Sheet discriminating apparatus

Check-actuated control mechanisms – Control mechanism actuated by check – other than coin – which... – By pliant currency

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382135, G07F 704, G06K 928

Patent

active

054658217

ABSTRACT:
A sheet discriminating apparatus includes a plurality of light emitting elements arranged in a plurality of lines perpendicular to a sheet conveyance direction. A plurality of light receiving elements are positioned so that each faces an associated one of the light emitting elements. When a sheet is conveyed by the light emitting elements, at least one of the light receiving elements is partially screened by the side edge of the sheet. Length detection circuitry is provided for detecting the length of the sheet in a direction perpendicular to the conveyance direction based upon outputs of the light receiving elements. Also, pattern detection circuitry is provided for determining pattern data of the sheet based upon outputs of the light receiving elements. The determined pattern data is compared to stored, reference pattern data. The outcome of the comparison and the determined length are used to discriminate the kind of sheet.

REFERENCES:
patent: 5236072 (1993-08-01), Cargill
patent: 5309515 (1994-05-01), Troung et al.
patent: 5363949 (1994-11-01), Matsubayashi
"Design for measuring dimensions/surface defects", Special Manufacture of Light Sensor Interface, pp. 169-173, Mar. 1989.

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