US 5,638,103 A · Method for recording and reproducing information, apparatus therefor and recording medium

Abstract

In the information recording an reproducing method and apparatus according to the present invention, picture image information is recorded as an analog quantity or a digital quantity on 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.

Claims25

Dependent claims

A recording apparatus for recording information included in an exposed light applied thereto, comprising:

(a) a first electrode layer which transmits said exposed light incident thereto;
(b) a second electrode layer facing said first electrode layer, and a power source for applying a given voltage between said first and second electrode layer;
(c) a photoconductive layer provided between said first and second electrode layers responsive to said exposed light from said first electrode layer for generating carriers in accordance with an intensity of said exposed light per unit area of said photoconductive layer and also for transporting said carriers toward said second electrode layer in response to an electric field produced by application of said given voltage to said first and second electrode layer;
and
(d) a recording layer provided between said second electrode and carrier transport layer for recording said information by charge developed by transportation of said carriers in said carrier transport layer, said recording layer transmitting said exposed light from said first electrode layer.

2 more elements

Dependencies are inferred from the claim text.

Method for recording and reproducing information, apparatus therefor and recording medium

Life of this patent

Method for recording and reproducing information, apparatus therefor and recording medium

Life of this patent

Abstract

Claims25