Samsung Electronics Co., Ltd.

Wakamoto Pharmaceutical Co., Ltd.

Masahide Yamada

Akinori Terada

Kenichi Miyamoto

Keiichi Ishikawa

Hiroko Endo

Fusaki Fujibayashi

Takuya Kitabatake

Takatoshi Seto

Rie Sakurai

Toshio Kuroda

Kenichi Edanami

Kensuke Kubo

A toner for developing an electrostatic charge image, the toner including: elemental iron, wherein a content of the elemental iron is in a range of 1.0&#xd7;10to 1.0&#xd7;10ppm, based on a total weight of the toner; elemental silicon, wherein a content of the elemental silicon is in a range of 1.0&#xd7;10to 5.0&#xd7;10ppm, based on a total weight of the toner; elemental sulfur, wherein a content of the elemental sulfur is in a range of 500 to 3,000 ppm, based on a total weight of the toner; optionally elemental fluorine, wherein a content of the elemental fluorine, if present, is in a range of 1.0&#xd7;10to 1.0&#xd7;10ppm; and a binder resin.

Toner for developing electrostatic charge image and method for preparing the same

A toner for developing an electrostatic charge image includes three or more elements selected from a group including an iron element, a silicon element, a sulfur element and a fluorine element and a binder resin including an amorphous polyester-based resin.

A toner for electrostatic use includes a binder resin including an amorphous polyester resin having a urethane bond and a crystalline polyester resin, a metal ion forming a chemical bond with the binder resin, at least one colorant forming a coordinate bond with the metal ion and being supported on the binder resin through the metal ion, and at least three elements selected from an iron element, a silicon element, a sulfur element, and a fluorine element while including at least one of an iron element, a silicon element, and a sulfur element, wherein an amount of the iron element is about 1000 ppm to about 10000 ppm as an element concentration, an amount of the silicon element is about 1000 ppm to about 5000 ppm as an element concentration, and an amount of the sulfur element is about 500 ppm to about 3000 ppm as an element concentration.

Toner for electrostatic use

A toner for developing electrostatic images includes a binder, a colorant, iron, silicon, and sulfur. The colorant includes a phosphor and a non-fluorescent colorant. The phosphor includes either one or both of a nitride and an oxynitride each including an alkaline-earth metal, silicon, and an activator element. A volume average particle diameter of the phosphor is greater than or equal to about 50 nm and less than or equal to about 400 nm. An internal quantum efficiency of the phosphor at an excitation wavelength of 450 nm is greater than or equal to about 60%.

Toners for developing electrostatic images and production method thereof

A phosphor includes a nitride including an alkaline-earth metal element, silicon, and an activator element, wherein the phosphor has a volume average particle diameter ranging from about 50 nm to about 400 nm, and an internal quantum efficiency of greater than or equal to about 60% at an excitation wavelength of 450 nm, the phosphor is represented by a formula MSiN, the M includes one or more alkaline-earth metal element selected from Ca, Sr, Ba, and Mg and including at least Sr, and one or more activator element selected from Eu and Ce and including at least Eu, an amount of the Sr included in the phosphor is about 15 mol % to about 99 mol % based on total moles of the M, and an amount of the activator element included in the phosphor is about 1 mol % to 20 mol % based on the total moles of the M.

Phosphor and method for manufacturing the same

Disclosed is a phosphor including at least one of a nitride and an oxynitride, wherein the nitride and the oxynitride contain an alkaline-earth metal element, silicon, and an activator element. wherein the phosphor has a volume average particle diameter of greater than or equal to about 50 nm and less than or equal to about 400 nm and an inner quantum efficiency of greater than or equal to about 60% at an excitation wavelength of about 450 nm. The method of preparing a phosphor includes a precursor preparation process of preparing a phosphor precursor particles including a silicon nitride particles, a compound containing an alkaline-earth metal element, and a compound containing an activator element, wherein the compound containing an alkaline-earth metal element and the compound containing an activator element are deposited on the surface of the silicon nitride particles; and a firing process of firing the phosphor precursor particles.

Semiconductor package with improved signal stability and method of manufacturing the same

3-[3-(2-Haloethyl)-3-nitrosoureido]-3-deoxy-D-alloses are new, antitumor compounds having a far lower myelotoxicity as compared with conventional antitumor agents. They are obtained by treating 3-[3-(2-haloethyl)ureido]-3-deoxy-1,2,5,6,-di-O-isopropylidene-.alpha.-D-a llofuranoses with a nitrosating agent and then hydrolyzing the protective group in the presence of an acid.

Growing community of inventors

Yokohama, Japan

Masahide Yamada