Importance

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Abstract

A testing device for bank notes, or similar instruments of payment in sheet form for automatic vending machines, has a testing channel (20) with a transport device (7) and scanning devices for recognizing and checking the authenticity of the bank note (3). An input channel (2) of variable width is in front of the testing channel (20). The input channel (2) includes two channel halves (21), one on either side of the longitudinal center axis (22) of the input channel (2). The two channel halves (21) can be adjusted synchronously against the force of a spring. In their contact position, the channel halves (21) determine the minimum width of the channel, and in their separated end position they determine the maximum width. A bank note (3) of any type is introduced into the input channel (2) at its locked maximum channel width as far as a passage detector (19) arranged in a starting region of the testing channel (20). The passage detector (19) unlocks the channel halves (21), as a result of which the side walls (23) of the channel halves (21) are pressed by the force of a spring against the bank note (3) and align it centrally with the testing channel (20).

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First Claim