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:
Jun. 10, 2008
Filed:
Oct. 05, 2005
Akihiro Noguchi, Toride, JP;
Fumitake Hirobe, Ushiku, JP;
Akinori Tanaka, Kashiwa, JP;
Tadayoshi Nishihama, Abiko, JP;
Akihiro Noguchi, Toride, JP;
Fumitake Hirobe, Ushiku, JP;
Akinori Tanaka, Kashiwa, JP;
Tadayoshi Nishihama, Abiko, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The image forming apparatus includes a developing device, a movable member, a replenishment device, a developer replenishment path, and a conveyance screw so arranged within the developer replenishment path as not to come into contact with the internal wall of the developer replenishment path, wherein X (g) representing the quantity of the developer for replenishment present in the clearance section between the developer replenishment path and the conveyance screw, Y (g) representing the quantity of the developer in the developing device, Q(μC/mg) representing the absolute value of the electric charge per unit weight of the toner in the developing device, and A(μC/mg) representing the absolute value of the electric charge per unit weight of the toner relative to a 1% variation in the toner density satisfy the condition of a relationship of X≦(Y×Q)/(500×A).