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:
Jan. 04, 2011
Filed:
Oct. 13, 2009
Kouji Sugama, Hachioji, JP;
Masafumi Uchida, Toyokawa, JP;
Kenji Yamane, Sagamihara, JP;
Kenji Hayashi, Hachioji, JP;
Ryuji Kitani, Hino, JP;
Kouji Sugama, Hachioji, JP;
Masafumi Uchida, Toyokawa, JP;
Kenji Yamane, Sagamihara, JP;
Kenji Hayashi, Hachioji, JP;
Ryuji Kitani, Hino, JP;
Konica Minolta Business Technologies, Inc., Tokyo, JP;
Abstract
An embodiment may be an electrophotographic toner which comprises at least one toner particle which comprises an inner layer and an outer layer covering the inner layer, wherein a cross-sectional area ratio of the outer layer to the inner layer is 0.05-0.46, and wherein a non-uniform thickness exists in the outer layer, and further the average thickness (t) taken at 5 positions as calculated by, is about 0.2—about 1.0 μm, t=(t+t+t+t+t)/5 (unit of t-tis μm) wherein trepresents a thickness of the thickest part of the outer layer, and t-teach represent a thickness of a second to a fifth thickest part of the outer layer in one particle, and wherein a glass transition point Tg of the inner layer is about 2—about 45° C. lower than Tg of the outer layer.