EP0507255A1
Expired / Lapsed
EP
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Electrostatic image transfer recording sheet
Assignee: AGC Inc
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Filing: 1992-03-31
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Granted: —
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Expires: 2012-03-31
Abstract
Abstract An electrostatic image transfer recording sheet which comprises a substrate having, on one side thereof, an image-forming laye made of a porous alumina hydrate and, on the other side, a porous alumina hydrate layer.
Inventors
- 👤 Katsutoshi C/O Asahi Glass Company Ltd. Misuda
- 👤 Nobuyuki C/O Asahi Glass Company Ltd. Yokota
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 21:43
CPC Classifications
G; G03; G03G; G03G7/00; G03G7/0006; G03G7/0013; G03G7/0086; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
34 words
An electrostatic image transfer recording sheet which comprises a substrate having, on one side thereof, an image-forming layer made of a porous alumina hydrate and, on the other side, a porous alumina hydrate layer.
Claim 2
Dependent Claim
29 words
The electrostatic image transfer recording sheet according to Claim 1, wherein the porous alumina hydrate layer on the opposite side to the image-forming layer side, is made of pseudo-boehmite.
Claim 3
Dependent Claim
21 words
The electrostatic image transfer recording sheet according to Claim 1, wherein the porous alumina hydrate of the image-forming layer is pseudo-boehmite.
Claim 4
Dependent Claim
33 words
The electrostatic image transfer recording sheet according to Claim 3, wherein the porous alumina hydrate of the image-forming layer is porous pseudo-boehmite having an average pore radius of from 15 to 30 Å.
Claim 5
Dependent Claim
52 words
The electrostatic image transfer recording sheet according to Claim 1, wherein the image-forming layer comprises a lower layer made of porous pseudo-boehmite having an average pore radius of from 15 to 30 Å and an upper layer made of porous pseudo-boehmite having an average pore radius of from 35 to 100 Å.
Claim 6
Dependent Claim
38 words
The electrostatic image transfer recording sheet according to Claim 5, wherein the lower layer has a surface density of from 2 to 10 g/m², and the upper layer has a surface density of from 0.5 to 3 g/m².
Claim 7
Dependent Claim
38 words
The electrostatic image transfer recording sheet according to Claim 5, wherein the lower layer has a surface density of from 4 to 10 g/m², and the upper layer has a surface density of from 0.5 to 2 g/m².
Claim 8
Dependent Claim
15 words
The electrostatic image transfer recording sheet according to Claim 1, wherein the substrate is transparent.
Claim 9
Dependent Claim
18 words
The electrostatic image transfer recording sheet according to Claim 1, wherein the substrate is made of polyethylene terephthalate.
Claim 10
Dependent Claim
21 words
A recorded product comprising an electrostatic image transfer recording sheet of Claim 1 having an electrostatic image transfer toner spreaded thereon.
References Cited (Backward Citations)
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