TONER, DEVELOPER, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD

A toner including: a binder resin; a releasing agent; and a colorant, wherein the binder resin contains a crystalline polyester resin and a non-crystalline polyester resin, wherein the releasing agent has an endothermic peak temperature of 60° C. to 80° C. at the second temperature rising in differe...

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Hauptverfasser: HOZUMI, MAMORU, NAGATOMO, TSUNEYASU, OHTA, YASUAKI, OKA, MASAAKI, SATOH, SYOUKO, WATANABE, MASAKI, ITO, DAISUKE, KOJIMA, SATOSHI, OGAWA, SATOSHI, KUSAHARA, TERUKI, AWAMURA, JUNICHI, HIROHARA, KIWAKO, HONDA, TAKAHIRO, UCHINOKURA, OSAMU
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A toner including: a binder resin; a releasing agent; and a colorant, wherein the binder resin contains a crystalline polyester resin and a non-crystalline polyester resin, wherein the releasing agent has an endothermic peak temperature of 60° C. to 80° C. at the second temperature rising in differential scanning calorimetry, and wherein the releasing agent is an ester wax which satisfies the following expressions (1) and (2): 1.1 Pa·s *a 2.0 Pa·s . . . Expression (1) 0.001 *b/ *a 1.00 . . . Expression (2) where in Expressions (1) and (2), *a denotes a complex viscosity (Pa·s) determined by measuring a dynamic viscoelasticity of the releasing agent at a measurement frequency of 6.28 rad/s, and *b denotes a complex viscosity (Pa·s) determined by measuring a dynamic viscoelasticity of the releasing agent at a measurement frequency of 62.8 rad/s.