The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 1997
Filed:
Mar. 17, 1995
Tatsuya Sugita, Hitachi, JP;
Akira Arimoto, Kodaira, JP;
Teruaki Mitsuya, Naka-machi, JP;
Nobuyoshi Hoshi, Hitachinaka, JP;
Mamoru Okano, Hitachi, JP;
Atsushi Onose, Hitachi, JP;
Yoshito Tsunoda, Tokyo, JP;
Shinya Kobayashi, Mito, JP;
Seiji Maruo, Hitachi, JP;
Yasuo Takuma, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A high-speed image forming method and apparatus is capable of directly controlling a toner by the force of an energy beam. Selected toner particles in a mass of toner adhering to the surface of a transparent drum are irradiated with a laser beam emitted by a laser disposed within the transparent drum and controlled for scanning according to image information. The laser beam separates the selected toner particles from the transparent drum by the force it produces on the particles, and then the separated toner particles are moved to a paper sheet by the force of an electric field produced by a developing electrode. Each toner particle need only be irradiated with the light for a comparatively short period of time, so that an image can be formed at high speed.