PURPOSE: To obtain the subject tape capable of foreseeing breakage of a tape reciprocating at a high speed and preventing accidents from occurring by arranging lead wires connected at the ends of the tape is a pair in a laminated structure.

CONSTITUTION: The objective tape obtained by extending lead wires (2a) and (2b) to be present in the longitudinal direction in an unperforated part (A) of the tape (T) having sprocket engaging holes 1, embedding the lead wires in a laminated structure and connecting a detector electrically conductive to a power source to the lead wires.