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. 24, 2013
Filed:
Nov. 22, 2011
Kenichi Numakura, Nagano, JP;
Yoshihiro Ueno, Nagano, JP;
Masahiro Oki, Saitama, JP;
Tsutomu Teraoka, Nagano, JP;
Kenichi Numakura, Nagano, JP;
Yoshihiro Ueno, Nagano, JP;
Masahiro Oki, Saitama, JP;
Tsutomu Teraoka, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid developer is provided. The liquid developer includes a liquid insulator and toner particles. The liquid insulator toner particles include a resin material, a colorant, a substance A, a substance B, and a substance C. The substance A is an acrylic-modified silicone. The substance B is at least one selected from the group consisting a quaternary cationic silicone, an aminophenyl-modified silicone, and a phenyl-modified silicone. The substance C is at least one of a silanol-containing polysiloxane and a fluorine-modified silicone. The average degree of roundness Rof the toner particles is 0.890 or greater, if the degree of roundness is expressed as L/L, where L(μm) is a circumference of a profile view of a measured particle and L(μm) is the circumference of a perfect circle of a circumference of a profile view corresponding to the profile view of the measured particle.