US3196012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Half-tone xerography with thermoplastic deformation of the image
Assignee: Xerox Corp
•
Filing: 1962-06-07
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Granted: 1965-07-20
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Expires: 1982-06-07
Abstract
No abstract record available.
Inventors
- 👤 Harold E Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:27
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/022; G03G13/00; G03G13/14; G03G13/18; G03G16/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE METHOD OF REPRODUCING A CONTIUOUS TONE PATTERN OF LIGHT AND SHADOW COMPRISING THE STEPS OF: (A) APPLYING AN ELECTROSTATIC TRANSFER FIELD EFFECTIVE IN A DEFINED GEOMETRIC HALFTONE FIELD PATTERN TO TRANSFER A CONTINOUS TONE PATTERN OF ELECTRIC CHARGE CONFORMING TO SAID PATTERN OF LIGHT AND SHADOW FORM THE SURFACE OF A UNIFORM PHOTOCONDUCTIVE INSULATING LAYER TO THE SURFACE OF A CONTIGOUSLY SUPPORTED LAYER OF DEFORMABLE INSULATING MATERIAL WHEREBY THE TRANSFERRED CHARGE DENSITIES ON SAID DEFORMABLE MATERIAL ARE CORRELATED PATTERN-WISE TO SAID APPLIED HALF-TONE TRANSFER FIELD,
Claim 2
Independent Claim
86 words
THE METHOD OF REPRODUCING A CONTIUOUS TONE PATTERN OF LIGHT AND SHADOW COMPRISING THE STEPS OF: (A) APPLYING AN ELECTROSTATIC TRANSFER FIELD EFFECTIVE IN A DEFINED GEOMETRIC HALFTONE FIELD PATTERN TO TRANSFER A CONTINOUS TONE PATTERN OF ELECTRIC CHARGE CONFORMING TO SAID PATTERN OF LIGHT AND SHADOW FORM THE SURFACE OF A UNIFORM PHOTOCONDUCTIVE INSULATING LAYER TO THE SURFACE OF A CONTIGOUSLY SUPPORTED LAYER OF DEFORMABLE INSULATING MATERIAL WHEREBY THE TRANSFERRED CHARGE DENSITIES ON SAID DEFORMABLE MATERIAL ARE CORRELATED PATTERN-WISE TO SAID APPLIED HALF-TONE TRANSFER FIELD,
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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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |