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:
Sep. 01, 1992
Filed:
May. 07, 1990
Kazuhiko Adachi, Shibatamachi, JP;
Masafumi Kumano, Sendai, JP;
Ricoh Company, Ltd., Tokyo, JP;
Ricoh Research Institute of General Electronics Co., Ltd., Natori, JP;
Abstract
A total contact type image sensor includes a transparent substrate, an opaque layer formed on the transparent substrate and having document illuminating windows, a photosensitive layer formed on the transparent substrate and the opaque layer, a plurality of photoelectric conversion elements arranged on the transparent substrate with a predetermined pitch, and a transparent protection layer which covers a surface of a stacked structure which is made up of the transparent substrate, the opaque layer, a photosensitive layer and the photoelectric conversion elements. The photoelectric conversion elements respectively have at least one concave portion in a plan view of the total contact type image sensor. The document illumination windows are respectively formed on a periphery of a corresponding one of the photoelectric conversion elements with a 1:1 relationship, and the document illuminating window respectively have at least one convex portion in the plan view in correspondence with the concave portion of a corresponding one of the photoelectric conversion elements so as to surround the corresponding one of the photoelectric conversion elements.