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US 4,067,650 AGranted
Data recording microform camera
OwnerSpence-Bateinventor
Life of this patent
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Abstract
A microform data acquisition processing and storage system in which data is fed from a computer, tape or cards to a cathode ray tube from whence an image produced on the tube is projected onto a photographic film or alternatively by means of an optical switching device an image of a document located on a document platen within the apparatus can be projected on to the same film without changing the film; the cathode ray tube is provided with a coating having a spectral peak between 500 and 600 nm so as to match the spectral peak of the image on the platen.
Claims15
A data recording microfilm apparatus comprising in combination:
- a photographic microfilm holding means,
- a camera cathode ray tube arranged to project an image through a first optical means onto a film held on said holding means, the face of said camera cathode ray tube completely coated with a tube coating having a spectral peak between 500 and 600 nm and said film being prodominently sensitive to a light source of between 500 and 600 nm,
- means for feeding data to said cathode ray tube to form said image,
- optical switching means between said first optical means and film holding means, a document recording platen illuminated by a light source, said light source producing a spectral peak of an image on said platen of between 500 and 600 nm, and a second optical means between said switching means and said platen arranged to project an image on said platen through said switching means to a film held on said means,
- whereby images for recording on the microfilm may be selected from either the camera tube or a document on the document platen without changing the film.
2 more elements
Dependencies are inferred from the claim text.