TONER, TONER STORED UNIT, AND IMAGE FORMING APPARATUS

WIPO Patent Application WO/2019/142630

A1

Provided is a toner including toner particles, each toner particle includes: a base particle including a binder resin; and external additive particles, wherein the external additive particles include particles each having an equivalent circle diameter of 10 nm or greater, a volume average particle diameter of the particles each having an equivalent circle diameter of 10 nm or greater is 80 nm or greater but 140 nm or less, and a ratio (circumscribed circle area/particle area) of a circumscribed circle area of the particle having an equivalent circle diameter of 10 nm or greater to a particle area of the particle having an equivalent circle diameter of 10 nm or greater is 1.60 or greater but 2.60 or less.

JPH0721678	[Title of the Invention] A charge-imparting member for developing an electrostatic charge image.
JP2021155718	POLYESTER RESIN AND METHOD FOR PRODUCING THEREOF, AND TONER

KANEKO AKIHIRO (JP)
SUZUKI KAZUMI (JP)
NAKAJIMA HISASHI (JP)
YAMAUCHI YOSHITAKA (JP)
OGINO KOHTAROH (JP)
SUZUKI TERUYUKI (JP)
SUZUKI NAMIE (JP)

PCT/JP2018/047727

July 25, 2019

December 26, 2018

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RICOH CO LTD (JP)
KANEKO AKIHIRO (JP)
SUZUKI KAZUMI (JP)
NAKAJIMA HISASHI (JP)
YAMAUCHI YOSHITAKA (JP)
OGINO KOHTAROH (JP)
SUZUKI TERUYUKI (JP)
SUZUKI NAMIE (JP)

G03G9/097

US20130196259A1	2013-08-01
US20140295340A1	2014-10-02
US20170227876A1	2017-08-10
US20170075242A1	2017-03-16
JP2007264142A	2007-10-11
JP2009229621A	2009-10-08
JP2006030662A	2006-02-02
JPS564464A	1981-01-17

HIROTA, Koichi (JP)

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