Patent US3884570A successfully refreshed from Google Patents.
US3884570A
Expired / Lapsed
US
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Reader for reflective background microrecords
Assignee: Personal Communications Inc
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Filing: 1973-10-23
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Granted: 1975-05-20
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Expires: 1993-10-23
Abstract
Abstract A microimage record capable of being exposed in a reader or projector to high-intensity light rays for effective enlargement without injury to the record. The record is constituted by a base film having a light-permeable pattern formed thereon defining the recorded microimage, and a light-reflective background in those areas not preempted by the pattern, whereby the record when exposed to light rays produced by a light source reflects rather than absorbs light rays striking the background, the rays otherwise passing through and thereby illuminating the image pattern. Rays reflected back by the record are returned thereto by a reflector whereby virtually all rays emanating from the source are utilized.
Inventors
- 👤 Adnan Waly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:26
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B27/00; G03B27/32; G03B27/52; G03B27/54
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
A reader for a microrecord constituted by a base of transparent film material having a layer of highly reflective material thereon forming an image background and a microimage intelligence pattern on said base defined by shaped-light permeable openings in the reflective layer, said reader comprising: A. a viewing screen, B. a light source producing light rays which are radiated toward the reflective layer on said microrecord and pass through said openings to present said intelligence pattern on said screen, the rays impinging on said reflective layer being reflected back, and C. reflective means contoured to collect and reflect said reflected-back rays and to return them toward said microrecord to cause substantially all rays emanating from said source to ultimately pass through the light-permeable openings in the microrecord whereby the light available from said source is fully exploited, said reflective means being constituted by a concave reflector whose mouth is fully covered by said microrecord.
Claim 2
Dependent Claim
154 words
A reader for a microrecord constituted by a base of transparent film material having a layer of highly reflective material thereon forming an image background and a microimage intelligence pattern on said base defined by shaped-light permeable openings in the reflective layer, said reader comprising: A. a viewing screen, B. a light source producing light rays which are radiated toward the reflective layer on said microrecord and pass through said openings to present said intelligence pattern on said screen, the rays impinging on said reflective layer being reflected back, and C. reflective means contoured to collect and reflect said reflected-back rays and to return them toward said microrecord to cause substantially all rays emanating from said source to ultimately pass through the light-permeable openings in the microrecord whereby the light available from said source is fully exploited, said reflective means being constituted by a concave reflector whose mouth is fully covered by said microrecord.
Claim 3
Dependent Claim
16 words
A reader as set forth in claim 1, wherein said microrecord base is formed of Mylar.
Claim 4
Dependent Claim
17 words
A reader as set forth in claim 1, wherein said microrecord base is formed of cellulose acetate.
Claim 5
Dependent Claim
19 words
A reader as set forth in claim 1, wherein said reflective layer on said microrecord is formed of aluminum.
Claim 6
Dependent Claim
19 words
A reader as set forth in claim 1, wherein said reflective layer on said microrecord is formed of silver.
Claim 7
Dependent Claim
22 words
A reader as set forth in claim 1, wherein said reflective layer on said microrecord is formed by a reflective metal oxide.
Claim 8
Dependent Claim
21 words
A reader as set forth in claim 1, wherein said reflective layer on said microrecord is formed by a dielectric material.
Claim 9
Dependent Claim
135 words
A reader for a microrecord capable of being brightly illuminated and comprising a base of transparent film material having a layer of highly reflective material thereon forming an image background, said layer having a reflectivity of at least about ninety-five percent, and a microimage intelligence pattern on said base in a reduction ratio of at least one hundred, said pattern being defined by shaped, light-permeable openings in the reflective layer, the area ratio of said reflective background to said light-permeable pattern being at least twenty-to-oNe, said reader including a light source disposed in a concave reflector whose mouth is fully covered by the record, whereby light returned to said reflector by the reflective layer is directed back to said openings and virtually all light from said source passes through the light-permeable openings in the record.
Claim 10
Dependent Claim
135 words
A reader for a microrecord capable of being brightly illuminated and comprising a base of transparent film material having a layer of highly reflective material thereon forming an image background, said layer having a reflectivity of at least about ninety-five percent, and a microimage intelligence pattern on said base in a reduction ratio of at least one hundred, said pattern being defined by shaped, light-permeable openings in the reflective layer, the area ratio of said reflective background to said light-permeable pattern being at least twenty-to-oNe, said reader including a light source disposed in a concave reflector whose mouth is fully covered by the record, whereby light returned to said reflector by the reflective layer is directed back to said openings and virtually all light from said source passes through the light-permeable openings in the record.
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |