US2968552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic apparatus and method
Assignee: Xerox Corp
•
Filing: 1956-10-01
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Granted: 1961-01-17
•
Expires: 1976-10-01
Abstract
No abstract record available.
Inventors
- 👤 Robert W Gundlach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:28
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/24; Y; Y10; Y10S; Y10S101/00; Y10S101/37; Y10S430/00; Y10S430/001; Y10S430/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
THE METHOD OF FORMING A XEROGRAPHIC PRINT ON A TRANSFER MEMBER COMPRISING FORMING A UNIFORMLY ELECTROSTATIC CHARGED LAYER OF DEVELOPER POWDER ON THE SURFACE OF A PHOTOCONDUCTIVE INSULATING LAYER, THEN EXPOSING THE PHOTOCONDUCTIVE INSULATING LAYER TO AN IMAGE PATTERN OF LIGHT AND SHADOW TO BE REPRODUCED AND PLACING THE TRANSFER MEMBER IN CONTACT WITH THE CHARGED DEVELOPER POWDER TO TRANSFER A POWDER IMAGE TO SAID TRANSFER MEMBER, SAID TRANSFER MEMBER BEING CHARACTERIZED BY ITS ABILITY TO LATERALLY CONDUCT ELECTRICITY.
Claim 2
Independent Claim
79 words
THE METHOD OF FORMING A XEROGRAPHIC PRINT ON A TRANSFER MEMBER COMPRISING FORMING A UNIFORMLY ELECTROSTATIC CHARGED LAYER OF DEVELOPER POWDER ON THE SURFACE OF A PHOTOCONDUCTIVE INSULATING LAYER, THEN EXPOSING THE PHOTOCONDUCTIVE INSULATING LAYER TO AN IMAGE PATTERN OF LIGHT AND SHADOW TO BE REPRODUCED AND PLACING THE TRANSFER MEMBER IN CONTACT WITH THE CHARGED DEVELOPER POWDER TO TRANSFER A POWDER IMAGE TO SAID TRANSFER MEMBER, SAID TRANSFER MEMBER BEING CHARACTERIZED BY ITS ABILITY TO LATERALLY CONDUCT ELECTRICITY.
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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) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |