US3305382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive transfer sheet
Assignee: International Business Machines Corp
•
Filing: 1964-01-02
•
Granted: 1967-02-21
•
Expires: 1984-01-02
Abstract
No abstract record available.
Inventors
- 👤 Michael T Orinik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:56
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A TRANSFER ELEMENT FOR USE IN A PRESSURE SENSITIVE CARBONLESS TRANSFER PRINTING SYSTEM COMPRISING (A) A SUBSTRATE, AT LEAST ONE SURFACE OF WHICH IS A PLASTIC CELLULOSE ACETATE MATERIAL WHILE THE OTHER SURFACE HAS AN ACID CLAY DEVELOPING AGENT COATED THEREON, (B) A LAYER OF POROUS PLASTIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF ETHYL CELLULOSE AND POLYSTYRENE COATED ONTO SAID CELLULOSE ACETATE WHEREIN DROPLETS OF A SOLUTION OF AN AMINE COLOR PRECURSOR ARE DISSOLVED IN A HIGH BOILING ORGANIC SOLVENT IN THE PORES OF SAID POROUS PLASTIC MATERIAL, AND (C) UP TO 2% BY WEIGHT OF MUTUALLY COMPATIBLE NITROCELLULOSE ADDED TO THE PLASTIC MATERIAL TO CONTROL THE DEGREE OF RELEASE OF SAID POROUS PLASTIC DROPLET CONTAINING LAYER FROM SAID CELLULOSE ACETATE SURFACE.
Claim 2
Dependent Claim
123 words
A TRANSFER ELEMENT FOR USE IN A PRESSURE SENSITIVE CARBONLESS TRANSFER PRINTING SYSTEM COMPRISING (A) A SUBSTRATE, AT LEAST ONE SURFACE OF WHICH IS A PLASTIC CELLULOSE ACETATE MATERIAL WHILE THE OTHER SURFACE HAS AN ACID CLAY DEVELOPING AGENT COATED THEREON, (B) A LAYER OF POROUS PLASTIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF ETHYL CELLULOSE AND POLYSTYRENE COATED ONTO SAID CELLULOSE ACETATE WHEREIN DROPLETS OF A SOLUTION OF AN AMINE COLOR PRECURSOR ARE DISSOLVED IN A HIGH BOILING ORGANIC SOLVENT IN THE PORES OF SAID POROUS PLASTIC MATERIAL, AND (C) UP TO 2% BY WEIGHT OF MUTUALLY COMPATIBLE NITROCELLULOSE ADDED TO THE PLASTIC MATERIAL TO CONTROL THE DEGREE OF RELEASE OF SAID POROUS PLASTIC DROPLET CONTAINING LAYER FROM SAID CELLULOSE ACETATE SURFACE.
References Cited (Backward Citations)
US2508725A
Cited
US2550469A
Cited
US2800077A
Cited
US2801938A
Cited
NL95045C
Cited
US2939009A
Cited
US3055297A
Cited
US3016308A
Cited
US2983756A
Cited
US2980558A
Cited
US3034917A
Cited
US3035935A
Cited
US3037879A
Cited
US3034918A
Cited
US3020170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |