US 5,182,159 AGranted

Electrostatic recording material

AssigneeOji Paper Co., Ltd.

InventorsHiroshige Yamauchi, Takashi Ogasawara, Tomotsugu Takahashi

Life of this patent

Estimating the term…

Loading patent…

Abstract

An electrostatic recording material, capable of recording clear resist marks and colored images without generating a lead edge fog and colored image slippage, comprises an insulating support 1, an electroconductive intermediate layer 2 formed on a surface of the support, a dielectric layer 3 formed on the electroconductive intermediate layer, and a pair of electroconductive side edge layers 4, 5 formed on a record-starting side edge portion of the dielectric layer, in which side a recording operation in a transversal direction of the recording material is started, and on a record-ending side edge portion of the dielectric layer, in which side the recording operation is ended, extending along the longitudinal axis of the recording material, spaced from each other, and each having a surface resistivity of from 1.times.10.sup.4 to 5.times.10.sup.5 .OMEGA.; the electroconductive record-starting side edge layer having a surface resistivity ratio of 2:1 to 10:1 to the electroconductive record-ending side edge layer.

Claims9

Dependent claims

An electrostatic recording material comprising:

an electrical insulating support;
an electroconductive intermediate layer formed on a surface of the support;
a dielectric layer formed on the electroconductive intermediate layer;
and
a pair of electroconductive side edge layers formed on a record-starting side edge portion of the dielectric layer, in which record-starting side a recording operation in a transversal direction of the recording material is started, and on a record-ending side edge portion of the dielectric layer, in which record-ending side the recording operation is ended, extending along the longitudinal axis of the recording material, spaced from each other, and each having a surface resistivity of from 1 .times. 10.sup.4 to 5 .times. 10.sup.5 .OMEGA., and each electroconductive side edge layer comprising carbon black and a resinous binder, having a weight of 0.5 to 10 g/m.sup.2, and having a width of 0.5 to 10 mm, and
said electroconductive record-starting side edge layer having a surface resistivity ratio of 2:1 to 10:1 to said electro-conductive record-ending side edge layer.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/645,440Filed 24 Jan 1991
Priority: JP 2-1370725 Jan 1990
Granted: 26 Jan 1993
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

G03G 5/02
Recording-members for original recording by exposure, e.g. to light, to heat or to electrons; Manufacture thereof; Selection of materials…
G03G 5/10
Recording-members for original recording by exposure, e.g. to light, to heat or to electrons; Manufacture thereof; Selection of materials…
Y10S 428/913
Stock material or miscellaneous articles: material designed to be responsive to temperature, light, moisture
Y10T 428/24777
Structurally defined web or sheet [e.g., overall dimension, etc.]: edge feature