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Class 430/35 - Specified electric field applied or electric charging step


Subclass of Class 430 - Radiation imagery chemistry: process, composition, or product thereof
Definition: Processes wherein the electrical potential difference is
No. of patents: 81
Last issue date: 04/08/2008


1      
NumberTitleIssue Date
7355783Printer wiper for printing on bichromal or multi-colored electronic paper
An electronic display includes an electronic display material having two opposing outer surfaces, wherein at least one of the outer surfaces is at least partially covered in a plurality of spaced-apart charge-retaining islands comprised of a conductive material with...
04/08/2008
7339715Processes for the production of electrophoretic displays
A coating of an encapsulated electrophoretic medium is formed on a substrate (106) by dispersing in a fluid (104) a plurality of electrophoretic capsules (102), contacting at least a portion of a substrate (106) with the fluid (104...
03/04/2008
7265894Bi-directional printer wiper for printing on bichromal or multi-colored electronic paper
An electric display system includes electric display material having two opposing outer surfaces, wherein at least one of the outer surfaces is at least partially covered in a plurality of spaced apart, charge-retaining islands comprised of a conductive material wit...
09/04/2007
7259744Dielectrophoretic displays
A dielectrophoretic display comprises a substrate having walls defining at least one cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface; a suspending fluid contained within the cavity; a plurality of at least one type of part...
08/21/2007
7236292Components and methods for use in electro-optic displays
A front plane laminate useful in the manufacture of electro-optic displays comprises, in order, a light-transmissive electrically-conductive layer, a layer of an electro-optic medium in electrical contact with the electrically-conductive layer, an adhesive layer and...
06/26/2007
7233429Electrophoretic display
This invention relates to an electrophoretic display comprising cells of well-defined shape, size and aspect ratio which cells are filled with charged pigment particles dispersed in a solvent, and novel processes for its manufacture. ...
06/19/2007
7223672Processes for forming backplanes for electro-optic displays
A non-linear element is formed on a flexible substrate by securing the substrate to a rigid carrier, forming the non-linear element, and then separating the flexible substrate from the carrier. The process allows flexible substrates to be processed in a conventional...
05/29/2007
7170670Electrophoretic medium and display with improved image stability
An electrophoretic medium comprises a plurality of particles suspended in a suspending fluid, the particles being capable of moving through the fluid upon application of an electric field to the medium, the fluid having dissolved or dispersed therein a polymer havin...
01/30/2007
7148128Electronically addressable microencapsulated ink and display thereof
We describe a system of electronically active inks which may include electronically addressable contrast media, conductors, insulators, resistors, semiconductive materials, magnetic materials, spin materials, piezoelectric materials, optoelectronic, thermoelectric o...
12/12/2006
7121647Method of applying an encapsulant material to an ink jet printhead
A stencil printed encapsulant material is provided for use in protecting electrical components in thermal ink jet printhead cartridges. A method of applying an encapsulant material to an ink jet print cartridge by stencil printing is also provided. The method includ...
10/17/2006
7118838Method, apparatus and media for displaying information
An apparatus for forming an image using an electrophoretic particle suspension containing media including: a transitioner for sufficiently lowering a viscosity of the suspension to facilitate mobility of at least some of the electrophoretic particles; and, imaging e...
10/10/2006
7030854Apparatus for displaying drawings
A first apparatus for displaying drawings comprises a housing having an aperture, a drawing sheet comprising electro-optic material movable through the aperture between closed and open positions, and a writing device for writing on the sheet as it moved between its ...
04/18/2006
7012600Methods for driving bistable electro-optic displays, and apparatus for use therein
A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an ini...
03/14/2006
7002728Electrophoretic particles, and processes for the production thereof
Copper chromite particles can advantageously be used as black particles in electrophoretic media and displays. Preferably, the copper chromite particles are coated with a silica coating and a polymer coating. ...
02/21/2006
6958848Capsules, materials for use therein and electrophoretic media and displays containing such capsules
An encapsulation material, intended for use in encapsulated electrophoretic displays, comprises the coacervation product of a polyanionic polymer having a vinyl main chain and a plurality of anionic groups bonded to the main chain, with a cationic or zwitterionic wa...
10/25/2005
6950220Electro-optic displays, and methods for driving same
The invention relates to electro-optic displays and methods for driving such displays. The invention provides (i) electrochromic displays with solid charge transport layers; (ii) apparatus and methods for improving the contrast and reducing the cost of electrochromi...
09/27/2005
6947202Electrophoretic display with sub relief structure for high contrast ratio and improved shear and/or compression resistance
This invention relates to an electrophoretic display comprising isolated cells of well-defined shape, size and aspect ratio which cells have internal sub relief structures and are filled with charged pigment particles dispersed in a dielectric solvent. The display s...
09/20/2005
6947203Electrophoretic dispersion, electrophoretic display device, method of manufacturing electrophoretic display device, and electronic system
To provide an electrophoretic dispersion capable of reducing or preventing the aggregation of electrophoretic particles, an electrophoretic display device using the electrophoretic dispersion, a method of manufacturing the electrophoretic display device, and an elec...
09/20/2005
6927893Electrophoretic device
In order to form an electrophoretic layer containing microcapsules at a desired region readily and accurately, a region having lyophobicity is formed on a member, and a microcapsule dispersion is then applied onto the member. ...
08/09/2005
6882463Particles for electrophoretic display and electrophoretic display apparatus using them
Electrophoretic displaying particles are provided. The particle is comprised of a resin and pigment granules enclosed therein. The pigment granules have an average particle size ranging from 0.1 μm to 20 μm, and the granule diameter distribution has two or more fr...
04/19/2005
6865012Electrophoretic display and novel process for its manufacture
This invention relates to an electrophoretic display comprising cells of well-defined shape, size and aspect ratio which cells are filled with charged pigment particles dispersed in a solvent, and novel processes for its manufacture. ...
03/08/2005
6853477Particles for electrophoresis, a production method thereof and a display using the particles
Electrophoretic particles for electrophoretic display having excellent dispersibility and dispersion stability with time for insulating media, and being protected against coagulation, settling and the like, a process for production of the electrophoretic particles h...
02/08/2005
6800410Image forming apparatus
An image forming apparatus has at least a photoconductor, a charger, and an irradiator for irradiating a light for optically writing in on the photoconductor to form a latent electrostatic image using a process for electrophotography in which a resolution of the opt...
10/05/2004
6795229Electrophoretic display with sub relief structure for high contrast ratio and improved shear and/or compression resistance
This invention relates to an electrophoretic display comprising isolated cells of well-defined shape, size and aspect ratio which cells have internal sub relief structures and are filled with charged pigment particles dispersed in a dielectric solvent. The display s...
09/21/2004
6781745Electrophoretic display with gating electrodes
An electrophoretic display comprising at least one in-plane gating electrode. The gating electrode(s) provide a gating effect, which raises the effective threshold voltage to prevent the undesired movement of the charged particles in the cells. The design of the inv...
08/24/2004
6753999Electrophoretic displays in portable devices and systems for addressing such displays
A card may include a photoconductive layer and an electrophoretic layer. The impedance of the photoconductive layer is lowered when struck by light from the light-emitting layer. Where the impedance of the photoconductive layer is lowered, the electrophoretic layer ...
06/22/2004
6729924Process for producing display device
An electrophoretic display device is provided with an improved display quality by distributing an electrophoretic liquid mixture containing electrophoretic particles to respective pixels in substantially equal amounts, thereby obviating a display density fluctuation...
05/04/2004
6727881Encapsulated electrophoretic displays and methods and materials for making the same
Disclosed herein are novel electrophoretic displays and materials useful in fabricating such displays. In particular, novel encapsulated displays are disclosed. Particles encapsulated therein are dispersed within a suspending, or electrophoretic, fluid. This fluid m...
04/27/2004
6704133Electro-optic display overlays and systems for addressing such displays
A display overlay includes a contrast media layer and a photoconductive layer disposed between two electrodes. Light from an emissive display strikes the photoconductive layer and lowers the impedance of the photoconductive layer at the point at which the...
03/09/2004
6671081Electrophoretic device, method for driving electrophoretic device, circuit for driving electrophoretic device, and electronic device
An electrophoretic display device 20A includes a first substrate 1 having a first electrode 3, a second substrate 2 having a transparent electrode 4, and a electrophoretic dispersion liquid 10 filled in the space between the electrodes 3 and 4, wherein at...
12/30/2003
6656662Method of forming a polymer molecule chain
This invention relates to a method of forming a polymer chain of a desired length in a thin film comprising a monomer having a multiple bond in a desired position. This invention is a method of polymerizing a monomer to form the polymer chain by applying ...
12/02/2003
6400492Electrophoretic display liquid, and electrophoretic display medium, method and device using the liquid
An electrophoretic display liquid including a dispersion medium, a first granular material having one or more hollows therein and a color and a second granular material having a color different from the color of the first granular material. When an imagew...
06/04/2002
6365307Apparatus and method for assessing a photoreceptor
An ionic medium, e.g., an ionic liquid, gel-like solid, etc., contacts a photoreceptor, e.g., as used in xerography etc., in order to charge and/or discharge the photoreceptor. A measuring device, e.g., an electrometer or current meter, measures at least ...
04/02/2002
6067185Process for creating an encapsulated electrophoretic display
Disclosed herein are novel electrophoretic displays and materials useful in fabricating such displays. In particular, novel encapsulated displays are disclosed. Particles encapsulated therein are dispersed within a suspending, or electrophoretic, fluid. T...
05/23/2000
5998008Developer carrying member, comprising a coat layer containing a conductive particle and a nitrogen-containing heterocyclic compound developing apparatus, developing method, image forming apparatus, and process cartridge
A developer carrying member is comprised of a substrate and a coat layer which covers the surface of the substrate. The coat layer contains at least a binder resin, conductive spherical particles having a number average particle diameter of from 0.3 μm t...
12/07/1999
5970287Charging device for charging charged body in non-contact state
A low-cost non-contact type charging device having excellent uniform charging performance and long stable charging characteristic includes an insulating support body having an insulating surface, first electrodes, to which a first voltage is applied, and ...
10/19/1999
5956550Method and device for preventing formation of background image in electrophotographic image forming apparatus
An electrophotographic image forming apparatus prevents the formation of a background image. The apparatus includes a photosensitive drum with a ground plate, and a power supply for applying a negative voltage to the ground plate in the case where the app...
09/21/1999
5665497Image recording method
Electric discharge between a photosensitive member and a charge retaining medium is ON/OFF controlled by changing the gas pressure between these two members, so that it is possible to effect image recording in a state where a DC voltage is applied. Accord...
09/09/1997
5580688Methods for enhanced-contrast printing with ferroelectric materials
Various processes for enhancing the contrast between image and non-image regions of a printed image are implemented by increasing the toner-accepting charge on the surface of a printing form having a ferroelectric layer and from which the image is printed...
12/03/1996
5450189Electrophotographic imaging with toners of opposite sign electrical charge
A system and method for electrophotographic printing an image with a plurality of toners, where the plurality of toners includes toners that are attracted to either a first charge potential or a second charge potential. The electrophotographic system incl...
09/12/1995
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