Sealed photographic film roll

Claim 1

A COMPOSITE PHOTOGRAPHC PRODUCT COMPRISING A LENGTH OF SHEET MATERIAL FORMED INTO A ROLL, THE OUTER LAYERS OF SAID ROLLED-UP SHEET CONSTITUTING A LEADER FOR THREADING SAID SHEET INTO PHOTOGRAPHIC APPARATUS, AND A RUPTURABLE SEAL SEALING ONE OF SAID OUTER LAYERS TO THE NEXT INNER LAYER SO THAT THE LAYERS OF SAID ROLL BENEATH SAID LASTNAMED OUTER LAYER ARE KEPT FROM UNWINDING, A PORTION OF THE LENGTH OF SAID SHEET MATERIAL EXTENDING BEYOND SAID SEAL AND BEING FREE TO UNWIND FROM SAID ROLL WITHOUT RUPTURING SAID SEAL, SAID PORTION CONSTITUTING THE FREE END OF SAID LEADER, SAID LEADER HAVING AT LEAST ONE HOLE THEREIN AT SAID SEAL, SAID SEAL COMPRISING A STRIP OF TAPE SECURED TO THE OUTER SURFACE OF SAID LEADER AND AT LEAST PARTIALLY COVERING SAID HOLE, AND A PRESSURE-SENSITIVE ADHESIVE COATING ON THAT SURFACE OF SAID TAPE ADJACENT SAID LEADER, SAID STRIP BEING SUFFICIENTLY LONG TO COVER THAT PORTION OF THE NEXT INNER LAYER OF SAID ROLLED-UP SHEET WHICH UNDERLIES SAID HOLE, SAID COATING HAVING LESS AFFINITY FOR THE OUTER SURFACE OF THE INNER LAYER OF SAID TAPE THAN FOR SAID LEADER.