Imaging sheet roll containing photosensitive microcapsules

Details Imaging sheet roll containing photosensitive microcapsules Imaging sheet roll containing photosensitive microcapsules

1989-01-10

1991-01-22

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

430496, 430500, 430501, 352235, 354275, G03C 172, G03C 302

Patent

active

049870475

ABSTRACT:
An imaging sheet roll has a spool on which is wound a film coated with photosensitive microcapsules to form a roll of film between flanges extending radially at the opposite ends of the spool and provide with annular step portions, and a leader tape of a material that is impermeable to light is bonded to the end portion of the film at which the latter unwinds from the spool and has a transverse width greater than that of the film. The leader tape is wound around the annular step portions of the flanges to seat thereagainst and prevent irradiation by light of the photosensitive microcapsules coating the film wound on the spool.

REFERENCES:
patent: 4291966 (1981-09-01), Bendoni et al.
patent: 4423943 (1984-01-01), Gold
patent: 4782003 (1988-11-01), Yoshihara
patent: 4788125 (1988-11-01), Davis et al.
patent: 4833062 (1989-05-01), Kakimi

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