Title:
FROST IMAGE RECORDING MEDIUM AND METHOD AND APPARATUS FOR PREPARING AND READING FROST IMAGE
Document Type and Number:
WIPO Patent Application WO/1991/008521
Kind Code:
A1
Abstract:
A data recording medium (10) is manufactured by laminating an electrode (13) and a recording layer (11) of a pinene polymer having a molecular weight of 500 $m(k) 10,000 on a support (15). By thermal development, a thermally stable frost image can be produced without causing attenuation of data charge generated on the resin surface. Transmitted or reflected light can be accordingly used for reproduction of the frost image, without provision of a photoconductive layer coloration of which has bad influence. Since voltage impression exposure is made, the degree of uneveness of the frost image changes in accordance with the exposure value. Therefore, a tone wedge effect can be provided and high resolution can be obtained. It is thus possible to produce high-quality and high-fidelity OHP transparencies, microfilms, slide films, and so forth.
Inventors:
OBATA HIROYUKI (JP)
UTSUMI MINORU (JP)
IIJIMA MASAYUKI (JP)
OKABE MASATO (JP)
KAMIYAMA HIRONORI (JP)
UTSUMI MINORU (JP)
IIJIMA MASAYUKI (JP)
OKABE MASATO (JP)
KAMIYAMA HIRONORI (JP)
Application Number:
PCT/JP1990/001550
Publication Date:
June 13, 1991
Filing Date:
November 29, 1990
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD (JP)
International Classes:
G03G5/022; G03G16/00; H04N1/00; (IPC1-7): G03B21/132; G03G5/022; G03G16/00; G11B11/00; H04N1/04
Foreign References:
| JPS49130734A | 1974-12-14 | |||
| JPS5454034A | 1979-04-27 | |||
| JPS456784B1 | ||||
| JPS4988527A | 1974-08-23 | |||
| JPS62123467A | 1987-06-04 | |||
| JPS6183581A | 1986-04-28 |
Other References:
See also references of EP 0455824A4
Attorney, Agent or Firm:
Hirukawa, Masanobu (Sairakudo Bldg. 7th Floor, 18-11, Ueno 1-chom, Taito-ku Tokyo 110, JP)
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