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:
Oct. 03, 1989
Filed:
Jun. 17, 1987
Takayoshi Aoki, Kanagawa, JP;
Ikutaroh Nagatsuka, Kanagawa, JP;
Masayuki Takeda, 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 carrier for developer is disclosed, which is produced by a process including the steps of 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 resin; spraying the molten dispersion into droplets; and cooling the droplets to solidify the droplets into carrier particles. The carrier has excellent sphericality, high surface smoothness, and long life when used as a component of a two-component type developer in electrophotography.