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:
Jun. 08, 1993
Filed:
Sep. 06, 1991
Applicant:
Inventors:
Akihiro Watanabe, Neyagawa, JP;
Tsutomu Uezono, Sagamihara, JP;
Mitsushi Kuroki, Kumamoto, JP;
Yoshihisa Kuramae, Hirakata, JP;
Naruo Yabe, Kobe, JP;
Assignee:
Mita Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430108 ; 430111 ; 430122 ;
Abstract
A two-component developer for use in dry development of electrostatic charge pattern, comprising a mixture of magnetic carrier particles and electroscopic toner particles, characterized in that said magnetic carrier particles have a relaxation time B (msec) satisfying the equation 0<B<20 when they are situated in a dynamic state and said developer has a relaxation time A (msec) satisfying the equation: 0.35B+11<A<0.35B+14 when it is situated in a dynamic state.