Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takashi Hirasa0
Kouichirou Ochi0
Ryuji Murayama0
Takaho Shibata0
Tomoyo Miyakai0
Yuya Chimoto0
Daisuke Yamashita0
Hayato Ida0
...
Date of Patent
March 12, 2019
0Patent Application Number
158730200
Date Filed
January 17, 2018
0Patent Citations Received
...
Patent Primary Examiner
Patent abstract
A toner comprising a toner particle that contains a hybrid resin A and a crystalline polyester resin B, wherein the hybrid resin A has a polyester segment, and a polypropylene glycol segment that has a number-average molecular weight of at least 300, the polyester segment has a structure derived from a condensation reaction between a dicarboxylic acid and a diol, and has an aromatic ring in at least one of the dicarboxylic acid and the diol, and the following condition is satisfied:|SPh−SPc|−|SPp−SPc|<1where, SPh is SP value of the polyester segment of the hybrid resin A, SPc is SP value of the crystalline polyester resin B, and SPp is SP value of the polypropylene glycol segment of the hybrid resin A.
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