Patent US3877963A successfully refreshed from Google Patents.
US3877963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversal liquid developing using a development electrode and corona charging
Assignee: Individual
•
Filing: 1974-01-28
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Granted: 1975-04-15
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Expires: 1994-01-28
Abstract
Abstract Toner images are formed by providing an electrostatographic recording member having an imaging surface and a rear surface, forming an electrostatic latent image on the imaging surface, positioning a development electrode parallel and spaced from the imaging surface, applying corona ions to the rear surface of the recording member, the corona ions having a polarity opposite to the polarity of the electrostatic latent image, and contacting the imaging surface with toner particles to deposit at least a portion of the toner particles on the imaging surface in image configuration.
Inventors
- 👤 Masamichi Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:56
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/06; G03G13/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
10 words
THE INVENTION OF CLAIM 1 WHEREIN THE FUGITIVE VEHICLE IS
Claim 2
Dependent Claim
26 words
A method according to claim 1 including maintaining the spacing between said development electrode and said imaging surface between about 1/3 millimeter and about 3 milLimeters.
Claim 3
Dependent Claim
19 words
A method according to claim 1 wherein said toner particles have the same polarity as said electrostatic latent image.
References Cited (Backward Citations)
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US3369917A
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US3510419A
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US3729334A
Cited
US3625681A
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US3594159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |