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| Number | Title | Issue Date |
| 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 |
| 7356268 | Developing device A controller determines the degree of acuteness of the resonant oscillation of a piezoelectric oscillator, based on the developer's fluidity detection data detected by the piezoelectric oscillator. The toner density output data detected by a toner density sensor is ... | 04/08/2008 |
| 7329320 | Apparatus for electrifying particle apparatus for scattering particle Disclosed is an apparatus for electrifying spacers and an apparatus for scattering spacers using the same. For the purpose of maintaining a cell gap of a LCD, the spacer is electrified to have a first electrified voltage by a first electrifying pipe having a first c... | 02/12/2008 |
| 7271809 | Method for using viewing time to determine affective information in an imaging system A method for determining affective information for at least one image in an imaging system includes sequentially displaying a plurality of digital images for viewing by a user; monitoring the viewing time for each of the plurality of digital images; and using the vi... | 09/18/2007 |
| 7263315 | Developing apparatus having particular structural arrangement of developer carrying members Provided is a developing apparatus, including: a developer carrying member for carrying a developer containing toner and a carrier; a first chamber having an opening in which the developer carrying member is disposed; a carrying member for carrying the developer in ... | 08/28/2007 |
| 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 |
| 7099609 | Developing device A developing apparatus includes a developing container for containing a developer comprising toner and a carrier, said developing container is partitioned into a first chamber and a second chamber constituting a circulation path of the developer; a first developing ... | 08/29/2006 |
| 7058342 | Developing unit for image forming apparatus A developer for an image forming apparatus includes a developing casing having a plurality of toner chambers to contain toner, an agitator having a resilient wing and rotatably disposed in the toner chamber for agitating and transferring toner, a toner supplying rol... | 06/06/2006 |
| 7043190 | Image forming apparatus employing electro-photographic process and controlling method of the same In an image forming apparatus having a toner recycle mechanism employing a two-components developing system, rotational torque of a stirring screw disposed within a developing device and capacity of a recycle toner within the developing device are detected. Where th... | 05/09/2006 |
| 7013096 | Image forming apparatus with toner amount selection feature An image forming apparatus includes an image bearing member on which a latent image corresponding to image information is formed, a developing device for developing the latent image on said image bearing member with a developer including carrier and toner, a supplyi... | 03/14/2006 |
| 7004650 | Developing device using a developing liquid and image forming apparatus including the same A developing device for developing a latent image formed on an image carrier with a developing liquid includes a liquid storing section for storing the liquid including a developing substance and a carrier liquid. A developer carrier deposits the liquid fed from the... | 02/28/2006 |
| 7003235 | Developing device for suppressing variations in bulk density of developer, and an image forming apparatus including the developing device A developing device includes a developer including toner having a coloring agent dispersed in a binder resin, and carrier having a core material, and a coating layer covering the core material and containing a binder resin and a powder. A toner density detecting dev... | 02/21/2006 |
| 6978094 | Image forming apparatus with a toner density sensor This invention relates to an image forming apparatus including a developing unit which develops an electrostatic latent image formed on an image carrier by using a two-component developing agent containing polymerized toner. The developing unit includes a supply/con... | 12/20/2005 |
| 6973281 | Developing apparatus with two developing chamber-rotatable member pairs A developing apparatus includes a developing container for containing a developer comprising toner and a carrier, said developing container is partitioned into a first chamber and a second chamber constituting a circulation path of the developer; a first developing ... | 12/06/2005 |
| 6954285 | Developing method and developing apparatus featuring two latent image developing operations using two electrical fields The present invention provides a developing method for developing a latent image formed on an image bearing member with developer including toner and carrier contained in a developer containing portion, comprising the steps of developing a first latent image for con... | 10/11/2005 |
| 6947677 | Image forming apparatus with developing apparatus and method thereof The image forming apparatus has a developer container containing a developer therein, a developer toner density detecting portion for detecting the permeability of the developer in the developer container to thereby detect toner density, and an engine controller for... | 09/20/2005 |
| 6947681 | Image forming apparatus with two-speed developing operation and toner control feature An image forming apparatus in which the control of toner supply can be effected well irrespective of an image forming mode (image forming speed). The density of a toner in a developer contained in a developer containing portion is detected by a toner density sensor.... | 09/20/2005 |
| 6810217 | Process cartridge A process cartridge which is detachably mountable to a main body of an image-forming apparatus has a photosensitive member, a magnetic toner-holding section provided with a magnetic toner-carrying member which transports the toner to a developing zone, and a residua... | 10/26/2004 |
| 6768881 | Developing device and image forming apparatus using the same A developing device of the present invention includes a conveying member for conveying a developer that is a toner and carrier mixture. A sensor senses the toner content of the developer in terms of the permeability of the developer. A preventing member prevents the... | 07/27/2004 |
| 6665503 | Permeability detection apparatus, image forming apparatus or digital copier using the same, toner concentration detection apparatus, and electric conductivity detection apparatus A permeability detection apparatus configured to stably execute a permeability detection operation for toner concentration and characterized by improved sensitivity. The permeability detection apparatus includes: a detection circuit 22; an oscillation cir... | 12/16/2003 |
| 6636706 | Electrophotographic image forming apparatus In a detection unit, a measurement electrode member is arranged at a position where it contacts a developer, and has an input electrode for receiving a voltage from an apparatus main body and an output electrode for outputting an electrical signal in acco... | 10/21/2003 |
| 6600882 | Measuring toner level in a closed container Toner (5) is measured in a toner cartridge (1) by compressing the air in the upper part (7) of the toner hopper (3). The result of the compression is observed by a diaphragm (13) or, alternatively, by a pressure transducer (25). The volume of air is inver... | 07/29/2003 |
| 6505008 | Developer container, process cartridge, developing device, and image forming apparatus with toner sensor wiping member orientation A developer container for containing a developer includes a detecting member for detecting a developer amount having an electrode member having a pair of input-side and output-side electrodes formed in parallel and in one plane at a predetermined interval... | 01/07/2003 |
| 6449442 | Developing apparatus employing permeability sensor to detect polymer toner density A developing apparatus includes a developer container for containing a developer comprising magnetic carrier and non-magnetic toner produced through polymerization method; a developer carrying member, provided in an opening of the developer container, for... | 09/10/2002 |
| 6340528 | Crosslinkable polymer compositions for donor roll coatings A donor member, useful in ionographic or electrophotographic apparatuses and preferably useful in hybrid scavengeless development units, has a substrate and an oxidized transport coating thereover. The oxidized transport coating includes a polymer binder,... | 01/22/2002 |
| 6275665 | Developing device, process cartridge and electrophotographic image forming apparatus A developing device mounted on a main body of an electrophotographic image forming apparatus and adapted to develop an electrostatic latent image formed on an electrophotographic photosensitive member includes a developer container having a developing por... | 08/14/2001 |
| 6212341 | Apparatus for controlling the toner density in an electrophotographic machine An apparatus for controlling the density of a developer is described. The apparatus includes a developer container 51 in which a developer is enclosed; a detector 58 for magnetically detecting information about the density of the toner; toner supply for s... | 04/03/2001 |
| 6148156 | Developer detection apparatus and an image forming apparatus A developer detection apparatus includes a detection member for detecting the developer contained in the developer container detachably mountable on a main body of an image forming apparatus. A biasing member biases the detection member to the developer c... | 11/14/2000 |
| 6104892 | Developing device and image forming apparatus A developing device having a developer bearing member for carrying thereon a developer having toner and carrier and conveying the developer to a developing area, an agitating member for agitating the developer, a rotation radius R (m) of the agitating mem... | 08/15/2000 |
| 6052545 | Image forming apparatus An image forming apparatus includes an image bearing member and a charging unit having magnetic particles that are contactable with the image bearing member. An electrostatic image forming unit forms an electrostatic image on the charged image bearing mem... | 04/18/2000 |
| 5893010 | Toner density controlling method and apparatus A toner density controlling apparatus adapted to control toner density by sensing a T/D level in a developer vessel by using a toner sensor performs a toner density controlling operation on the basis of an output of the toner sensor while maintaining an i... | 04/06/1999 |
| 5794095 | Intelligent printing system A toner dispenser with on-board intelligence. The toner dispenser includes a reservoir of toner material and memory that stores the characteristics and amount of that toner material contained within. A coil resides inside the reservoir to allow the system... | 08/11/1998 |
| 5717973 | Image-forming machine with toner recycling and toner replenish control An image-forming machine has a developing device that includes a developing agent container for containing a developing agent with toner and carrier particles, and a developing agent application device for applying the developing agent onto an image carri... | 02/10/1998 |
| 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 |
| 5508793 | Developing device having toner recycling means and toner concentration controller A developing device has a developing unit to develop an electrostatic latent image formed on an image carrier surface with two-component developer composed of toner and carrier, a toner recycling device to feed toner removed from the image carrier surface... | 04/16/1996 |
| 5365319 | Image forming apparatus replenishing toner by detecting the ratio of toner and carrier and the density of the developer The present invention provides an image forming apparatus wherein first information corresponding to toner density of two-component developer including toner and carrier particles is detected by a first sensor, second information corresponding to density ... | 11/15/1994 |
| 5359396 | Toner density detection method for electrophotographic apparatus A toner density detection method for an electrophotographic apparatus in which driving of a rotary roll provided at an outlet of a special vessel is continued for a predetermined period of time (e.g., several seconds) after the operation of the electropho... | 10/25/1994 |
| 5353103 | Image recording apparatus with toner concentration detecting circuit A toner concentration detecting circuit detects a toner concentration of a two-component developer composed of toner and a carrier by detecting a change of magnetic permeability of the two-component developer. The detecting circuit is used in a developing... | 10/04/1994 |
| 5303011 | Image forming apparatus An image forming apparatus. In a copy control mode, a main motor, an eraser, a cleaning bias power source, a cleaning motor, a developing bias power source, a discharge lamp, and a pretransfer discharger are turned on. Then, a precleaning discharger and a... | 04/12/1994 |
| 5216470 | Method of determining the density of toner Disclosed is a method of determining the density of toner in the developer in an image forming apparatus by the use of a density sensor which is located beside a stirring member for stirring the developer. The density of toner is repeatedly measured at re... | 06/01/1993 |
