US3577259A
Expired / Lapsed
US
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Liquid development of electrostatic latent images utilizing a tonerfree zone
Assignee: Xerox Corp
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Filing: 1968-09-19
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Granted: 1971-05-04
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Expires: 1988-09-19
Abstract
Abstract IMAGES ARE FORMED BY PROVIDING A LIQUID DEVELOPER BATH COMPRISING A CONTINUOUS INSULATING LIQUID CARRIER PHASE AND A DISCONTINUOUS PARTICULATE TONER PHASE, FORMING IN THE BATH AT LEAST ONE ZONE SUBSTANTIALLY FREE OF THE TONER PHASE, TRANSPORTING AN IMAGING MEMBER BEARING AN ELECTROSTATIC LATENT IMAGE THROUGH THE TONER-FREE ZONE AND THEREAFTER PASSING THE IMAGING MEMBER THROUGH THE REMAINDER OF THE BATH. THE IMAGING MEMBER MAY BE TRANSPORTED THROUGH A SUBSTANTIALLY TONER-FREE ZONE IN THE BATH AFTER DEVELOPMENT OF THE LATENT IMAGE TO FURTHER IMPROVE IMAGE QUALITY.
Inventors
- 👤 Masamichi Sato
- 👤 Yasuo Tamai
- 👤 Seiji Matsumoto
- 👤 Goro Akashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:13
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |