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| Number | Title | Issue Date |
| 7437101 | Toner container and toner filling method A toner container which is mountable and removable at a main body of an image forming apparatus, the toner container comprising: at least one toner filling port provided in a casing body of the toner container; and a sealing member which covers the toner filling por... | 10/14/2008 |
| 7263310 | Housing assembly of OPC unit A housing assembly of an OPC unit to protect an OPC drum in an image forming apparatus includes a main housing enclosing at least a half of a large-diameter OPC drum and provided with a main-opening selectively contacting a plurality of developing units and a plural... | 08/28/2007 |
| 7088945 | Toner supply unit and image forming apparatus A container including a container body configured to hold toner and a mouthpiece configured to deliver toner from the container body. The mouthpiece includes a circular outlet and engagement portions configured as openings located at positions opposed to each other ... | 08/08/2006 |
| 7088930 | Image forming apparatus and toner replenishing method A printer control CPU of the image forming apparatus controls the normal toner replenishing rotation after rotating a toner bottle in the normal rotating direction by about ¾ turn and then immediately in the direction reverse to the normal rotating direction by abo... | 08/08/2006 |
| 7062205 | Structure for locking a shutter member in a toner supplying container A toner supplying container has a container body having a toner discharge opening, a shutter member, a lever member, and a locking member. The lever member at its closing position causes the elastic portion of the locking member to be elastically deformed to urge th... | 06/13/2006 |
| 7031637 | Image forming apparatus having image forming units perpendicular to developer supply units The present invention relates to an image forming apparatus comprising a plurality of image forming units for forming images, the image forming units being detachably arranged in the image forming apparatus, and a plurality of developer supplying units arranged corr... | 04/18/2006 |
| 7027170 | Printing control system for separation printing This invention relates to a printing device control method capable of outputting data while inserting separation paper between OHP sheets when it is undesirable for OHP sheets or the like that output results overlap each other. When an output order flag representing... | 04/11/2006 |
| 6618564 | Electrophotographic development system with custom color printing An apparatus for developing a latent image recorded on an imaging surface with a custom color toner, including a developer housing for developing a portion of the latent image with the toner of custom color. The developer housing includes a donor member f... | 09/09/2003 |
| 6347199 | Toner supply method in picture image forming system and picture image forming system There is provided a toner supply method in a picture image forming system having a plurality of picture image forming parts, each of which is designed to supply a toner from a toner cartridge to a developing part, the toner supply method having the steps ... | 02/12/2002 |
| 6198890 | Electrophotographic color printing arrangement with inclined photoreceptor path An electrophotographic color printing arrangement includes a belt photoreceptor having a path of motion extending at an angle of about 35° to 60° with respect to the horizontal, a plurality of developing units disposed adjacent to the lower surface of t... | 03/06/2001 |
| 5852759 | Electrostatographic developing device with toner dosage reservoir An electrostatographic developing device (15) including a magnet roller (16), a chamber (41) for two-component developer, a holder (22) for toner and a toner dosage reservoir (45) with an opening closed by a magnetic plug (58) of developer, and a magnet (... | 12/22/1998 |
| 5809370 | Image forming apparatus capable of loading cartridge In a printer having a toner cartridge drum in which a toner cartridge of each of yellow, magenta, cyan, and black is detachably provided, when the toner cartridge is exchanged by opening a door of the printer and, further, opening a cartridge door, in cas... | 09/15/1998 |
| 5802435 | Toner hopper lockout mechanism A lockout mechanism for preventing an operator from filling a toner hopper in an electrographic printing device until the hopper is at least empty enough to accept the entire contents of a toner cartridge. An interlock mechanism takes advantage of the alr... | 09/01/1998 |
| 5797069 | Developing device for image forming apparatus A color printer including a photoconductive belt, a black developing unit which is located adjacent the photoconductive belt and a revolving type developing unit which is located adjacent the photoconductive belt and has a developing position on the photo... | 08/18/1998 |
| 5787328 | Rotary developing device for an image forming apparatus In an image forming apparatus, a rotary developing device has a developing unit in which a plurality of developing chambers are arranged around an axis of rotation. The developing unit is rotated about the axis to bring one of the chambers to a developing... | 07/28/1998 |
| 5765059 | Developing device for image forming apparatus and toner container therefor In an image forming apparatus, a developing device has a toner container having a toner outlet, and a receptacle having a mount portion for removably mounting the container. The insertion space of the mount portion and the toner outlet are each tapered su... | 06/09/1998 |
| 5722008 | Copy machine with physical mixing of distinct toner to form a custom colored toner A marking particle color blending device for use in an electrophotographic printing machine of the type having an electrostatic latent image recorded on a photoconductive member is provided. The device includes a first container for storing a first supply... | 02/24/1998 |
| 5708918 | Image formation apparatus that can maintain appropriately toner density in developing device An image formation apparatus for forming a full color image in the four colors of cyan, magenta, yellow and black has a optical ATDC sensor attached in a cyan developing device to control the toner density under optical ATDC. A black developing device has... | 01/13/1998 |
| 5640644 | Image forming apparatus having toner replenishment device An image forming apparatus includes a toner replenishment device which replenishes a specified monocolor toner to a developing unit arranged around a surface of an image carrier, and which is connected to the developing unit. The apparatus further include... | 06/17/1997 |
| 5315362 | Multicolor developing device including expansion/contraction means for permitting a developing mechanism to move relative to its associated toner container A movable frame member is so mounted on a stationary frame member as to be movable reciprocatingly. A plurality of developing mechanisms are provided on the movable frame member to perform developing in different colors. The same number of toner container... | 05/24/1994 |
