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:
May. 30, 1989
Filed:
Mar. 02, 1987
Masumi Koishi, Sagamihara, JP;
Manabu Sawada, Kyobashi, JP;
Nobuyuki Igarashi, Kyobashi, JP;
Akira Arikawa, Kyobashi, JP;
Toyo Ink Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A toner for electrophotographs which is prepared by mixing thermoplastic resin core particles (A) having an average size of from 1 to 15 .mu.m with a colorant (B) and without or together with at least one of additives in a finely particulate form while applying mechanical strain force to the whole under such conditions that the average size of the resulting toner particles is in the range of 1-20 .mu.m whereby the colorant (B) and the other necessary fine particles are embedded substantially as primary particles in the resin core particles (A). A process for production of the toner is also disclosed.