Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kozue Uratani0
Michihisa Magome0
Tomohisa Sano0
Date of Patent
June 28, 2016
0Patent Application Number
144763250
Date Filed
September 3, 2014
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A toner has toner particles including a binder resin, a colorant, an ester wax and a hydrocarbon wax; and inorganic fine particles. The ester wax includes an ester compound having a structure represented by formula (1): R1—CO—O—(CH2)x—O—OC—R2; or formula (2): R3—O—OC—(CH2)x—CO—O—R4. The ester wax includes an ester compound having a highest abundance rate in an amount of 40% to 80% by mass with respect to a total amount of the ester wax in a composition distribution. The ester wax has, in differential scanning calorimetry, a peak top temperature of an endothermic peak of 65° C. to 80° C. In differential scanning calorimetry, the toner has only one endothermic peak derived from the waxes. A relationship: 3.0≦(Tw−Tt)≦8.0 is satisfied.
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