US3767446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Development method with oscillating brush pad
Assignee: Xerox Corp
•
Filing: 1971-09-15
•
Granted: 1973-10-23
•
Expires: 1991-09-15
Abstract
Abstract A method for developing a latent electrostatic image with electroscopic material wherein development is effected by utilizing a biased toner cloud generator for conveying developer to the image bearing surface and an oscillating brush pad mounted adjacent to and conforming to the shape of the surface to enhance the development of the image. A cloud of toner is generated by oscillating a container supporting developer to release charged toner therefrom and the cloud thereupon contacts the image bearing surface. By then oscillating the brush pad on the surface, toner affixed to the non-image background areas is redistributed to the image to produce a high quality developed image.
Inventors
- 👤 E Weiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:52
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0803; G03G15/0822; G03G15/0877
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
The method as recited in claim 1 wherein said support surface is on a rotating drum and the oscillating brushing movement is in a direction generally parallel to the axis of the drum.
Claim 2
Dependent Claim
22 words
The method as recited in claim 1 wherein a powder cloud of toner particles is generated for contacting the support surface therewith.
References Cited (Backward Citations)
US2959153A
Cited
US2987037A
Cited
US3238053A
Cited
US3470009A
Cited
US3503776A
Cited
US3357402A
Cited
US3589895A
Cited
US3592675A
Cited
US3670701A
Cited
US3632370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |