 Slider type push button switch with safety lockout feature |
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| Safety device actuatable by seismic vibrations |
| OF THE INVENTION Referring now to FIG. 1, there is shown a first embodiment of the apparatus ... |
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| Electric capacitor with liquid cooling |
| What is claimed is: 1. An electric capacitor with liquid cooling, comprising a pair of spaced apart ... |
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| Optical fiber splicing technique |
| Illustrated in FIG. 1 is an optical fiber receiving tube 20, adapted for joining two mating ... |
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| Symmetric mixer for millimeter waves and a receiver using such a mixer |
| What is claimed is: 1. A symmetric mixer for millimiter waves of the type comprising two modules, ... |
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| Method and apparatus for determination of chemical species in perspiration |
| In one aspect, the present invention comprises a dermal patch to be worn on the skin of a subject ... |
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| Game apparatus |
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Photographic film assemblage
| Details |
Inventors: Bendoni, Leonard V.; Green, Lawrence E.;
Assignee: Polaroid Corporation (Cambridge, MA)
Primary Examiner: Hix; L. T.
Assistant Examiner: Mathews; Alan
Attorney, Agent or Firm: Corrigan; Alfred E.
A photographic film assemblage including an elongate composite film structure of the self-developing or instant type for use in conventional still type cameras of the non-self-developing or non-instant type. The composite film structure includes first and second sheets which are coiled within a cylindrical cassette such that only the first sheet is uncoiled and photographically exposed within such camera. A rupturable container of processing liquid is carried by one of the sheets. After the first sheet has been exposed, it is recoiled into the cassette and the latter is then removed from the camera and placed in a processor. The processor removes the first and second sheets from the cassette in a sequence which eventually locates the second sheet in engagement with the first sheet such that the former functions to aid the spreading of the processing liquid between the two sheets as they move between a pair of rollers to initiate the formation of a visible image within the composite film structure. |
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DETAILED DESCRIPTION The instant invention relates to a photographic film assemblage of the type including a roll of instant or self-developing type film which is adapted for use in conventional still type cameras, preferably those of the 35 mm type.
The film assemblage includes a generally cylindrical film cassette having a light sealed opening, a spool rotatably supported within the film cassette, an elongate composite film structure including a first sheet comprising a given or predetermined length of instant or self-developing type film and a second sheet, which sheets are adapted to be coiled about the spool, and a container of processing liquid which is adapted to be ruptured so as to spread its contents in contact with and between the two sheets, subsequent to the exposure of the first sheet, so as to initiate the formation of a visible image within the composite film structure.
The first and second sheets of the composite film structure are coiled about the spool in a manner which permits only the first sheet to be withdrawn from the film cassette during its exposure within a camera.
After some or all of the individual frames on the first sheet have been exposed, it is rewound upon the spool and the assemblage is then removed from the camera for processing.
The processor for the composite film structure includes a first pair of rollers for partially withdrawing the composite film structure from the film cassette and a second pair of rollers which are adapted to drive the first and second sheets in superposed relation into a dark chamber, or to the exterior of the apparatus, while simultaneously spreading the processing liquid between the sheets to initiate the formation of a visible image within the composite film structure.
If the film requires further protection from light after the spreading of the processing liquid, it will enter the dark chamber for a predetermined period of time, e.
g.
, one minute, before being removed from the dark chamber.
Otherwise, the composite film structure may exit directly into the ambient light
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I/O Systems 
