US3285167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic printing system with controlled powder feed
Assignee: CROCKER CITIZENS NAT BANK
•
Filing: 1964-07-14
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Granted: 1966-11-15
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Expires: 1984-07-14
Abstract
No abstract record available.
Inventors
- 👤 Clyde O Childress
- 👤 Richard W Melmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:47
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; B; B41; B41M; B41M1/00; B41M1/12; B41M1/125; G03G17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN AN ELECTROSTATIC PRINTING SYSTEM OF THE TYPE WHEREIN PRINTING IS DONE USING ELECTROSCOPIC POWDER PARTICLES, THE IMPROVEMENT COMPRISING AN IMAGE FORMING ELECTRODE, SAID IMAGE FORMING ELECTRODE BEING MADE OF A SCREEN HAVING A PLURALITY OF APERTURES THERETHROUGH ARRANGED TO FORM THE PATTERN OF THE IMAGE DESIRED TO BE PRINTED, A CONDUCTIVE OPPOSITE ELECTRODE SPACED FROM SAID IMAGE FORMING ELECTRODE, A FIRST SOURCE OF POTENTIAL CONNECTED BETWEEN SAID IMAGE FORMING ELECTRODE AND SAID OPPOSITE ELECTRODE FOR ESTABLISHING AN ELECTRIC FIELD THEREBETWEEN, BRUSH MEANS FOR BRUSHING ELECTROSCOPIC POWDER PARTICLES THROUGH THE APERTURES IN SAID SCREEN, SAID BRUSH MEANS HAVING FIBERS FOR CONTACTING THE SCREEN IN THE REGION OF
Claim 2
Dependent Claim
107 words
IN AN ELECTROSTATIC PRINTING SYSTEM OF THE TYPE WHEREIN PRINTING IS DONE USING ELECTROSCOPIC POWDER PARTICLES, THE IMPROVEMENT COMPRISING AN IMAGE FORMING ELECTRODE, SAID IMAGE FORMING ELECTRODE BEING MADE OF A SCREEN HAVING A PLURALITY OF APERTURES THERETHROUGH ARRANGED TO FORM THE PATTERN OF THE IMAGE DESIRED TO BE PRINTED, A CONDUCTIVE OPPOSITE ELECTRODE SPACED FROM SAID IMAGE FORMING ELECTRODE, A FIRST SOURCE OF POTENTIAL CONNECTED BETWEEN SAID IMAGE FORMING ELECTRODE AND SAID OPPOSITE ELECTRODE FOR ESTABLISHING AN ELECTRIC FIELD THEREBETWEEN, BRUSH MEANS FOR BRUSHING ELECTROSCOPIC POWDER PARTICLES THROUGH THE APERTURES IN SAID SCREEN, SAID BRUSH MEANS HAVING FIBERS FOR CONTACTING THE SCREEN IN THE REGION OF
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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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |