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| Number | Title | Issue Date |
| 8185025 | Device for developing an electrostatic latent image, and process cartridge and image forming apparatus including the same A developing device develops an electrostatic latent image formed on an image carrier with toner. The developing device includes a developer carrier, a developer supplying unit that supplies a developer on the developer carrier, a layer shaping member that shapes th... | 05/22/2012 |
| 8135317 | Development device and image forming apparatus having same A development device 4a is separated into a toner agitating portion 21 and a toner supply portion 22 by a boundary wall 23 in which a first opening 28 and a second opening 29 are formed. Inside the toner agitating por... | 03/13/2012 |
| 8041271 | Laser toner cartridge toner scatter prevention system and process Systems and methods for preventing and/or inhibiting toner scatter inside of laser printer toner cartridges including a shield that is adjacent to the toner regulating member, extends over and adjacent the developing roller, includes triboelectric material of a pola... | 10/18/2011 |
| 8032064 | Developer apparatus, image forming apparatus and developing method A developer apparatus, includes: a container which houses toner; a toner carrier roller that is provided, on a surface thereof, with a plurality of convex sections which are regularly arranged and a concave section which surrounds the convex sections, is shaped appr... | 10/04/2011 |
| 8027624 | Developer apparatus, an image forming apparatus and an image forming method A developer apparatus includes a toner carrier roller with plural rows of convex sections arranged in width and circumferential directions of the roller. Top surfaces of the convex sections coincide with a curved surface of a single cylinder shaped like the roller. ... | 09/27/2011 |
| 8014707 | Developing device and blade assembly A developing device includes: a developing roller, a casing which rotatably supports the developing roller; a thickness regulation blade; and first and second holding members which fix the thickness regulation blade on the casing. The first holding member includes: ... | 09/06/2011 |
| 8010024 | Developer apparatus with restriction member removing toner from convex sections of toner carrier roller A developer apparatus includes a toner carrier roller having convex and concave sections formed thereon. A restriction member including an elastic abutting member having an edge part that abuts the toner carrier roller removes toner from the convex sections such tha... | 08/30/2011 |
| 8005408 | Developing blade and its manufacturing method A developing blade (1) comprises a support member (2) having a coefficient of elasticity in the range of 0.5×104 to 4.0×104 kg/mm2 and a moment of inertia of area (Iz) in the range of 6.5E-04 to 1.2E-02, and a blade m... | 08/23/2011 |
| 8005407 | Developer apparatus with restriction member that restricts thickness of toner layer on toner carrier roller A developer apparatus, includes: a container which houses toner; a toner carrier roller that is provided, on a surface thereof, with a plurality of convex sections which are regularly arranged and a concave section which surrounds the convex sections, is shaped appr... | 08/23/2011 |
| 7970324 | Developing device, process cartridge, and image forming apparatus for preventing an abnormal image due to abnormal fluidity of a developer A developer carrier is provided in a rotatable manner. A layer-thickness control member makes a layer thickness of a developer carried on the developer carrier uniform. An accelerated agglomeration degree of the developer is equal to or less than 40%. The layer-thic... | 06/28/2011 |
| 7945195 | Developing device having developer regulating member, and image forming apparatus using developing device A developer regulating member capable of stably regulating the thickness of a developer even when used for a long time, while preventing the increase in the production cost, a developing device having the developer regulating member, an image forming apparatus havin... | 05/17/2011 |
| 7925194 | Developing unit and image forming apparatus using the same A developing unit to supply toner to a photosensitive medium of an image forming apparatus to form an image thereon, including a housing to hold a toner of a predetermined color, a developing roller which is coupled to the housing to be rotatable in a direction oppo... | 04/12/2011 |
| 7899376 | Developing device, image forming apparatus, and image forming system A developing device includes a rotatable toner bearing roller and a regulation blade. The toner bearing roller has regularly-arranged projecting sections and non-projecting sections, bears toner whose volume average particle diameter is smaller than a depth of the n... | 03/01/2011 |
| 7894755 | Developing unit with toner regulator and image forming apparatus using the same A developing unit mounted to a main frame of an image forming apparatus comprising a photosensitive medium where an electrostatic latent image is formed and provides a toner to the photosensitive medium to form an image, the developing unit including a developing fr... | 02/22/2011 |
| 7890033 | Developing device, process unit, and image forming apparatus which prevents ingrass of the developing agent in the vicinity of the developing member A developing device that prevents the formation of agglomerated masses of developing agent in the bottom of the developing agent housing chamber near the developing roller and the supply roller, and that maintains the fluidity of the developing agent in the bottom o... | 02/15/2011 |
| 7817946 | Developing device, image developing method, image forming apparatus, image forming method, and process cartridge The present invention provides a developing device that allows for maintaining the conveyance amount of a toner within a certain definite range. A developing device 12 of the present invention is provided with a toner conveying unit 13 configured to co... | 10/19/2010 |
| 7787808 | Developing device and image forming apparatus A developing device is provided having a simple configuration by which a desired amount of developer can be delivered to an image bearing member, and there is provided an image forming apparatus having the developing device. A developing device includes a developing... | 08/31/2010 |
| 7783237 | Developing blade The blade member of the invention is composed mainly of silicone rubber and contains as an additive component at least one selected from the group consisting of ultra-high molecular-weight-polyethylene, carbon nanotube, and fullerene. It is thus possible to decrease... | 08/24/2010 |
| 7764912 | Developer amount regulation blade structure A developer amount regulation blade structure that effectively reduces assembly cost and improves image quality configured to form a layer of a developer on a developer bearer includes a regulation blade configured to regulate a thickness of the developer on the dev... | 07/27/2010 |
