US3795530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic latent image development
Assignee: Xerox Corp
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Filing: 1971-12-07
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Granted: 1974-03-05
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Expires: 1991-12-07
Abstract
Abstract A SIMPLE ELECTROSTATOGRAPHIC IMAGING SYSTEM INCLUDING AN ELECTROSTATOGRAPHIC IMAGING SURFACE, A DONOR MEMBER HAVING A LIQUIFIABLE POLAR DEVELOPER LAYER ON SURFACE THEREOF AND DEVELOPER REPELLENT SPACER PARTICLES SANDWICHED BETWEEN THE ELECTROSTATOGRAPHIC IMAGING SURFACE AND THE LIQUIFIABLE POLAR DEVELOPER LAYER. IMAGING IS ACCOMPLISHED IN THIS SYSTEM BY FORMING AN ELECTROSTATIC LATENT IMAGE ON THE SURFACE OF THE ELECTROSTATOGRAPHIC IMAGING SURFACE, LIQUIFIYING THE LIQUIFIABLE POLAR DEVELOPER ON THE SURFACE OF THE DONOR MEMBER AND ALLOWING THE RESULTING LIQUIFIED POLAR DEVELOPER TO MIGRATE TO THE SURFACE OF THE ELECTROSTATOGRAPHIC IMAGING SURFACE IN IMAGE CONFIGURATION.
Inventors
- 👤 R Gundlach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:50
CPC Classifications
G; G03; G03G; G03G9/00; G03G13/00; G03G13/06; G03G13/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |