Method for recording and reproducing information, apparatus ther

Photocopying – Contact printing – Light boxes

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355217, 355 77, 430 48, G03G 15044

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active

051612330

ABSTRACT:
In the information recording an reproducing method and apparatus according to the present invention, a piece of picture image information is recorded as an analog quantity or a digital quantity an information carrying medium in a planar manner at a high density, charge potential is read for outputting electric signals to correspond to the recorded picture image information and then the outputted signals are printed out by means of various display unit or output device, with high quality and high resolution as well as ease processing of the information. The information carrying medium provides a long period of storage of information and enables stored picture image information to be repeatedly reproduced with a picture quality according to need. Particularly, it is, according to the present invention, possible to read and output local potential of an information carrying medium with predetermined scanning density at a desired time, and so pictures of high quality may be output as a silver salt photograph is taken and reproduced by optically scanning the film. Thus, the present invention may be applied to a wide field including photographing, copying and printing.

REFERENCES:
patent: 2825814 (1958-03-01), Walkup
patent: 3254998 (1966-06-01), Schwertz
patent: 3322539 (1967-05-01), Redington
patent: 4207100 (1980-06-01), Kadokura et al.
patent: 4340656 (1982-07-01), Seino et al.
patent: 4345012 (1982-08-01), Hirsch et al.
patent: 4390607 (1983-06-01), Chou et al.
patent: 4409307 (1983-10-01), Lelental et al.
patent: 4628017 (1986-12-01), Tagoku
Electrophotography, R. M. Schaffert, pp. 167-177, Focal Press, 1975.
Photographic Science and Engineering, vol. 18, No. 3, May/Jun. '74, pp. 254-261.

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