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:
Jul. 15, 2014
Filed:
Oct. 12, 2011
Teruki Kusahara, Shizuoka, JP;
Junichi Awamura, Shizuoka, JP;
Tsuyoshi Sugimoto, Shizuoka, JP;
Hyo Shu, Kanagawa, JP;
Tomomi Suzuki, Shizuoka, JP;
Osamu Uchinokura, Shizuoka, JP;
Takahiro Honda, Shizuoka, JP;
Satoshi Kojima, Shizuoka, JP;
Satoshi Ogawa, Nara, JP;
Daisuke Inoue, Shizuoka, JP;
Koshi Sato, Miyagi, JP;
Daisuke Ito, Shizuoka, JP;
Ryuuta Yoshida, Miyagi, JP;
Syouko Satoh, Miyagi, JP;
Teruki Kusahara, Shizuoka, JP;
Junichi Awamura, Shizuoka, JP;
Tsuyoshi Sugimoto, Shizuoka, JP;
Hyo Shu, Kanagawa, JP;
Tomomi Suzuki, Shizuoka, JP;
Osamu Uchinokura, Shizuoka, JP;
Takahiro Honda, Shizuoka, JP;
Satoshi Kojima, Shizuoka, JP;
Satoshi Ogawa, Nara, JP;
Daisuke Inoue, Shizuoka, JP;
Koshi Sato, Miyagi, JP;
Daisuke Ito, Shizuoka, JP;
Ryuuta Yoshida, Miyagi, JP;
Syouko Satoh, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
To provide a toner, which contains a binder resin, a colorant, and a releasing agent, wherein the binder resin contains a low molecular weight resin component, where the low molecular weight resin component has a resin softening coefficient (A), represented by the following formula (1), satisfying A>0.165, and has storage elastic modulus (dyne/cm) G'(Tfb) satisfying G′(Tfb)≦1×10where Tfb is a flow onset temperature (° C.) of the low molecular weight resin component as measured by a capillary rheometer:=|[(1)−ln′(2)]/(1−2)|  Formula (1)(where T1 is temperature (° C.) at which storage elastic modulus G′(r1) is 1×10(dyne/cm) and T2 is temperature (° C.) at which storage elastic modulus G′(r2) is 1×10(dyne/cm) as measured by means of a viscoelasticity measuring device with measuring frequency of 1 Hz, and measuring distortion of 1 deg; and | | represents an absolute value.).