont... | 03/01/1988 |
| 4710785 | Process control for electrostatographic machine An electrostatographic machine is disclosed with at least one adjustable process control parameter. The machine receives and electronically stores electrical image information signals of an original. A reproduction of the original is created using the rec... | 12/01/1987 |
| 4684235 | Image forming apparatus An image forming apparatus such as an electronic copier and the like, particularly constructed such that the apparatus can be raised to a right angle from the posture in the normal operation for removing a jammed paper through the exposed bottom thereof o... | 08/04/1987 |
| 4670647 | Dirt insensitive optical paper path sensor The present invention is concerned with a self-adjusting document sensor compensating for degradation of the sensor system. A suitable light source and a detector are provided, the output of the detector being fed into an amplifier whose gain depends upon... | 06/02/1987 |
| 4669862 | Program controlled image forming apparatus An image forming apparatus comprises a rotating drum, a plurality of processing means including means for charging and discharging the rotating drum, a pulse generator for controlling timing of at least one of the processing means and means for starting t... | 06/02/1987 |
| 4659214 | Document detecting apparatus A document detecting apparatus for a copying machine, comprising a photo-sensor having a light projecting device which emits a measuring light from an inside of to an outside of a copying machine through an original glass plate, and a light receiving devi... | 04/21/1987 |
| 4617661 | Electronic copying machine Disclosed is an electronic copying machine comprising detecting means for detecting an operating status of a copying machine main body, audio information storage means for storing predetermined audio information, audio information synthesizing means for r... | 10/14/1986 |
| 4589080 | Apparatus and method for predicting failure in a copier's paper path Selected points in a copier are monitored by signal lines connected to a computer. If a signal is detected on a signal line, the time of occurrence is stored in the computer's memory at a location associated with the point that caused the signal. Eventual... | 05/13/1986 |
| 4586034 | Color coded copier display A display device has a display panel in which patterns are impressed in conformity to the layout of a master instrument. With this display device, a pattern indicating a prescribed condition of the master instrument which is to be detected and a pattern r... | 04/29/1986 |
| 4542985 | Image formation apparatus An image formation apparatus such as a copying machine has an image forming section including an optical system, an AE mode selection key for setting the automatic density adjustment mode, UP and DOWN keys for manually adjusting the density level, an inte... | 09/24/1985 |
| 4540269 | Opening detecting device of a copy document cover suitable for electrophotographic copying machine An electrophotographic copying machine having a device for detecting the opening and the closing of a document cover on a document table. The device contains a light emitting element, a light receiving element, a reflective sheet and a detection circuit. ... | 09/10/1985 |
| 4520354 | Display device for copying apparatus A display for a copying apparatus includes a display element for indicating the operating conditions of the copying apparatus. The display has a number of detectors for detecting each of a group of operating conditions and an energizer for energizing the ... | 05/28/1985 |
| 4510491 | Display device for photocopiers A display device 10 consisting of five cells of seven segments each, is used in a photocopying machine in order to indicate normal operation and certain abnormal situations. The latter are indicated by means of messages in plain language, represented by c... | 04/09/1985 |
| 4477178 | Image forming apparatus An image forming apparatus includes a process input device for setting various data for image formation, process unit for making images on a recording medium repeatedly in accordance with the data set by the input device, detection devices for detecting a... | 10/16/1984 |
