Photocopying – Contact printing – Fluid pressure retention of carrier and receiver in exposure...
Patent
1977-04-26
1978-08-08
Griffin, Donald A.
Photocopying
Contact printing
Fluid pressure retention of carrier and receiver in exposure...
355111, 355132, G03B 2702, G03B 2710, G03B 2720
Patent
active
041053290
ABSTRACT:
A printing tank contains a body of transparent liquid within which a main printing sprocket is totally immersed. Mechanism is provided for feeding one edge of a master strip of film onto the sprocket and in a curved path around a portion of the circumference of the sprocket. A curved support is provided to support the other edge of the master strip of film in a parallel relationship. An illuminated window is positioned between the sprocket and the curved support. A space between the window and the master strip of film is filled with the transparent liquid.
In operation, the master strip of film is sprocket-registered while passing the printing aperture effected by the illuminated window. Means are also provided for transporting an unexposed strip of film in sprocket registry with the master strip of film at the aperture.
REFERENCES:
patent: 1381840 (1921-06-01), Jeapes
patent: 2552255 (1951-05-01), Capstaff
patent: 2747478 (1956-05-01), Capstaff et al.
patent: 2856829 (1958-10-01), Orlando
patent: 3488121 (1970-01-01), Dassonville
patent: 3664738 (1972-05-01), Cameron
10/1957 Journal of the SMPTE, vol. 66, pp. 607-612, Printing Motion-Picture Films Immersed in a Liquid, J. Stott et al.
Carter William D.
Mueller Martin S.
Arant Gene W.
Carter Equipment Co., Inc.
Griffin Donald A.
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