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. 21, 2015
Filed:
Jan. 31, 2013
Daiki Yamashita, Kanagawa, JP;
Yoshihiro Moriya, Shizuoka, JP;
Yukiko Nakajima, Kanagawa, JP;
Taichi Nemoto, Shizuoka, JP;
Yoshitaka Yamauchi, Shizuoka, JP;
Keiji Makabe, Shizuoka, JP;
Masahide Yamada, Shizuoka, JP;
Suzuka Amemori, Shizuoka, JP;
Daiki Yamashita, Kanagawa, JP;
Yoshihiro Moriya, Shizuoka, JP;
Yukiko Nakajima, Kanagawa, JP;
Taichi Nemoto, Shizuoka, JP;
Yoshitaka Yamauchi, Shizuoka, JP;
Keiji Makabe, Shizuoka, JP;
Masahide Yamada, Shizuoka, JP;
Suzuka Amemori, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner including a binder resin having a glass transition temperature (Tg) observed at least at one point from 25 to 65° C. in a differential scanning calorimeter at a rate of temperature increase of 5° C./min, wherein the toner has a structure in which a structure appearing as a high phase difference image is dispersed in a structure appearing as a low phase difference image in a two-dimensional phase difference image observed by tapping mode AFM, and an X-ray diffraction chart in which a peak originated from an crystalline resin is observed in a range of a diffraction angle 2θ of from 20 to 25°, and wherein a ratio (I1/I2) of an intensity of the peak originated from an crystalline resin to an intensity (I2) of a halo originated from an amorphous composition is from 0.2 to 1.