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:
Feb. 12, 2013
Filed:
Mar. 19, 2012
Yasukazu Ayaki, Yokohama, JP;
Atsushi Tani, Suntou-gun, JP;
Tsuneyoshi Tominaga, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner in which, in a loss tangent (tan δ) curve obtained by a dynamic viscoelasticity test, the tan δ shows a maximal value δa in the temperature region of 28.0-60.0° C., which maximal value δa is 0.50 or more, and shows a minimal value δb in the temperature region of 45.0-85.0° C., which minimal value δb is 0.60 or less, where the difference between the maximal value δa and the minimal value δb is 0.20 or more; and, where the temperature that affords the maximal value δa is represented by Ta (° C.) and the temperature that affords the minimal value δb is represented by Tb (° C.), the difference between the Ta and the Tb is 5.0-45.0° C.; and the toner having, in a storage elastic modulus (G') curve obtained by the dynamic viscoelasticity test, a value G′a of a storage elastic modulus at the Ta, of 1.00×10-5.00×10Pa.