Patent US1407946A successfully refreshed from Google Patents.
US3608465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mat film product and processing apparatus and method therefor
Assignee: Mark Systems Inc
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Filing: 1968-09-17
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Granted: 1971-09-28
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Expires: 1988-09-17
Abstract
Abstract A mat film product of the Bimat type wherein the product, after it has been presoaked or imbibed, is provided with a protective cover film on the emulsion side thereof. Apparatus for utilizing the imbibed product in the processing of photographic film includes structure permitting the removal of the cover film from the product immediately before it engages the photographic film to be processed yet allows the same cover film to be again applied to the product after the film processing step has been completed. The method of handling the product includes applying the cover film after imbibing the product, removing the cover film before processing the photographic film, and applying the cover film to the product after the film processing step.
Inventors
- 👤 Franklin K Ching
- 👤 Harry N Dieffenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:41
CPC Classifications
G; G03; G03D; G03D9/00; G03C; G03C8/00; G03C8/42; G03C8/52
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
A method of utilizing a mat film product of the Bimat type for processing a photographic negative film with the product having a protective film covering the emulsion side thereof comprising: moving the product along a predetermined path; removing the cover film from the emulsion side of the product as it moves along said path; moving the photographic negative film into engagement with said product after the cover film has been removed therefrom, whereby the photographic negative film will be processed by said product; separating the product from said photographic negative film after the latter has been processed; and applying said cover film to the emulsion side of the product after the latter has been separated from said photographic negative film.
Claim 2
Dependent Claim
55 words
A method as set forth in claim 2, wherein the step of moving the photographic negative film into engagement with the product includes winding the product and the negative film onto a roll and winding the cover film onto said roll after the cover film has been removed from the emulsion side of the product.
Claim 3
Dependent Claim
63 words
A method as set forth in claim 3, wherein said step of separating the product from the negative film includes unwinding the product, the negative film and the cover film from the roll, said step of applying the cover film including winding the product and the cover film on a second roll with the cover film on the emulsion side of the product.
Claim 4
Independent Claim
177 words
An apparatus for processing a photographic negative film using a Bimat-type film product having a protective cover film removably disposed on the emulsion side thereof comprising: a support; a spindle rotatably mounted on the support for mounting a reel containing said mat film product thereon; a first shaft spaced from said spindle and rotatably mounted on the support for mounting a reel having a photographic negative film thereon; a second shaft rotatably mounted on the support for positioning a takeup reel at a location permitting the mat film product and the photographic negative film to be wound thereon in mating relationship to each other; a third shaft mounted on said support in spaced relationship to said first spindle for receiving a reel adapted to reel in the cover film removed from the mat film product as the latter moves to said takeup reel; means coupled with one of said shafts for rotating the same; and means coupled with the other of said shafts for rotating the same as a function of the rotation of said one shaft.
Claim 5
Dependent Claim
35 words
An apparatus as set forth in claim 5, wherein said means coupled with said one shaft comprises a motor, said means coupled with the other shafts including a belt and pulley assembly interconnecting said shafts.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |