Patent US3864703A successfully refreshed from Google Patents.
US3864703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic apparatus
Assignee: Polaroid Corp
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Filing: 1974-06-03
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Granted: 1975-02-04
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Expires: 1994-06-03
Abstract
Abstract Photographic apparatus for use with a film unit of the selfdeveloping type including a chamber for locating a film unit in position for exposure and a pair of rollers mounted adjacent a leading edge of a film unit located in the exposure position. The rollers are adapted to define a longitudinally extending gap which is substantially parallel with the leading edge of the film unit located in the exposure position. Structure is provided for canting the film unit in a first direction as it is advanced from the exposure position, subsequent to exposure, toward the rollers such that the leading edge of the exposed film unit defines an acute angle with the longitudinally extending gap and in a second direction to reestablish the parallelism as the film unit enters the gap.
Inventors
- 👤 Nicholas Gold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:03
CPC Classifications
G; G03; G03D; G03D9/00; G03D9/02; G03B; G03B17/00; G03B17/28; G03B17/32; G03B17/34; G03B17/48; G03B17/50; G03B17/52
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
167 words
Photographic apparatus for use with a film unit having leading and trailing edges separated by a substantially rectangular viewing area comprising: means for locating the film unit in position for exposure; pressure-applying means adapted to define a longitudinally extending gap through which the film unit is adapted to be advanced, subsequent to exposure, to spread a processing composition across a photosensitive layer of the film unit; means for mounting said pressure-applying means with said longitudinally extending gap and the leading edge of the film unit being parallel with each other; means for canting the film unit as it is advanced from said exposure position toward said pressure-applying means such that the leading edge of the film unit defines an acute angle with said longitudinally extending gap; and means for recanting the film unit such that its leading edge is substantially parallel with said longitudinally extending gap prior to moving into said gap, whereby the processing composition is spread over an area substantially coextensive with the viewing area.
Claim 2
Dependent Claim
167 words
Photographic apparatus for use with a film unit having leading and trailing edges separated by a substantially rectangular viewing area comprising: means for locating the film unit in position for exposure; pressure-applying means adapted to define a longitudinally extending gap through which the film unit is adapted to be advanced, subsequent to exposure, to spread a processing composition across a photosensitive layer of the film unit; means for mounting said pressure-applying means with said longitudinally extending gap and the leading edge of the film unit being parallel with each other; means for canting the film unit as it is advanced from said exposure position toward said pressure-applying means such that the leading edge of the film unit defines an acute angle with said longitudinally extending gap; and means for recanting the film unit such that its leading edge is substantially parallel with said longitudinally extending gap prior to moving into said gap, whereby the processing composition is spread over an area substantially coextensive with the viewing area.
Claim 3
Dependent Claim
41 words
Photographic apparatus as defined in claim 1 further including means for mounting said canting means in position to engage the film unit and move it out of said exposure position and into engagement with said recanting means and said pressure-applying means.
Claim 4
Dependent Claim
54 words
Photographic apparatus as defined in claim 2 wherein said pressure-applying means includes at least one roller and said photographic apparatus further includes drive means operatively coupled to said one roller and said canting means whereby said one roller is rotating when said canting means moves the film unit into engagement with said one roller.
Claim 5
Dependent Claim
14 words
Photographic apparatus as defined in claim 1 wherein said recanting means includes cam means.
Claim 6
Dependent Claim
56 words
Photographic apparatus as defined in claim 4 further including means for mounting said cam means for movement between a first position out of the path of travel of the film unit as it is advanced from its exposure position to said pressure-applying means and a second position in the path of travel of the film unit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |