US3395014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of printing plates by heat plus a pressure gradient
Assignee: EIDP Inc
•
Filing: 1963-06-07
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Granted: 1968-07-30
•
Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
- 👤 Cohen Abraham Bernard
- 👤 Webers Vincent Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/34; G03F7/36
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
A PROCESS FOR PREPARING A THREE-DIMENSIONAL IMAGE FROM A LAYER OF A PHOTOHARDENABLE THERMOPLASTIC STRATUM IN INTEGRAL CONTACT WITH A POROUS SUPPORT, WHICH PROCESS COMPRISES: (1) EXPOSING SAID PHOTOHARDENABLE STRATUM IMAGEWISE TO ACTINIC RADIATION, (2) MAINTAINING SAID STRATUM AT AN OPERATING TEMPERATURE INTERMEDIATE BETWEEN THE FLOW TEMPERATURES OF THE EXPOSED AND THE UNDEREXPOSED PORTIONS OF SAID STRATUM, AND (3) APPLYING A GASEOUS PRESSURE GRADIENT ACROSS THE ELEMENT TO MOVE SAID UNDEREXPOSED PORTIONS THROUGH SAID POROUS SUPPORT THEREBY PRODUCING A RELIEF IMAGE ON SAID STRATUM CORRESPONDING TO THE HARDENED IMAGEWISE EXPOSED AREA,
Claim 2
Dependent Claim
91 words
A PROCESS FOR PREPARING A THREE-DIMENSIONAL IMAGE FROM A LAYER OF A PHOTOHARDENABLE THERMOPLASTIC STRATUM IN INTEGRAL CONTACT WITH A POROUS SUPPORT, WHICH PROCESS COMPRISES: (1) EXPOSING SAID PHOTOHARDENABLE STRATUM IMAGEWISE TO ACTINIC RADIATION, (2) MAINTAINING SAID STRATUM AT AN OPERATING TEMPERATURE INTERMEDIATE BETWEEN THE FLOW TEMPERATURES OF THE EXPOSED AND THE UNDEREXPOSED PORTIONS OF SAID STRATUM, AND (3) APPLYING A GASEOUS PRESSURE GRADIENT ACROSS THE ELEMENT TO MOVE SAID UNDEREXPOSED PORTIONS THROUGH SAID POROUS SUPPORT THEREBY PRODUCING A RELIEF IMAGE ON SAID STRATUM CORRESPONDING TO THE HARDENED IMAGEWISE EXPOSED AREA,
Claim 3
Dependent Claim
91 words
A PROCESS FOR PREPARING A PRINTING ELEMENT FROM A LAYER OF POROUS MATERIAL WHICH CONTAINS WITHIN ITS OPEN SPACES A THERMOPLASTIC PHOTOHARDENABLE MATERIAL, WHICH PROCESS COMPRISES: (1) EXPOSING SAID PHOTOHARDENABLE STRATUM IMAGEWISE TO ACTINIC RADIATION, (2) HEATING SAID MATERIAL TO AN OPERATING TEMPERATURE BETWEEN THE FLOW TEMPERATURE OF THE EXPOSED AND THE UNDEREXPOSED PORTIONS OF SAID MATERIAL; AND (3) APPLYING A GASEOUS PRESSURE GRADIENT ACROSS SAID LAYER TO REMOVE SAID UNDEREXPOSED PORTIONS THEREBY PRODUCING PERMEABLE OPENSPACES WITHIN SAID LAYER IN AN IMAGE PATTERN CORRESPONDING TO THE PATTERN OF THE NONEXPOSED AREAS.
Claim 4
Dependent Claim
91 words
A PROCESS FOR PREPARING A PRINTING ELEMENT FROM A LAYER OF POROUS MATERIAL WHICH CONTAINS WITHIN ITS OPEN SPACES A THERMOPLASTIC PHOTOHARDENABLE MATERIAL, WHICH PROCESS COMPRISES: (1) EXPOSING SAID PHOTOHARDENABLE STRATUM IMAGEWISE TO ACTINIC RADIATION, (2) HEATING SAID MATERIAL TO AN OPERATING TEMPERATURE BETWEEN THE FLOW TEMPERATURE OF THE EXPOSED AND THE UNDEREXPOSED PORTIONS OF SAID MATERIAL; AND (3) APPLYING A GASEOUS PRESSURE GRADIENT ACROSS SAID LAYER TO REMOVE SAID UNDEREXPOSED PORTIONS THEREBY PRODUCING PERMEABLE OPENSPACES WITHIN SAID LAYER IN AN IMAGE PATTERN CORRESPONDING TO THE PATTERN OF THE NONEXPOSED AREAS.
Claim 5
Dependent Claim
30 words
A PROCESS AS DEFINED IN CLAIM 10 WHEREIN SAID THERMOPLASTIC MATERIAL IS A PHOTOPOLYMERIZABLE MATERIAL THE UNDEREXPOSED PORTIONS OF WHICH HAVE A FLOW TEMPERATURE BETWEEN ABOUT 40*C. AND ABOUT 260*C.
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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) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |