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:
May. 16, 2017
Filed:
Jun. 23, 2016
Akio Kosuge, Kanagawa, JP;
Natsumi Matsue, Kanagawa, JP;
Keiko Matsumoto, Kanagawa, JP;
Akira Yoshida, Tokyo, JP;
Yoichi Sakurai, Kanagawa, JP;
Yuuichiroh Uematsu, Kanagawa, JP;
Kohta Fujimori, Kanagawa, JP;
Kayoko Tanaka, Tokyo, JP;
Akio Kosuge, Kanagawa, JP;
Natsumi Matsue, Kanagawa, JP;
Keiko Matsumoto, Kanagawa, JP;
Akira Yoshida, Tokyo, JP;
Yoichi Sakurai, Kanagawa, JP;
Yuuichiroh Uematsu, Kanagawa, JP;
Kohta Fujimori, Kanagawa, JP;
Kayoko Tanaka, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes an image bearer, an image forming device to form a toner image on the image bearer, a transfer device to transfer the toner image to a recording medium, a line sensor as an image density sensor to detect image density of the toner image, and a controller operatively connected to the image density sensor. The image density sensor is disposed so as to be shorter in a rotational direction of the image bearer than in a width direction of the image bearer perpendicular to the rotational direction of the image bearer. The controller forms a shading pattern image including a plurality of patches on the image bearer, and detects image density of the plurality of patches, so as to control image density. The shading pattern image is shorter in the rotational direction of the image bearer than in the width direction of the image bearer.