System for detecting paper money or the like and controlling dispensing apparatus

Claim 1

A BILL CHANGER ADAPTED TO TEST, VALIDATE AND ACCEPT, AND THEREAFTER TO EXCHANGE CREDIT FOR A BILL HAVING BEEN ACCEPTED; COMPRISING A PLURALITY OF LIGHT-RESPONSIVE, SIGNALEMISSIVE CELLS ADJACENT THE BILL IN TEST TO RESPOND TO THE SURFACE CHARACTERISTICS OF THE BILL IN TEST; A TRIGGER CIRCUIT COMMONLY CONNECTED TO ALL SAID CELLS AND ASSUMING A FIRST CONDITION IN RESPONSE TO A SIGNAL FROM ANY ONE OF SAID CELLS INDICATIVE OF A SPURIOUS BILL IN TEST, AND MEANS RESPONSIVE TO THE TRIGGER CIRCUIT ASSUMING ITS FIRST CONDITION FOR REJECTING THE BILL IN TEST AND FOR SUMMARILY TERMINATING THE TEST THEREUPON; SAID TRIGGER CIRCUIT ASSUMING A SECOND CONDITION IN THE ABSENCE OF A SIGNAL FROM ANY OF SAID CELLS FOR ACCEPTING A VALID BILL IN TEST, MEANS OPERATIVELY ONLY ON SAID TRIGGER CIRCUIT REMAINING IN SECOND CONDITION DURING A BILL TEST FOR CAUSING REMOVAL OF THE BILL FROM TEST, SAID CELLS TRANSFERRING SAID TRIGGER CIRCUIT FROM SAID SECOND CONDITION TO SAID FIRST CONDITION CONSEQUENT TO THE SUCCESS-