ELECTROSTATIC INFORMATION RECORDING MEDIUM AND ELECTROSTATIC INFORMATION RECORDING/REPRODUCING METHOD

WIPO Patent Application WO/1991/007701

A1

An electrostatic information recording medium of the invention comprises: an electrode layer (13) and a charge-holding layer, wherein the charge-holding layer is made up of a laminate of a resin layer (11a) having a low glass transition temperature and a heat-resistant insulating layer (11b); at least an electrode layer (13) and a charge-holding layer, as well as a polymer layer provided on the charge-holding layer, the polymer layer containing a pentaflurostyrene as a monomer component and having a weight average molecular weight of 10,000 to 2,000,000; a photoconductive layer and a charge-holding layer arranged between a pair of electrodes, wherein an electrostatic latent image formed by the exposure while applying a voltage across the two electrodes or formed by the application of a voltage while effecting the exposure, is held on the surface of the charge-holding layer by peeling the charge-holding layer from the electrode; or a charge transit layer formed on the electrode, wherein information by toner is recorded on the surface of the charge transit layer and when an electrostatic charge is given to the surface, the charge given onto the toner is poured into the charge transit layer through electrically conductive material of toner to form electrostatic information corresponding to toner information on the charge transit layer maintaining excellent electrostatic information-holding characteristics, and wherein the electrostatic information stored in the electrostatic information recording medium remains very stable since it is stored in the charge-holding layer and, at the time of reproducing information, the potential difference between the electrode and the surface potential is measured to easily detect the potential difference, enabling the information to be easily reproduced maintaining high quality and high resolution.

UTSUMI MINORU (JP)
OBATA HIROYUKI (JP)
TAKE SEIJI (JP)
IIJIMA MASAYUKI (JP)
KAMIYAMA HIRONORI (JP)

PCT/JP1990/001496

May 30, 1991

November 16, 1990

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DAINIPPON PRINTING CO LTD (JP)

G03G5/02; G03G15/22; G11B9/08; G11B11/08; (IPC1-7): G03G5/02; G03G15/00; G03G15/22

JPS6136752A	1986-02-21
JPS58154847A	1983-09-14
JPS58136036A	1983-08-12
JPS4910703B1	1974-03-12
JPS52142841U	1977-10-29
JPS61122683A	1986-06-10
JPS4922135A	1974-02-27
JPS56113186A	1981-09-05
JPH10296255A	1998-11-10

See also references of EP 0454869A4

Uchida, Nobuhiko (Sairakudo Building 7th Floor, 18-11, Ueno 1-chom, Taito-ku Tokyo 110, JP)

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