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:
Mar. 18, 2008
Filed:
Jan. 24, 2002
Naohiro Hirose, Hachioji, JP;
Asao Matsushima, Hachioji, JP;
Meizo Shirose, Hachioji, JP;
Hiroshi Yamazaki, Hachioji, JP;
Naohiro Hirose, Hachioji, JP;
Asao Matsushima, Hachioji, JP;
Meizo Shirose, Hachioji, JP;
Hiroshi Yamazaki, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
A toner for developing an electrostatic image is disclosed. The arithmetic average of shape coefficient SF-1 of the toner particles calculated by Equation 1 is from 125 to 170 and a ratio of that to an arithmetic average of the shape coefficient SF-2 of the toner particles calculated by Equation 2, SF-1/SF-2, is from 1.10 to 1.52 and the ratio of the toner particles having a circle corresponding diameter measured by a flow particle image analyzer of from not less than 0.60 to less than 1.00 μm is not more than 5.0% in number. The image forming methods employing the toner are also disclosed.