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. 05, 2018
Filed:
Jan. 05, 2016
Daisuke Inoue, Shizuoka, JP;
Naohiro Watanabe, Shizuoka, JP;
Ryota Inoue, Shizuoka, JP;
Masana Shiba, Shizuoka, JP;
Junichi Awamura, Shizuoka, JP;
Shingo Sakashita, Shizuoka, JP;
Tomoki Murayama, Kanagawa, JP;
Yoshitsugu Kimura, Kanagawa, JP;
Rintaro Takahashi, Kanagawa, JP;
Akio Takei, Shizuoka, JP;
Daisuke Inoue, Shizuoka, JP;
Naohiro Watanabe, Shizuoka, JP;
Ryota Inoue, Shizuoka, JP;
Masana Shiba, Shizuoka, JP;
Junichi Awamura, Shizuoka, JP;
Shingo Sakashita, Shizuoka, JP;
Tomoki Murayama, Kanagawa, JP;
Yoshitsugu Kimura, Kanagawa, JP;
Rintaro Takahashi, Kanagawa, JP;
Akio Takei, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner comprising a binder resin and a release agent, wherein the toner has a difference of 30 or less between a maximum value and a minimum value among peak intensities in a range of Molecular weight M±300 where Molecular weight M is a molecular weight selected from a range of from 300 through 5,000 in a molecular weight distribution of tetrahydrofuran (THF)-soluble components in the toner as measured by gel permeation chromatography (GPC), and wherein the peak intensities are defined as relative values assuming a maximum peak value in molecular weights of 20,000 or less is 100, in a molecular weight distribution curve taking an intensity as a vertical axis and a molecular weight as a horizontal axis as measured by GPC.