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:
Nov. 02, 1993
Filed:
Feb. 20, 1992
Takatomo Fukumoto, Osaka, JP;
Takashi Teshima, Ibaragi, JP;
Kazuhiko Yamamura, Higashi-osaka, JP;
Kyouya Taguchi, Nishinomiya, JP;
Hiroyuki Hazama, Itami, JP;
Takeshi Higuchi, Yamato-kouriyama, JP;
Koji Honda, Higashi-osaka, JP;
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
Disclosed is a two-component type developer comprising a toner and a coated magnetic carrier wherein said toner has an electroconductivity lower than 3.5.times.10.sup.-10 S/cm and the coating of said magnetic carrier consists of a silicone resin having as its component unit a basic nitrogen atom-containing organic group bonded to a silicone atom (N-containing silicone resin). Such developer is capable of forming images having a high image density and a high image quality, particularly as a white developer or a color developer if developing is carried out even under ordinary conditions, since the toner has its charge quantity maintained in an appropriate range in the developing step.