US4481541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera for CRT monitor
Assignee: RADX CORP
•
Filing: 1983-02-07
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Granted: 1984-11-06
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Expires: 2003-02-07
Abstract
Abstract A camera for photographing the image on CRT monitors is disclosed that locates a magazine containing a roll of film below a vertical aperture plate and a cassette above the aperture plate to receive the exposed film so that the film exposed through the opening in the aperture plate will not sag and distort the image received from the lens due to gravity. Magnets hold a pressure plate against the aperture plate to keep the film flat and properly positioned against the aperture plate. Apparatus is provided to cut the film between the aperture plate and the cassette to allow the cassette to be removed from time to time to develop the exposed film contained therein.
Inventors
- 👤 Kostas P. Ioannidis
- 👤 David E. Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:05
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/84; H04N5/843; H04N5/846; G; G03; G03B; G03B15/00; G03B15/003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
A camera for photographing the image on a CRT monitor comprising a housing, a CRT monitor mounted in the housing, a magazine for holding a roll of film, a vertical aperture plate mounted above the magazine, a pressure plate for holding the film against the aperture, magnetic means for urging the pressure plate and the aperture plate together with sufficient force to hold the film flat against the aperture plate while allowing the film to be moved between the aperture plate and the pressure plate, a lens and shutter assembly positioned to focus the image on the CRT monitor on the film through the aperture of the aperture plate when the shutter is open, a removable cassette mounted above the film magazine and the plate to receive the exposed film, and means for cutting the film between the film advancing means and the cassette to allow the cassette to be removed and the exposed film in the cassette to be developed while another cassette is being loaded with exposed film from the magazine.
Claim 2
Dependent Claim
173 words
A camera for photographing the image on a CRT monitor comprising a housing, a CRT monitor mounted in the housing, a magazine for holding a roll of film, a vertical aperture plate mounted above the magazine, a pressure plate for holding the film against the aperture, magnetic means for urging the pressure plate and the aperture plate together with sufficient force to hold the film flat against the aperture plate while allowing the film to be moved between the aperture plate and the pressure plate, a lens and shutter assembly positioned to focus the image on the CRT monitor on the film through the aperture of the aperture plate when the shutter is open, a removable cassette mounted above the film magazine and the plate to receive the exposed film, and means for cutting the film between the film advancing means and the cassette to allow the cassette to be removed and the exposed film in the cassette to be developed while another cassette is being loaded with exposed film from the magazine.
Claim 3
Dependent Claim
18 words
The camera of claim 1 in which the pressure plate is held against the film by permanent magnets.
Claim 4
Dependent Claim
111 words
The camera of claim 1 in which the cutting means includes a knife having a blade for cutting the film, means for moving the blade laterally through the film including a bracket supporting the knife, guide members for supporting the bracket for sliding movement along the guide members to move the blade through the film, and an endless flexible member having a pin for engaging the bracket and move it with the flexible member to move the knife blade through the film and to return the bracket to its starting point, and means to move the flexible member to so move the bracket when it is desired to cut the film.
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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) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |