Thermographic reproduction apparatus with thermosensitive heat regulator

Claim 1

APPARATUS FOR THE DEVELOPMENT OF A RAY SENSITIVE SHEET CONTAINING HEAT ACTIVATABLE DEVELOPING MATERIAL, COMPRISING A PAIR OF COOPERATING SHEET TRANSPORTING MEMBERS, INCLUDING A TURNTABLE SLEEVE AND A BELT HAVING A SLEEVE EMBRACING BIGHT, OPERABLE TO CARRY A SHEET TO BE DEVELOPED FROM A SHEET RECEIVING TO A SHEET DELIVERING STATION, HEATING MEANS OPERABLE TO HEAT ONE OF SAID TRANSPORTING MEMBERS TO CONSTITUTE THE SAME AS MEANS TO HEAT A SHEET AS IT IS CARRIED, BY AND BETWEEN THE SLEEVE AND THE SLEEVE EMBRACING BIGHT OF THE BELT, FROM THE RECEIVING TO THE DELIVERY STATION, HEAT SENSING MEANS MOUNTED WIPINGLY IN HEAT EXCHANGING RELATION WITH RESPECT TO A SAID SHEET TRANSPORTING MEMBER FORMING A BODY MOVABLE RELATIVE TO THE SENSING MEANS, AND MEANS CONTROLLED BY SAID MEANS FOR REGULATING THE SHEET HEATING MEANS, SAID SENSING MEANS COMPRISING A FIBREGLASS MOUNTING STRAP IMPREGNATED WITH A TETRAFLUORETHYLENE POLYMER AND FORMED WITH A FACING LAYER OF CLEAR PLASTIC HAVING A SMOOTH BODY ENGAGING SURFACE ADAPTED FOR WIPING ENGAGEMENT WITH SAID BODY, SAID STRAP BEING FORMED WITH A POCKET BEHIND SAID FACING LAYER, A THERMISTOR FORMED WITH A FLAT FACE, SILICON CEMENT SECURING SAID THERMISTOR IN SAID POCKET IN POSITION WITH ITS FLAT FACE IN SURFACE CONTACT WITH THE BACK OF SAID FACING LAYER, AND A RESILIENT SHEET METAL BRACKET PROVIDING SPACED ANCHORING ABUTMENTS, SAID STRAP BEING SECURED ON SAID ABUTMENTS ON OPPOSITE SIDES OF SAID THERMISTOR, TO SUPPORT THE SAME IN POSITION TO PRESS SAID BODY ENGAGING SURFACE UPON SAID BODY AND THEREBY MOUNT THE THERMISTOR IN HEAT EXCHANGE RELATION WITH THE BODY, THROUGH SAID FACING LAYER.