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:
Nov. 07, 2006
Filed:
Sep. 09, 2005
Hiroko Sugimoto, Osaka, JP;
Takashi Nagai, Osaka, JP;
Toru Takatsuna, Osaka, JP;
Seiji Kikushima, Osaka, JP;
Hiroko Sugimoto, Osaka, JP;
Takashi Nagai, Osaka, JP;
Toru Takatsuna, Osaka, JP;
Seiji Kikushima, Osaka, JP;
Kyocera Mita Corporation, Osaka, JP;
Abstract
A magnetic toner contains, as a magnetic powder, magnetic iron oxide having an octahedral particle shape and an average particle diameter of 0.21 μm or larger and containing 18% or more by weight of FeO. The magnetic toner is so prepared as to have a bulk density A (g/cm) and a magnetic powder content B (% by weight) that fulfill the formulae 0.8≦A/B×100≦1.6 and 35≦B≦50. This alleviates the reddishness of images produced with the magnetic toner, and alleviates the disturbance of a thin toner layer on a developing sleeve and thus the fogging resulting therefrom.