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| Number | Title | Issue Date |
| 4963926 | Electrostatic image forming apparatus with charge controller The following is in reference to the electrostatic copying machine with image formation apparatus using the photo conductor. The invention is to compute the electrifier voltage that is able to get the desired charge at the developing section by detecting the c... | 10/16/1990 |
| 4942431 | Image forming apparatus An image forming apparatus includes an image bearing member; a latent image forming device for forming a latent image on the image bearing member; a developing device for developing the latent image, including, a developer container for containing a devel... | 07/17/1990 |
| 4914476 | Device for displaying warm-up waiting time of image forming apparatus A device installed in a copier, facsimile apparatus or similar image forming apparatus of the type including a fixing unit displays a waiting time necessary for the warm-up of the apparatus. The device calculates an elevation rate of fixing temperature wi... | 04/03/1990 |
| 4912515 | Image forming apparatus An image forming apparatus includes a movable image bearing member, a device for sequentially forming on the image bearing member images corresponding to different color information, a device for transferring onto an image receiving material the images fo... | 03/27/1990 |
| 4888618 | Image forming apparatus having ambient condition detecting means An image forming apparatus includes a processor for processing image signals, an image forming system for forming images on recording mediums in accordance with the image signals processed by the processor, the image forming system being capable of formin... | 12/19/1989 |
| 4850118 | Humidity control for roll paper electrostatic plotters A humidifying system for maintaining the moisture content of the paper at a preferred level in an electrostatic plotter. The plotter has a paper supply compartment rotatably holding a horizontal roll of plotting paper where the paper passes from the roll ... | 07/25/1989 |
| 4816871 | Charging control apparatus for image carrier An image carrier carries an electrostatic latent image. A charger charges the image carrier to carry the electrostatic latent image. A high-voltage source supplies a high-voltage output to the charger for charging. A temperature detector detects the tempe... | 03/28/1989 |
| 4797707 | Image forming apparatus Present invention provides an image forming apparatus wherein a photosensitive member is subjected to optimum fatigue treatment in order to prevent the fluctuation of copying density and prevent fogging. Therefore, an image forming apparatus according to ... | 01/10/1989 |
| 4676627 | Image forming apparatus An image forming apparatus is of such a type that a developed image on an image bearing member is transferred to a transfer sheet and thereafter the transfer sheet is subjected to the action of a charge removing corona discharger, the above apparatus bein... | 06/30/1987 |
| 4669860 | Electrophotographic recorder controller A method and apparatus for improving the quality of recordings from electrophotographic recording apparatuses by calculating the surface charge remaining on the recording medium adjacent the development electrode and adjusting the voltage of the developme... | 06/02/1987 |
| 4626096 | Image forming apparatus for forming a visual image in accordance with image signals An image forming apparatus is used in conjunction with a signal generator for producing an image signal representing an image to be recorded. The apparatus includes a device for forming a visible image with visible material on an image bearing member. The... | 12/02/1986 |
| 4607936 | Electrophotographic apparatus comprising photosensitive layer of amorphous silicon type photoconductor Disclosed is an electrophotographic apparatus comprising a photosensitive drum comprising an amorphous silicon type photoconductor layer formed on an electroconductive substrate, a main charging mechanism for charging the surface of the drum with charges ... | 08/26/1986 |
| 4573788 | Image forming device An image forming device constructed with an image forming device, a memory device to store therein a plurality of programs for stable control of an image quality, and a device for selecting and executing one of the programs stored in the memory device. Th... | 03/04/1986 |
| 4536681 | Temperature compensated time exposure control circuit A temperature compensated control circuit in an electrophotographic copy machine having a machine "ready" portion for presenting a machine ready condition and with which an intermediate copy sheet is used for exposure to the output of a light source inclu... | 08/20/1985 |
| 4521103 | Electrophotographic reversal developing apparatus with control of developing electrode bias potential An electrophotographic reversal-developing apparatus according to this invention comprises first means for determining the temperature and humidity of the surroundings in which an electrophotosensitive material is put; and second means responsive to the s... | 06/04/1985 |
| 4508446 | Reproduction process control method A method for controlling an electrophotographic copying process in order to maintain the quality of copy images uniform as well as excellent even if the gamma characteristics of a photosensitive member including a photoconductive material such as AsSe or ... | 04/02/1985 |
| 4395112 | Latent electrostatic image developing device A latent electrostatic image developing device for developing a latent electrostatic image formed on an image-bearing member by applying a developer thereto. The developing device comprises a developer applicator means for holding the developer on its sur... | 07/26/1983 |
| 4373802 | Pre-operative time display system for copying machines A waiting time display system specifically for use in a copying machine includes a temperature sensor for monitoring the specific temperature of heat fixing rollers. Electronic processing is responsive to the varying signal outputs of the sensor and corre... | 02/15/1983 |
| 4360261 | Exposure apparatus for copying machines An exposure apparatus for copying machines comprises a light guiding unit having a variable aperture for guiding a light image through the aperture and onto a photoconductive drum. The light guiding unit comprises a thermally metamorphic member positioned... | 11/23/1982 |
| 4314755 | Bias voltage controlled developing system in an electrophotographic copying machine An electrophotographic copying machine is disclosed comprising an image formation section for forming an electrostatic latent image on a photosensitive drum, and a magnet brush developing unit for developing the electrostatic latent image through the use ... | 02/09/1982 |
| 4084538 | Ambient temperature compensating device for power source apparatus for developing electrodes A developing electrode device for a copying machine using a photosensitive material relying on temperature can set values despite variations in and deterioration of the initial characteristic of the photosensitive material to always produce stabilized cop... | 04/18/1978 |
| 4021112 | Photoreceptor dark current leakage detecting apparatus for xerographic machines A photoreceptor dark current leakage detecting device for use in determining the temperature induced current leakage of photoreceptors. The device as aforesaid comprises a miniature copy of, or segment from a photoreceptor class with electrical leads atta... | 05/03/1977 |
