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. 28, 2014
Filed:
Jun. 30, 2011
Kanji Nakayama, Toyokawa, JP;
Masayasu Haga, Toyokawa, JP;
Tomohisa Yoshida, Toyokawa, JP;
Wataru Onoda, Toyokawa, JP;
Yoshiyuki Iguchi, Toyokawa, JP;
Noboru Ito, Kawanishi, JP;
Kanji Nakayama, Toyokawa, JP;
Masayasu Haga, Toyokawa, JP;
Tomohisa Yoshida, Toyokawa, JP;
Wataru Onoda, Toyokawa, JP;
Yoshiyuki Iguchi, Toyokawa, JP;
Noboru Ito, Kawanishi, JP;
Konica Minolta Business Technologies, Inc., Tokyo, JP;
Abstract
A two-component developing device using a developer containing toner and magnetic carrier particles. The developing device comprises a housing, a developing roller, a magnetic field generator mounted inside the developing roller, and a developer restricting member, and further comprises a developer guide member providing a developer guide path for guiding the developer to the developer amount restricting clearance, providing a developer circulation path for circulating the developer to an upstream end of the guide member, and providing a communication path for bringing the developer guide path into communication with the developer circulation path, an upstream end of the guide member being positioned above the position of a peak of magnetic flux density of the magnetic pole of the magnetic field generator which is closest to a low-magnetic force area downstream of the low-magnetic force area or positioned upstream of such a position and downstream of the low-magnetic force area. An image forming device in which such a two-component developing device is employed as at least one developing device.