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| Number | Title | Issue Date |
| 5376990 | Method and apparatus for promoting uniform aging and extending photoconductor life An electrophotographic imaging device including an photoconductive imaging member having a surface extending approximate to devices generating life degrading contaminants. The printing machine includes a driving unit which continues to drive the imaging m... | 12/27/1994 |
| 5325157 | Reset data creation mechanism for photoconductive drum counter A detection mechanism for detecting an installation of a detachable member to a main body, includes a movable member provided on the detachable member and being movable between a first position and a second position. The movable member is set in the first... | 06/28/1994 |
| 5291228 | Image formation apparatus having tuck prevention control means In an image formation apparatus, a drum tuck prevention element prevents a cut paper, which is a transfer material, which is an image holding means, from being wound on a photosensitive drum with an electrostatic state. The drum tuck prevention element de... | 03/01/1994 |
| 5278612 | Apparatus for judging life of photoconductor An image forming apparatus has a charging roller disposed in contact with a photoconductor having a photoconducting layer for charging the surface of the photoconductor, and a photoconductor life judging device including an element for detecting the chang... | 01/11/1994 |
| 5225873 | Photoreceptor end of life predictor An improved method and apparatus for predicting the end of life of a photoreceptor, first records sampled data, then processes the data in order to interpolate the photoreceptor's end of life. Increased prediction accuracy is realized since both global ph... | 07/06/1993 |
| 5220373 | Electrophotographic process control device using a neural network for estimating states of the device An electrophotographic process control device for an electrophotographic image forming apparatus. A neural network is incorporated in the control device for estimating the state of the image forming unit. Parameters of the kind which should not be frequen... | 06/15/1993 |
| 5216464 | Image forming apparatus having replaceable element which is replaced based on frequency of use An image forming apparatus which includes a replaceable element which is replaced in predetermined amount of use and predicting apparatus for predicting the time when the predetermined amount of use of the element is to be reached. The predicting apparatu... | 06/01/1993 |
| 5173733 | Method and apparatus for disabling defective sections on a photoreceptor in an electrophotographic printer In an electrophotographic apparatus, electrostatic latent images are formed on an endless photoreceptor belt for subsequent development by toner particles and transfer of the toner image to output sheets. The belt has at least two identifiable sections ar... | 12/22/1992 |
| 5160967 | Image forming apparatus with layer thinning detection An apparatus for forming an image of a document, capable of charging a photoconductor by using a charging device includes a unit for detecting a value of a flowing current into the photoconductor, a unit for comparing the value of the flowing current with... | 11/03/1992 |
| 5159388 | Image forming apparatus An image forming apparatus comprising a charging section for uniformly charging a surface of a photoconductive body; an image forming section for forming an image on the photoconductive body charged by the charging section; a detecting section for detecti... | 10/27/1992 |
| 5138380 | Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus A potential of a reference potential measure section is set to a desired value of a potential of a drum surface (charge receptive surface) such that a potential of the reference potential measure section and a potential of the charge receptive surface are... | 08/11/1992 |
| 5101233 | Electrophotographic recording apparatus indicating a wear rate for consumable parts In an electrophotographic recording device which includes a number of consumable parts, there is provided a first memory for storing a currently integrated total number of prints, and a number of prints at replacement of each consumable part. A second mem... | 03/31/1992 |
| 5008711 | Image forming apparatus An image forming apparatus of the type including a plurality of process means for developing an electrostatic latent image provided on an image carrier to produce a visible image, transferring the visible image to a transfer material, and cleaning the ima... | 04/16/1991 |
| 4855754 | Control device for an image recorder A control system for a laser printer and other image recorders stores history data including the number of prints produced by a photoconductive element and occurrences of various kinds of failures, and displays the history data at suitable timings. The co... | 08/08/1989 |
| 4851875 | Identification and monitoring of image forming process units An image forming apparatus including a main body and a processing unit detachably mounted in the main body. The processing unit includes at least one of an image bearing member and developing device. The number of image forming repetitions of the processi... | 07/25/1989 |
| 4585327 | Service life determining system for image bearing member of copying apparatus and the like A service life determining system for determining the service life of an image bearing member or a magazine containing an image bearing member removably mounted on a main body of a copying apparatus and the like by counting the number of times of use or a... | 04/29/1986 |
| 4583834 | Copying apparatus A plurality of copying machines (12), (13), (14) are connected to a computer (39). Each copying machine (12), (13), (14) comprises sensor means (16), (17), (18), (19), (21), (22), (23), (24) for sensing various operating parameters thereof such as a total... | 04/22/1986 |
| 4477180 | Photoconductor advance system for copiers and the like Photoconductor panels are automatically replaced in an electrophotographic copier or printer after it is determined that the panels require replacement and the machine has entered into a run-out mode. The run-out mode is defined as the time period at the ... | 10/16/1984 |
| 4375330 | Control circuit in an electrophotographic copying machine In a copying machine comprising a photoconductive belt (5) that is moved past a number of processing stations in order to make copies, the belt (5) is divided relative to a reference point into a plurality of imaging sections each of which is capable of c... | 03/01/1983 |
| 4084901 | Copying machine A copying machine in which a photo-receptor sheet, wound between supply and take-up reels, serves as an intermediate web which is charged, exposed and developed with toner; the toner then being transferred to copy paper. The photo-receptor sheet is advanc... | 04/18/1978 |
