US4443077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film cassette and a photographing device using the same
Assignee: Olympus Corp
•
Filing: 1981-04-30
•
Granted: 1984-04-17
•
Expires: 2001-04-30
Abstract
Abstract A film cassette provided with a magnetic disc for recording data relative to a film. The magnetic disc of the film cassette makes two revolutions when one frame of the film is wound up. Data stored in the magnetic disc are read out during the first revolution of the disc, and renewed data are recorded on the disc during the second revolution.
Inventors
- 👤 Kowji Tanikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:52
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/04; G; G03; G03B; G03B17/00; G03B17/18; G03B17/24; G03B17/28; G03B17/30; G03B7/00; G03B7/08; G03B7/091; G03B7/093; G03B7/24; G03B2206/00; G03B2206/008; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/244
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
125 words
A film cassette comprising: an unexposed film chamber section containing unexposed frames of a film; a film take-up chamber section having a film take-up spool for winding up the film in said unexposed film chamber section; a bridge section connecting said unexposed film chamber section and said film take-up chamber section; and a recording medium attached to at least one of said unexposed film chamber section, said film take-up chamber section and said bridge section, and on and from which film data relative to each one-frame of photographing are recorded and reproduced thereby to update the film data for each recording; said recording medium comprising a magnetic disc rotatably mounted on said unexposed film chamber section and rotating in concert with a film winding action.
Claim 2
Dependent Claim
125 words
A film cassette comprising: an unexposed film chamber section containing unexposed frames of a film; a film take-up chamber section having a film take-up spool for winding up the film in said unexposed film chamber section; a bridge section connecting said unexposed film chamber section and said film take-up chamber section; and a recording medium attached to at least one of said unexposed film chamber section, said film take-up chamber section and said bridge section, and on and from which film data relative to each one-frame of photographing are recorded and reproduced thereby to update the film data for each recording; said recording medium comprising a magnetic disc rotatably mounted on said unexposed film chamber section and rotating in concert with a film winding action.
Claim 3
Dependent Claim
22 words
A film cassette according to claim 1, wherein said film data relative to each one frame of photographing comprises frame number data.
Claim 4
Dependent Claim
106 words
A film cassette comprising: an unexposed film chamber section containing unexposed frames of a film; a film take-up chamber section having a film take-up spool for winding up the film in said unexposed film chamber section; a bridge section connecting said unexposed film chamber section and said film take-up chamber section; and a recording medium attached to at least one of said unexposed film chamber section, said film take-up chamber section and said bridge section, and storing data relative to the film; said recording medium comprising a magnetic disc rotatably mounted on said unexposed film chamber section and rotating in concert with a film winding action.
Claim 5
Dependent Claim
106 words
A film cassette comprising: an unexposed film chamber section containing unexposed frames of a film; a film take-up chamber section having a film take-up spool for winding up the film in said unexposed film chamber section; a bridge section connecting said unexposed film chamber section and said film take-up chamber section; and a recording medium attached to at least one of said unexposed film chamber section, said film take-up chamber section and said bridge section, and storing data relative to the film; said recording medium comprising a magnetic disc rotatably mounted on said unexposed film chamber section and rotating in concert with a film winding action.
Claim 6
Dependent Claim
19 words
A film cassette according to claim 3, wherein said stored data relative to the film comprises frame number data.
References Cited (Backward Citations)
US3439598A
Cited
US3592535A
Cited
US3593635A
Cited
JPS50113225A
Cited
JPS518928A
Cited
US4141629A
Cited
US4173401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |