(19)
(11) EP 0 280 147 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
31.01.1990 Bulletin 1990/05

(43) Date of publication A2:
31.08.1988 Bulletin 1988/35

(21) Application number: 88102194.3

(22) Date of filing: 15.02.1988
(51) International Patent Classification (IPC)4: G07D 1/00, B65H 7/12
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 25.02.1987 JP 40383/87

(71) Applicant: OMRON TATEISI ELECTRONICS CO.
Kyoto 616 (JP)

(72) Inventors:
  • Mizunaga, Kazuhiro Omron Tateisi Electronics Co.
    Nagaokakyo-City Kyoto 617 (JP)
  • Ohno, Takashi Omron Tateisi Electronics Co.
    Nagaokakyo-City Kyoto 617 (JP)
  • Hase, Takashi Omron Tateisi Electronics Co.
    Nagaokakyo-City Kyoto 617 (JP)
  • Tsuchitani, Norio Omron Tateisi Electronics Co.
    Nagaokakyo-City Kyoto 617 (JP)

(74) Representative: WILHELMS, KILIAN & PARTNER Patentanwälte 
Eduard-Schmid-Strasse 2
81541 München
81541 München (DE)


(56) References cited: : 
   
       


    (54) Paper sheet handling apparatus


    (57) Two thickness detectors (5) each for outputting an electric signal representing the thickness of a paper sheet(B) passing thereby are arranged side by side in the width direction of a paper sheet conveyance path (3). Parameters such as paper sheet thickness, length, the existence of skew and, if skew exists, the skew angle (ϑ), are calculated based on the output signals from the thickness detectors. This facilitates detection of two or more overlapping bank notes among a wide variety of bank notes having different thicknesses or in case of a bank note having a significantly non-uniform thickness. The correct thickness of a paper sheet is also obtained at all times by using the skew angle and the reference length (W) of the paper sheet. This not only facilitates detection of two overlapping bank notes among a wide variety of bank notes having different thicknesses or in case of a bank note having a significantly non-uniform thickness, but also enables detection to be made very accurately. The number of paper sheets being conveyed past the thickness detectors at one time is determined based on the output signals of the thickness sensors. If the number of sheets has been reliably determined, this number of sheets is released even when sheets are being conveyed in an overlapping state and not just singly.







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