The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2016
Filed:
Sep. 03, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
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): R—CO—O—(CH)—O—OC—R; or formula (2): R—O—OC—(CH)—CO—O—R. 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.