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:
Dec. 26, 2006
Filed:
Jul. 15, 2004
Shinpei Kawasaki, Hachioji, JP;
Tadashi Matsudaira, Hachioji, JP;
Hiroshi Oyama, Hino, JP;
Katsunori Takahashi, Hachioji, JP;
Masayuki Watanabe, Fuchu, JP;
Shinpei Kawasaki, Hachioji, JP;
Tadashi Matsudaira, Hachioji, JP;
Hiroshi Oyama, Hino, JP;
Katsunori Takahashi, Hachioji, JP;
Masayuki Watanabe, Fuchu, JP;
Abstract
This invention provides an image forming apparatus that can suppress variations in writing densities of LED heads and form stable images. An image forming apparatus has an image retainerfor retaining a toner image, an image writing unitequipped with a plurality of LED headsto form a static latent image the image retainer, a developing unitfor developing the static latent image formed by the image writing unitwith a developing agent, a patch formation controllerfor forming patches for each LED head on the image retainer, a density detectorfor detecting the density of each patch formed by the patch formation controller, and a correction controllerfor correcting the light amount of each LED head by the density detected by the density detector