1988-11-14
1989-06-13
Lee, John D.
350 9625, G02B 608
Patent
active
048386421
ABSTRACT:
A fibre plate comprising a stack of rows of glass fibre bundles and with or without light absorptive fibres in interstices thereof. A number of auxiliary glass fibre bundles are located in predetermined positions in a peripheral area of the face of the plate, having a light transmission characteristic differing from the bundles in the image-forming area of the plate. The positions of the auxiliary bundles with respect to an axis of symmetry of the plate are set in accordance with a code identifying the plate, such as a date or a stack number.
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patent: 3652855 (1972-03-01), McIntyre et al.
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patent: 3797910 (1974-03-01), Westwig
patent: 4185888 (1980-01-01), Quelle, Jr.
patent: 4573082 (1986-02-01), Teskey
patent: 4640035 (1987-02-01), Kind et al.
De Jong Augustinus C. G.
Schrederhof Antonie
Botjer William L.
Heartney Phan T.
Lee John D.
U.S. Philips Corp.
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