Patent US3958253A successfully refreshed from Google Patents.
US3958253A
Expired / Lapsed
US
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Device for thermally recording indicia
Assignee: Siemens AG
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Filing: 1974-08-15
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Granted: 1976-05-18
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Expires: 1994-08-15
Abstract
Abstract A device for recording indicia by directing a high intensity light source against a thin walled material having a high absorption power with respect to light and having a high conductivity in one direction, the thin walled material being positioned adjacent a recording carrier such as a thermally responsive paper, whereby the thin walled material absorbs energy transmitted by the light source and transmits the same as heat to the recording carrier.
Inventors
- 👤 Bernd Rueckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:36
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; B; B41; B41J; B41J2/00; B41J2/435; B41J2/475
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A device for recording indicia on paper having heat responsive surface characteristics comprising: a signal controlled light source of high intensity, a thin material layer, the thin material layer having localized areas of high heat conductivity in a first direction surrounded by areas of low heat conductivity perpendicular to the first direction, the thin material layer being positioned between the light source and the paper on which the indicia is to be recorded and having a relatively high absorption ability with respect to light from the light source, the thin material layer positioned immediately adjacent the paper and effective to absorb the energy transmitted by a light beam from the signal controlled light source impinging thereon, the light source impinging on the thin material layer in the first direction, the thin material layer transforming the light beam energy into heat and effective to conduct said heat to said paper.
Claim 2
Independent Claim
149 words
A device for recording indicia on paper having heat responsive surface characteristics comprising: a signal controlled light source of high intensity, a thin material layer, the thin material layer having localized areas of high heat conductivity in a first direction surrounded by areas of low heat conductivity perpendicular to the first direction, the thin material layer being positioned between the light source and the paper on which the indicia is to be recorded and having a relatively high absorption ability with respect to light from the light source, the thin material layer positioned immediately adjacent the paper and effective to absorb the energy transmitted by a light beam from the signal controlled light source impinging thereon, the light source impinging on the thin material layer in the first direction, the thin material layer transforming the light beam energy into heat and effective to conduct said heat to said paper.
Claim 3
Dependent Claim
36 words
A device according to claim 1 wherein the thin material layer consists of photographic material exposed to provide localized areas of high heat conductivity in the first direction substantially surrounded by areas of low heat conductivity.
Claim 4
Independent Claim
136 words
A device for recording indicia on paper having heat responsive surface characteristics comprising: a signal controlled light source of high intensity, a thin material layer, the thin material layer being positioned between the light source and the paper on which indicia is to be recorded and having a relatively high absorption ability with respect to light from the light source and a high directional heat conductivity, the thin material layer positioned immediately adjacent the paper and effective to absorb the energy transmitted by a light beam impinging thereon and transforming said energy into heat and conducting said heat to the paper, the thin material layer having a high conductivity in the direction of the impinging light beam from the light source and a low heat conductivity perpendicularly thereto and consisting of a waffle-shaped embossed metal foil.
Claim 5
Independent Claim
136 words
A device for recording indicia on paper having heat responsive surface characteristics comprising: a signal controlled light source of high intensity, a thin material layer, the thin material layer being positioned between the light source and the paper on which indicia is to be recorded and having a relatively high absorption ability with respect to light from the light source and a high directional heat conductivity, the thin material layer positioned immediately adjacent the paper and effective to absorb the energy transmitted by a light beam impinging thereon and transforming said energy into heat and conducting said heat to the paper, the thin material layer having a high conductivity in the direction of the impinging light beam from the light source and a low heat conductivity perpendicularly thereto and consisting of a waffle-shaped embossed metal foil.
Claim 6
Independent Claim
152 words
A device for recording indicia on paper and having heat responsive surface characteristics comprising: a signal controlled light source of high intensity, a thin material layer, the thin material layer being positioned between the light source and the paper on which indicia is to be recorded and having a relatively high absorption ability with respect to light from the light source and a high directional heat conductivity, the thin material layer positioned immediately adjacent the paper and effective to absorb the energy transmitted by a light beam impinging thereon and transforming said energy into heat and conducting said heat to the paper, the thin material layer having a high heat conductivity in the direction of the impinging light beam from the light source and a low heat conductivity perpendicularly thereto and consisting of sheet of material having low heat conductivity with a plurality of individual units of high heat conductivity imbedded therein.
Claim 7
Independent Claim
152 words
A device for recording indicia on paper and having heat responsive surface characteristics comprising: a signal controlled light source of high intensity, a thin material layer, the thin material layer being positioned between the light source and the paper on which indicia is to be recorded and having a relatively high absorption ability with respect to light from the light source and a high directional heat conductivity, the thin material layer positioned immediately adjacent the paper and effective to absorb the energy transmitted by a light beam impinging thereon and transforming said energy into heat and conducting said heat to the paper, the thin material layer having a high heat conductivity in the direction of the impinging light beam from the light source and a low heat conductivity perpendicularly thereto and consisting of sheet of material having low heat conductivity with a plurality of individual units of high heat conductivity imbedded therein.
Claim 8
Dependent Claim
18 words
A device according to claim 4 wherein the units comprise metal rod-like pieces arranged parallel to one another.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |