Photocopying – Projection printing and copying cameras – Identifying – composing – or selecting
Patent
1989-08-14
1990-10-23
Mathews, A. A.
Photocopying
Projection printing and copying cameras
Identifying, composing, or selecting
354 75, 354106, 352236, 430496, G03B 1724, G03B 2752, G03C 176
Patent
active
049656279
ABSTRACT:
A virtually transparent magnetic layer is included as an additional layer in a color negative film. Information exchange between various users of the film--such as (for example) the film manufacturer, the camera user, the dealer and photofinisher--is carried via plural longitudinal magnetic tracks on the film, each track being dedicated to the writing and reading of a predetermined set of related parameters. The photofinisher-dedicated track locations fill the exposed image area of each frame. The camera-dedicated tracks lie along the edges of the film between the film perforations, the perforations being widely spaced for this purpose. All data is recorded as individual pieces of information individually identified by virtual data identifiers so as to minimize the recording overhead of non-information-bearing data.
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Eastman Kodak Company
Mathews A. A.
Smith James A.
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