Microfiche having integral indexing means

Details Microfiche having integral indexing means Microfiche having integral indexing means

1978-04-17

1979-09-25

Haroian, Harry N.

Optics: image projectors

Picture carrier

353 38, 353 27R, G03B 2308

Patent

active

041688872

ABSTRACT:
An indexing construction for microfiche elements of the type wherein the microfiche is provided with integral lens elements to define a lensfiche. The improvement comprises altering surface(s) of the microfiche to thereby define a plurality of indexing nodules. These nodules cooperate with complementary nodules on either a viewing screen or a hardness member. By virtue of this construction both alignments of the lensfiche and indexing thereof relative to a viewing screen are facilitated.

REFERENCES:
patent: 2736235 (1956-02-01), Toulon
patent: 3218924 (1965-11-01), Miller
patent: 3462219 (1969-08-01), Gumm
patent: 3712724 (1973-01-01), Courtney-Pratt
patent: 3864034 (1975-02-01), Yevick
patent: 3868179 (1975-02-01), Zeutschel

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