Title:
トナー、及び現像剤
Document Type and Number:
Japanese Patent JP6447112
Kind Code:
B2
Abstract:
A toner is provided. The toner includes particles each including a binder resin and a release agent. When the toner is analyzed by a flow particle image analyzer while limiting: 1) a particle diameter analysis range to 1.985 (μm)≰equivalent circle diameter (number based)<200.0 (μm); 2) a particle shape analysis range to 0.200≰circularity≰1.000; and 3) the number of limited particles satisfying the conditions 1) and 2) to from 4,800 to 5,200, an average circularity Rave. satisfies an inequation 0.960≰Rave.≰0.980, a mode particle diameter θmax satisfies an inequation 4.0 (μm)≰θmax≰6.0 (μm), and the number of particles having a particle diameter equal to or less than 0.75 times the mode particle diameter θmax and a circularity equal to or more than 0.980 is 1.0% or less of the number of the limited particles.
Inventors:
Satoshi Takahashi
Moriya Yoshihiro
Ryuta Inoue
Masahiko Ishikawa
Ryuki Yamaguchi
Moriya Yoshihiro
Ryuta Inoue
Masahiko Ishikawa
Ryuki Yamaguchi
Application Number:
JP2014261707A
Publication Date:
January 09, 2019
Filing Date:
December 25, 2014
Export Citation:
Assignee:
株式会社リコー
International Classes:
G03G9/08; G03G9/097
Domestic Patent References:
| JP2012220809A | ||||
| JP2010117383A | ||||
| JP2010049228A | ||||
| JP2007241031A | ||||
| JP2013228690A | ||||
| JP2012018249A | ||||
| JP2010217309A | ||||
| JP2006163302A | ||||
| JP2011215502A |
Foreign References:
| WO2011074060A1 |
Attorney, Agent or Firm:
Koichi Hirota