Abstract Coding means are disclosed for use in cooperation with photographic slides and an automatic projection apparatus, whereby specific slides can be identified for selection and projection. As disclosed in one form, the coding means comprises an adhesive tab that may be affixed either to an individual slide or to a slide magazine which carries a plurality of individual slides. The adhesive tab includes a flat base member, e.g., mylar film, with a reflective surface, carrying adhesive on one side for affixing the unit to a slide or magazine and also having adhesive on the opposed side to receive a plurality of nonreflecting sheet members for selective removal to provide reflective elements of a desired code pattern. In other exemplary forms as disclosed herein, the code elements are carried by a clamp-on metallic sheet for individual slides, and are printed on the slide magazine or molded therein during initial fabrication.
A coding means for photographic slide means to identify said slide means by a photoelectric sensing system, comprising: an elongated base member of film material defining one surface having a first light-reflective characteristic, an elongated coding sheet having a light-reflective characteristic different from said first, affixed to said one surface of said base member, said coding sheet being perforated to define a multiplicity of sections for select removal from said base member to provide a light-indicative code; and fixing means for fixing said coding means to a photographic slide, including a layer of adhesive disposed on the other surface of said base member.
Claim 2
Dependent Claim
103 words
A coding means for photographic slide means to identify said slide means by a photoelectric sensing system, comprising: an elongated base member of film material defining one surface having a first light-reflective characteristic, an elongated coding sheet having a light-reflective characteristic different from said first, affixed to said one surface of said base member, said coding sheet being perforated to define a multiplicity of sections for select removal from said base member to provide a light-indicative code; and fixing means for fixing said coding means to a photographic slide, including a layer of adhesive disposed on the other surface of said base member.
Claim 3
Dependent Claim
29 words
A photographic slide means including an image-bearing film, a mounting frame supporting said image-bearing film, and a coding means as defined by claim 1 affixed to said mounting frame.
Claim 4
Dependent Claim
28 words
A photographic slide according to claim 2 wherein said mounting frame is substantially rectangular defining four edges, and said coding means is affixed on one of said edges.
Claim 5
Dependent Claim
38 words
A photographic slide means including a slide magazine for supporting a plurality of individual slides in storage locations and further including coding means in accordance with claim 1 affixed to said magazine to identify each of said locations.
Claim 6
Dependent Claim
23 words
A coding means according to claim 1 wherein said coding sheet carries indicia to indicate a numerical value for said multiplicity of sections.