US2859128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of developing xerographic image
Assignee: Xerox Corp
•
Filing: 1955-03-14
•
Granted: 1958-11-04
•
Expires: 1975-03-14
Abstract
No abstract record available.
Inventors
- 👤 Matthews Earnest Paul
- 👤 Eugene C Ricker
- 👤 Paul G Andrus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:39
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0803
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD OF DEVELOPING A XEROGRAPHIC IMAGE ON AN IMAGE BEARING SURFACE COMPRISING MOVING A POROUS MATERIAL SUBSTANTIALLY UNIFORMLY IMPREGNATED AND LOADED WITH DRY LOOSE AND RELEASABLE XEROGRAPHIC DEVELOPER POWDER PARTICLES AT A UNIFORM RATE OF SPEED THROUGH A PREDETERMINED PATH, FLOWING A UNIFORM AND CONTROLLED GAS FLOW THROUGH SUCCESSIVE PORTIONS OF THE MATERIAL LOADED WITH XEROGRAPHIC DEVELOPER POWDER PARTICLES AS SAID POROUS MATERIAL MOVES THROUGH SAID PREDETERMINED PATH, SAID GAS BEING AT A SUFFICIENT PRESSURE TO REMOVE PARTICLES FROM SAID PORTIONS INTO THE GAS FLOW THERBY CREATING AN AEROSOL OF XEROGRAPHIC DEVELOPER POWDER PARTICLES, AND FLOWING THE AEROSOL OF XEROGRAPHIC DEVELOPER POWDER PARTICLES TO A DEVELOPMENT ZONE FOR DEPOSITION IN IMAGE FORMATION ON THE IMAGE BEARING SURFACE.
Claim 2
Independent Claim
118 words
A METHOD OF DEVELOPING A XEROGRAPHIC IMAGE ON AN IMAGE BEARING SURFACE COMPRISING MOVING A POROUS MATERIAL SUBSTANTIALLY UNIFORMLY IMPREGNATED AND LOADED WITH DRY LOOSE AND RELEASABLE XEROGRAPHIC DEVELOPER POWDER PARTICLES AT A UNIFORM RATE OF SPEED THROUGH A PREDETERMINED PATH, FLOWING A UNIFORM AND CONTROLLED GAS FLOW THROUGH SUCCESSIVE PORTIONS OF THE MATERIAL LOADED WITH XEROGRAPHIC DEVELOPER POWDER PARTICLES AS SAID POROUS MATERIAL MOVES THROUGH SAID PREDETERMINED PATH, SAID GAS BEING AT A SUFFICIENT PRESSURE TO REMOVE PARTICLES FROM SAID PORTIONS INTO THE GAS FLOW THERBY CREATING AN AEROSOL OF XEROGRAPHIC DEVELOPER POWDER PARTICLES, AND FLOWING THE AEROSOL OF XEROGRAPHIC DEVELOPER POWDER PARTICLES TO A DEVELOPMENT ZONE FOR DEPOSITION IN IMAGE FORMATION ON THE IMAGE BEARING SURFACE.
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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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |