Patent application number | Description | Published |
20100075240 | ELECTROSTATIC-LATENT-IMAGE-DEVELOPING TONER, ELECTROSTATIC LATENT IMAGE DEVELOPER, PROCESS FOR PRODUCING ELECTROSTATIC-LATENT-IMAGE-DEVELOPING TONER, IMAGE-FORMING METHOD, AND IMAGE-FORMING APPARATUS - An electrostatic-image-developing toner includes toner particles containing a binder resin, a colorant, and a release agent, wherein the toner contains colorless binder resin particles and, of the colorless binder resin particles, particles having a volume-average particle size diameter 1.5 times as large as, or larger than that of, D50 of the toner particles are in a proportion of about 30 particles or less particles per 5,000 toner particles, with D50 being a volume-average particle size diameter of the toner particles. | 03-25-2010 |
20100261114 | MAGENTA ELECTROSTATIC DEVELOPING TONER, DEVELOPER FOR ELECTROSTATIC DEVELOPMENT, PRODUCTION METHOD OF ELECTROSTATIC DEVELOPING TONER, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - A magenta electrostatic developing toner includes binder resin particles that do not contain a coloring agent or a release agent and has a shape factor SF | 10-14-2010 |
20100261115 | YELLOW ELECTROSTATIC DEVELOPING TONER, DEVELOPER FOR ELECTROSTATIC DEVELOPMENT, PRODUCTION METHOD OF ELECTROSTATIC DEVELOPING TONER, IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS - A yellow toner includes binder resin particles that do not contain a coloring agent or a release agent and have a shape factor SF | 10-14-2010 |
20130331591 | METHOD OF PREPARING SILICA COMPOSITE PARTICLES - Provided is a method of preparing silica composite particles, including treating silica particles, wherein the treating is for treating the silica particles with a metal compound in which a metal atom binds to an organic group via an oxygen atom, in supercritical carbon dioxide, and the metal atom is selected from a group consisting of Ti, Al, Zr, V, and Mg. | 12-12-2013 |
20140057107 | SILICA PARTICLES AND METHOD OF PREPARING THE SAME - Provided are silica particles having two maximum values in number particle size distribution, wherein in the two maximum values, a particle size ratio (a maximum value of a small-size side/a maximum value of a large-size side) between a maximum value of a large-size side and a maximum value of a small-size side is from 0.02 to 0.3, and a number ratio (a number of silica particles having a maximum value of the small-size side/number of silica particles having a maximum value of the large-size side) is from 1 to 100, and particles within a range of 10% from the large-size side of the silica particles have an average circularity of from 0.65 to 0.90 and an average shrinkage ratio of from 10 to 50. | 02-27-2014 |
20140212667 | SILICA COMPOSITE PARTICLES AND METHOD OF PREPARING THE SAME - Silica composite particles in which a silica particle surface is sequentially surface-treated with a titanium compound in which an organic group is bonded to a titanium atom through an oxygen atom, and a hydrophobizing agent are provided, in which a titanium content in the silica composite particles measured using fluorescence X-ray is from 0.001% by weight to 10% by weight; a titanium content of a surface layer of the silica composite particles satisfies the following Formula (1); an average particle diameter of the silica composite particles is from 30 nm to 500 nm; and a particle size distribution index of the silica composite particles is from 1.1 to 1.5: | 07-31-2014 |
20140295340 | ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, ELECTROSTATIC CHARGE IMAGE DEVELOPER, TONER CARTRIDGE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD - An electrostatic charge image developing toner includes toner particles and silica particles that have a titanium content of from 0.001% by weight to 10% by weight in a surface layer, an average particle diameter of from 30 nm to 500 nm, and a particle size distribution index of from 1.1 to 1.5, and are surface-treated with a titanium compound in which an organic group is bonded to a titanium atom via an oxygen atom, and a hydrophobizing agent in sequence. | 10-02-2014 |
20160039682 | SILICA PARTICLES AND METHOD OF PREPARING THE SAME - Provided are methods of preparing silica particles having two maximum values in number particle size distribution, wherein in the two maximum values, a particle size ratio (a maximum value of a small-size side/a maximum value of a large-size side) between a maximum value of a large-size side and a maximum value of a small-size side is from 0.02 to 0.3, and a number ratio (a number of silica particles having a maximum value of the small-size side/number of silica particles having a maximum value of the large-size side) is from 1 to 100, and particles within a range of 10% from the large-size side of the silica particles have an average circularity of from 0.65 to 0.90 and an average shrinkage ratio of from 10 to 50. | 02-11-2016 |