US3856692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid electrostatographic developer compositions
Assignee: Xerox Corp
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Filing: 1972-08-28
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Granted: 1974-12-24
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Expires: 1992-08-28
Abstract
Abstract An improved electrostatographic imaging process wherein the developer contains a toner release effective amount of a fatty acid ester. The addition of minor amounts of these esters to the developer or independent treatment of the imaging surface with said materials during cyclic operation of an electrostatographic imaging system facilitates developed image transfer and removal of toner residues from the photoconductive surface of the imaging member. This invention has application in electrostatographic imaging systems employing either liquid or dry modes of development. Apparatus used in this imaging system are also contemplated within the scope of this invention.
Inventors
- 👤 J Mammino
- 👤 A Amidon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:21
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/12; G03G5/00; G03G5/005; G03G9/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AN ELECTROSTATOGRAPHIC DEVELOPER COMPOSITION COMPRISING A LIQUID DISPERSION HAVING A CONDUCTIVITY IN THE RANGE OF FROM ABOUT 10**4 TO ABOUT 10**15 (OHM-CENTIMETERS)-1 COMPRISING A CARRIER LIQUID HAVING DISPERSED THEREIN FROM ABOUT 15 TO ABOUT 35 PERCENT OF FINELY DIVIDED TONER MATERIAL BASED ON THE WEIGHT OF THE DEVELOPER COMPOSITION AND FROM ABOUT 0.1 TO ABOUT 1 PERCENT OF GLYCERYL TRI-(12-HYDROXY STEARATE) BASED ON THE WEIGHT OF THE DEVELOPER COMPOSITION.
Claim 2
Dependent Claim
69 words
AN ELECTROSTATOGRAPHIC DEVELOPER COMPOSITION COMPRISING A LIQUID DISPERSION HAVING A CONDUCTIVITY IN THE RANGE OF FROM ABOUT 10**4 TO ABOUT 10**15 (OHM-CENTIMETERS)-1 COMPRISING A CARRIER LIQUID HAVING DISPERSED THEREIN FROM ABOUT 15 TO ABOUT 35 PERCENT OF FINELY DIVIDED TONER MATERIAL BASED ON THE WEIGHT OF THE DEVELOPER COMPOSITION AND FROM ABOUT 0.1 TO ABOUT 1 PERCENT OF GLYCERYL TRI-(12-HYDROXY STEARATE) BASED ON THE WEIGHT OF THE DEVELOPER COMPOSITION.
References Cited (Backward Citations)
US3079270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |