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:
Aug. 25, 2026
Filed:
May. 21, 2024
Shogo Nakamura, Kanagawa, JP;
Ayumu Hashimoto, Kanagawa, JP;
Shogo Nakamura, Kanagawa, JP;
Ayumu Hashimoto, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An image reading device includes an illuminator, an imager, a background portion, and an image processor. The illuminator irradiates a subject with visible light and invisible light. The imager receives the visible light and the invisible light reflected by the subject to capture a visible image and an invisible image. The background portion is disposed in an image capturing range of the imager. The background portion has a reflectance at a specific wavelength of the visible light equal to or higher than a lower limit of visible light reflectance, and a reflectance at a specific wavelength of the invisible light equal to or lower than an upper limit of invisible light reflectance. The image processor detects a feature of one of the subject and the background portion from at least one of the visible image and the invisible image.