EP0301842B1
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EP
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Information input sheet
Assignee: Toppan Edge Inc
•
Filing: 1988-07-27
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Granted: 1995-01-11
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Expires: 2008-07-27
Abstract
No abstract record available.
Inventors
- 👤 Masafumi Moriwaki
- 👤 Shigeaki Sano
- 👤 Eiichi Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 17:55
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041; G06F3/045
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
181 words
An information input sheet comprising: a first flexible conductive sheet (1-5); a second conductive sheet (6,8) overlying the first conductive sheet; and a plurality of insulators (7) disposed between the first and second conductive sheets to define a space therebetween, the first conductive sheet being deformable, upon application of a pressure to the exposed surface thereof at the portion where the pressure is applied so as to contact the second conductive sheet, characterised in that the insulators comprise dot insulators (7) of ink material having a predetermined average width (2) printed on the surface of the first flexible conductive sheet (1-5) facing the second conductive sheet (6,8), the dot insulators are uniformly spaced apart on the surface with a predetermined average spacing (d), the dot insulators have substantially same as, or greater softness than, the softness of the first flexible conductive sheet, the thickness of the first conductive sheet is substantially the same as or greater than the average spacing (d) of adjacent dot insulators and substantially the same as or greater than the average width (c) of the dot insulators.
Claim 2
Dependent Claim
35 words
An information input sheet according to claim 1 wherein the first conductive sheet (1-5) comprises a layer (2) of flexible material, and a layer (1) of conductive material for contacting the second conductive sheet (6,8).
Claim 3
Dependent Claim
29 words
An information input sheet according to claim 2 having a third conductive layer (3) overlying the layer (2) of flexible material for electrically shielding the second conductive layer (6,8).
Claim 4
Dependent Claim
36 words
An information input sheet according to claim 3 having a print sheet (4) covering the top surface of the third conductive layer (3) and a protective sheet (5) covering the top surface of the print sheet.
Claim 5
Dependent Claim
43 words
An information input sheet according to claim 4 wherein the thicknesses of the layer (2) of flexible material and of the protective sheet (5) are in the range of 0.3 to 1.0 mm and in the range of 0.05 to 0.5 mm, respectively.
Claim 6
Dependent Claim
50 words
An information input sheet according to claim 5 wherein the Shore hardness of the layer (2) of flexible material and the protective sheet (5) is in the range of 65° to 95°, and the Shore hardness of the protective sheet is greater than that of the layer of flexible material.
Claim 7
Dependent Claim
20 words
An information input sheet according to any preceding claim wherein the second conductive sheet (6,8 comprises a resistive layer (6).
Claim 8
Dependent Claim
19 words
An information input sheet according to any preceding claim wherein the second conductive sheet (6,8) comprises a substrate (8).
Claim 9
Dependent Claim
29 words
An information input sheet according to any preceding claim wherein the average spacing (d) between adjacent insulators is substantially the same as the average width (1) of the insulators.
References Cited (Backward Citations)
No citation records indexed.
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