US3340360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray photographic printer having positive feedback
Assignee: Gretag AG
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Filing: 1963-08-22
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Granted: 1967-09-05
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Expires: 1983-08-22
Abstract
No abstract record available.
Inventors
- 👤 Celio Tino
- 👤 Mey Hansjuerg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:09
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/30; H04N3/32; G; G03; G03B; G03B27/00; G03B27/72; G03B27/725
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A METHOD FOR REPRODUCING AN ORIGINAL, COMPRISING THE STEPS OF SCANNING THE ORIGINAL POINT BY POINT BY MEANS OF A LIGHT RAY WHICH SERVES SIMULTANEOUSLY TO ILLUMINATE AND REPRODUCE THE ORIGINAL, CONTROLLING THE INTENSITY OF THE LIGHT RAY IN DEPENDENCE UPON THE LIGHT PASSING THROUGH THE ORIGINAL BY MEANS OF A POSITIVE FEED-BACK LOOP HAVING A PHOTOELECTRICAL LIGHT MEASURING MEANS AND AN AMPLIFIER, THE TOTAL GAIN OF SAID FEED-BACK LOOP RESULTING FROM THE GAIN OF THE AMPLIFIER, THE LIGHT PRODUCING AND ASSOCIATED OPTICAL MEANS, THE PHOTOELECTRICAL LIGHT MEASURING MEANS AND THE TRANSMISSION OF THE ORIGINAL, MODIFYING SAID TOTAL GAIN ACCORDING TO A SPECIFIC TIME LAW EXTENDING OVER A PREDETERMINED NUMBER OF PICTURE SCANS, SAID TIME LAW PROVIDING FOR THE +1 VALUE OF THE TOAL GAIN TO BE REACHED IN EACH SCAN AT A DIFFERENT TRANSMISSION VALUE OF THE ORIGINAL.
Claim 2
Independent Claim
139 words
A METHOD FOR REPRODUCING AN ORIGINAL, COMPRISING THE STEPS OF SCANNING THE ORIGINAL POINT BY POINT BY MEANS OF A LIGHT RAY WHICH SERVES SIMULTANEOUSLY TO ILLUMINATE AND REPRODUCE THE ORIGINAL, CONTROLLING THE INTENSITY OF THE LIGHT RAY IN DEPENDENCE UPON THE LIGHT PASSING THROUGH THE ORIGINAL BY MEANS OF A POSITIVE FEED-BACK LOOP HAVING A PHOTOELECTRICAL LIGHT MEASURING MEANS AND AN AMPLIFIER, THE TOTAL GAIN OF SAID FEED-BACK LOOP RESULTING FROM THE GAIN OF THE AMPLIFIER, THE LIGHT PRODUCING AND ASSOCIATED OPTICAL MEANS, THE PHOTOELECTRICAL LIGHT MEASURING MEANS AND THE TRANSMISSION OF THE ORIGINAL, MODIFYING SAID TOTAL GAIN ACCORDING TO A SPECIFIC TIME LAW EXTENDING OVER A PREDETERMINED NUMBER OF PICTURE SCANS, SAID TIME LAW PROVIDING FOR THE +1 VALUE OF THE TOAL GAIN TO BE REACHED IN EACH SCAN AT A DIFFERENT TRANSMISSION VALUE OF THE ORIGINAL.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |