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Class 399/240 - Having applied bias


Subclass of Class 399 - Electrophotography
Definition: Subject matter wherein the application member is maintained
No. of patents: 90
Last issue date: 04/24/2012


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NumberTitleIssue Date
8165503Image forming apparatus and liquid developer holding member including a core member and a dielectric layer with concave portions provided on an outer circumerence of the core member
An image forming apparatus includes a liquid developer holding member and a bias voltage applying unit. The liquid developer holding member includes a conductive core member and a dielectric layer provided on an outer circumference of the core member, and the dielec...
04/24/2012
7664437Developing unit and density control method in electrophotography
This invention relates to a developing unit for maintaining constant density in an electrophotographic imaging process. The developing unit has a developer roll, wherein the developer roll provides a surface and a first voltage is applied to the developer roll; a sk...
02/16/2010
7536137Wet electrophotographic image forming apparatus and method for controlling the same
A wet electrophotographic image forming apparatus detects color per print page and executes printing by turning on only the development bias of a developing unit to be used for printing. The wet electrophotographic image forming apparatus has a color detecting unit ...
05/19/2009
7352376Apparatus and method for electrophoretic printing device
An electrode array with embedded thin-film transistors is fabricated with a self-aligned imprint lithography process. In an embodiment the electrode array is built over a flexible, conductive, substrate, in an alternative embodiment the electrode array is built on a...
04/01/2008
7292810Liquid electrophotographic imaging device and methods
An embodiment includes developing unit having a first developer roller and a second developer roller in contact with the first developer roller. The first developer roller is adapted to transfer developed liquid developer to the second developer roller, and the seco...
11/06/2007
7242892Wet type image forming apparatus
A wet type image forming apparatus forms an image in accordance with an electrophotographic imaging process using a developing solution containing a toner in a carrier solution. The image forming apparatus includes a developing roller that holds the developing solut...
07/10/2007
7174119Developing device featuring high viscosity developing agent and superimposed AC and DC bias voltage components
A developing device for developing an electrostatic image formed on an image carrier, includes a liquid developing agent, wherein toner particles are dispersed in a liquid solvent, and wherein a viscosity of the liquid developing agent is in a range 100 mPa·s to 10...
02/06/2007
7079792Developing unit using a developing liquid and image forming apparatus including the same
A developing unit includes a developing roller including a roller portion. The developing roller is rotatable while carrying a developing liquid on the roller portion. The developing unit also includes a voltage applying device that applies a voltage to the roller p...
07/18/2006
7055675Conveyor belt cleaning system
An assembly for cleaning a conveyor belt system is disclosed. The cleaning assembly is for a conveyor belt system with the type having first and second endless belts which each traverse a separate belt travel path and together define a generally upright article tran...
06/06/2006
7054585Belt device and unit device including belt device and image forming apparatus using the belt device and unit device
An image forming apparatus suppresses several kinds of inconveniences caused by unnecessary contact of a belt-formed member with opposing members and drives the belt-formed member accurately even when the belt-formed member separated from a part of a plurality of op...
05/30/2006
7024126Developing unit and density control method in electrophotography
A developing unit maintains constant density in an electrophotographic imaging process. The developing unit has: a) a developer with a developing surface and a first voltage is applied to the developer; b) a deposi...
04/04/2006
7020420Device and method for electrographically printing or copying using liquid inks
In a device and method for electrographic printing or copying, a latent image carrier is provided having a potential pattern corresponding to an image pattern. An applicator pattern is provided that carries a liquid layer of ink spaced from a surface of the latent i...
03/28/2006
7003248Liquid image formation apparatus and liquid developing device
An excess toner removal area is made broader over the whole area with respect to a developer applied area that is broader than an image effective area. Thereby a liquid developer, that tends to spread slightly broader than the applied area after being applied to a p...
02/21/2006
6999701Image forming apparatus with adjustable removal and developing nips
A removal nip having a predetermined width is formed by a sweep roller pressurizing mechanism, which adjusts the length of a tension spring by rotating an adjustment screw, and adjusting the size of an energizing force of a sweep roller with respect to a photosensit...
02/14/2006
6979523Toner material and method utilizing same
A toner particle adapted for use in electrostatic image formation, comprising a polymer and flakes of metal dispersed in the polymer. ...
12/27/2005
6951688Charging member, and image-forming apparatus and process cartridge which make use of the same
The present invention relates to a charging member for charging a surface of a member to be charged in an image forming apparatus, and one aspect of the present invention provides a charging member having an outermost surface layer containing a conductive elastic ma...
10/04/2005
6941102Belt device and unit device including belt device and image forming apparatus using the belt device and unit device
An image forming apparatus suppresses several kinds of inconveniences caused by unnecessary contact of a belt-formed member with opposing members and drives the belt-formed member accurately even when the belt-formed member separated from a part of a plurality of op...
09/06/2005
6904254Developing unit using a developing liquid and image forming apparatus including the same
A developing unit includes a developing roller including a roller portion. The developing roller is rotatable while carrying a developing liquid on the roller portion. The developing unit also includes a voltage applying device that applies a voltage to the roller p...
06/07/2005
6895200Liquid toner application system
A coating system comprising: a rotating roller; an electrode having a surface located adjacent the roller that defines a space between the surface of the roller and the electrode surface, which space has first and second apertures located at different angular positi...
05/17/2005
6865359Image forming apparatus using a developing liquid
An image forming apparatus using a highly viscous, dense developing liquid consisting of a carrier liquid and toner. A developing unit including a developer carrier and a coating member for coating the developing liquid on the developer carrier. The developer carrie...
03/08/2005
6862419Liquid image developing system having development roller partially soaked in developer
A liquid image developing system, including a cartridge in which a developer is stored; a supply line; a development container to which the developer is supplied from the cartridge through the supply line; a photosensitive body in the development container; a develo...
03/01/2005
6766130Liquid developer imaging system
A liquid developer imaging system and a method using the system for developing an image, including a cartridge for containing a developing solution; a developing container for receiving the developing solution supplied from the cartridge via a predetermined supply l...
07/20/2004
6738592Image forming apparatus using a developing liquid
An image forming apparatus configured to use a highly viscous, dense developing liquid consisting of a carrier liquid and toner. The apparatus includes a developing unit with a developer carrier and a coating member for coating the developing liquid on the developer...
05/18/2004
6735408Image forming apparatus with adjustable removal and developing nips
A removal nip having a predetermined width is formed by a sweep roller pressurizing mechanism, which adjusts the length of a tension spring by rotating an adjustment screw, and adjusting the size of an energizing force of a sweep roller with respect to a photosensit...
05/11/2004
6701111Liquid image developing system
A liquid image developing system including a development container in which a developer having a charge is stored, a photosensitive body, and a development roller which is partially soaked in the developer in the development container and to rotate and fo...
03/02/2004
6522852Image forming process using wet developing method
An image forming process wherein a latent image-bearing surface of a supporting member is contacted with a toner-containing liquid developer to develop the latent image with the liquid developer and to form a toner image covered with a layer of the liquid...
02/18/2003
6415124Wet-type developing unit capable of reducing pressing power given to squeeze roller and capable of controlling toner density of liquid developer adhered on development roller
In a wet-type developing unit (300), a plating roller (400) is disposed parallel to a development roller (110) at a predetermined distance. The plating roller (400) is connected to a variable power source (402) controlled by a voltage controller (404). Th...
07/02/2002
6337963Toner recovery system with electrical potential separation for a wet image-forming apparatus
A wet image-forming apparatus including a developing roller for developing latent images on a photoreceptor with a liquid developer, a developing blade for removing toner particles adhering to the surface of the developing roller, a brush roller for remov...
01/08/2002
6311035Reprographic system operable for direct transfer of a developed image from an imaging member to a copy substrate
An imaging system for effecting electrostatic printing of an image, wherein the imaging system includes at least one contact electrostatic printing engine operable in a novel fashion upon a copy substrate, wherein the contact electrostatic printing engine...
10/30/2001
6219501Method and apparatus for toner cake delivery
An imaging system for effecting electrostatic printing of an image, wherein the imaging system includes at least one contact electrostatic printing engine operable in a novel fashion upon a copy substrate, for imaging and development of a latent image rep...
04/17/2001
6166752Apparatus and method for forming image by causing ink to jump
An image forming apparatus includes a latent image carrying member that carries an electrostatic latent image on a surface thereof, and an ink holding member that is disposed in opposing relation to the latent image carrying member and holds a thin layer ...
12/26/2000
6163673Liquid developing apparatus having cleaning electrode for removing toner particulates
A liquid developing apparatus includes a developing roller for developing a latent image on a surface of a photoconductor belt by using a liquid developer. The developing roller is opposed to the surface of the photoconductor belt. A cleaning electrode is...
12/19/2000
6055387Device and method for electrophotographic image generation
An electrophotographic image generation device such as an electrophotographic printer comprises an image bearing belt, a development section, a toner image transfer section, a toner concentration sensor, and an electrical charge control section. A latent ...
04/25/2000
6038421Image forming apparatus using a liquid development system
An image forming apparatus of the type depositing a developing liquid on a developing sleeve in the form of a thin layer, developing a latent image formed on a photoconductive element with the liquid and transferring the resulting toner image to a recordi...
03/14/2000
5826148Liquid developer transporting device and liquid developing device
A liquid developer transfer device disposed between a reservoir accommodating a liquid developer having a fluid medium and electrically charged toner particles dispersed therein and an electrostatic latent image carrying member, which performs toner trans...
10/20/1998
5826149Developing device employing a liquid developer and picture forming device having such developing device
A developing device employing a liquid developer in which the development speed is increased and a developer squeezing operation may be eliminated while high-speed development and uniform development of the half-tone density may be realized simultaneously...
10/20/1998
5752143Liquid immersion development apparatus having efficient charge dissipating development electrode
In an electrostatographic liquid immersion development (LID) reproduction machine having an image bearing member having an image bearing surface, a development apparatus having a development electrode for forming a development nip with the image bearing s...
05/12/1998
5737672Self-cleaning liquid developing material applicator
An apparatus for developing an electrostatic latent image on an imaging member with a liquid developing material, including a liquid developing material applicator, the housing defining an aperture adapted for transporting liquid developing material into ...
04/07/1998
5737666Development control system
Toning apparatus for toning an electrostatic latent image, having image and background portions at different potentials on an imaging surface. The apparatus comprises an endless toning surface coated with a layer of concentrated toner and engaging the ima...
04/07/1998
5689779Liquid developer and developing method and developing apparatus using same
A liquid developer for developing an electrostatic latent image having a carrier fluid and electrically charged toner particles dispersed therein, wherein the liquid developer satisfies the following relationship: 25.0ࣙV0 /ƊV10 ࣙ1.5 ...
11/18/1997
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