US3205071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for copying representations
Assignee: EMI Ltd
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Filing: 1959-01-05
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Granted: 1965-09-07
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Expires: 1979-01-05
Abstract
No abstract record available.
Inventors
- 👤 Finnis Ronald Tavenor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:40
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/02; G03C5/08; G03C5/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
A METHOD OF COPYING REPRESENTATIONS COMPRISING DIRECTING RADIATION ONTO A REPRESENTATION TO BE COPIED, TRANSMITTING SAID RADIATION FROM SAID REPRESENTATION TO PRODUCE AN IMAGE ON A FLUORESCENT SCREEN, SAID RADIATION BEING CAPABLE OF EXCITING SAID SCREEN TO LUMINESCENCE SO AS TO FORM A PATTTERN OF ACTINIC LIGHT ON SAID SCREEN CORRESPONDING TO THE REPRESENTATION TO BE COPIED, DIRECTING A DIFFERENT RADIATION ONTO SAID REPRESENTATION TO BE COPIED, TRANSMITTING SAID DIFFERENT RADIATION FROM SAID AREPRESENTATION ONTO SAID FLUORESCENT SCREEN SO AS TO PRODUCE AN IMAGE OF SAID REPRESENTATION IN SAID DIFFERENT RADIATION ON SAID SCREEN, SAID DIFFERENT RADIATION BEING CAPABLE OF REDUCING THE INTENSITY OF THE BRIGHT PARTS OF SAID PATTERN OF ACTINIC LIGHT COMPARED WITH THE DARK PARTS THEREOF SO AS TO MODIFY THE PATTERN OF ACTINIC LIGHT WHICH WOULD OTHERWISE BE PRODUCED AND EXPOSING A PHOTO-SENSITIVE SURFACE TO SAID MODIFIED PATTERN OF ACTINIC LIGHT.
Claim 2
Independent Claim
145 words
A METHOD OF COPYING REPRESENTATIONS COMPRISING DIRECTING RADIATION ONTO A REPRESENTATION TO BE COPIED, TRANSMITTING SAID RADIATION FROM SAID REPRESENTATION TO PRODUCE AN IMAGE ON A FLUORESCENT SCREEN, SAID RADIATION BEING CAPABLE OF EXCITING SAID SCREEN TO LUMINESCENCE SO AS TO FORM A PATTTERN OF ACTINIC LIGHT ON SAID SCREEN CORRESPONDING TO THE REPRESENTATION TO BE COPIED, DIRECTING A DIFFERENT RADIATION ONTO SAID REPRESENTATION TO BE COPIED, TRANSMITTING SAID DIFFERENT RADIATION FROM SAID AREPRESENTATION ONTO SAID FLUORESCENT SCREEN SO AS TO PRODUCE AN IMAGE OF SAID REPRESENTATION IN SAID DIFFERENT RADIATION ON SAID SCREEN, SAID DIFFERENT RADIATION BEING CAPABLE OF REDUCING THE INTENSITY OF THE BRIGHT PARTS OF SAID PATTERN OF ACTINIC LIGHT COMPARED WITH THE DARK PARTS THEREOF SO AS TO MODIFY THE PATTERN OF ACTINIC LIGHT WHICH WOULD OTHERWISE BE PRODUCED AND EXPOSING A PHOTO-SENSITIVE SURFACE TO SAID MODIFIED PATTERN OF ACTINIC LIGHT.
Claim 3
Dependent Claim
161 words
APPARATUS FOR COPYING REPRESENTATIONS COMPRISING MEANS FOR SUPPORTING A REPRESENTATION TO BE COPIED, A SOURCE OF RADIATION DISPOSED TO DIREC RADIATION ONTO A REPRESENTATION CARRIED BY SAID SUPPORT, A LUMINESCENT SCREEN MOUNTED TO RECEIVE AN IMAGE OF SAID REPRESENTATION IN SAID RADIATION FROM SAID REPRESENTATION, SAID RADIATION BEING CAPABLE OF EXCITING SAID SCREEN TO LUMINESCE SO THAT A PATTERN OF ACTINIC LIGHT IS SET UP ON SAID SCREEN CORRESPONDING TO THE REPRESENTATION TO BE COPIED, A DIFFERENT SOURCE OF RADIATION DISPOSED TO DIRECT RADIATION ONTO SAID REPRESENTATION CARRIED BY SAID SUPPORT, SAID LUMINESCENT SCREEN RECEIVING AN IMAGE OF SAID REPRESENTATION IN SAID DIFFERENT RADIATION FROM SAID REPRESENTATION, SAID DIFFERENT RADIATION BEING CAPABLE OF REDUCING THE INTENSITY OF BRIGHT PARTS OF SAID PATTERN OF ACTINIC LIGHT COMPARED WITH THE DARK PARTS THEREOF SO AS TO MODIFY THE PATTERN OF ACTINIC LIGHT WHICH WOULD OTHERWISE BE PRODUCED AND MEANS FOR SUPPORTING A PHOTO-SENSITIVE SURFACE FOR EXPOSURE TO SAID MODIFIED PATTERN OF ACTINIC LIGHT.
Claim 4
Dependent Claim
161 words
APPARATUS FOR COPYING REPRESENTATIONS COMPRISING MEANS FOR SUPPORTING A REPRESENTATION TO BE COPIED, A SOURCE OF RADIATION DISPOSED TO DIREC RADIATION ONTO A REPRESENTATION CARRIED BY SAID SUPPORT, A LUMINESCENT SCREEN MOUNTED TO RECEIVE AN IMAGE OF SAID REPRESENTATION IN SAID RADIATION FROM SAID REPRESENTATION, SAID RADIATION BEING CAPABLE OF EXCITING SAID SCREEN TO LUMINESCE SO THAT A PATTERN OF ACTINIC LIGHT IS SET UP ON SAID SCREEN CORRESPONDING TO THE REPRESENTATION TO BE COPIED, A DIFFERENT SOURCE OF RADIATION DISPOSED TO DIRECT RADIATION ONTO SAID REPRESENTATION CARRIED BY SAID SUPPORT, SAID LUMINESCENT SCREEN RECEIVING AN IMAGE OF SAID REPRESENTATION IN SAID DIFFERENT RADIATION FROM SAID REPRESENTATION, SAID DIFFERENT RADIATION BEING CAPABLE OF REDUCING THE INTENSITY OF BRIGHT PARTS OF SAID PATTERN OF ACTINIC LIGHT COMPARED WITH THE DARK PARTS THEREOF SO AS TO MODIFY THE PATTERN OF ACTINIC LIGHT WHICH WOULD OTHERWISE BE PRODUCED AND MEANS FOR SUPPORTING A PHOTO-SENSITIVE SURFACE FOR EXPOSURE TO SAID MODIFIED PATTERN OF ACTINIC LIGHT.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |