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AssigneeDai Nippon Printing Co., Ltd.
InventorsHiroyuki Obata, Minoru Utsumi, Masayuki Iijima, Masato Okabe, Hironori Kamiyama
Estimating the term…
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 photo-conductive 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.
A frost image forming method in which an information recording medium having a thermoplastic resin layer, which is disposed face-to-face with a photosensitive member having a photoconductive layer, is formed with an electrostatic latent image by exposure under the application of a voltage and then distorted by heating to form a frost image thereon and thereafter cooled to fix said frost image.
A frost image forming method in which an information recording medium having a thermoplastic resin layer formed with an electrostatic latent image is distorted by heating to form a frost image thereon and thereafter cooled to fix said frost image, characterized in that, during the thermal development for forming said frost image through distortion, an electrical conductor is disposed face-to-face with the side of said thermoplastic resin layer where said electrostatic latent image is formed and a voltage is applied between said conductor and said information recording medium.
Dependencies are inferred from the claim text.