Patent US3705544A successfully refreshed from Google Patents.
US3705544A
Expired / Lapsed
US
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Method of processing photographic material
Assignee: Ontario Development Corp
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Filing: 1971-11-05
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Granted: 1972-12-12
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Expires: 1991-11-05
Abstract
Abstract A method of processing photographic material of the sheet or roll type including the steps of mounting the photographic material arcuately in a cylindrical carrier which is horizontally disposed with respect to the axis of arcuation, introducing a predetermined quantity of processing liquid into the lower portion of the cylindrical carrier, rotating the carrier abouts its longitudinal axis, and simultaneously oscillating the carrier (a) in a non-horizontal plane passing through its longitudinal axis, and (b) about a fulcrum centrally located on the longitudinal axis, to produce a continuous wave form in the liquid traveling back and forth along the carrier.
Inventors
- 👤 Simon Ratowsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:32
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/02; G03D3/04; G03D13/00; G03D13/02; G03D13/04; G03D13/046
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
180 words
A method of processing photographic material of the sheet or roll type, comprising the steps of: mounting the photographic material arcuately, emulsion side facing inwardly, in a cylindrical carrier closable at each end; closing the carrier and disposing the carrier and the material substantially horizontal with respect to the longitudinal axis of the carrier and the axis of arcuation of the material; introducing a predetermined quantity of processing liquid into the lower portion of the horizontally disposed carrier whereby the emulsion side of the photographic material is contacted by the liquid on rotation of the carrier about its longitudinal axis; rotating the carrier about its longitudinal axis, and simultaneously oscillating the carrier (a) in a non-horizontal plane passing through said longitudinal axis, and (b) about a fulcrum centrally located on said longitudinal axis with respect to the ends of the cylinder and fixed in said plane, to produce a continuous wave form in the liquid travelling back and forth along the carrier parallel to said longitudinal axis; and after a predetermined time interval, removing the processing liquid from the carrier.
Claim 2
Independent Claim
180 words
A method of processing photographic material of the sheet or roll type, comprising the steps of: mounting the photographic material arcuately, emulsion side facing inwardly, in a cylindrical carrier closable at each end; closing the carrier and disposing the carrier and the material substantially horizontal with respect to the longitudinal axis of the carrier and the axis of arcuation of the material; introducing a predetermined quantity of processing liquid into the lower portion of the horizontally disposed carrier whereby the emulsion side of the photographic material is contacted by the liquid on rotation of the carrier about its longitudinal axis; rotating the carrier about its longitudinal axis, and simultaneously oscillating the carrier (a) in a non-horizontal plane passing through said longitudinal axis, and (b) about a fulcrum centrally located on said longitudinal axis with respect to the ends of the cylinder and fixed in said plane, to produce a continuous wave form in the liquid travelling back and forth along the carrier parallel to said longitudinal axis; and after a predetermined time interval, removing the processing liquid from the carrier.
Claim 3
Dependent Claim
31 words
A method as claimed in claim 1 including the step of flowing water through the rotating and oscillating carrier to remove the processing liquid therefrom and to rinse the photographic material.
Claim 4
Dependent Claim
31 words
A method as claimed in claim 1 in which the carrier is oscillated at a frequency to Produce said wave form travelling back and forth substantially the length of the carrier.
Claim 5
Dependent Claim
44 words
A method as claimed in claim 3 including the additional step of flowing water through the carrier to rinse the photographic material, the carrier being oscillated at a frequency to produce said wave form travelling back and forth substantially the length of the carrier.
Claim 6
Dependent Claim
27 words
A method as claimed in claim 1 in which the material is mounted arcuately within a cylindrical means and the cylindrical means is charged into the carrier.
Claim 7
Dependent Claim
19 words
A method as claimed in claim 1 including the step of externally water cooling the carrier during oscillation thereof.
Claim 8
Dependent Claim
41 words
A method as claimed in claim 1 wherein the amplitude of oscillation at each end of the carrier is approximately one eighty-eighth the length of the carrier and the speed of rotation of the carrier is approximately 445 inches per minute.
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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |