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INFORMATION STORAGE DEVICE

IP.com Disclosure Number: IPCOM000022751D
Original Publication Date: 1976-Jan-31
Included in the Prior Art Database: 2004-Mar-26
Document File: 2 page(s) / 240K

Publishing Venue

Xerox Disclosure Journal

Abstract

An electrical information storage member is illustrated which comprises a layer of insulating material 11 containing a layer of photosensitive particulate 12 with a conductive electrode 13 in contact with one surface of the insulator and a semi-. conductor material 14 in contact with the other surface.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

INFORMATION STORAGE DEVICE
K. Okumura

Proposed

tJ,s, Cl,
mt. Cl.

Classification
96/i

G03g

An electrical information storage member is illustrated which
comprises a layer of insulating material 11 containing a layer
of photosensitive particulate 12 with a conductive electrode
13 in contact with one surface of the insulator and a semi-.
conductor material 14 in contact with the other surface.

Information is stored in the member by trapping electrical
charges in the photosensitive material as a result of an
applied field across the insulator and actinic radiation.

The stored latent electrical image can be read out as bits of
information by the paired electrodes 17 embedded in a substrate
iSa, Where an area between the electrodes 17 contains a

portion of the trapped charge the channel conductivity of the
semiconductor 14 is enhanced. A pulse source is utilized to
interrogate each electrode pair and a readout means senses
the magnitude of current flowing between pairs. A ~ is
sensed as a high current flow and a ~ a lesser current flow
through the semiconductor channel between the electrodes.

15a

Volume 1 Number 1 January 1976 33

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34 XEROX DISCLOSURE JOURNAL

Volume 1 Number 1 January 1976

[This page contains 1 picture or other non-text object]