US4069487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording member and process for recording
Assignee: Canon Inc
•
Filing: 1975-12-22
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Granted: 1978-01-17
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Expires: 1995-12-22
Abstract
Abstract A recording member for recording a laser beam bearing an information by deformation of a recording layer comprises a support, a recording layer of a non-metallic material and a protecting layer which is not destroyed by the laser beam.
Inventors
- 👤 Masanao Kasai
- 👤 Youko Oikawa
- 👤 Hiroshi Ito
- 👤 Hiroshi Matsuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:19
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/14; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/252; G11B7/254; G11B7/242; G11B7/243; G11B2007/24302; G11B2007/24306; G11B2007/24308; G11B2007/2431; G11B2007/24312; G11B2007/24314; G11B2007/24318; G11B2007/2432; G11B2007/24324; G11B7/257; G11B2007/25705; G11B2007/25706; G11B2007/2571; G11B2007/25715; G11B2007/25716; G11B2007/25718; G11B7/253; G11B7/2531; G11B7/2572; G11B7/2575; G11B7/2578; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
100 words
A recording member for recording by applying a laser beam to remove a part of a recording layer by melting and/or vaporization whch comprises a support, a recording layer overlying the support, and a protecting layer overlying the recording layer, said recording layer being composed of a laminate including a sulphur compound layer and a metal layer and being about 0.01 - 1 micron in thickness, the metal layer underlying the sulphur compound layer in the direction of application of the laser beam, and said protecting layer being not substantially destroyed by the application of the laser beam for recording.
Claim 2
Dependent Claim
100 words
A recording member for recording by applying a laser beam to remove a part of a recording layer by melting and/or vaporization whch comprises a support, a recording layer overlying the support, and a protecting layer overlying the recording layer, said recording layer being composed of a laminate including a sulphur compound layer and a metal layer and being about 0.01 - 1 micron in thickness, the metal layer underlying the sulphur compound layer in the direction of application of the laser beam, and said protecting layer being not substantially destroyed by the application of the laser beam for recording.
Claim 3
Dependent Claim
21 words
A recording member according to claim 1 in which the metal layer is about 0.02 to about 0.2 micron in thickness.
Claim 4
Dependent Claim
44 words
A recording member according to claim 1 in which the sulphur compound layer is composed of a chalcogen compound consisting of sulfur and at least one member selected from Ge, In, Sn, Cu and Ag, and the protecting layer is composed of a resin.
Claim 5
Dependent Claim
97 words
A process for recording which comprises, applying a laser beam bearing an information to be recorded to remove a part of a recording layer which comprises a support, a recording layer composed of a laminate including a sulphur compound layer and a metal layer and being about 0.01 to 1 micron in thickness and overlying the support, the metal layer underlying the sulphur layer in the direction of application of the laser beam, and a protecting layer overlying the recording layer, under conditions whereby only the recording layer is deformed and the protecting layer remains substantially intact.
Claim 6
Dependent Claim
97 words
A process for recording which comprises, applying a laser beam bearing an information to be recorded to remove a part of a recording layer which comprises a support, a recording layer composed of a laminate including a sulphur compound layer and a metal layer and being about 0.01 to 1 micron in thickness and overlying the support, the metal layer underlying the sulphur layer in the direction of application of the laser beam, and a protecting layer overlying the recording layer, under conditions whereby only the recording layer is deformed and the protecting layer remains substantially intact.
References Cited (Backward Citations)
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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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |