US3230875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermographic duplication
Assignee: Columbia Ribbon and Carbon Manufacturing Co Inc
•
Filing: 1963-01-16
•
Granted: 1966-01-25
•
Expires: 1983-01-16
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:29
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38235; B41M5/025; B41M5/0253; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10S428/92; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
THE METHOD OF THERMOGRAPHICALLY PLACING SHARP AND CLEAR DUPLICATING IMAGES ON A MASTER SHEET BY MEANS OF ORIGINAL INFRARED RADIATION-ABSORBING IMAGES AND A TRANSFER SHEET WHICH COMPRISES SUPERPOSING SAID ORIGINAL IMAGES AND SAID MASTER SHEET WITH A TRANSLUCENT TRANSFER SHEET HAVING A TRANSLUCENT FOUNDATION HAVING AT LEAST ONE NEUTRAL PLASTIC OUTER SURFACE AND HAVING A THICKNESS OF NO MORE THAN ABOUT 2 MILS CARRYING ON THE PLASTIC SURFACE THEREOF A SUBSTANTIALLY COLORLESS TANSFER LAYER HAVING A THICKNESS OF NO MORE THAN ABOUT 1 MIL AND COMPRISING A SUBSTANTIALLY COLORLESS, SOLID, UNDISSOLVED BIS (P-DIALKYLAMINOARYL) METHANE COMPOUND WHICH DEVELOPS AN INTENSE DYE COLOR WHEN CONTACTED WITH AN ACID MEDIUM, AND AN AMOUNT OF AN ALKALINE STABILIZING AGENT TO PREVENT DEVELOPMENT OF THE METHANE COMPOUND BY THE ATMOSPHERE SAID TRANSFER LAYER BEING IN SURFACE CONTACT WITH SAID MASTER SHEET, AND EXPOSING SAID SUPERPOSED SHEETS TO A LIGHT SOURCE RICH IN INFRARED RADIATIONFOR A PERIOD OF TIME SUFFICIENT TO HEAT SAID ORIGINAL IMAGES AND CAUSE THE TRANSFER LAYER TO MELT AND TRANSFER TO THE MASTER SHEET IN AREAS CORRESPONDING TO THE LOCATION OF THE ORIGINAL IMAGES.
Claim 2
Independent Claim
182 words
THE METHOD OF THERMOGRAPHICALLY PLACING SHARP AND CLEAR DUPLICATING IMAGES ON A MASTER SHEET BY MEANS OF ORIGINAL INFRARED RADIATION-ABSORBING IMAGES AND A TRANSFER SHEET WHICH COMPRISES SUPERPOSING SAID ORIGINAL IMAGES AND SAID MASTER SHEET WITH A TRANSLUCENT TRANSFER SHEET HAVING A TRANSLUCENT FOUNDATION HAVING AT LEAST ONE NEUTRAL PLASTIC OUTER SURFACE AND HAVING A THICKNESS OF NO MORE THAN ABOUT 2 MILS CARRYING ON THE PLASTIC SURFACE THEREOF A SUBSTANTIALLY COLORLESS TANSFER LAYER HAVING A THICKNESS OF NO MORE THAN ABOUT 1 MIL AND COMPRISING A SUBSTANTIALLY COLORLESS, SOLID, UNDISSOLVED BIS (P-DIALKYLAMINOARYL) METHANE COMPOUND WHICH DEVELOPS AN INTENSE DYE COLOR WHEN CONTACTED WITH AN ACID MEDIUM, AND AN AMOUNT OF AN ALKALINE STABILIZING AGENT TO PREVENT DEVELOPMENT OF THE METHANE COMPOUND BY THE ATMOSPHERE SAID TRANSFER LAYER BEING IN SURFACE CONTACT WITH SAID MASTER SHEET, AND EXPOSING SAID SUPERPOSED SHEETS TO A LIGHT SOURCE RICH IN INFRARED RADIATIONFOR A PERIOD OF TIME SUFFICIENT TO HEAT SAID ORIGINAL IMAGES AND CAUSE THE TRANSFER LAYER TO MELT AND TRANSFER TO THE MASTER SHEET IN AREAS CORRESPONDING TO THE LOCATION OF THE ORIGINAL IMAGES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |