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Paper sheet thickness detection device

A technology for thickness detection and paper, applied in the field of thickness measurement devices, can solve problems such as inability to distinguish response signals

Inactive Publication Date: 2010-06-23
FUJITSU LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In this way, it is impossible to distinguish whether the change in the response signal is due to a change in the thickness of the paper such as a crease or due to a foreign object such as a tape attached to the paper. Therefore, there is a problem that it is difficult to detect only the foreign object attached to the paper.

Method used

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Embodiment Construction

[0041] Below, according to Figure 3 ~ Figure 11 Embodiments of the present invention will be described.

[0042] image 3 It is a figure explaining the operating principle of the paper thickness detecting device of the embodiment of the present invention.

[0043] image 3 The shown paper thickness detecting device 300 has: when a paper 304 such as a banknote or copy paper is inserted, a first sensor 301 and a second sensor 302 whose capacitance changes; signal (eg Figure 8A and Figure 8B signal shown. Hereinafter referred to as “response signal”), the thickness detection unit 303 detects the thickness of the paper 304 .

[0044] The first sensor 301 is composed of a plurality of capacitance sensors (hereinafter, the capacitance sensors are simply referred to as “sensors”) including a first application electrode and a first detection electrode. In addition, the first application electrode may be constituted by one common electrode.

[0045] In addition, each sensor of...

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Abstract

A paper sheet thickness detection device which can reliably detect a foreign matter adhering to a paper sheet. A paper sheet thickness detection device (300) comprises a first sensor (301) and a second sensor (302) which detect a change of an electrostatic capacity when a paper sheet (304) such as a bill or a copier paper is inserted, and a thickness detection unit (303) which detects the thickness of the paper sheet (304) by using the signals obtained from the first sensor (301) and the second sensor (302).

Description

technical field [0001] The present invention relates to an apparatus for measuring the thickness of paper such as banknotes. Background technique [0002] An automatic teller machine (ATM: Automatic Teller Machine) has various sensors for performing various measurements on inserted banknotes, and performs currency type discrimination, counterfeit checks, and the like. [0003] One of the measurements that an ATM makes on an inserted note is the thickness measurement. By measuring the thickness, it can be detected that a plurality of banknotes are stacked due to an abnormality in conveyance of the banknotes, and it can be determined whether or not the banknotes are normal banknotes. Also, by detecting the distribution of the local thickness, it is possible to check whether there is foreign matter on the paper. [0004] Generally, as a method of measuring the thickness of paper, there is known a method in which two rollers clamp the paper by applying pressure to measure the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H7/06G01B7/06G07D7/16G07D7/026G07D7/182G07D7/189
CPCB65H2511/13B65H2553/232B65H7/02G07D7/026G07D7/164B65H2553/23G01B7/087G01B7/06B65H2511/162B65H2515/712B65H2511/16B65H2515/70B65H2220/03B65H2220/01
Inventor 宫本晶规
Owner FUJITSU LTD
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