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:
Aug. 29, 1989
Filed:
Dec. 16, 1988
Takayoshi Aoki, Kanagawa, JP;
Masayuki Takeda, Kanagawa, JP;
Ikutaroh Nagatsuka, Kanagawa, JP;
Toshio Honjo, Chiba, JP;
Kazuhiro Itoh, Chiba, JP;
Kenji Uchida, Chiba, JP;
Fuji Xerox Co., Ltd., both of, JP;
Nippon Iron Powder Co., Ltd., both of, JP;
Abstract
A process for producing carriers for a developer is disclosed, which comprises mixing and heating a carrier material containing a binder resin and a magnetic powder, and essentially free of solvent, to obtain a molten dispersion of the magnetic powder in the binder resin; spraying the molten dispersion into liquid droplets; and cooling the droplets to solidify the droplets into carrier particles. The process eliminates the use of solvents and produces carrier particles of superior toughness, surface smoothness, and sphericality.