US3603230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film unit
Assignee: Agfa Gevaert AG
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Filing: 1969-07-09
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Granted: 1971-09-07
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Expires: 1989-07-09
Abstract
Abstract A photographic film unit for use in a camera which develops the film comprises an elongated rupturable container for processing fluid extending transversely between the photosensitive and print receiving sheets. The container is provided with a substantially centrally located gas-filled insert or with a substantially centrally located fluid-free portion which reduces the quantity of fluid in the corresponding part of the container to thus insure more satisfactory distribution of processing fluid upon rupture of the container when the film is caused to pass between two pressure-applying rolls.
Inventors
- 👤 Karl Wagner
- 👤 Hans-Peter Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:27
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/32; G03C8/34
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
101 words
A photographic film unit, comprising a pair of sheets having adjacent front portions and arranged to overlap each other at least while the outer sides thereof are subjected to pressure during travel through a developing station; and an elongated rupturable container for a supply of processing fluid located between and extending transversely of said sheets in the region of said front portions, said container comprising a longitudinally extending weakened portion remote from said front portions and substantially centrally located flow regulating means including a deformable insert arranged to reduce the quantity of processing fluid in the corresponding part of the container.
Claim 2
Dependent Claim
101 words
A photographic film unit, comprising a pair of sheets having adjacent front portions and arranged to overlap each other at least while the outer sides thereof are subjected to pressure during travel through a developing station; and an elongated rupturable container for a supply of processing fluid located between and extending transversely of said sheets in the region of said front portions, said container comprising a longitudinally extending weakened portion remote from said front portions and substantially centrally located flow regulating means including a deformable insert arranged to reduce the quantity of processing fluid in the corresponding part of the container.
Claim 3
Dependent Claim
21 words
A film unit as defined in claim 1, wherein said insert has an external surface which is impermeable to processing fluid.
Claim 4
Dependent Claim
15 words
A film unit as defined in claim 1, wherein said insert comprises a gas-filled envelope.
Claim 5
Dependent Claim
26 words
A film unit as defined in claim 3, wherein said envelope has internal surfaces provided with at least one groove extending substantially transversely of said container.
Claim 6
Dependent Claim
32 words
A film unit as defined in claim 1, wherein said insert comprises a deformable central portion and a pair of extensions each extending from said central portion and lengthwise of said container.
Claim 7
Dependent Claim
25 words
A film unit as defined in claim 5, wherein the thickness of said extensions at least approximates the thickness of said container in flattened condition.
Claim 8
Dependent Claim
122 words
A photographic film unit, comprising a pair of sheets having adjacent front portions and arranged to overlap each other at least while the outer sides thereof are subjected to pressure during travel through a developing station; and an elongated rupturable container comprising a flexible envelope for a supply of processing fluid located between and extending transversely of said sheets in the region of said front portions, said container further comprising a longitudinally extending weakened portion remote from said front portions and substantially centrally located flow-regulating means arranged to reduce the quantity of processing fluid in the corresponding part of the container, said flow regulating means constituting an integral fluid-free portion of said envelope and said fluid-free portion having a substantially triangular outline.
Claim 9
Dependent Claim
122 words
A photographic film unit, comprising a pair of sheets having adjacent front portions and arranged to overlap each other at least while the outer sides thereof are subjected to pressure during travel through a developing station; and an elongated rupturable container comprising a flexible envelope for a supply of processing fluid located between and extending transversely of said sheets in the region of said front portions, said container further comprising a longitudinally extending weakened portion remote from said front portions and substantially centrally located flow-regulating means arranged to reduce the quantity of processing fluid in the corresponding part of the container, said flow regulating means constituting an integral fluid-free portion of said envelope and said fluid-free portion having a substantially triangular outline.
Claim 10
Dependent Claim
16 words
A film unit as defined in claim 7, wherein said envelope consists of synthetic plastic material.
Claim 11
Dependent Claim
31 words
A film unit as defined in claim 7, wherein said envelope comprises a pair of panels which are bonded to each other at least along the outline of said fluid-free portions.
Claim 12
Dependent Claim
31 words
A film unit as defined in claim 7, wherein the apex of said fluid-free portion is remote from and one side thereof is adjacent and substantially parallel to said weakened portion.
Claim 13
Dependent Claim
129 words
A photographic film unit, comprising a pair of sheets having adjacent front portions and arranged to overlap each other at least while the outer sides thereof are subjected to pressure during travel through a developing station; and an elongated rupturable container comprising a flexible envelope for a supply of processing fluid located between and extending transversely of said sheets in the region of said front portions, said container further comprising a longitudinally extending weakened portion remote from said front portions and substantially centrally located flow-regulating means arranged to reduce the quantity of processing fluid in the corresponding part of the container, said flow regulating means constituting an integral fluid-free portion of said envelope adjacent to but spaced from said weakened portion so that some processing fluid is stored therebetween.
Claim 14
Dependent Claim
129 words
A photographic film unit, comprising a pair of sheets having adjacent front portions and arranged to overlap each other at least while the outer sides thereof are subjected to pressure during travel through a developing station; and an elongated rupturable container comprising a flexible envelope for a supply of processing fluid located between and extending transversely of said sheets in the region of said front portions, said container further comprising a longitudinally extending weakened portion remote from said front portions and substantially centrally located flow-regulating means arranged to reduce the quantity of processing fluid in the corresponding part of the container, said flow regulating means constituting an integral fluid-free portion of said envelope adjacent to but spaced from said weakened portion so that some processing fluid is stored therebetween.
References Cited (Backward Citations)
US2750075A
Cited
US3342600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |