Patent ID: 6619478
Filing Date: 2003-09-16
Classification: B65D,G03C

Abstract:
A continuous photosensitive web having at least at one end thereof a light-shielding leader sheet which comprises a longitudinal light-shielding base sheet and a pair of heat-shrinkable light-shielding strips having a heat shrinkage ratio at 100Â° C. in the range of 5% to 30% in the longitudinal direction and a heat shrinkage ratio at 100Â° C. of less than the heat shrinkage ratio in the longitudinal direction by 1% or more in a width direction thereof, in which each of the heat-shrinkable light-shielding strips is tearable predominantly in a longitudinal direction thereof and is fixed onto a surface of each side of the light-shielding base sheet under the condition that the light-shielding strip is aligned in paralled with the side of the longitudinal base sheet to project a portion thereof from the side of the base sheet.