A LIGHT-TIGHT CASSETTE

专利名称：A LIGHT-TIGHT CASSETTE
发明人：AUBLE, Ronald, E.,GRADY, Ralph, E.申请号：US1989000791
申请日：19890301
公开号：WO89/008869P1
公开日：
19890921
专利内容由知识产权出版社提供
摘要：A light-tight cassette (10) is disclosed for handling and dispensing a roll of photosensitive web material (22). The cassette (10)comprises a plurality of side walls (14, 16, 18, 20) erected or formed from a single sheet of material in which the ends thereof are folded back upon themselves in a triangular configuration to define a pair of faceted tubes (28, 30). When the cassette (10) is assembled, a narrow web exit passageway (32) is defined by two opposed facets (34, 36) of the respective tubes (28, 30). The side walls (14, 16, 18, 20) comprise first and second side walls (14, 16) of convexly outwardly curved cross sections adjacent to the tubes (28, 30). A pair of end closure caps (26) serve to close the side edges (48, 54, 50, 52) of the side walls (14, 16, 18, 20) and to support the roll (22) and core (24) for unwinding rotation. Each end cap (26) has a plurality of beveled corners (65) merging with straight channels (62) for receiving complementary side eges (48, 54, 50, 52) of the side walls (14, 16, 18, 20) so that when the curved side edges (48, 54) of the first and second side walls (14, 16) are inserted into complementary corner relief areas (65) and straight channels (62), forces are generated within the curved side walls (14, 16) causing the opposed facets (34, 36) to define the exit passageway (32) with a substantially constant passageway width from one of the side edges (48, 54) of the side walls (14, 16) to the opposite side edges (48, 54) of the side walls (14, 16). The tubes (28, 30) of the exit
passageway (32) subject the exiting web material to a substantially constant minimal pressure across the width thereof, and maximize the cassette beam strength.
申请人：EASTMAN KODAK COMPANY
地址：US
国籍：US
代理机构：DIXON, William, C., III
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