Patent US3787873A successfully refreshed from Google Patents.
US3787873A
Expired / Lapsed
US
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Laser recording method and material therefor
Assignee: Fujifilm Holdings Corp
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Filing: 1971-10-12
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Granted: 1974-01-22
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Expires: 1991-10-12
Abstract
Abstract An improved recording method and recording material utilizing a laser beam is disclosed. A transparent method is recorded upon with a laser beam of comparatively little energy by providing the material with a light absorbing, deformation promoting, removable layer having a high absorption coefficient.
Inventors
- 👤 M Sato
- 👤 A Nabara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:12
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/18; B41; B41M; B41M5/00; B41M5/26; B41M5/36; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
65 words
A laser recording method which comprises: providing a light absorbing deformation promoting removable layer having a high absorption coefficient for a laser beam on a transparent main deformable base having a thermofusible property at least at the surface thereof, recording a laser beam of a power sufficient to deform said base onto said layer thereof, and reducing the absorption coefficient of said light absorbing layer.
Claim 2
Dependent Claim
64 words
A laser recording material comprising: a transparent main deformable base having a thermofusible property at least at the surface thereof, having superimposed thereon, a light absorbing deformation promotion removable layer having a high absorption coefficient for a laser beam, and recorded on to said light absorbing deformation promoting removable layer, a laser beam of a power sufficient to deform said base onto said layer.
Claim 3
Dependent Claim
35 words
The laser beam recording material as defined in claim 3 wherein saId base is polyethylene terephthalate, said thermofusible layer is polystyrene, and said light absorbing layer is a mixture of carbon black and polyvinyl acetate.
Claim 4
Dependent Claim
19 words
The laser beam recording material as defined in claim 3 wherein said light absorbing layer is Brilliant Carmin 6B.
Claim 5
Dependent Claim
31 words
The laser beam recording material as defined in claim 3 wherein said base is a polystyrene film and said light absorbing layer is a mixture of carbon black and polyvinyl acetate.
References Cited (Backward Citations)
US2664043A
Cited
US3154371A
Cited
US3266393A
Cited
US3314073A
Cited
US3475760A
Cited
US3410203A
Cited
US3689768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |