US4412229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line recording method
Assignee: Fujinon Corp
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Filing: 1981-08-13
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Granted: 1983-10-25
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Expires: 2001-08-13
Abstract
Abstract In recording a line image on a heat mode recording medium, the intensity of the light spot is regulated in proportion to the square root of its velocity to obtain a line image of constant width.
Inventors
- 👤 Minoru Wada
- 👤 Satoshi Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:45
CPC Classifications
G; G01; G01D; G01D9/00; G01D9/42; B; B41; B41M; B41M5/00; B41M5/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A recording method for recording a line image on a heat-mode recording medium comprising the steps of moving a light spot from a light source over the surface of a heat-mode recording medium; determining the velocity of and providing a velocity signal V corresponding to the speed of the light spot on the medium; and simultaneously regulating the power output of the light source so that the intensity is substantially proportional to the square root of the value of V.
Claim 2
Dependent Claim
80 words
A recording method for recording a line image on a heat-mode recording medium comprising the steps of moving a light spot from a light source over the surface of a heat-mode recording medium; determining the velocity of and providing a velocity signal V corresponding to the speed of the light spot on the medium; and simultaneously regulating the power output of the light source so that the intensity is substantially proportional to the square root of the value of V.
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) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |