US4075664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facsimile scanning device
Assignee: Yamura Shinko Seisakusho KK
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Filing: 1977-02-22
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Granted: 1978-02-21
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Expires: 1997-02-22
Abstract
Abstract A linear scanning device for a facsimile system comprises a carrier which carries a write-head and a read-head, mounted on a belt which is moved in both directions by a pulse motor. Said read-head is composed of the end of a flexible optical fibre assembly having an emission fibre for illuminating a spot on an original paper and a receiving fibre for detecting the reflected brightness of a cell in said illuminated spot. Said optical fibre assembly is supported near each end of the same by a bearing, thus said read-head can move linearly in accordance with the movement of said carrier.
Inventors
- 👤 Ren Aoki
- 👤 Mitsugu Fujiwara
- 👤 Tasaku Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:50
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/12; H04N1/126; H04N1/024; H04N1/121; H04N1/1295
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
128 words
A linear scanning system for a facsimile system comprising; a carrier movable linearly in both directions supported on a belt, a pulse motor engaged with said belt, a write-head mounted on said carrier, an optical fibre assembly composed of at least one thick emission fibre and a thin receiving fibre, a read-head composed of the end of said optical fibre assembly, a lamp positioned at the other end of said emission fibre, a photo-electric convertor positioned at the end of said receiving fibre, a bearing positioned on a center line perpendicular to the direction of travel of said carrier and said carrier supporting said optical fibre assembly near said other end, and said carrier being controlled to scan an original paper and a printing paper in both directions.
Claim 2
Dependent Claim
128 words
A linear scanning system for a facsimile system comprising; a carrier movable linearly in both directions supported on a belt, a pulse motor engaged with said belt, a write-head mounted on said carrier, an optical fibre assembly composed of at least one thick emission fibre and a thin receiving fibre, a read-head composed of the end of said optical fibre assembly, a lamp positioned at the other end of said emission fibre, a photo-electric convertor positioned at the end of said receiving fibre, a bearing positioned on a center line perpendicular to the direction of travel of said carrier and said carrier supporting said optical fibre assembly near said other end, and said carrier being controlled to scan an original paper and a printing paper in both directions.
Claim 3
Dependent Claim
16 words
The invention as defined in claim 1, wherein said write-head operates on an electrical discharge principle.
Claim 4
Dependent Claim
21 words
The invention as claimed in claim 1, wherein said optical fibre assembly has three emission fibres and a single receiving fibre.
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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |