US3887272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing fluid discharging apparatus for multipurpose film cassettes
Assignee: Polaroid Corp
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Filing: 1973-12-13
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Granted: 1975-06-03
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Expires: 1993-12-13
Abstract
Abstract An improved processing fluid discharging apparatus for photographic film cassettes of the type in which a strip of photographic film is exposed, processed and projected for viewing without removal of the film from the cassette. The improved apparatus prevents the pumping of air to the processing fluid during the processing operation.
Inventors
- 👤 Lucretia J Weed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:21
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/26; G03B17/265
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
191 words
An applicator for treating with processing fluid an exposed strip of photographic film material having a light sensitive emulsion on one surface so as to develop viewable images on such film strip, said applicator comprising a housing including a chamber configured to receive such processing fluid, said housing including a processor nozzle having a surface formatiOn configured to confront the emulsion layer on the film strip and having an opening through said surface formation for depositing a layer of processing fluid on at least a portion of such emulsion intermediate the margins of such film strip when relative motion is effected between such film strip and said housing so as to advance such film strip across said nozzle surface, said opening having leading and trailing edges in relation to the relative motion of such film strip during processing, said surface formation extending forwardly of said leading edge and rearwardly of said trailing edge, and said surface formation forwardly of said leading edge being inclined so such film strip so as to form with said film an angle converging towards said opening and terminating in a knife-like leading edge of said opening.
Claim 2
Dependent Claim
191 words
An applicator for treating with processing fluid an exposed strip of photographic film material having a light sensitive emulsion on one surface so as to develop viewable images on such film strip, said applicator comprising a housing including a chamber configured to receive such processing fluid, said housing including a processor nozzle having a surface formatiOn configured to confront the emulsion layer on the film strip and having an opening through said surface formation for depositing a layer of processing fluid on at least a portion of such emulsion intermediate the margins of such film strip when relative motion is effected between such film strip and said housing so as to advance such film strip across said nozzle surface, said opening having leading and trailing edges in relation to the relative motion of such film strip during processing, said surface formation extending forwardly of said leading edge and rearwardly of said trailing edge, and said surface formation forwardly of said leading edge being inclined so such film strip so as to form with said film an angle converging towards said opening and terminating in a knife-like leading edge of said opening.
Claim 3
Dependent Claim
191 words
An applicator for treating with processing fluid an exposed strip of photographic film material having a light sensitive emulsion on one surface so as to develop viewable images on such film strip, said applicator comprising a housing including a chamber configured to receive such processing fluid, said housing including a processor nozzle having a surface formatiOn configured to confront the emulsion layer on the film strip and having an opening through said surface formation for depositing a layer of processing fluid on at least a portion of such emulsion intermediate the margins of such film strip when relative motion is effected between such film strip and said housing so as to advance such film strip across said nozzle surface, said opening having leading and trailing edges in relation to the relative motion of such film strip during processing, said surface formation extending forwardly of said leading edge and rearwardly of said trailing edge, and said surface formation forwardly of said leading edge being inclined so such film strip so as to form with said film an angle converging towards said opening and terminating in a knife-like leading edge of said opening.
Claim 4
Dependent Claim
191 words
An applicator for treating with processing fluid an exposed strip of photographic film material having a light sensitive emulsion on one surface so as to develop viewable images on such film strip, said applicator comprising a housing including a chamber configured to receive such processing fluid, said housing including a processor nozzle having a surface formatiOn configured to confront the emulsion layer on the film strip and having an opening through said surface formation for depositing a layer of processing fluid on at least a portion of such emulsion intermediate the margins of such film strip when relative motion is effected between such film strip and said housing so as to advance such film strip across said nozzle surface, said opening having leading and trailing edges in relation to the relative motion of such film strip during processing, said surface formation extending forwardly of said leading edge and rearwardly of said trailing edge, and said surface formation forwardly of said leading edge being inclined so such film strip so as to form with said film an angle converging towards said opening and terminating in a knife-like leading edge of said opening.
Claim 5
Dependent Claim
44 words
The apparatus recited in claim 1 wherein said surface formation forwardly of said leading edge terminates in a depending knife blade formation establishing an essentially line contact between said nozzle and the surface of the emulsion layer at the leading edge of said opening.
Claim 6
Dependent Claim
166 words
In a multipurpose film cassette containing a strip of photographic film having a light sensitive emulsion on one surface and adapted to be exposed and processed without removal from the cassette, the cassette also containing a processor for applying a coating of processing fluid on the emulsion after exposure, the improvement comprising a processor nozzle having a surface formation positioned in the cassette to confront the emulsion layer on the film strip and having an opening through said surface formation for depositing processing fluid on at least a portion of such emulsion layer intermediate the margins of such film strip, said opening having leading and trailing edges in relation to film strip travel during processing, said surface formation extending forwardly of said leading edge and rearwardly of said trailing edge and said surface formation forwardly of said leading edge being inclined to said film strip so as to form therewith an angle converging towards said opening and terminating in a knife-like leading edge of said opening.
Claim 7
Dependent Claim
166 words
In a multipurpose film cassette containing a strip of photographic film having a light sensitive emulsion on one surface and adapted to be exposed and processed without removal from the cassette, the cassette also containing a processor for applying a coating of processing fluid on the emulsion after exposure, the improvement comprising a processor nozzle having a surface formation positioned in the cassette to confront the emulsion layer on the film strip and having an opening through said surface formation for depositing processing fluid on at least a portion of such emulsion layer intermediate the margins of such film strip, said opening having leading and trailing edges in relation to film strip travel during processing, said surface formation extending forwardly of said leading edge and rearwardly of said trailing edge and said surface formation forwardly of said leading edge being inclined to said film strip so as to form therewith an angle converging towards said opening and terminating in a knife-like leading edge of said opening.
References Cited (Backward Citations)
US3785725A
Cited
US3800306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |