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| Number | Title | Issue Date |
| 5489935 | Laser printer power saver A system using a printer with a fuser-heater has control means for turning off the fuser-heater during times when no printing is required, while leaving the rest of the printing system operable. Time between print requests is monitored, and the fuser-heat... | 02/06/1996 |
| 5412480 | Image forming apparatus with fixer temperature control An image forming apparatus comprises includes a feeder means and recorder. The feeder feeds a sheet of recording paper to a predetermined position in response to a spare paper feed signal instructing the feeding of the sheet of recording paper to the pred... | 05/02/1995 |
| 5406361 | Circuit for controlling temperature of a fuser unit in a laser printer A system for controlling temperature of a fuser unit in an laser printing device, without central processor control, includes a converting circuit for generating a temperature dependent voltage indicative of a sensed temperature of a fusing unit, a determ... | 04/11/1995 |
| 5329343 | Temperature control method and fixing apparatus A temperature control method and apparatus for a fixing apparatus, in which a first roll contacting the back surface of a recording sheet and a second roll contacting the front surface of a recording sheet for fixing a recording sheet carrying a toner ima... | 07/12/1994 |
| 5321479 | Electrophotographic apparatus An electrophotographic apparatus is provided with a control device for controlling the heating temperature of the fixing unit in accordance with the detected result by use of a condition detection mechanism. The control device controls the fixing unit: (a... | 06/14/1994 |
| 5321478 | Image forming apparatus which can discriminate frequency of image forming operations An image forming apparatus includes an image forming unit for forming an undeveloped image on a recording material, heating fixing unit for fixing the undeveloped image on the recording material by heating. The heating fixing unit includes a heating membe... | 06/14/1994 |
| 5321481 | Fuser temperature and copy output controller An electrophotographic copy machine includes a system manager which controls the operation of the copy machine based on a plurality of performance levels corresponding to fuser copy quality characteristics, i.e., TPE, gloss and fuse fix. Each performance ... | 06/14/1994 |
| 5319428 | Color image forming apparatus In a color image forming apparatus provided with a fixing roller and a pressure roller equipped with a heater therein, which is in press contact with the fixing roller. The completion timing of warm-up of the fixing device is determined by the time at whi... | 06/07/1994 |
| 5307132 | Image forming apparatus having a controller for discharging air in response to a heating condition of an image fixing device An image forming apparatus include an image forming device for forming a toner image on a recording material. The image forming device includes an electrical discharger, a fixing device for fixing the toner image with heat, and a air discharging device fo... | 04/26/1994 |
| 5289248 | Fixing unit and image forming apparatus having the same A fixing unit includes a photosensitive drum for bearing an image, an image forming member for forming the image on the photosensitive drum, a transfer charger for transferring the image formed by the image forming member to paper, a heating roller having... | 02/22/1994 |
| 5287155 | Temperature control method for a fixing device A method of controlling the surface temperature of a heat roller included in a fixing device and having a heater therein by sensing it by a thermistor. The thermistor is held in contact with the heat roller during warm-up operation and in a standby condit... | 02/15/1994 |
| 5280328 | Image forming system having reduced wait time An image forming system includes an image former for forming a non-fixed image on a recording sheet, a heat fixer for thermally fixing the non-fixed image on the recording sheet, and an operation permitting signal output device for outputting a signal rep... | 01/18/1994 |
| 5247336 | Image fusing apparatus having heating and cooling devices A fusing apparatus for fusing toner images onto a substrate. The fusing apparatus includes a heated first fusing member, a second timing member and a fusing mix formed by the first and second members. A substrate carrying and unfused toner image on a firs... | 09/21/1993 |
| 5241349 | Image forming apparatus having a plurality of control modes of thermal fixing apparatus An image forming apparatus comprises a thermal fixing apparatus having a heat generating member and heat-fixing an image on paper, a section for discriminating a using frequency of the image forming apparatus, and a section for controlling a fixing temper... | 08/31/1993 |
| 5225871 | Control device for image forming equipment A control device incorporated in image forming equipment and having at least a main control unit and a slave control unit. The main and slave control units each has a CPU (Central Processing Unit) and a ROM (Read Only Memory) for storing image formation c... | 07/06/1993 |
| 5191375 | Fuser low power control Fixing of images by fuser roller (3) in printer (1) is delayed by control of paper feed clutch (7) when abnormally low power is determined during an earlier cold start or start from standby. Sensed temperature values from thermistor (9) are compared with ... | 03/02/1993 |
| 5160970 | Controllable fixing device for fixing a toner image into a sheet A press cam is driven when fixing rollers are rotated for a warm-up operation at the time the power is applied simultaneously with the timing a recording material is fed to a fixing roller whereby an oil coating roller is controlled to be brought in conta... | 11/03/1992 |
| 5109255 | Temperature control system A temperature control system is employed in a electrophotographic printer for controlling the temperature of a heat roller. In the system, the temperature of the heat roller is kept in a predetermined range of an operable range when printing is executed, ... | 04/28/1992 |
| 5073799 | Image forming apparatus which alters stand-by temperature of the fixing device according to toner color An image forming apparatus which can develop a latent image formed on a latent image bearing member with a selected one of a first toner and a second toner different from the first toner. A fixing member is provided for fixing a toner image, and includes ... | 12/17/1991 |
| 5051780 | Fusing temperature control device for a printer or similar apparatus An apparatus forms unfixed toner images on receiving sheets and fixes the images using a fuser having at least one heated roller. A temperature control means for the roller has a run set point and a standby set point. The apparatus monitors the formation ... | 09/24/1991 |
