US3620800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning liquid developed electrostatic images by contact with vaporized cleaning fluid
Assignee: Xerox Corp
•
Filing: 1969-03-14
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Granted: 1971-11-16
•
Expires: 1989-03-14
Abstract
Abstract Images are improved by evaporating a cleaning liquid in a cleaning liquid reservoir, condensing the resulting cleaning liquid vapor, following the condensed cleaning liquid over the surface of a developed electrostatographic recording member to remove toner particles from the background areas as well as other contaminants and returning the spent liquid to the cleaning liquid reservoir.
Inventors
- 👤 Yasuo Tamai
- 👤 Satoru Honjo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:50
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0088; G03G15/00; G03G15/06; G03G15/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
56 words
A method of forming images according to claim 1 including transporting said imaged recording surface in a downwardly convex path into said cleaning zone wherein said condensed cleaning liquid formed by condensing said vapors flows on said imaged recording surface and washes away said toner particles deposited in said background areas of said imaged recording surface.
Claim 2
Dependent Claim
55 words
A method of forming images according to claim 1 including transporting said imaged recording surface into said cleaning zone in a helical path wherein said condensed cleaning liquid formed by condensing said vapors flows on said imaged recording surface and washes away said toner particles deposited in said background areas of said imaged recording surface.
Claim 3
Dependent Claim
37 words
A method of forming images according to claim 1 including drying the washed imaged recording surface as it is transported out of said cleaning zone to remove excess cleaning liquid adhering to said washed imaged recording surface.
Claim 4
Dependent Claim
27 words
A method of forming images according to claim 1 wherein said condensed cleaning liquid formed on said imaged recording surface is initially substantially uncontaminated with toner particles.
Claim 5
Dependent Claim
128 words
A method of forming images according to claim 1 including the subsequent steps of forming a new electrostatic latent image on said recording surface, developing said new electrostatic latent image with said liquid developer to form an imaged recording surface having image areas and background areas, transporting said imaged recording surface into said cleaning zone, reheating the collected condensed cleaning liquid contaminated with toner particles washed away from background areas to form vapors of said cleaning liquid, condensing said vapors of said cleaning liquid on said imaged recording surface by cooling said vapors whereby condensed cleaning liquid formed by condensing said vapors flows on said imaged recording surface and washes away toner particles deposited in background areas of said imaged recording surface, and collecting said condensed cleaning liquid.
Claim 6
Dependent Claim
36 words
A method of forming images according to claim 1 including forming a new electrostatic latent image on said electrostatographic imaging member and developing said new electrostatic latent image with another liquid developer having a different color.
Claim 7
Dependent Claim
34 words
A method of forming images according to claim 1 including condensing said vapors of said cleaning liquid on said imaged recording surface substantially immediately after developing said electrostatic latent image with said liquid developer.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |