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:
Jun. 06, 1995
Takashi Imai, Minami Ashigara, JP;
Satoshi Inoue, Minami Ashigara, JP;
Masanori Ichimura, Minami Ashigara, JP;
Yutaka Sugizaki, Minami Ashigara, JP;
Susumu Saito, Minami Ashigara, JP;
Masaru Miura, Minami Ashigara, JP;
Michio Take, Minami Ashigara, JP;
Yasuo Yamamoto, Minami Ashigara, JP;
Koji Fukushima, Minami Ashigara, JP;
Manabu Serizawa, Minami Ashigara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A surface-treated inorganic fine particle includes an inorganic fine particle, a hydrophobizing agent deposited on the surface of the inorganic fine particle and an amino group-containing coupling agent deposited on the surface of the inorganic fine particle, wherein the hydrophobizing agent and the amino group-containing coupling agent in a ratio of 1/(0.01 to 0.1) by weight are deposited on the surface of the inorganic fine particle by treating the surface of the inorganic fine particle with the hydrophobizing agent and the amino group-containing coupling agent. An electrophotographic developer contains toner particles and the surface-treated inorganic fine particles.