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:
Dec. 04, 2007
Filed:
Feb. 06, 2004
Takashi Yoshida, Minori, JP;
Kenji Okuna, Seto, JP;
Takashi Yoshida, Minori, JP;
Kenji Okuna, Seto, JP;
Hitachi-Omron Terminal Solutions, Corp., Tokyo, JP;
Abstract
A paper-like sheet discriminator has reference rollers for detection of a thickness of a paper-like sheet and a detection roller opposing the reference rollers. The paper-like sheet is passed between the reference rollers and the detection rollers and its thickness is detected from a displacement of the lever. Wavelength components less than a specified wavelength are extracted from a signal indicative of a thickness of the paper-like sheet passing through the respective thickness detection sensors and appearance positions on the paper-like sheet are determined at which the extracted wavelength components being less than the specified wavelength and having amplitude either not less than or less than a constant value appear. The thus determined appearance positions are collated with precedently stored appearance positions so as to discriminate genuineness/spuriousness of the paper-like sheet.