| 5300991 | Image forming apparatus with toner replenisher An image forming machine having an image carrier on which an electrostatic latent image is formed, a developing device that develops the latent image and a toner replenisher that replenish toner to the developing device. The toner replenisher has a cover ... | 04/05/1994 |
| 5298951 | Image forming apparatus with toner monitoring system In an image forming apparatus, a toner container is provided for stocking a toner. In a body of the image forming apparatus, an opening is provided for supplying the toner to the toner container, and an opening cover for closing the opening when the toner... | 03/29/1994 |
| 5287161 | Color image forming apparatus with a multicolor detachable process unit A color image forming apparatus for forming a color image comprising; an image retainer for carrying the color image, a charger for charging a surface of the image retainer, a latent image former for forming a latent image on the charged surface of the im... | 02/15/1994 |
| 5194905 | Color printer apparatus for printing selected portions of latent images in various colors Color image creation wherein the color is user selectable selection of a desired color establishes the duty cycle of each of a plurality of developer structures which, in turn, determines how much, if any, of each color toner is deposited on a particular ... | 03/16/1993 |
| 5182608 | Method and apparatus for applying toner to an electrostatic image A series of electrostatic images carried by a drum or similar image member are toned with different colored toners by a movable developing device. The developing device moves a series of developing units to a position aligned with the drum. An applicator ... | 01/26/1993 |
| 5177543 | Detack enhancement for electrostatographic document copiers/printers An electrostatographic copier/printer has an image member with at least one portion which can selectively be imaged to receive an electrostatic image to be toned. A toning station is operable to bring the developer into contact with the image member porti... | 01/05/1993 |
| 5172168 | Electrophotographic system haivng a developing device with a plurality of toner feeders An electrophotographic system for use as a laser beam printer, a copying machine, or the like has an image carrier for receiving an electrostatic latent image, a developing device for developing the electrostatic latent image into a toner image with toner... | 12/15/1992 |
| 5162854 | Image forming apparatus having at least two toning stations An image-forming apparatus particularly usable in making multicolor toner images includes toning stations in pairs. First and second toning stations each have a toner applicator. A spacing roller or disk is mounted at each end of each applicator. Because ... | 11/10/1992 |
| 5150162 | Toner supply device for an image forming apparatus A toner supply device advantageously applicable to a full color copier has a plurality of supply units each being associated with respective one of developing units incorporated in the color copier. The supply units each is selectively engaged with or dis... | 09/22/1992 |
| 5089859 | Multicolor image forming apparatus which converts color data into erasing data A color image forming apparatus providing an image reader comprised of an array of image reading devices aligned in a main scan direction and an editing eraser comprised of an array of light emitting devices each of which has a size different from that of... | 02/18/1992 |
| 5077584 | Toner supply device for electrophotographic equipment A toner supply device incorporated in electrophotographic equipment which develops a latent image electrostatically formed on an image carrier by using toner. The device has a toner tank for supplying toner to a developing section which forms a part of th... | 12/31/1991 |
| 5049930 | System for preventing erroneous mounting of developer tanks accommodated in a developing device An electrophotographic apparatus is provided with a developing device accommodating a plurality of developer tanks and a system for preventing erroneous mounting of these developer tanks. The developer tanks contain respective developers different in colo... | 09/17/1991 |
| 5047804 | Image forming apparatus having a toner replenishment control system An image forming apparatus is provided with a plurality of developing units in which the toner replenishing device equipped with each developing unit is actuated for a predetermined period of time. When toner replenishment cannot be completed at the time ... | 09/10/1991 |
| 5045884 | Toner supply arrangement A toner supply arrangement for use in a developing apparatus which includes a plurality of toner accommodating containers provided in the developing apparatus, a toner transport device for transporting toner accommodated in each of the plurality of toner ... | 09/03/1991 |
| 4982242 | Color image forming apparatus A color image forming apparatus provided with a developing device for developing an electrostatic latent image formed on a latent image bearing member. The developing device comprises a plurality of developing units and supporting members for supporting t... | 01/01/1991 |
| 4954844 | Multicolor image developing device Disclosed is an apparatus for forming a color image on a photoreceptor, in which along the rotation direction of the photoreceptor there are provided an imagewise exposure process to form a latent image, a development process including a plurality of deve... | 09/04/1990 |
| 4937627 | Image forming apparatus having toner replenishing device interchangeable with a developing unit An image forming apparatus provided with a toner replenishing device attachable to a position of any one of a plurality of developing units. The toner replenishing device replenishes toner to another developing unit through the space of a developing unit ... | 06/26/1990 |
| 4927724 | Method and apparatus for color electrophotography A charging process, an exposure process, and a development process are performed to form a toner image on a photosensitive member for each of a plurality of different colors. The toner images for the respective colors form a composite color image. Second ... | 05/22/1990 |
| 4913348 | Method and apparatus for creating contrasting images at substantially full contrast voltage An electrostatic charge pattern is formed on a charge retentive surface. The charge pattern comprises charged image areas and discharged background areas. The fully charged image areas are at a voltage level of approximately -500 volts and the background ... | 04/03/1990 |
| 4912512 | Electrophotographic copier with a capability of automatically setting up optimum process conditions An electrophotographic copier selectively operable with various kinds of toner automatically sets up optimum copy process conditions for any particular characteristic of toner to be used when a toner cartridge is replaced. The copy process conditions are ... | 03/27/1990 |
