Document Type and Number:
Japanese Patent JPS5319403
Kind Code:
B2
Abstract:
An improved photohardenable element is provided which comprises (1) a support, (2) photohardenable layer and (3) a protective cover sheet laminated to the surface of said photohardenable layer. The improvement consists of hardening a small continuous region along the edges of the photohardenable layer, i.e., by selectively exposing the region to actinic radiation. The major portion of said photohardenable layer is between said narrow continuous regions and is substantially unhardened and enexposed to actinic radiation, said narrow continuous regions being at least 0.00005 inches wide and of sufficient width to prevent excessive laminar flow of the photohardenable layer caused by pressure and temperature when the element is in stacked sheet or roll form.
Application Number:
JP10172473A
Publication Date:
June 21, 1978
Filing Date:
September 11, 1973
Export Citation:
International Classes:
H05K3/00; G03C3/00; G03F7/027; G03F7/09; G03F7/16; H01L21/027; G03F7/20