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| Number | Title | Issue Date |
| 8155555 | Developer delivering device and image forming apparatus A powder transporting device includes a transporting path that has first and second transporting path transporting paths, a connecting member that is disposed in a connecting portion of the first transporting path and the second transporting path, a sealing member t... | 04/10/2012 |
| 8139975 | Sealing member and process cartridge Provided is a sealing member for preventing leakage of a developer from a developer containing portion of a process cartridge detachable from a main body of an electrophotographic image forming apparatus to an outside of the developer containing portion. The sealing... | 03/20/2012 |
| 8027613 | Developing device, process cartridge, and image forming apparatus An arrangement of sealing members seals developer in a developer device. The sealing members minimize or eliminate developer from leaking around the sides of a developer carrier. ... | 09/27/2011 |
| 7983591 | Image forming apparatus method for removing toner from seal member by rotation of toner carrier roller An image forming apparatus, includes: an image carrier that carries an electrostatic latent image; a toner carrier roller that is provided, on a surface thereof, with a plurality of convex sections and a concave section which surrounds the convex sections, is shaped... | 07/19/2011 |
| 7983590 | Developer cartridge and developing unit having shutter for controlling supply of developer therebetween A developing unit includes a developer cartridge for accommodating developer and including a first opening for enabling communication between an inside of the developer cartridge and an outside of the developer cartridge, a housing including a cartridge housing part... | 07/19/2011 |
| 7983589 | Developing apparatus, process cartridge, and image forming apparatus A developing apparatus detachably mountable to an electrophotographic image forming apparatus having a latent image forming unit provided below a photosensitive drum in the gravitational direction. The apparatus includes a first member and a second member. The first... | 07/19/2011 |
| 7962060 | Cleaning and sealing apparatus of an image forming apparatus and developing unit thereof An image forming apparatus capable of cleaning contact members by using developer leakage preventing components includes a photosensitive member, a developer feeding member which feeds a developer to supply the developer to the photosensitive member, contact members... | 06/14/2011 |
| 7941071 | Lubricant application device, process cartridge, and image forming apparatus using the lubricant application device A lubricant application device includes a lubricant, a lubricant supplier, a lubricant smoother, and a sealing member. The lubricant is supplied to a surface of an image carrier for carrying a toner image. The lubricant supplier is provided downstream from a cleanin... | 05/10/2011 |
| 7711286 | Leakage prevention member and cleaning device A seal member 264 prevents leakage of developer to the side of a photosensitive drum 10 when cleaning the surface of the photosensitive drum 10 of a color printer 1, and has a contact portion 264a and a movement control port... | 05/04/2010 |
| 7711285 | Cleaning device for an image forming apparatus A cleaning device is provided with a cleaning unit (35) disposed downstream from a position at which a toner image is transferred to a paper. The cleaning unit (35) is provided with a cleaning blade (35c) for scraping off residual toner a... | 05/04/2010 |
| 7630665 | Developer container, process cartridge, image forming apparatus and manufacturing method for developer container A developer container for an image forming apparatus, said developer container including a rotatable member; a container body for containing a developer; a sealing member, provided in the container body, for preventing leakage of the developer out of the container b... | 12/08/2009 |
| 7623807 | Dynamic seal for component surfaces The present invention relates to seals which may be used in an image forming apparatus. The seals may prevent the leakage of image forming materials, e.g. as between a blade or a roll and an image forming apparatus housing. ... | 11/24/2009 |
| 7599644 | Process cartridge and image forming apparatus that eliminates charge from the surface of a photosensitive member upstream of a sealing member contact portion An image forming apparatus suppresses the deposition of transfer-residual toner on a sealing sheet and also suppresses the dropping of deposited toner therefrom, at a high temperature and in a high humidity environment. The apparatus includes a photosensitive drum, ... | 10/06/2009 |
| 7539438 | Cleaning blade seal An apparatus for a printing device includes a roller, a sealing member defining a generally C-shaped indentation, and a cleaning blade positioned against the roller. The cleaning blade includes an end portion positioned in the generally C-shaped indentation. ... | 05/26/2009 |
| 7502574 | Image forming apparatus including a seal member in contact with an image bearing member and a flange provided at an end of the image bearing member Toner remaining on a photosensitive drum may be prevented from being given out after a toner image is transferred, by causing a seal member to abut on both a photosensitive portion of the photosensitive drum and a flange disposed on each of ends of the photosensitiv... | 03/10/2009 |
| 7483647 | Cartridge having a molded resin complex A cartridge mounted on an electrophotographic image forming apparatus includes a molded resin complex in which a first resin molded product and a second resin molded product are engaged with each other so as to be separable. The first resin molded product is obtaine... | 01/27/2009 |
| 7483646 | Developer container, process cartridge, image forming apparatus and manufacturing method for developer container A developer container for an image forming apparatus, said developer container including a rotatable member; a container body for containing a developer; a sealing member, provided in the container body, for preventing leakage of the developer out of the container b... | 01/27/2009 |
| 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 |
| 7433627 | Addressable irradiation of images A marking system includes at least one image applying component for applying a marking material to a substrate in forming an image on the substrate. The marking material includes a radiation sensitive material. An addressable irradiation device receives the marked s... | 10/07/2008 |
| 7400843 | Color image forming apparatus A color image forming apparatus may include photoconductors, developing rollers, and cases, each configured to hold developer to be supplied to a corresponding photoconductor from a corresponding developing roller, and each having an elongated opening in which the d... | 07/15/2008 |
| 7387861 | Additive for photoconductor end seal wear mitigation This invention provides an organic photoconductor which does not experience end-seal wear in normal use. This invention provides charge transport formulation that is easily prepared and coated by standard, dip-coating methods. This is realized by addition of a small... | 06/17/2008 |
| 7352989 | Reinforced cleaning member, and process cartridge and image forming apparatus using same A cleaning member for cleaning an image carrier. The cleaning member includes a support plate having a planar face portion configured to be fixed to an object in a position adjacent to the image carrier, a plurality of reinforcement features configured to reinforce ... | 04/01/2008 |
| 7352981 | Developing apparatus, process cartridge and image forming apparatus having toner leakage prevention member The sponge sealing member of the side seal is arranged on the roller opposed face of the seal arrangement portion so that the lower end face at the upstream side in the rotating direction of the developing roller is positioned to have the same face as the back end f... | 04/01/2008 |
| 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 |
| 7336914 | Sealing member for sealing magnetic particles and developing apparatus using the sealing member A developing apparatus includes a developing container for containing a developer; a developer carrying member to be rotated while carrying the developer thereon, the developer carrying member being provided in an opening portion of the developer container; and a se... | 02/26/2008 |
| 7330678 | Waste developer collecting container for image forming apparatus A waste toner collecting container which is used in a color image forming apparatus and can be removed from the machine and stores waste toner particles which have not been transferred to recording paper and have been collected, is constructed such that an air seali... | 02/12/2008 |
| 7310488 | Belt device and image forming apparatus A belt device includes an endless belt, a plurality of rollers around which the endless belt is wound, and a foreign material entry preventing member disposed on at least one side of the endless belt in the width direction. The foreign material entry preventing memb... | 12/18/2007 |
| 7283766 | Process cartridge and image forming apparatus A process cartridge detachably mountable to an electrophotographic image forming apparatus main assembly forms an image on recording material. The cartridge is transportable with the apparatus while being set therein. The cartridge includes a frame, an electrophotog... | 10/16/2007 |
| 7277658 | Sealing member for image forming device A sealing member for an image forming device as well as an apparatus and method of locating components within a printing device. The image forming device may include laser printers, ink-jet printers, copiers, faxes, all-in-one devices or multifunctional devices.... | 10/02/2007 |
| 7260343 | Gear assembly used with an image forming apparatus, an optical photoconductive (OPC) unit having the same, and a method of driving the gear assembly An organic photoconductive (OPC) unit of an image forming apparatus and a gear assembly arranged in the OPC unit. The gear assembly includes a drum gear formed on a flange of an OPC drum, a cleaning gear driven by a receiving power from the drum gear, and at least o... | 08/21/2007 |
| 7254357 | Method and apparatus for image forming capable of effectively regulating a toner layer, developing mechanism for the apparatus, and a process cartridge provided in the apparatus An image forming apparatus including a developer regulating member and sealing members. The developer regulating member regulates an amount of the developer carried by a developer carrying member, and has a center region having a first outer diameter of a first long... | 08/07/2007 |
| 7251435 | Developing device and printing device A developing device is provided, in which respective lateral ends (the portions overlapped with the side seals 27) of the front seal board 23 are adhered/fixed to the side seals 27. More specifically, the gap between the both sides A1 and... | 07/31/2007 |
| 7245313 | Image forming device An image forming device includes a main frame of the image forming device having a body, a drum shaft which is positioned and supported by the body of the main frame of the image forming device, a photoconductive drum which is provided removably in the main frame of... | 07/17/2007 |
| 7239831 | Image forming apparatus when a maximum developing bias voltage |V| max and surface potential Vd of a charged image bearing member satisfy: |V| max≦|Vd| An image forming apparatus includes an image bearing member; a charging device for electrically charging the image bearing member; a rotatable developer carrying member for carrying a developer to develop an electrostatic image formed on the image bearing member wit... | 07/03/2007 |
| 7233753 | Toner cartridge and method of attached guide member therein A toner cartridge including a guide member that guides supplying operation of toner. The toner cartridge includes a housing, in which a toner of a predetermined color is filled, a first coupling portion and a second coupling portion within the housing that are forme... | 06/19/2007 |
| 7231164 | Developing unit, developing cartridge, and image forming apparatus A developing unit detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a developing member for developing an electrostatic latent image formed on an electrophotographic photosensitive member, a developer accommodating p... | 06/12/2007 |
| 7228086 | Electrophotographic image forming apparatus having process cartridge with electrical contacts A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus includes an electrophotographic photosensitive drum, a process device actable on the drum, and a movable operation member. After the cartridge is mounted to... | 06/05/2007 |
| 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 |
| 7218882 | Developing device, process cartridge, developer layer regulating member, and developer layer regulating member attaching method A developing device for developing a latent image formed on an image bearing member by using developer, the developing device including: a developing frame; a developing roller for supplying developer to the latent image to develop the latent image; a developer laye... | 05/15/2007 |
| 7218888 | Image formation apparatus An image formation apparatus includes a cleaning device capable of coming into and out of contact with the front surface of a toner image carrier which rotates with toner images adhering on its front surface, and for removing toners adherent on the front surface of ... | 05/15/2007 |