| 5040022 | Temperature control for a fixing apparatus Disclosed is a fixing apparatus wherein a print medium having an image transferred thereto is conveyed by rollers provided with a heat source, whereby the transferred image is fixed to the print medium. At least one of the fixing rollers has a hollow sect... | 08/13/1991 |
| 4996567 | Method of controlling fuser unit of image forming apparatus A method of controlling a fuser unit of an image-forming apparatus such as a laser printer, in a warming-up stage, so that excess mechanical and electrostatic stresses are not imposed on the process elements. The method includes the steps of: starting the... | 02/26/1991 |
| 4951096 | Self-calibrating temperature control device for a heated fuser roller A temperature control device, for controlling, at a desired set point, the temperature of an environment or member being heated or being cooled, is particularly suitable for controlling the temperature of a heated electrostatographic fuser roller. The dev... | 08/21/1990 |
| 4878092 | Method of controlling a fixing unit of an image forming apparatus A method of controlling a fixing unit which is installed in an electrophotographic copier, facsimile apparatus or like image forming apparatus and includes a fixing roller and a pressing roller. A secure fixing temperature of the fixing unit is selectivel... | 10/31/1989 |
| 4853739 | Illuminating device for image exposure An illuminating device for image exposure in an electrophotographic copying machine, which employs a fluorescent lamp whose voltage is variable as an illumination source and has signals to indicate when the copying machine is ready to make copies and to t... | 08/01/1989 |
| 4745436 | Copying machine A copying machine with a power saving mode that can be canceled automatically in response to any one of the operations relating to the start of the copying operation, such as placing a manuscript on the copy machine platen, closing a cover on a manuscript... | 05/17/1988 |
| 4737818 | Toner image fixing device A toner image fixing device to be incorporated into an electrophotographic copying machine or the like, comprises fixing rollers internally provided with heating means, temperature detecting means for detecting the respective surface temperatures of the f... | 04/12/1988 |
| 4714338 | Electrostatic copying apparatus An electrostatic copying apparatus includes a lower supporting frame, an upper supporting frame mounted on the lower supporting frame for pivotal movement between an open position and a closed position, a document placing assembly having a transparent pla... | 12/22/1987 |
| 4681423 | Copying machine having a control process to reduce copying time In an electrophotographic copying machine in which a warming up operation is performed before a copying operation is initiated. This warming up operation is for preliminarily warming up various devices such as a fixing device and a photoreceptor drum. In ... | 07/21/1987 |
| 4678316 | Image forming apparatus adapted to enter an interrupt copying mode and an energy saving mode A copying or printing machine including a microcomputer having a random access memory in which a set of coded signals may be written in and read out; a read only memory having a sequence control program for accomplishing a copying or printing operation; a... | 07/07/1987 |
| 4671643 | Controlling method of a copying machine A method for controlling a copying machine having a copying cycle and fusing device. The fusing device is formed of a rotatable heating roller and a press roller in mutually forcible contact with the heating roller, which fuses a toner image on a copying ... | 06/09/1987 |
| 4627714 | Recording apparatus with controlled power source for heat fusing device A recording apparatus such as a photocopier, includes a heat fusing device and a power source connected thereto via a power controller. The power controller controls the supply of power to the heat fusing device such that full power is supplied to the hea... | 12/09/1986 |
| 4618247 | Photoreceptor pre-initializing electrophotographic copying machine An electrophotographic copying machine comprises a copy-image forming member for enabling the machine to conduct a copy operation to provide a toner image onto a copy paper, a heat-fixing element responsive to the copy-forming member for heat-fixing the t... | 10/21/1986 |
| 4618245 | Image forming apparatus and attachment which together enter an energy saving mode A copying or printing machine connected with an attachment such as a sorter, including a microcomputer for controlling a copying or printing operation, a power supply for energizing the machine, and a power reducing device for reducing electric power to b... | 10/21/1986 |
| 4609278 | Heat fixing device A heat fixing device for use in a copying apparatus, including a heating roller, a pressing roller, an ambient temperature sensor for detecting ambient temperature of the copying apparatus, a decision device for making a decision as to whether or not the ... | 09/02/1986 |
| 4566783 | Fixing device The present invention relates to a fixing device comprising a curved heating plate which is heated by means of a temperature controlled electrical main heating system and an electrical stand-by heating system. The main heating system comprises two heating... | 01/28/1986 |
| 4540274 | Image forming apparatus The invention provides an image forming apparatus having a control device to control a fixer and a paper conveyor system to perform preheating of the fixer and driving of the conveyor system for a predetermined time interval immediately after power is sup... | 09/10/1985 |
| 4497568 | Image formation apparatus In image formation control apparatus having a process unit for forming an image on a recording medium and mechanisms for assisting in the image formation, there is provided a first controller for controlling the timing of the process unit. A second contro... | 02/05/1985 |
| 4480908 | Thermal fixing roller system in a copying machine A thermal fixing roller system includes a heater roller and a pressure roller between which a copy paper is driven to travel for fixing a toner image carried on the copy paper. A heater is disposed in the heater roller for maintaining the surface temperat... | 11/06/1984 |
| 4385826 | Toner image fixing device A fixing device provided with a heating roller having heating means, a pressure roller for fixing a toner image by transporting a toner image bearing member in cooperation with the heating roller, drive mechanism for rotating the heating roller and pressu... | 05/31/1983 |
