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. 25, 2012
Filed:
Mar. 08, 2007
Hiroyuki Hotta, Kanagawa, JP;
Naoki Hayashi, Kanagawa, JP;
Yoshitsugu Hirose, Kanagawa, JP;
Minoru Koshimizu, Kanagawa, JP;
Tsutomu Ishii, Kanagawa, JP;
Shigehiko Sasaki, Kanagawa, JP;
Hiroyuki Hotta, Kanagawa, JP;
Naoki Hayashi, Kanagawa, JP;
Yoshitsugu Hirose, Kanagawa, JP;
Minoru Koshimizu, Kanagawa, JP;
Tsutomu Ishii, Kanagawa, JP;
Shigehiko Sasaki, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A handwriting detection sheet includes a handwriting layer, a code layer and an optical layer. The handwriting layer can display handwriting. The code layer is placed on a rear-face side of the handwriting layer. The code layer includes plural code images arranged in a matrix manner. In the code images, position codes are encoded with a light absorption material that absorbs infrared light. The optical layer is placed on a rear-face side of the code layer. The optical layer reflects infrared light and allows visible light to pass through.