| 7756452 | Developing device with structure configured to regulate distance between developing roller and regulating member for developer layer and image forming apparatus with the developing device A developing device supplies developer to an electrostatic latent image bearing body of an image forming apparatus. The developing device includes a container housing with an opening in a position opposite to the electrostatic latent image bearing body and stores de... | 07/13/2010 |
| 7727698 | Image forming method Disclosed is an image forming method comprising developing a latent electrostatic image formed on the surface of a latent electrostatic image bearing body by a developer borne and conveyed by a developer bearing body which is brought into contact with a developer la... | 06/01/2010 |
| 7657213 | Doctor blade with tangential working tip A doctor blade for a printer may include a cantilever spring. The free end of the cantilever spring includes a section with a first bend in one direction and a second bend in the opposite direction. Thus, a bump end may be formed which has a surface which is general... | 02/02/2010 |
| 7636538 | Layer-thickness restriction member, developing device, method for manufacturing restriction blade, and blade-forming mold A layer-thickness restriction member, including: an abutting surface that is for abutting against a developer-bearing body in order to restrict a layer thickness of developer borne by the developer-bearing body; and a flash that is located on a side close to a non-a... | 12/22/2009 |
| 7623815 | Developing device and image forming apparatus There is provided a developing device including: a casing; a developing roller held by the casing and carrying a developing agent; and a layer-thickness regulating blade for regulating a layer thickness of the developing agent carried on the developing roller, in wh... | 11/24/2009 |
| 7546071 | Developing device for prevention of coagulate toner adherence and image forming apparatus using the developing device A developing device includes a developer tank, a developing roller, a supply roller, a stirring member, and a doctor blade. The developing device is provided with: a cleaning member detachably provided on a contact portion of the doctor blade with the developing rol... | 06/09/2009 |
| 7546072 | Toner layer thickness regulation member and image forming apparatus having same There is provided according to the present invention a toner layer thickness regulation member capable of suppressing uneven density during forming an image. There is also provided an image forming apparatus capable of forming an excellent image stably by employing ... | 06/09/2009 |
| 7542705 | Electrophotographic image forming apparatus including a developing roller for a developing unit using non-magnetic mono-component toner, and developing method using the same An electrophotographic image forming apparatus is provided which includes an image receptor on which an electrostatic latent image is formed. A developing unit develops the electrostatic latent image by supplying non-magnetic mono-component toner to the electrostati... | 06/02/2009 |
| 7493071 | Process cartridge and image forming apparatus A cartridge includes a developing roller that contacts a photosensitive member along an axial direction thereof and carries and supplies a developing agent to the photosensitive member. A developing agent regulating device is provided in the cartridge to regulate an... | 02/17/2009 |
| 7471921 | Developing device and image forming apparatus A developing device including: a developer carrying member that is rotatably supported and carries a developer; and a layer thickness regulating member that extends in an axial direction of the developer carrying member and is provided with a pressing part that is i... | 12/30/2008 |
| 7463854 | Developing apparatus, processing cartridge, and image forming apparatus A sheet-shaped regulation member is supported by a supporting unit with an elastic force occurring by bending a sheet-shaped regulation member in the longitudinal direction thereof, and a force received as a result of being pressed by a developing roller. Thus, dire... | 12/09/2008 |
| 7457572 | Image forming method and process cartridge using specific toner regulating blade and toner An image forming method and related process cartridge, the method having the steps of controlling the layer thickness of a toner on a toner bearing member by means of a toner regulating blade, and developing with the toner an electrostatic latent image formed on an ... | 11/25/2008 |
| 7424253 | Toner metering device The present invention relates to an apparatus and method that is capable of adjusting the position of a developing agent metering device. Developing agent may therefore be metered in an image forming device. ... | 09/09/2008 |
| 7398040 | Developing apparatus, cartridge and image forming apparatus A developing apparatus includes a developer carrying member for carrying a developer thereon and developing an electrostatic image formed on an image bearing member with a developer, a developer layer thickness regulating member provided in contact with the develope... | 07/08/2008 |
| 7395017 | Image forming apparatus An image forming apparatus prints an image on paper. A developing roller supplies toner to an electrostatic latent image on a photoconductive drum to form a toner image. A developing blade forms a thin layer of toner on the developing roller. A transfer unit transfe... | 07/01/2008 |
| 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 |
| 7373099 | Image forming apparatus having a cleaning unit and a method thereof An image forming apparatus of a contact-type to develop an electrostatic latent image using a single-component nonmagnetic toner includes a photoconductive medium, a developing roller to move and attach toner to the photoconductive medium to develop the electrostati... | 05/13/2008 |
| 7369799 | Developing cartridge and image forming apparatus A layer thickness restricting blade may include an arm main body and a contact portion provided at a front end portion of the arm main body. The contact portion may be configured by inserting a rubber member made of polyurethane to a rubber member made of silicone. ... | 05/06/2008 |
| 7366434 | Periodic doctor element field reversal in an electrophotographic device A method and apparatus to clear the accumulation of toner particles from a doctor element by periodically reversing a bias field between a doctor element and a developer member. The developer member may be biased to a first electrical potential while the doctor elem... | 04/29/2008 |
| 7362991 | Image forming apparatus An image forming apparatus having a photosensitive drum bearing an electrostatic image, and a developing sleeve carrying a developer for developing the electrostatic image, the developing sleeve is in non-contact with the photosensitive drum, and is designed to be f... | 04/22/2008 |
| 7362992 | Developing unit and image forming apparatus A developing unit is provided, which includes a developer accommodating section to accommodate developer; a developing member to provide the developer accommodated in the developer accommodating section to an image carrying body by rotating; a developer layer formin... | 04/22/2008 |
