The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 1991
Filed:
Jan. 10, 1989
Applicant:
Inventors:
Yasuji Yui, Kanagawa, JP;
Akira Shirakura, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430138 ; 430496 ; 430500 ; 430501 ; 352235 ; 354275 ;
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.