Ricoh Company, Ltd.

Shoko Sato

Daisuke Ito

Daisuke Inoue

Satoshi Kojima

Osamu Uchinokura

Junichi Awamura

Satoshi Ogawa

Teruki Kusahara

Mamoru Hozumi

Tsuyoshi Sugimoto

A toner including a binder resin which contains a crystalline polyester resin and a non-crystalline polyester resin, wherein the crystalline polyester resin has at least two diffraction peaks in a range of 20&#xb0;&#x3c;2&#x3b8;&#x3c;25&#xb0; as detected by X-ray diffraction measurement, and has a melting point which is 60&#xb0; C. or higher but lower than 80&#xb0; C., and wherein the diffraction peaks each have a half width which is less than 1.0&#xb0;.

Toner containing crystalline polyester

A toner containing a binder resin, a colorant, and a releasing agent, wherein the colorant contains a mixed crystal of a C. I. PIGMENT YELLOW 185 and a C. I. PIGMENT YELLOW 139, and wherein a mass ratio of the C. I. PIGMENT YELLOW 185 to the C. I. PIGMENT YELLOW 139 (mass of the C. I. PIGMENT YELLOW 185/mass of the C. I. PIGMENT YELLOW 139) in the toner is 95/5 to 50/50.

Toner, developer, and image forming method

Growing community of inventors

Miyagi, Japan

Shoko Sato