US4479997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge facsimile recording material
Assignee: Exxon Mobil Corp
•
Filing: 1982-07-06
•
Granted: 1984-10-30
•
Expires: 2002-07-06
Abstract
Abstract A multilayer electric discharge recording material comprising an electrically anisotropic support layer disposed on one surface of a conductive layer and a transfer layer disposed on the other surface of the conductive layer. The transfer layer comprises a material that has a melting point between about 25 DEG and 150 DEG C. and that is capable of melting and adhering to a receiving medium such that a desired pattern or image can be formed and recorded on the receiving sheet.
Inventors
- 👤 David C. Masterson
- 👤 Warren G. Van Dorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:17
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/3825; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24843; Y10T428/24893; Y10T428/24909; Y10T428/24934; Y10T428/24942; Y10T428/25; Y10T428/256; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/266; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2822; Y10T428/31; Y10T428/31504; Y10T428/31678; Y10T428/31801
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
156 words
An electric discharge transfer material comprising: (a) an electrically anisotropic support layer having electroconductive particles dispersed in a resin matrix and having a volume resistance of at least 10 7 ohm-cm and a surface resistance between about 10 5 and about 10 16 ohms per square; (b) a conductive layer having first and second surfaces having a surface resistance of not more than 10 4 ohms per square and a volume resistivity of not more than 10 2 ohm-cm, wherein said support layer is disposed on said first surface of said conductive layer; and (c) a transfer layer disposed on said second surface of said conductive layer comprising a hot melt resin having a melting point betweeen about 25° C. and 150° C. that is capable of melting and then separating from said second surface of said conductive layer and adhering to a receiving medium such that a desired pattern is formed on said receiving medium.
Claim 2
Dependent Claim
156 words
An electric discharge transfer material comprising: (a) an electrically anisotropic support layer having electroconductive particles dispersed in a resin matrix and having a volume resistance of at least 10 7 ohm-cm and a surface resistance between about 10 5 and about 10 16 ohms per square; (b) a conductive layer having first and second surfaces having a surface resistance of not more than 10 4 ohms per square and a volume resistivity of not more than 10 2 ohm-cm, wherein said support layer is disposed on said first surface of said conductive layer; and (c) a transfer layer disposed on said second surface of said conductive layer comprising a hot melt resin having a melting point betweeen about 25° C. and 150° C. that is capable of melting and then separating from said second surface of said conductive layer and adhering to a receiving medium such that a desired pattern is formed on said receiving medium.
Claim 3
Dependent Claim
20 words
The electric discharge transfer material of claim 1 wherein said electroconductive particles of said support layer are carbon black particles.
Claim 4
Dependent Claim
40 words
The electric discharge transfer material of claim 1 wherein said electroconductive particles of said support layer are graphite particles, said graphite particles being present in an amount and particle size sufficient to impart electrical anisotropic properties to said support layer.
Claim 5
Dependent Claim
20 words
The electric discharge transfer material of claim 3, wherein said support layer has a thickness between 3 and 100 microns.
Claim 6
Dependent Claim
30 words
The electric discharge transfer material of claim 4 wherein said support layer comprises between 5 to 65% by weight graphite particles having a particle size between 0.1 and 20 microns.
Claim 7
Dependent Claim
19 words
The electric discharge transfer material of claim 1, wherein said electroconductive particles of said support layer are metal powders.
Claim 8
Dependent Claim
13 words
The electric discharge transfer material of claim 6 wherein said metal is copper.
Claim 9
Dependent Claim
46 words
The electric discharge transfer material of claims 1, 2, 3 or 6, wherein said conductive layer comprises: (1) a thermoplastic or thermosetting resin, and (2) a particulate conductivity-imparting agent dispersed in said resin, the average particle diameter of said conductivity-imparting agent being at most 10 microns.
Claim 10
Dependent Claim
18 words
The electric discharge transfer material of claim 8, wherein said conductivity-imparting agent is graphite or carbon black particles.
Claim 11
Dependent Claim
20 words
The electric discharge transfer material of claim 9, wherein the thickness of said conductive layer is at least 3 microns.
Claim 12
Dependent Claim
21 words
The electric discharge transfer material of claim 1, wherein said conductive layer is a vacuum-deposited metal layer or a metal foil.
Claim 13
Dependent Claim
16 words
The electric discharge transfer material of claim 8, wherein said transfer layer is a hard wax.
Claim 14
Dependent Claim
27 words
The electric discharge transfer material of claim 12 wherein said hard wax is an animal wax, insect wax, mineral wax, petroleum wax, vegetable wax or synthetic wax.
Claim 15
Dependent Claim
20 words
The electric discharge transfer material of claim 13, wherein said hard wax contains from 10 to 22% by weight pigment.
Claim 16
Dependent Claim
16 words
The electric discharge transfer material of claim 14 wherein said hard wax is a synthetic wax.
Claim 17
Dependent Claim
14 words
The electric discharge transfer material of claim 14 wherein said pigment is carbon black.
Claim 18
Dependent Claim
18 words
The electric discharge transfer material of claim 13, wherein said transfer layer is about 0.1 mil in thickness.
References Cited (Backward Citations)
US3373090A
Cited
US4123578A
Cited
US4139675A
Cited
US4163075A
Cited
US4308314A
Cited
US4358474A
Cited
US4322469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |