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:
Feb. 01, 2011
Filed:
Jul. 20, 2005
Applicants:
Masuyoshi Yachida, Kanagawa, JP;
Yoichi Kanai, Kanagawa, JP;
Inventors:
Masuyoshi Yachida, Kanagawa, JP;
Yoichi Kanai, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N 1/44 (2006.01); H04L 29/00 (2006.01); G06F 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An image forming apparatus configured to generate image data by reading information in a paper, includes a machine signature generation part configured to generate a first electronic signature for the image data by using a secret key peculiar to the image forming apparatus, and an operator signature generation part configured to generate a second electronic signature for the image data by using a secret key peculiar to an operator of the image forming apparatus.