US3692402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Materials for fibrous development and cleaning member
Assignee: Xerox Corp
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Filing: 1971-04-26
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Granted: 1972-09-19
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Expires: 1991-04-26
Abstract
Abstract A woven cut pile brush whose pile tufts are formed from glass fibers is particularly well suited for cleaning toner particles from reusable electrostatic imaging surfaces and for developing latent electrostatic charge patterns formed on an insulating surface.
Inventors
- 👤 Thomas W Solarek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:41
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0805; G03G21/00; G03G21/0005; G03G21/0035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
Apparatus for developing a latent electrostatic charge pattern formed on a support surface comprising: a brush element having a fibrous surface, said fibrous surface comprising glass fibers woven onto a backing member, said fibers having a pile height in the range from about 0.30 inches to about 0.90 inches and a pile density in the range from about 750,000 fibers per square inch to about 1,950,000 fibers per square inch, the diameter of said glass fibers being in the range from about 3.8 microns to about 15.3 microns, means for supporting said brush element adjacent to and in surface contact with said support surface, means for impregnating the brush element with a powder developing material, said fibrous surface adapted to hold thereon by electrostatic attraction powder material during impregnation and adapted to release said powder material for development of an electrostatic latent image, and means for causing relative motion between the brush element and the support surface, thereby depositing the developing material on said latent charge pattern.
Claim 2
Dependent Claim
167 words
Apparatus for developing a latent electrostatic charge pattern formed on a support surface comprising: a brush element having a fibrous surface, said fibrous surface comprising glass fibers woven onto a backing member, said fibers having a pile height in the range from about 0.30 inches to about 0.90 inches and a pile density in the range from about 750,000 fibers per square inch to about 1,950,000 fibers per square inch, the diameter of said glass fibers being in the range from about 3.8 microns to about 15.3 microns, means for supporting said brush element adjacent to and in surface contact with said support surface, means for impregnating the brush element with a powder developing material, said fibrous surface adapted to hold thereon by electrostatic attraction powder material during impregnation and adapted to release said powder material for development of an electrostatic latent image, and means for causing relative motion between the brush element and the support surface, thereby depositing the developing material on said latent charge pattern.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |