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US4174901A
Expired / Lapsed
US
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Film squeegee mechanism of automatic film developing apparatus
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1977-06-03
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Granted: 1979-11-20
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Expires: 1997-06-03
Abstract
Abstract A film squeegee mechanism of an automatic film developing apparatus including developing, fixing and washing means. Film squeegee means incorporated in the film transport means contacting with film to be treated with proper pressure and relative speed to film surface are provided between two liquid treating tanks of film transport means of the automatic film developing apparatus, scraping off liquid and minimizing the amount of treating liquids carried over by the film from one tank to the next.
Inventors
- 👤 Nobuhiro Takita
- 👤 Tadashi Shintani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:24
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/132; G03D15/00; G03D15/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
A film squeegee mechanism for an automatic film developing apparatus including a plurality of processing tanks and a plurality of suitably disposed transport rollers adapted to transport a film medium through each tank and between the tanks in a proper order, wherein said squeegee mechanism is disposed between two of the processing tanks and comprises a squeegee roller in contact with and rotated opposite to the direction of movement of the film medium, said squeegee mechanism being held by its own weight in frictional contact with and driven by a transport roller whose contact point with the film is located above the liquid level of the tank from which the film is being transported.
Claim 2
Dependent Claim
114 words
A film squeegee mechanism for an automatic film developing apparatus including a plurality of processing tanks and a plurality of suitably disposed transport rollers adapted to transport a film medium through each tank and between the tanks in a proper order, wherein said squeegee mechanism is disposed between two of the processing tanks and comprises a squeegee roller in contact with and rotated opposite to the direction of movement of the film medium, said squeegee mechanism being held by its own weight in frictional contact with and driven by a transport roller whose contact point with the film is located above the liquid level of the tank from which the film is being transported.
Claim 3
Dependent Claim
45 words
The film squeegee mechanism of claim 1, further comprising a backing roller disposed on the opposite side of the film medium and the squeegee roller, said backing roller in contact with the film medium and cooperating with the squeegee roller to squeegee the film medium.
Claim 4
Dependent Claim
36 words
The film squeegee mechanism of claim 1 wherein the diameter of the squeegee roller is between 1/4 and 3/4 of the diameter of the transport roller with which it is in contact and which drives it.
Claim 5
Dependent Claim
33 words
The film squeegee mechanism of claim 1 wherein the diameter of the squeegee roller is 1/2 of the diameter of the transport roller with which it is in contact and which drives it.
References Cited (Backward Citations)
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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) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |