US3229574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of photographic printing of color records
Assignee: Ilford Imaging UK Ltd
•
Filing: 1965-03-31
•
Granted: 1966-01-18
•
Expires: 1985-03-31
Abstract
No abstract record available.
Inventors
- 👤 Denis M Neale
- 👤 Albert H Ninnim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:38
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/73; G03B27/735
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
A METHOD FOR THE PRODUCTION, FROM A COLOR TRANSPARENCY, OF A MULTICOLOURED PHOTOGRAPHIC PRINT ON PRINT MATERIAL HAVING COMPONENTS SELECTIVELY SENSITIVE TO THREE SPECTRAL BANDS UTILIZING PRINTING LIGHT CONTAINING EACH OF SAID THREE SPECTRAL BANDS, COMPRISING FOR EACH SPECTRAL BAND SEPARATELY THE STEPS OF: DIRECTING LIGHT CONTAINING THE THREE-SPECTRAL BANDS FROM A STABLE REFERENCE LAMP TO A FIRST COLOUR-SELECTIVE FILTER DESIGNED TO PASS LIGHT IN THE SEPARATE BAND ONTO LIGHT SENSITIVE MEANS TO GENERATE A FIRST ELECTRICAL SIGNAL FOR SAID BAND HAVING A VALUE CORRESPONDING TO THE LIGHT IN THE SEPARATE SPECTRAL BAND; ADJUSTING SAID ELECTRICAL SIGNAL FROM THE LIGHT SENSITIVE MEANS IN ORDER TO BRING SAID ELECTRICAL SIGNAL TO A PRESELECTED VALUE, THEREAFTER MAINTAINING THE SAID ADJUSTED SANSITIVITY CONSTANT; INTERRUPTING THE LIGHT DIRECTED FROM SAID STABLE REFERENCE LAMP; PASSING PRINTING LIGHT THROUGH THE COLOUR TRANSPARENCY ONTO SAID PRINTING MATERIAL TO EXPOSE SAME AND PASSING PRINTING LIGHT ALSO THROUGH A FILTER TRANSMITTING LIGHT IN SUBSTANTIALLY THE SAME SPECTRAL BAND AS SAID COLOUR-SELECTIVE FILTER ONTO SAID LIGHT SENSITIVE MEANS TO GENERATE A SECOND ELECTRICAL SIGNAL; AND INTERRUPTING THE PASSAGE TO THE PRINTING MATERIAL AND TO THE LIGHT SENSITIVE MEANS OF PRINTING MATERIAL AND TO THE LIGHT SENSITIVE TO THE VALUE OF SAID SECOND SIGNAL AS MODIFIED BY A SAID ADJUSTED SENSITIVITY.
Claim 2
Independent Claim
210 words
A METHOD FOR THE PRODUCTION, FROM A COLOR TRANSPARENCY, OF A MULTICOLOURED PHOTOGRAPHIC PRINT ON PRINT MATERIAL HAVING COMPONENTS SELECTIVELY SENSITIVE TO THREE SPECTRAL BANDS UTILIZING PRINTING LIGHT CONTAINING EACH OF SAID THREE SPECTRAL BANDS, COMPRISING FOR EACH SPECTRAL BAND SEPARATELY THE STEPS OF: DIRECTING LIGHT CONTAINING THE THREE-SPECTRAL BANDS FROM A STABLE REFERENCE LAMP TO A FIRST COLOUR-SELECTIVE FILTER DESIGNED TO PASS LIGHT IN THE SEPARATE BAND ONTO LIGHT SENSITIVE MEANS TO GENERATE A FIRST ELECTRICAL SIGNAL FOR SAID BAND HAVING A VALUE CORRESPONDING TO THE LIGHT IN THE SEPARATE SPECTRAL BAND; ADJUSTING SAID ELECTRICAL SIGNAL FROM THE LIGHT SENSITIVE MEANS IN ORDER TO BRING SAID ELECTRICAL SIGNAL TO A PRESELECTED VALUE, THEREAFTER MAINTAINING THE SAID ADJUSTED SANSITIVITY CONSTANT; INTERRUPTING THE LIGHT DIRECTED FROM SAID STABLE REFERENCE LAMP; PASSING PRINTING LIGHT THROUGH THE COLOUR TRANSPARENCY ONTO SAID PRINTING MATERIAL TO EXPOSE SAME AND PASSING PRINTING LIGHT ALSO THROUGH A FILTER TRANSMITTING LIGHT IN SUBSTANTIALLY THE SAME SPECTRAL BAND AS SAID COLOUR-SELECTIVE FILTER ONTO SAID LIGHT SENSITIVE MEANS TO GENERATE A SECOND ELECTRICAL SIGNAL; AND INTERRUPTING THE PASSAGE TO THE PRINTING MATERIAL AND TO THE LIGHT SENSITIVE MEANS OF PRINTING MATERIAL AND TO THE LIGHT SENSITIVE TO THE VALUE OF SAID SECOND SIGNAL AS MODIFIED BY A SAID ADJUSTED SENSITIVITY.
References Cited (Backward Citations)
US3090289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |