US3183833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing duplicating master sheets
Assignee: Block and Anderson Ltd
•
Filing: 1962-03-05
•
Granted: 1965-05-18
•
Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 Block Alfred Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:01
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/025; B41M5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
213 words
THE METHOD OF PRODUCING A MIRRORSCRIPT DUPLICATING MASTER OF LIKE SHEET FROM A SHEET BEARING AN ORIGINAL IMAGE WHICH IS ABSORPTIVE OF INFRA-RED RADATION, WHICH COMPRISES THE STEPS OF PROVIDING AN OFF-SET REPEAT OF THE ORIGINAL IMAGE IN HEAT SENSITIVE PIGMENT-CONTAINING MATERIAL ON THE SIDE OF SAID ORIGINAL SHEET OPPOSITE TO THAT CARRYING THE ORIGINAL IMAGE, PLACING A RECEPTIVE SHEET OF MATERIAL SUITABLE FOR FORMING THE BASE OF THE PRODUCED MASTER SHEET BETWEEN THE IMAGE-BEARING ORIGINAL SHEET AND A TRANSFER SHEET OF HEAT SENSITIVE TRANSFER MATERIAL OF A CHARACTER SUITABLE FOR FORMING THE DUPLICATING MASTER IMAGE, THE SIDE OF SAID ORIGINAL SHEET CARRYING SAID OFF-SET REPEAT OF THE ORIGINAL IMAGE BEING A CONTACT WITH ONE SIDE OF SAID RECEPTIVE SHEET AND THE HEAT SENSITIVE TRANSFER MATERIAL OF SAID TRANSFER SHEET BEING IN CONTACT WITH THE OPPOSITE SIDE OF SAID RECEPTIVE SHEET, MAINTAINING SAID SHEETS IN FACE-TO-FACE CONTACT WITH ONE ANOTHER WHILE SUBJECTING THEM TO INFRA-RED RADIATION OF AN AMOUNT SUFFICIENT TO CAUSE MELTING AND DISPLACEMENT OF SAID OFF-SET REPEAT IMAGE AND SAID TRANSFER MATERIAL TO THE OPPOSING SIDES OF SAID RECEPTIVE SHEET BY CONDUCTED HEAT FROM SAID ORIGINAL IMAGE UPON HEATING OF THE LATTER BY ABSORPTION OF SAID RADIATION AND THEN REMOVING SAID RECEPTIVE SHEET FOR USE AS THE REQUIRED DUPLICATING MASTER SHEET
Claim 2
Independent Claim
213 words
THE METHOD OF PRODUCING A MIRRORSCRIPT DUPLICATING MASTER OF LIKE SHEET FROM A SHEET BEARING AN ORIGINAL IMAGE WHICH IS ABSORPTIVE OF INFRA-RED RADATION, WHICH COMPRISES THE STEPS OF PROVIDING AN OFF-SET REPEAT OF THE ORIGINAL IMAGE IN HEAT SENSITIVE PIGMENT-CONTAINING MATERIAL ON THE SIDE OF SAID ORIGINAL SHEET OPPOSITE TO THAT CARRYING THE ORIGINAL IMAGE, PLACING A RECEPTIVE SHEET OF MATERIAL SUITABLE FOR FORMING THE BASE OF THE PRODUCED MASTER SHEET BETWEEN THE IMAGE-BEARING ORIGINAL SHEET AND A TRANSFER SHEET OF HEAT SENSITIVE TRANSFER MATERIAL OF A CHARACTER SUITABLE FOR FORMING THE DUPLICATING MASTER IMAGE, THE SIDE OF SAID ORIGINAL SHEET CARRYING SAID OFF-SET REPEAT OF THE ORIGINAL IMAGE BEING A CONTACT WITH ONE SIDE OF SAID RECEPTIVE SHEET AND THE HEAT SENSITIVE TRANSFER MATERIAL OF SAID TRANSFER SHEET BEING IN CONTACT WITH THE OPPOSITE SIDE OF SAID RECEPTIVE SHEET, MAINTAINING SAID SHEETS IN FACE-TO-FACE CONTACT WITH ONE ANOTHER WHILE SUBJECTING THEM TO INFRA-RED RADIATION OF AN AMOUNT SUFFICIENT TO CAUSE MELTING AND DISPLACEMENT OF SAID OFF-SET REPEAT IMAGE AND SAID TRANSFER MATERIAL TO THE OPPOSING SIDES OF SAID RECEPTIVE SHEET BY CONDUCTED HEAT FROM SAID ORIGINAL IMAGE UPON HEATING OF THE LATTER BY ABSORPTION OF SAID RADIATION AND THEN REMOVING SAID RECEPTIVE SHEET FOR USE AS THE REQUIRED DUPLICATING MASTER SHEET
References Cited (Backward Citations)
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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) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |