US3642471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid developing process in an electrostatographic imaging system
Assignee: Xerox Corp
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Filing: 1970-09-08
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Granted: 1972-02-15
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Expires: 1990-09-08
Abstract
Abstract An electrostatographic imaging system employing liquid development of an electrostatic latent image present on an electrophotographic sheet wherein prior to development at least the nonimage bearing surface of said sheet is contacted with an insulating liquid having a boiling point not exceeding 100* C. and subsequently both surfaces of said sheet are contacted with an insulating liquid having a boiling point greater than about 150* C. The electrophotographic sheet is dried immediately after immersion in the liquid developer.
Inventors
- 👤 Masamichi Sato
- 👤 Osamu Fukushima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:16
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/06; G03G13/10; G03G9/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
19 words
The method of claim 1 wherein both surfaces of said imaging member are contacted with said first prebathing liquid.
Claim 2
Dependent Claim
24 words
The method of claim 1 wherein said imaging member is contacted with said first prebathing liquid prior to formation of said electrostatic latent image.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein said imaging member is contacted with said first prebathing liquid after formation of said electrostatic latent image.
Claim 4
Dependent Claim
35 words
The method of claim 1 wherein following development of said electrostatic latent image, said imaging layer is contacted with a cleaning liquid comprising an insulating liquid having a boiling point less than about 100* C.
Claim 5
Dependent Claim
20 words
The method of claim 1 wherein said imaging layer comprises photoconductive pigment particles substantially uniformly dispersed in an insulating material.
Claim 6
Dependent Claim
20 words
The method of claim 6 wherein said photoconductive pigment particles comprise zinc oxide and said insulating material is a resin.
Claim 7
Dependent Claim
26 words
The method of claim 1 wherein excess first prebathing liquid is removed from the surface of said imaging member before contact with said second prebathing liquid.
Claim 8
Dependent Claim
11 words
The method of claim 1 wherein said fibrous substrate is paper.
References Cited (Backward Citations)
US3512965A
Cited
US3540885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |