Patent application number | Description | Published |
20080199798 | Electrostatic image developing toner, method for producing same, electrostatic image developer, image forming method and image forming apparatus - An electrostatic image developing toner includes a polyester resin, the electrostatic image developing toner having a sulfur element concentration S at % and a nitrogen element concentration N at % which satisfies 0.5≦N/S≦10, the nitrogen element concentration N being from 0.002 at % to 2.5 at %. | 08-21-2008 |
20080261132 | Resin for electrostatic-image-developing toner, electrostatic-image-developing toner, electrostatic image developer, method for forming image, and image-forming apparatus - A resin for an electrostatic-image-developing toner includes a polyester resin; a vinyl polymer resin obtained by polymerization of a radically polymerizable vinyl monomer; and at least one of a nitroxide compound and a reaction product of a nitroxide compound and an acid. | 10-23-2008 |
20090053631 | Image forming method and image forming apparatus - An image forming method includes forming an electrostatic latent image on a surface of a latent image carrier; developing the electrostatic latent image with a developing agent including a toner to form a toner image; transferring the toner image onto a surface of a target to obtain a transferred toner image; and fixing the transferred toner image; wherein the toner includes a resin particle having a core-shell structure, both of a resin constituting the core and a resin constituting the shell are a non-crystalline resin, glass transition temperatures of the resin constituting the core and the resin constituting the shell are different by about | 02-26-2009 |
20090162762 | ELECTROSTATIC IMAGE DEVELOPING TONER, PRODUCTION METHOD THEREOF, ELECTROSTATIC IMAGE DEVELOPER, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - An electrostatic image developing toner includes a binder resin that includes a polyester carbonate resin or a polyester amide resin, the polyester carbonate resin or the polyester amide resin containing a dodecenylsuccinic acid unit in an mount from about 0.5 mol % to about 30 mol % as a monomer unit; and a colorant. | 06-25-2009 |
20090297977 | Resin particle liquid dispersion for electrostatic image developing toner, electrostatic image developing toner, production method thereof, developer and image forming method - A resin particle liquid dispersion for an electrostatic image developing toner, comprising: an aqueous medium; and a resin particle dispersed in the aqueous medium to have a median diameter of 0.05 to 2.0 μm, the resin particle comprising a polycondensable polymer obtained by polycondensing polycondensable monomers, wherein a storage modulus GL( | 12-03-2009 |
20100047705 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE, DEVELOPER FOR DEVELOPING ELECTROSTATIC IMAGE, AND METHOD FOR FORMING IMAGE - A toner for developing an electrostatic image comprises: a binder resin; and a releasing agent, wherein the binder resin comprises a polycondensation resin obtained by polycondensing a polycondensation monomer in the presence of a polycondensation catalyst, the releasing agent comprises a condensation compound obtained by condensing a condensation monomer in the presence of a condensation catalyst, the toner contains a metallic element derived from the polycondensation catalyst and the condensation catalyst in an amount of from 0 to 10 ppm, and the toner contains a sulfur component in an amount of from 100 to 20,000 ppm. | 02-25-2010 |
20100047706 | ELECTROSTATIC-IMAGE-DEVELOPING TONER, PROCESS FOR PRODUCING ELECTROSTATIC-IMAGE-DEVELOPING TONER, ELECTROSTATIC IMAGE DEVELOPER, IMAGE-FORMING METHOD, AND IMAGE-FORMING APPARATUS - An electrostatic-image-developing toner is obtained by aggregating: resin particles, each of which has a core-shell structure, in which a difference in glass transition temperature between a resin constituting the core and a resin constituting the shell is about 20° C. or more; and releasing agent particles, each of which includes a polyester block copolymer having a weight-average molecular weight of about 3,000 or less and containing a non-crystalline polyester block containing a cyclic structure in the main chain and a crystalline polyester block containing no cyclic structure in the main chain. | 02-25-2010 |
20100233604 | ELECTROSTATIC IMAGE DEVELOPING TONER, METHOD FOR MANUFACTURING ELECTROSTATIC IMAGE DEVELOPING TONER, ELECTROSTATIC IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE-FORMING METHOD AND IMAGE-FORMING APPARATUS - An electrostatic image developing toner, includes: a block copolymer that contains: a block A that has a glass transition temperature of about 60° C. or more; and a crystalline block B that has a melting point of about 25° C. or more derived from an ethylenically unsaturated compound, wherein the block copolymer satisfies the following equations (1) to (3): | 09-16-2010 |
20110171572 | TONER FOR DEVELOPING ELECTROSTATIC IMAGE, DEVELOPER FOR ELECTROSTATIC IMAGE, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS - A toner for developing an electrostatic image contains at least one of an oxidation polymerizable monomer and a polymer having an ethylenically unsaturated group, and an oxidation polymerization catalyst in a form of a composite with inorganic particles, wherein a temperature T(10 Mpa) and a temperature T(1 Mpa) satisfies the following expression (1): | 07-14-2011 |
20110269066 | Bronsted acid compound, manufacturing method of condensation compound, dispersion liquid of condensation compound particles, manufacturing method of electrostatic image developing toner, manufacturing method of binder resin, binder resin, dispersion liquid of resin particles, electrostatic image developing toner, electrostatic image developer, and image-forming method - Methods and compositions including a compound represented by formula (I): | 11-03-2011 |