US3317409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic electrophotography
Assignee: 3M Co
•
Filing: 1963-04-16
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Granted: 1967-05-02
•
Expires: 1983-04-16
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Kaspaul
- 👤 John W Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:10
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/102; G03G17/00; G03G17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR MAKING A REPRODUCTION WHICH COMPRISES EXPOSING TO A LIGHT IMAGE OF A COPY SHEET COMPRISING A SUBSTRATE CONSISTING OF AN ELECTRICALLY CONDUCTIVE BASE SHEET, AN INTERMEDIATE PHOTOCONDUCTIVE LAYER AND A SURFACE LAYER OVERLAYING SAID PHOTOCONDUCTIVE LAYER CONSISTING ESSENTIALLY OF A LIGHT-TRANSMISSIVE METALLIC FILM HAVING ABOUT 40 TO 70 PERCENT OPTICAL TRANSMISSIVITY, TO CREATE A LATENT IMAGE IN THE PHOTOCONDUCTIVE LAYER OF THE SAID COPY SHEET, WETTING THE SURFACE OF THE COPY SHEET WITH AN AQUEOUS ELECTROLYTE SOLUTION, AND CREATING A DIRECT CURRENT ELECTRICAL POTENTIAL BETWEEN THE ELECTROLYTE AS THE CATHODE AND THE CONDUCTIVE BASE LAYER OF THE COPY SHEET
Claim 2
Dependent Claim
102 words
A PROCESS FOR MAKING A REPRODUCTION WHICH COMPRISES EXPOSING TO A LIGHT IMAGE OF A COPY SHEET COMPRISING A SUBSTRATE CONSISTING OF AN ELECTRICALLY CONDUCTIVE BASE SHEET, AN INTERMEDIATE PHOTOCONDUCTIVE LAYER AND A SURFACE LAYER OVERLAYING SAID PHOTOCONDUCTIVE LAYER CONSISTING ESSENTIALLY OF A LIGHT-TRANSMISSIVE METALLIC FILM HAVING ABOUT 40 TO 70 PERCENT OPTICAL TRANSMISSIVITY, TO CREATE A LATENT IMAGE IN THE PHOTOCONDUCTIVE LAYER OF THE SAID COPY SHEET, WETTING THE SURFACE OF THE COPY SHEET WITH AN AQUEOUS ELECTROLYTE SOLUTION, AND CREATING A DIRECT CURRENT ELECTRICAL POTENTIAL BETWEEN THE ELECTROLYTE AS THE CATHODE AND THE CONDUCTIVE BASE LAYER OF THE COPY SHEET
References Cited (Backward Citations)
US3127333A
Cited
US2912592A
Cited
US3010883A
Cited
US3127331A
Cited
US3085051A
Cited
US3199086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |