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. 26, 2010
Filed:
Jun. 06, 2007
Junya Hirayama, Takarazuka, JP;
Toshiya Natsuhara, Takarazuka, JP;
Masahiko Matsuura, Suita, JP;
Takeshi Maeyama, Kawanishi, JP;
Shigeo Uetake, Takatsuki, JP;
Junya Hirayama, Takarazuka, JP;
Toshiya Natsuhara, Takarazuka, JP;
Masahiko Matsuura, Suita, JP;
Takeshi Maeyama, Kawanishi, JP;
Shigeo Uetake, Takatsuki, JP;
Konica Minolta Business Technologies, Inc., Tokyo, JP;
Abstract
A compact development apparatus using a two-component developer and an image forming apparatus wherein carrier deterioration is prevented to ensure formation of a high-quality image for a long time. The development apparatus uses the developer made up of a mixture of toner, carrier, and opposite polarity particles to be charged oppositely to the toner wherein the opposite polarity particles contain the particles having a relative dielectric constant of 6.7 or more.