Frost image recording medium and method of and apparatus for forming and reading frost image

摘要

PCT No. PCT/JP90/01550 Sec. 371 Date Jul. 29, 1991 Sec. 102(e) Date Jul. 29, 1991 PCT Filed Nov. 29, 1990 PCT Pub. No. WO91/08521 PCT Pub. Date Jun. 13, 1991.An electrode 2c and a pinene polymer recording layer 2a with a molecular weight of 500 to 10000 are successively stacked on a substrate 2c, as shown in FIG. 3 . By carrying out thermal development, information electric charge that is formed on the resin surface is formed into a thermally stable frost image without decay of the information electric charge. Since no photoconductive layer is needed, when transmitted or reflected light is used to reproduce the frost image, there is no effect of the coloring of a photoconductive layer. If exposure is effected under the application of a voltage, since the depth of dimple patterns of a frost image varies in accordance with the quantity of exposure energy, tonal reproducibility is obtained. In addition, it is possible to obtain high resolution and make an original for OHP, a microfilm, a slidefilm, etc. which is of good quality and has high fidelty to the original document.