Patent US4400457A successfully refreshed from Google Patents.
US4400457A
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US
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Dual layer record element and method
Assignee: Individual
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Filing: 1981-11-19
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Granted: 1983-08-23
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Expires: 2001-11-19
Abstract
Abstract A method of making a dual layer record element for photographically and magnetically recording information respectively on opposite faces thereof and product.
Inventors
- 👤 Reynold B. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:03
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/12; G03C5/14; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10S430/00; Y10S430/136
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
88 words
A record element comprising a maximum of two layers of matter, one layer being formed from a mixture of magnetic and resin materials to provide a self-supporting layer, and a second layer forming a coating of photoresponsive chemical material applied to one side of said one layer, said mixture including sufficient magnetic material to cause said one layer to be sufficiently opaque to prevent exposure of said coating to light passing through said layer so as to permit said element to record information thereon both photographically and magnetically.
Claim 2
Dependent Claim
88 words
A record element comprising a maximum of two layers of matter, one layer being formed from a mixture of magnetic and resin materials to provide a self-supporting layer, and a second layer forming a coating of photoresponsive chemical material applied to one side of said one layer, said mixture including sufficient magnetic material to cause said one layer to be sufficiently opaque to prevent exposure of said coating to light passing through said layer so as to permit said element to record information thereon both photographically and magnetically.
Claim 3
Independent Claim
74 words
A method of forming an elongate web of material for magnetically and photographically recording information thereon respectively on opposite faces thereof comprising the steps of casting a mixture of resin and sufficient magnetic material to form a self-supporting web thereof opaque to visible light, and in darkness passing one face of said web across and in contact with the surface of a body of photoresponsive chemical material to coat one side of said web.
Claim 4
Independent Claim
74 words
A method of forming an elongate web of material for magnetically and photographically recording information thereon respectively on opposite faces thereof comprising the steps of casting a mixture of resin and sufficient magnetic material to form a self-supporting web thereof opaque to visible light, and in darkness passing one face of said web across and in contact with the surface of a body of photoresponsive chemical material to coat one side of said web.
Claim 5
Independent Claim
140 words
A method of forming an elongate web of material for magnetically and photographically recording information thereon respectively on opposite faces thereof comprising the steps of forming a fluid body of resin and magnetic material, rotating a smooth cylindrical surface to pass into and out of said body in a manner applying a sufficient amount of material from said body to said surface to form a self-supporting web thereof, peeling the applied material from said surface to form said web thereof, and passing one face of said web across the surface of and in contact with a body of photoresponsive material to coat one side of said web therewith, said fluid body having sufficient magnetic material therein to cause said web to be sufficiently opaque to preclude exposure of the coated side of said web to light passing through said web.
Claim 6
Independent Claim
140 words
A method of forming an elongate web of material for magnetically and photographically recording information thereon respectively on opposite faces thereof comprising the steps of forming a fluid body of resin and magnetic material, rotating a smooth cylindrical surface to pass into and out of said body in a manner applying a sufficient amount of material from said body to said surface to form a self-supporting web thereof, peeling the applied material from said surface to form said web thereof, and passing one face of said web across the surface of and in contact with a body of photoresponsive material to coat one side of said web therewith, said fluid body having sufficient magnetic material therein to cause said web to be sufficiently opaque to preclude exposure of the coated side of said web to light passing through said web.
Claim 7
Independent Claim
95 words
A method of forming a length of elongate record material having a maximum of two layers starting with a self-supporting length of magnetic material formed as a maximum of one layer to provide a web thereof, said layer having sufficient magnetic material therein to cause said layer to be opaque to visible light, and including the further steps of passing one face of said web across the surface of and in contact with a body of photoresponsive material to coat one side of said web to provide a second layer carried by said one layer.
Claim 8
Independent Claim
95 words
A method of forming a length of elongate record material having a maximum of two layers starting with a self-supporting length of magnetic material formed as a maximum of one layer to provide a web thereof, said layer having sufficient magnetic material therein to cause said layer to be opaque to visible light, and including the further steps of passing one face of said web across the surface of and in contact with a body of photoresponsive material to coat one side of said web to provide a second layer carried by said one layer.
Claim 9
Dependent Claim
57 words
A roll of opaque, magnetic, photointeractive material comprising a mixture of magnetic and resin materials formed as a self-supporting layer of said mixture, and a coating of photointeractive material applied to one side thereof, said mixture including sufficient magnetic material to cause said layer to be sufficiently opaque to prevent exposure of said coating through said layer.
Claim 10
Dependent Claim
57 words
A roll of opaque, magnetic, photointeractive material comprising a mixture of magnetic and resin materials formed as a self-supporting layer of said mixture, and a coating of photointeractive material applied to one side thereof, said mixture including sufficient magnetic material to cause said layer to be sufficiently opaque to prevent exposure of said coating through said layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |