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| Number | Title | Issue Date |
| 8107862 | Image forming device having developer vibration element An image forming apparatus includes a developer containing casing, a developer transport body, transport electrodes, and a developer vibrating section. The developer containing casing is a box-like member in which a developer is contained. The developer transport bo... | 01/31/2012 |
| 8099030 | Apparatus and method for development of potential images, produced on an intermediate image carrier, for an electrographic printing or copying device In a system or method for development of potential images of images to be printed and generated on an intermediate image carrier using a developer fluid comprising charged toner particles and developer fluid in an electrographic printing or copying device, a feed de... | 01/17/2012 |
| 8050600 | Image formation device and developer supplying device There is provided an image formation device comprising an developer holding body having a holding surface parallel with a main scanning direction and holding thereon developer; an developer supplying unit to carry developer along a carrying path, wherein the develop... | 11/01/2011 |
| 8041267 | Developing device, process cartridge, and image forming apparatus A developing device includes a toner carrying member and an electric-field forming unit. The electric-field forming unit forms electric fields having different characteristics at a first area of the surface of the toner carrying member located within a developing ar... | 10/18/2011 |
| 8023865 | Developing apparatus and image forming apparatus A developing apparatus includes a developing roller, a first shaft, a second shaft, a belt, and a power supply. The developing roller is in contact with an image forming body. The first shaft is driven in rotation by an external drive source. The belt is entrained a... | 09/20/2011 |
| 7801470 | Developing device, process unit, and image forming apparatus A developing apparatus, comprises an endless belt shaped donor member; a developer supporting member to carry developer including toner and magnetic carrier and to form a toner layer on the donor member; a first supporting member arranged in the inside of the donor ... | 09/21/2010 |
| 7792471 | Developer electric field conveyer, developer feeder, and image forming apparatus A developing apparatus is accommodated within a laser printer. The developing apparatus includes a developing casing and a toner electric field transport body. The toner electric field transport body includes a transport wiring substrate and a transport-substrate su... | 09/07/2010 |
| 7747203 | Image forming apparatus with a developer feed device having a developer transport body for transporting developer Each transport electrode has its longitudinal direction intersecting with a sub-scanning direction. Transport electrodes 133a are disposed in parallel with each other and are arrayed along the sub-scanning direction. A transport-electrode electricity s... | 06/29/2010 |
| 7702264 | Image forming apparatus An image forming apparatus includes an image carrier that carries a latent image; a charging device that charges the image carrier with a charging voltage having an AC component; and a roller that carries a developer to be supplied to the image carrier in a developi... | 04/20/2010 |
| 7672625 | Developing device using electrostatic transport and hopping (ETH) A developing device, process cartridge, and image forming apparatus that use ETH development, and are capable of forming good multi-color images with a simple construction, and are capable of preventing the dispersal of powder. The developing device is for developin... | 03/02/2010 |
| 7647013 | Image forming apparatus including developer electric field transport apparatus A toner supply apparatus 6 is configured to be able to supply a charged toner T to a latent image forming surface LS of a photoconductor drum 3. The toner supply apparatus 6 houses a toner electric field transport body 62. The toner elect... | 01/12/2010 |
| 7415230 | Developing apparatus featuring an insulating or electrically floating jumping developer regulation member A developing apparatus includes a developer carrying member, disposed opposite to an image bearing member, for carrying developer which is caused to jump from the developer carrying member to the image bearing member to develop an electrostatic latent image formed o... | 08/19/2008 |
| 7373098 | Toner cartridge and electrophotographic printer employing the same A toner cartridge horizontally installed in an electrophotographic printer having a photoreceptor drum where an electrostatic latent image is formed by charging and exposure, and contributing to toner supply and development by being fixedly coupled to in the electro... | 05/13/2008 |
| 7366439 | Method of remanufacturing cartridge and remanufactured cartridge A method of remanufacturing a cartridge detachably mountable in an electrophotographic image-forming apparatus body and composed of styrene-based resin compositions at least in part, characterized by including the steps of: (1) dividing the cartridge into at least t... | 04/29/2008 |
| 7349646 | Toner cartridge used with an electrophotographic image forming apparatus A toner cartridge of an electrophotographic image forming apparatus. The toner cartridge of the electrophotographic image forming apparatus includes a developing roller that develops an electrostatic latent image formed on an outer circumferential surface of a photo... | 03/25/2008 |
| 7349657 | Developer feeding member, developing apparatus, process cartridge and developer feeding member mounting method A developer feeding member for use with an electrophotographic image forming apparatus to feed a developer accommodated in a developer accommodating portion, includes a shaft for receiving a driving force to rotate when the shaft is mounted in the developer accommod... | 03/25/2008 |
| 7340204 | Color image forming apparatus and process cartridge therefor A color image forming apparatus including a first-color developing unit configured to form a toner image on the photoconductive belt; and a second-color developing unit and successive developing units, at least the second-color and successive developing units each i... | 03/04/2008 |
| 7308222 | Toner supplying system for an image forming apparatus An image forming apparatus including an image carrier configured to have a latent image formed thereon, a developer carrier configured to supply toner, and a conveying member configured to receive toner from the developer carrier and to convey the toner to the image... | 12/11/2007 |
| 7286791 | Developing apparatus A developing device includes a developer carrying member for carrying a developer to develop an electrostatic image formed on an image bearing member with a developer, wherein an oscillating electric field is formed between the developer carrying member and the imag... | 10/23/2007 |
| 7274896 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus A process cartridge, and a main assembly of an image forming apparatus to which the cartridge is detachably mountable. The main assembly includes a motor, a driving rotatable member for receiving a driving force from the motor, and a twisted hole substantially coaxi... | 09/25/2007 |
| 7263318 | Image forming apparatus including an index feature for extending the life of a photosensitive member The image forming apparatus has an electrophotographic photosensitive member and a developing device for using a developer including toner and carrier, wherein the developing device develops an electrostatic image on a photosensitive member by putting the developer ... | 08/28/2007 |
| 7260348 | Image forming apparatus having a toner-supplying roller and a developing roller configured to meet a specific parameter An image-forming apparatus includes a toner-supplying roller and a developing roller that receives toner from the toner-supplying roller, the toner having either a glass transition point not higher than 67° C. or a softening point not higher than 120° C. The devel... | 08/21/2007 |
| 7254350 | Image forming apparatus featuring a variable oscillating electric field formed between a developer carrying member and an image bearing member during a developer operation in accordance with a peripheral speed of the image bearing member An image forming apparatus includes an image bearing member; a developer carrying member, disposed opposed to the image bearing member, for carrying a developer, wherein an electric field is formed between the developer carrying member and the image bearing member d... | 08/07/2007 |
| 7248814 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein the main assembly includes a motor, a main assembly side gear for receiving driving force from the motor, a hole defined by twisted surfaces, the h... | 07/24/2007 |
| 7231168 | Image forming apparatus An image forming apparatus which can stably form an image of high quality by the use of a first developer carrying member and a second developer carrying member. On the first developer carrying member, development is performed by a method whereby a magnetic carrier ... | 06/12/2007 |
| 7231161 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, wherein the main assembly includes a motor, a main assembly side gear for receiving driving force from the motor, a hole defined by twisted surfaces, the h... | 06/12/2007 |
| 7224925 | Developer feeding member, developing apparatus, process cartridge and developer feeding member mounting method A developer feeding member for use with an electrophotographic image forming apparatus to feed a developer accommodated in a developer accommodating portion, includes a shaft for receiving a driving force to rotate when the shaft is mounted in the developer accommod... | 05/29/2007 |
| 7224926 | Flight developer regulating member, developing apparatus and method of assembling developing apparatus A developing apparatus including a developer carrying member, a developer layer regulating member and a flight developer regulating member, wherein the developer carrying member is provided in opposed relationship with an image bearing member and carries a developer... | 05/29/2007 |
| 7218881 | Developing apparatus features first and second developing members and image forming apparatus having the same A developing apparatus provided with first and second members disposed on an upstream and downstream sides, respectively, and opposed to an image bearing member. When a closest distance between the first developing member and the image bearing member is defined as S... | 05/15/2007 |
| 7211361 | Image formation apparatus and image formation method An image formation apparatus includes a development unit using a developer support having a conductive surface layer, and a control unit for causing an idle operation of the developer support to be performed at a predetermined timing in a non-print state. ... | 05/01/2007 |
| 7200352 | Developing apparatus, developing method, image forming apparatus, image forming method and cartridge thereof A developing device including a latent image supporter. Powder is adhered on the latent image supporter to develop a latent image on the latent image supporter and a transporting member is arranged opposite to the latent image supporter. A plurality of electrodes ar... | 04/03/2007 |
| 7184682 | Process cartridge and electrophotographic image forming apparatus A process cartridge is detachably mountable to an electrophotographic image forming apparatus main assembly. The main assembly includes a main assembly electrical contact, first and second projections, main assembly positioning portions, and a force application memb... | 02/27/2007 |
| 7181155 | Developer supplying device, developing roller, developing device, image forming apparatus and process cartridge A developer supplying device including a developer holding unit configured to hold a developer, a developer transfer device configured to electrostatically transfer the developer from the developer holding unit, and a charging member having holes piercing therethrou... | 02/20/2007 |
| 7151238 | Thermal development apparatus and thermal development process A thermal development apparatus for thermally developing a thermal developable recording material in a thermal development section, the thermal developable recording material having a latent image formed in advance, wherein the the... | 12/19/2006 |
| 7136604 | Process cartridge having electrical contact connectable to electrical contact in electrophotographic image forming apparatus A unit is detachably mountable to a main assembly of an electrophotographic image forming apparatus including a main assembly electrical contact and a rotatable electrical contact supporting member. The unit includes a unit electrical contact for electrically connec... | 11/14/2006 |
| 7127200 | Developing roller, electrophotographic process cartridge, and electrophotographic image forming apparatus A developing roller is provided having an elastic layer and a surface layer superposed thereon. The surface layer is formed of a resin material containing nitrogen atoms, and contains at least two types of particles, organic-compound particles (M) and organic-compou... | 10/24/2006 |
| 7099607 | Cartridge, and toner container A first component part formed of a first styrene resin composition and a second component part formed of a second styrene resin composition are fastened by solvent welding by means of a terpene type solvent, to provide a cartridge which is almost free of deformation... | 08/29/2006 |
| 7099612 | Toner cartridge used with electrophotographic image forming apparatus A toner cartridge used with an electrophotographic image forming apparatus includes a developing roller that develops an electrostatic latent image formed on an outer circumferential surface of a photosensitive drum, a toner supplying roller that supplies toner onto... | 08/29/2006 |
| 7085516 | Process cartridge and electrophotographic image forming apparatus A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a first frame; a second frame coupled with the first frame for rotation about a shaft relative to each other; a first electrical contact, provided... | 08/01/2006 |
| 7076194 | Developing device and image forming apparatus A developing device includes an endless belt stretched around a plurality of support members, a portion of a peripheral surface of the endless belt contacting a portion of a surface of an image carrying member at a contact region, the endless belt being rotated by a... | 07/11/2006 |
