Photographic copying apparatus timing control system

Claim 1

IN A PHOTOGRAPHIC COPYING DEVICE HAVING A COPY SHEET FEEDING MEANS, A PROCESSING TRAY HAVING A SOLUTION FOR PROCESSING A MATRIX, MEANS FOR INDICATING THE LENGTH OF TIME SAID MATRIX IS PROCESSED, A PRESSURE MECHANISM AT THE ENTRANCE OF SAID TRAY MOVABLE BETWEEN AN OPEN POSITION TO ALLOW INSERTION OF A MATRIX INTO THE SOLUTION IN THE TRAY AND A CLOSED POSITION FOR PRESSING A COPY SHEET AND MATRIX INTO INTIMATE PRESSURE CONTACT UPON REMOVAL OF THE TWO FROM THE PROCESSING TRAY; THE IMPROVEMENT COMPRISING: CONTROL MEANS FOR SAID DEVICE INCLUDING FIRST AND SECOND SWITCHES RESPONSIVE TO MOVEMENT OF SAID PRESSURE MECHANISM TO ITS OPEN POSITION TO ENERGIZE SAID COPY SHEET FEEDING MEANS TO FEED A COPY SHEET, AND TO CONNECT SAID FIRST SWITCH IN CIRCUIT WITH SAID INDICATING MEANS, RESPECTIVELY, SAID PRESSURE MECHANISM WHEN RETURNED TO ITS CLOSED POSITION DEENERGIZING SAID COPY SHEET FEEDING MEANS AND ENERGIZING SAID INDICATING MEANS THROUGH SAID FIRST SWITCH, SAID CONTROL MEANS FURTHER INCLUDING RESET MEANS INTERPOSED BETWEEN SAID INDICATING MEANS AND SAID SECOND SWITCH AND RESPONSIVE TO SAID INDICATING MEANS AFTER IT HAS TIMED THE PROCESSING PERIOD OF SAID MATRIX TO DISCONNECT SAID FIRST SWITCH FROM AND THEREBY DEENERGIZE SAID INDICATING MEANS.