Seiko Epson Corporation

Seiko Epson Kabushiki Kaisha

Masanobu Motoki

Yoshitaka Itoh

Sadao Kanbe

Haruo Osafune

Nobutaka Matsuo

Hiroshi Ito

Yoshinori Miyazawa

Masanao Kunugi

Tahei Ishiwatari

Hidetsugu Shimura

Tsuneo Handa

Teruyuki Mizumoto

Koichi Higashimura

Atsushi Uchino

A combination toner for xerographic image formation having conductive portions and insulating portions is provided. The conductive portions function to accumulate a charge in the toner particles and the insulating portions function to lengthen the period of discharge of the accumulated charge. The toner can be either magnetic or non-magnetic and improves image formation and transfer.

Combination toner and printer utilizing same

A sol-gel method of preparing doped glass articles is provided. The glass is formed by preparing a sol solution containing hydrolyzed silicon alkoxide and ultrafine particle silica. The sol solution can also include a dopant. The sol solution is gelled in a container, dried and sintered to yield the doped silica glass articles.

Method of preparing doped silica glass

A method of preparing preforms for optical fibers is provided. The method includes preparation of a first sol solution of a silicon alkoxide hydrolyzed with an acid and ultrafine particle silica, placement of the first sol solution into a container, and gelation of the first sol solution while the container is being rotated to yield a wet gel having a center hole. A second sol solution having a different composition than the first sol solution is prepared and used to fill the center hole in the wet gel. The second sol solution is then gelled to a wet gel composite and the composite is dried and sintered to yield the preform.

Method of preparing preforms for optical fibers

A method for preparing high quality silica glass articles is provided. The glass is prepared by hydrolyzing silicon alkoxide with a basic reagent to yield a first solution, hydrolyzing a silicon alkoxide with an acid reagent to yield a second solution, mixing the first solution with the second solution at a predetermined mixing rate to yield a sol solution, pouring the sol solution into a container, gelling the sol solution to a wet gel, drying the wet gel to a dry gel, and sintering the dry gel to yield a silica glass.

Method of preparing silica glass

Growing community of inventors

Nagano, Japan

Masanobu Motoki