Patent JPS6239261A successfully refreshed from Google Patents.
US3774521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic developing apparatus
Assignee: EIDP Inc
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Filing: 1972-11-02
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Granted: 1973-11-27
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Expires: 1992-11-02
Abstract
Abstract Developing apparatus for the rapid development of photographic silver halide elements, e.g., sheets or plates, having a series of spaced solution-applying plates having (1) a plurality of spaced slots of small cross-section for supplying photographic treating solutions to the surface of the applying plates and to a single surface of the photographic elements passed across the applying plates, and (2) a collection and storage tray for receiving excess solution flowing over the edges of the plates. Between the applying plates are pressure or squeegee rolls for removing expended solutions, drip pans for the solutions, cover plates extending over the applying plates and flexible sealing strips at the entrance and exit lips of the cover plates, which strips are adapted to press against the back surface of the photographic elements. Metering weirs control the rate at which treating solution is expended. The apparatus can have a selfthreading drying chamber adjacent the final solution applying plate.
Inventors
- 👤 R Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:58
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/003; G03D3/00; G03D3/02; G03D3/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
237 words
An apparatus for treating a photographic element which comprises a series of spaced, separate, treating solutionapplying units and means positioned between the solution-applying units for transporting a photographic element along a path extending through the units and for removing excess treating solution from such photographic elements, each solution applying unit having: a. solution-applying means positioned below said path for applying treating solution to only the surface of such photographic element adjacent said solution-applying means, said solution-applying means consisting solely of a single horizontal solution-applying plate, with a plurality of spaced slots of small cross sections, positioned below said path; b. means for supplying treating solution to the upper surface of said plate with a force sufficient to support the photographic element over said plate and to allow the treating solution to be applied to only the surface of such photographic element adjacent said plate; and c. a sealed collection and storage container containing said plate and comprising a tray disposed beneath said plate for receiving excess treating solution flowing over the edges of said plate, and a cover disposed above said plate, said container having entrance and exity orifices located at the level of said plate and in said path for receiving such photographic film, and flexible sealing strips attached to said container at the entrance and exit orifices to prevent oxidation of the treating solution and to facilitate selfthreading of the photographiC element through the apparatus.
Claim 2
Independent Claim
237 words
An apparatus for treating a photographic element which comprises a series of spaced, separate, treating solutionapplying units and means positioned between the solution-applying units for transporting a photographic element along a path extending through the units and for removing excess treating solution from such photographic elements, each solution applying unit having: a. solution-applying means positioned below said path for applying treating solution to only the surface of such photographic element adjacent said solution-applying means, said solution-applying means consisting solely of a single horizontal solution-applying plate, with a plurality of spaced slots of small cross sections, positioned below said path; b. means for supplying treating solution to the upper surface of said plate with a force sufficient to support the photographic element over said plate and to allow the treating solution to be applied to only the surface of such photographic element adjacent said plate; and c. a sealed collection and storage container containing said plate and comprising a tray disposed beneath said plate for receiving excess treating solution flowing over the edges of said plate, and a cover disposed above said plate, said container having entrance and exity orifices located at the level of said plate and in said path for receiving such photographic film, and flexible sealing strips attached to said container at the entrance and exit orifices to prevent oxidation of the treating solution and to facilitate selfthreading of the photographiC element through the apparatus.
Claim 3
Dependent Claim
24 words
An apparatus according to claim 1, wherein the sealing strip at the exit orifice coacts with a weir on the lip of the tray.
Claim 4
Dependent Claim
11 words
An apparatus according to claim 1, wherein the cover is transparent.
Claim 5
Dependent Claim
12 words
An apparatus according to claim 1 having a tank for treating solution.
Claim 6
Dependent Claim
19 words
An apparatus according to claim 1, wherein the slots pass through the plate at less than a 90* angle.
Claim 7
Dependent Claim
22 words
An apparatus according to claim 1 which is provided with means for recirculating solution in the tray to the solution applying plate.
Claim 8
Dependent Claim
27 words
An apparatus according to claim 1 wherein said transport and solution-applying means comprise a plurality of pressure rollers between the solution-applying units through which the element passes.
Claim 9
Dependent Claim
20 words
An apparatus according to claim 7 further comprising a drip pan disposed beneath the pressure rollers to receive excess solution.
Claim 10
Dependent Claim
15 words
An apparatus according to claim 1 having a drying chamber adjacent the final solution-applying unit.
Claim 11
Dependent Claim
40 words
An apparatus according to claim 9 wherein said drying chamber has flotation drier plates with a plurality of small orifices for drying air, such photographic elements being adapted to pass between the plates while being supported by the drying air.
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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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |