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:
Dec. 19, 1989
Filed:
Jun. 06, 1988
Toru Matsumoto, Tokyo, JP;
Toshiyuki Koshio, Tokyo, JP;
Yasuhide Goseki, Tokyo, JP;
Hisayuki Ushiyama, Hiratsuka, JP;
Masuo Yamazaki, Kawasaki, JP;
Ichiro Ohsaki, Kawasaki, JP;
Toshiaki Nakahara, Kawasaki, JP;
Junichi Kurimoto, Tokyo, JP;
Katsutoshi Wakamiya, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A mixture of a colorant, and a binder compound having an aliphatic hydrocarbon long chain and having a relatively low melt viscosity, is kneaded in a molten state in the presence of solid media such as balls or beads to form a uniform mixture in which the colorant particles or aggregates have been disintegrated to a size of 5 .mu. or below. Solid particles which may be used as a toner are formed from the uniform mixture and may be encapsulated, as desired, to provide a capsule toner.