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. 02, 2010
Filed:
Mar. 23, 2010
Tomoaki Miyazawa, Mishima, JP;
Takeshi Yamamoto, Yokohama, JP;
Manami Haraguchi, Yokohama, JP;
Kenta Kubo, Suntou-gun, JP;
Juun Horie, Mishima, JP;
Tomoaki Miyazawa, Mishima, JP;
Takeshi Yamamoto, Yokohama, JP;
Manami Haraguchi, Yokohama, JP;
Kenta Kubo, Suntou-gun, JP;
Juun Horie, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a photosensitive drum to which an electrostatic image is formed and a developing sleeve carrying a developer including toner carrier. An alternating voltage is applied to the sleeve to form an alternating electric field between the sleeve and the drum to develop the electrostatic image with the developer. A relation |K|<|K| is satisfied, where K: a slope at an electric field intensity Ed=|(Vp−VL)/D|, K: a slope at an electric field intensity Eb=|(Vp−VL)/D|, VL: a potential [V] of the electrostatic image at which a maximum density is obtained, Vp: a peak potential [V] that provides a potential difference to move the toner toward the drum, Vp: a peak potential [V] that provides a potential difference to move the toner toward the sleeve, and D: a closest distance [m] between the drum and the sleeve.