US3288602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic plate and method
Assignee: Xerox Corp
•
Filing: 1962-04-04
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Granted: 1966-11-29
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Expires: 1982-04-04
Abstract
No abstract record available.
Inventors
- 👤 Snelling Christopher
- 👤 Robert W Gundlach
- 👤 George R Mott
- 👤 William D Hope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:46
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/10; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/102
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
113 words
A ZEROGRAPHIC SENSITIZING PROCESS COMPRISING APPLYING A POETENTIAL ACROSS TWO DIELECTRICALLY SEPARATED CONDUCTIVE MEMBERS ONE OF WHICH IS A FINE CONDUCTIVE SCREEN, SAID SCREEN BEING CONTIGUOUS WITH A PHOTOCONDUCTIVE LAYER SO AS TO SET UP ELECTRIC FIELDS THROUGH SAID PHOTOCONDUCTIVE LAYER, SAID TWO DIELECTRICALLY SEPARATED CONDUCTIVE MEMBERS LYING ON ONE SIDE OF A SURFACE OF SAID PHOTOCONDUCTIVE LAYER, WITH SAID PHOTOCONDUCTIVE LAYER, WHILE UNIFORMLY CONTACT WITH SAID PHOTOCONDUCTIVE LAYER TO ACTIVATING RADIASUBJECTING SAID PHOTOCONDUCTIVE LAYER TO ACTIVATING RADIATION, WHEREIN COMPETING ELECTRIC FIELDS ARE ESTABLISHED IN THE RADIATION STRUCK AREAS, REMOVING SAID SOURCE OF ACTIVATING RADIATION AND REMOVING SAID POTENTIAL SOURCE FROM SAID CONDUCTIVE MEMBERS WHEREBY CHARGE IS TRAPPED AT THE PHOTOCONDUCTIVE DIELECTRIC INTERFACE.
Claim 2
Dependent Claim
113 words
A ZEROGRAPHIC SENSITIZING PROCESS COMPRISING APPLYING A POETENTIAL ACROSS TWO DIELECTRICALLY SEPARATED CONDUCTIVE MEMBERS ONE OF WHICH IS A FINE CONDUCTIVE SCREEN, SAID SCREEN BEING CONTIGUOUS WITH A PHOTOCONDUCTIVE LAYER SO AS TO SET UP ELECTRIC FIELDS THROUGH SAID PHOTOCONDUCTIVE LAYER, SAID TWO DIELECTRICALLY SEPARATED CONDUCTIVE MEMBERS LYING ON ONE SIDE OF A SURFACE OF SAID PHOTOCONDUCTIVE LAYER, WITH SAID PHOTOCONDUCTIVE LAYER, WHILE UNIFORMLY CONTACT WITH SAID PHOTOCONDUCTIVE LAYER TO ACTIVATING RADIASUBJECTING SAID PHOTOCONDUCTIVE LAYER TO ACTIVATING RADIATION, WHEREIN COMPETING ELECTRIC FIELDS ARE ESTABLISHED IN THE RADIATION STRUCK AREAS, REMOVING SAID SOURCE OF ACTIVATING RADIATION AND REMOVING SAID POTENTIAL SOURCE FROM SAID CONDUCTIVE MEMBERS WHEREBY CHARGE IS TRAPPED AT THE PHOTOCONDUCTIVE DIELECTRIC INTERFACE.
Claim 3
Dependent Claim
99 words
A XEROGRAPHIC APPARATUS COMPRISING TWO CONDUCTIVE MEMBERS, A DIELECTRIC MATERIAL SEPARATING SAID TWO CONDUCTIVE MEMBERS, AT LEAST ONE OF SAID CONDUCTIVE MEMBERS BEING IN A FINE SCREEN A PHOTOCONDUCTIVE LAYER CONTIGUOUS TO SAID CONDUCTIVE SCREEN, SAID CONDUCTIVE MEMBERS AND SAID DIELECTRIC MATERIAL ALL LYING ON ONE SIDE OF A SURFACE OF SAID PHOTOCONDUCTIVE LAYER WITH AT LEAST A PORTION OF SAID DIELECTRIC LAYER BEING IN CONTACT WITH SAID PHOTOCONDUCTIVE LAYER, AND MEANS TO APPLY AN ELECTRIC POTENTIAL TO SAID SCREEN CAPABLE OF CREATING A SIGNIFICANT POTENTIAL DIFFERENCE WITHIN SAID SCREEN, WHEREBY ELECTRIC FIELDS ARE ESTABLISHED THROUGH SAID PHOTOCONDUCTIVE LAYER.
Claim 4
Dependent Claim
99 words
A XEROGRAPHIC APPARATUS COMPRISING TWO CONDUCTIVE MEMBERS, A DIELECTRIC MATERIAL SEPARATING SAID TWO CONDUCTIVE MEMBERS, AT LEAST ONE OF SAID CONDUCTIVE MEMBERS BEING IN A FINE SCREEN A PHOTOCONDUCTIVE LAYER CONTIGUOUS TO SAID CONDUCTIVE SCREEN, SAID CONDUCTIVE MEMBERS AND SAID DIELECTRIC MATERIAL ALL LYING ON ONE SIDE OF A SURFACE OF SAID PHOTOCONDUCTIVE LAYER WITH AT LEAST A PORTION OF SAID DIELECTRIC LAYER BEING IN CONTACT WITH SAID PHOTOCONDUCTIVE LAYER, AND MEANS TO APPLY AN ELECTRIC POTENTIAL TO SAID SCREEN CAPABLE OF CREATING A SIGNIFICANT POTENTIAL DIFFERENCE WITHIN SAID SCREEN, WHEREBY ELECTRIC FIELDS ARE ESTABLISHED THROUGH SAID PHOTOCONDUCTIVE LAYER.
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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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |