US4101918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developing apparatus for light-sensitive materials comprising an evaporator for evaporating a developer medium from a solution
Assignee: Hoechst AG
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Filing: 1976-11-29
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Granted: 1978-07-18
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Expires: 1996-11-29
Abstract
Abstract This invention relates to a developing apparatus for light-sensitive material comprising elongated open trough means, partition means in said trough means dividing said trough means into sections, means providing communication between said sections, inlet and outlet means for said trough means, said inlet means being adapted to introduce solution into one of said sections and said outlet means being adapted to remove solution from another of said sections, heating means in said section containing said outlet means and being positioned below an opening of said outlet means in said trough means, and temperature sensor means connected to said heating means via thermostat means.
Inventors
- 👤 Herbert Schroter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:18
CPC Classifications
G; G03; G03D; G03D7/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
A developing apparatus for light-sensitive material comprising elongated open trough means, partition means in said trough means dividing said trough means into sections, means providing communication between said sections, inlet and outlet means for said trough means, said inlet means being adapted to introduce solution into one of said sections and said outlet means being adapted to remove solution from another of said sections, heating means in said section containing said outlet means and being positioned below an opening of said outlet means in said trough means, and temperature sensor means so positioned near said outlet means and within said trough means that, in operation, it is wholly immersed in the solution, said temperature sensor means being connected to said heating means via thermostat means.
Claim 2
Dependent Claim
125 words
A developing apparatus for light-sensitive material comprising elongated open trough means, partition means in said trough means dividing said trough means into sections, means providing communication between said sections, inlet and outlet means for said trough means, said inlet means being adapted to introduce solution into one of said sections and said outlet means being adapted to remove solution from another of said sections, heating means in said section containing said outlet means and being positioned below an opening of said outlet means in said trough means, and temperature sensor means so positioned near said outlet means and within said trough means that, in operation, it is wholly immersed in the solution, said temperature sensor means being connected to said heating means via thermostat means.
Claim 3
Dependent Claim
45 words
A developing apparatus according to claim 1 including level indicator means connected via level regulating means with dosing means, whereby additional solution is supplied to the trough means by said dosing means when a solution level in said trough means drops below a predetermined value.
Claim 4
Dependent Claim
31 words
A developing apparatus according to claim 2 in which said level regulating means operates such that said solution level corresponds to said opening of said outlet means in said trough means.
Claim 5
Dependent Claim
66 words
A developing apparatus according to claim 1 in which said inlet means is near one end wall of one of said trough means sections, said outlet means and temperature sensor means being near said end wall but in another of said sections, which also houses said heating means, and said means providing communication between said sections is at an opposite end wall of said trough means.
Claim 6
Dependent Claim
28 words
A developing apparatus according to claim 1 including chamber means enclosing said trough means, said trough means having approximately the same width as light-sensitive material to be developed.
Claim 7
Dependent Claim
16 words
A developing apparatus according to claim 5 including an additional heating means above said trough means.
References Cited (Backward Citations)
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Cited
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US2562588A
Cited
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Cited
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |