Class / Patent application number | Description | Number of patent applications / Date published |
430032000 | Electrophoretic imaging, process, composition, or product | 14 |
20080292978 | METHOD FOR FORMING AN ELECTRONIC PAPER DISPLAY - Methods form a multi-color electrophoretic display. The methods include providing microcapsules, wherein the microcapsules have an electrostatic charge, and wherein the microcapsules comprise, a shell that is transparent and a display medium within the shell, wherein the display medium is comprised of either (a) at least two sets of differently colored particles in a substantially clear fluid, or (b) at least one set of colored particles in a differently colored fluid. The methods include transferring the microcapsules to a substrate, wherein the electrostatic charge of the microcapsules attracts the microcapsules to the substrate, wherein a display layer of microcapsules is formed on the substrate. The methods include positioning a conductive substrate adjacent to the substrate, wherein the substrate is located between the display layer and the conductive substrate. In use, the conductive substrate applies an electric field to the display layer, and wherein the sets of particles within each microcapsule in the display layer are moveable within the microcapsule by the electric field. | 11-27-2008 |
20090104551 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, IMAGE FORMING METHOD AND IMAGE FORMING - Disclosed is an electrophotographic photoreceptor comprising on an electrically conductive support, a charge generation layer and a charge transport layer, wherein the charge transport layer comprises a charge transport material represented by formula (1) and exhibits a transmittance at 370 nm of not more than 10% and a transmittance at 405 nm of not less than 70%, and the charge transport layer further comprising a compound represented by formula (2), (3) or (4). | 04-23-2009 |
20110091798 | Liquid Toner, Electrophoretic Ink, and Methods of Making and Use - LEP ink includes a carrier and particles dispersed in the carrier. Particles contain polymeric resin and dendritic macromolecule having functional groups. Some dendritic macromolecule functional groups are coupled to some resin functional groups. Other dendritic macromolecule functional groups are not coupled to any component of the resin. Other resin functional groups are not coupled to any component of the dendritic macromolecule. Liquid toner producing methods include forming a paste containing a carrier liquid and a thermoplastic resin having a polymeric backbone and functional groups. The paste is combined with a colorant and an adhesion promoting dendritic macromolecule having functional groups. After combining the paste and dendritic macromolecule, the method includes coupling the dendritic macromolecule functional groups with resin functional groups, encapsulating the colorant in the resin/dendritic macromolecule, and dispersing the encapsulated colorant in the carrier liquid. The dendritic macromolecule increases durability in printed images using the ink or toner. | 04-21-2011 |
20110207036 | Electrophoretic Particle Salt For Electrophoretic Display And Method Of Making - An electrophoretic particle salt that includes a cationic electrophoretic particle and an anionic group ionically associated with the cationic electrophoretic particle is employed in an electrophoretic display. A spacer group chemically bonds a cationic moiety to a surface of the electrophoretic particle. A method of making the electrophoretic particle salt includes particle surface modification, nucleophilic substitution to create an interim salt and anion exchange. The electrophoretic particle salt has an ionization constant that favors dissociation into a positively charged electrophoretic particle and the anionic group in a nonpolar medium. The electrophoretic display includes a pair of electrodes and a dispersion of the electrophoretic particle salt in a nonpolar medium in a gap between the pair of electrodes. | 08-25-2011 |
20110217639 | ELECTROPHORETIC DISPLAY FLUID - The present invention is directed to an electrophoretic fluid which comprises a non-mobile or semi-mobile phase and charged pigment particles. The fluid has many advantages, such as increased contrast without affecting the switching speed. | 09-08-2011 |
20130078559 | WHITE REFLECTIVE POLYMER PARTICLES - This invention relates to white reflective polymer particles prepared by a reverse emulsion solvent removal process, electrophoretic fluids comprising such particles, and electrophoretic display devices comprising such fluids. | 03-28-2013 |
20130244148 | ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An electrophotographic photoreceptor includes a conductive substrate, a photosensitive layer, and a surface layer that is provided on the photosensitive layer. The surface layer includes a cross-linked component which is a reaction product of compound A and compound B. The compound A is at least one compound selected from guanamine compounds and melamine compounds, and the compound B is a charge-transporting material. A structure derived from at least one compound selected from the guanamine compounds and the melamine compounds included in the surface layer amounts for 0.1% by weight to 5% by weight, and a structure derived from the charge-transporting material included in the surface layer amounts for 85% by weight or greater. Surface roughness Rz of the surface layer is from 0.1 μm to 0.3 μm, and the surface has at least one compound selected from fatty acid metal salt and fluorine resin particles. | 09-19-2013 |
20140087295 | TECHNIQUES FOR COATING PRINT MEDIA - Techniques for coating print media are described herein. In an example, a photo imaging assembly is to receive a liquid electrophoretic coating composition assembly on a chargeable surface so as to form a coating layer thereon using electrostatic forces. The coating layer is to be transferred to a print medium. | 03-27-2014 |
20140087296 | NOVEL SYSTEMS, METHODS, AND COMPOSITIONS RELATING TO DISPLAY ELEMENTS - A display element is described. The display element includes: a network; a continuous phase; and a discontinuous mobile phase, which is capable of responding to an externally applied electric field such that under influence of the externally applied electric field, without effecting bulk movement of the continuous phase, the mobile phase displaces from one location to another location through or within the network. A process of manufacturing a display cell is also described. The process includes: obtaining a pair of electrodes; placing a network between the electrodes; assembling the electrodes and the network to form a sub-assembly; and injecting into the subassembly a discontinuous phase. | 03-27-2014 |
20140147777 | FINE ELECTRET PARTICLES AND PROCESS FOR PRODUCING SAME - The present invention provides uniformly electrified electret fine particles having excellent electrophoretic properties. Specifically, the present invention provides a core-shell electret fine particle comprising a core part and a shell part, the core part containing a material that has an ability to disperse a pigment therein, the shell part containing an electret resin, and the electret resin being a fluorine-containing resin and being electretized by electron ray irradiation, radial ray irradiation, or corona discharge treatment. | 05-29-2014 |
20160131925 | METHOD OF MANUFACTURING ELECTROPHORETIC PARTICLE, ELECTROPHORETIC PARTICLE, ELECTROPHORETIC DISPERSION, ELECTROPHORETIC SHEET, ELECTROPHORETIC DEVICE, AND ELECTRONIC APPARATUS - There is provided a method of manufacturing an electrophoretic particle, in which the electrophoretic particle includes a mother particle and a block copolymer, including: a step of polymerizing a monomer M having a site contributing to dispersibility into a dispersion medium, a monomer M including a second functional group having reactivity with the first functional group, a charged monomer M by living polymerization without random copolymerizing the monomer M | 05-12-2016 |
430033000 | Post treatment process to fix or transfer image, or collect or remove electric radiation sensitive pigment | 1 |
20090035672 | ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, PRODUCTION METHOD THEREOF, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS USING PHOTOCONDUCTOR, AND PROCESS CARTRIDGE - To provide an electrophotographic photoconductor that comprises a support and a cross-linked layer formed over the support, wherein the cross-linked layer comprises at least light curable of radically polymerizable compound, the difference of maximum value of the post-exposure electrical potential and minimum value of the post-exposure electrical potential when writing is conducted under the condition that image static power is 0.53 mW, exposure energy is 4.0 erg/cm | 02-05-2009 |
430037000 | Electric radiation sensitive pigment | 2 |
20100040966 | ELECTROPHORETIC DISPERSIONS - This invention relates to improved electrophoretic dispersions and a method for improving the performance of an electrophoretic display. The invention also relates to a method of inducing or enhancing the threshold voltage of an electrophoretic dispersion. | 02-18-2010 |
20130244149 | CHARGED PIGMENT PARTICLES FOR ELECTROPHORETIC DISPLAY - The present invention is directed to a charged pigment particles useful for the electrophoretic fluid. The present invention describes how the charge property of the charged pigment particle may be controlled. By adjusting the charge property of the charged pigment particles to a suitable level for an electrophoretic display system, a faster switching speed, a higher contrast ratio and better image bistability may be achieved. | 09-19-2013 |