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. 20, 2005
Filed:
Mar. 08, 2004
Hisashi Shoji, Kanagawa, JP;
Tsukuru Kai, Kanagawa, JP;
Kei Yasutomi, Kanagawa, JP;
Nekka Matsuura, Kanagawa, JP;
Nobutaka Takeuchi, Kanagawa, JP;
Hirokatsu Suzuki, Chiba, JP;
Hisashi Shoji, Kanagawa, JP;
Tsukuru Kai, Kanagawa, JP;
Kei Yasutomi, Kanagawa, JP;
Nekka Matsuura, Kanagawa, JP;
Nobutaka Takeuchi, Kanagawa, JP;
Hirokatsu Suzuki, Chiba, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electrophotographic image forming apparatus of the present invention frees images from various defects including the thinning of horizontal lines, the omission of the trailing edge of an image, background contamination, granularity particular to a halftone image, carrier scattering, and image noise. Further, the apparatus of the present invention solves problems ascribable to patches used to sense image density. Moreover, the apparatus of the present invention faithfully reproduces tonality and has a high developing ability.