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:
Apr. 19, 2016
Filed:
Sep. 09, 2014
Konica Minolta, Inc., Chiyoda-ku, JP;
Nofumi Mizumoto, Nara, JP;
Naoki Yoshie, Ibaraki, JP;
Yuya Iwagoe, Kyoto, JP;
Satoshi Matsumoto, Kyoto, JP;
KONICA MINOLTA, INC., Chiyoda-Ku, Tokyo, JP;
Abstract
A liquid developer is obtained by dispersing toner particles containing a core resin, a shell resin different from the core resin, and a coloring agent in an insulating liquid. The core resin contains a crystalline urethane-modified polyester resin. A solid content of the liquid developer corresponding to a portion of the liquid developer excluding the insulating liquid has a storage elastic modulus at 80° C., not lower than 1×10Pa and not higher than 5×10Pa. A lowest temperature at the time when an absolute value of an amount of change in a logarithmic value (log(G')) of a storage elastic modulus (G′) of the solid content of the liquid developer with respect to a temperature T (° C.) (|Δ log(G′)/ΔT|) satisfies an Equation (1) below is not lower than 45° C.:|Δ log(′)/Δ|>0.1  Equation (1).