Canon Kabushiki Kaisha

Rei Hijikawa

Daisuke Yamashita

Koh Ishigami

Takakuni Kobori

Takaho Shibata

Masaharu Miura

Takeshi Ohtsu

Yuichi Mizo

Yosuke Iwasaki

Hitoshi Sano

Wakiko Katsumata

Kenta Mitsuiki

Ryo Nakajima

A toner containing a toner particle that contains a binder resin including a polyester resin, and a polyolefin resin having &#x2014;COOM that is a neutralized carboxy group with a monovalent metal ion M, wherein the polyolefin resin having &#x2014;COOM is a polymer in which a vinyl polymer is bonded to a polyolefin, a content of a monomer unit containing &#x2014;COOM in the polyolefin resin having &#x2014;COOM is 1 to 20 mass %, and in a FT-IR spectrum obtained through measurement of a large particle size-side particle group and a small particle size-side particle group obtained by dividing the toner into two substantially equal parts, on a number basis, a ratio of the intensity of a maximum absorption peak in a range from 1545 cmto 1555 cmwith respect to the intensity of a maximum absorption peak in a range from 1713 cmto 1723 cmexhibits a specific relationship.

Toner and method of producing toner

A toner that is suppressed from deteriorating owing to its long-term use and can maintain high transferability. The toner includes: a toner particle containing an amorphous polyester serving as a binder resin and a polymer A; and inorganic fine particles, wherein the polymer A includes a graft copolymer of a polyolefin and a vinyl-based polymer unit having a carboxylate anion group, and a metal ion having a valence of 2 or more.

Toner

A toner comprising a toner particle including a binder resin and a crystalline polyester resin, wherein the binder resin is an amorphous polyester resin having a linear alkyl group at a molecular chain terminal; the crystalline polyester resin is a polycondensate of a diol and a dicarboxylic acid; the number of carbon atoms Cof the linear alkyl group, the number of carbon atoms Cof the diol, and the number of carbon atoms Cof the dicarboxylic acid, excluding carbon that belongs to carboxyl groups, satisfy the following relationships; and a glass transition temperature of the toner as measured by a differential scanning calorimeter is from 40.0&#xb0; C. to 55.0&#xb0; C.8&#x2264;C&#x2264;20&#x2003;&#x2003;(1)C/C&#x2265;3.5 and 0&#x2264;|C&#x2212;C|&#x2264;3&#x2003;&#x2003;(2)C/C&#x2265;3.5 and 0&#x2264;|C&#x2212;C|&#x2264;3&#x2003;&#x2003;(3)

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Kashiwa, Japan

Rei Hijikawa