US3105770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cascade development improvement
Assignee: Xerox Corp
•
Filing: 1960-04-15
•
Granted: 1963-10-01
•
Expires: 1980-04-15
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Lehmann
- 👤 Robert W Gundlach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:55
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0801
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
THE METHOD OF DEVELOPING A LATENT ELECTROSTATIC IMAGE ON A CYLINDRICALLY SHAPED MEMBER HAVING A HORIZONTAL AXIS AND ROTATING ABOUT SAID AXIS IN A FIRST DIRECTION COMPRISING, DIRECTING IN SAID FIRST DIRECTION TWO-COMPONENT GRANULAR ELECTROSTATIC DEVELOPER MATERIAL MADE UP OF A CARRIER AND TONER MIXTURE INTO CONTACT WITH THE CURVED PERIPHERY OF SAID CYLINDER ALONG A LINE SUBSTANTIALLY TANGENTIAL TO THE CYLINDER PERIPHERY AT A SPEED IN EXCESS OF THE PERIPHERAL SPEED OF SAID CYLINDER AND ALLOWING SAID DEVELOPER MATERIAL TO FALL OUT OF CONTACT WITH SAID CYLINDER AT A POINT LOWER THAN THE POINT OF INITIAL CONTACT BETWEEN SAID DEVELOPING MATERIAL AND SAID CYLINDER, DEVELOPING SUBSTANTIALLY UNIFORMLY SAID LATENT ELECTROSTATIC IMAGE BY VIRTUE OF THE ROLLING CONTACT BETWEEN SAID DEVELOPING MATERIAL AND SAID CYLINDER FROM THE POINT OF INITIAL DEVELOPER CONTACT TO THE POINT OF DEVELOPER SEPARATION.
Claim 2
Independent Claim
138 words
THE METHOD OF DEVELOPING A LATENT ELECTROSTATIC IMAGE ON A CYLINDRICALLY SHAPED MEMBER HAVING A HORIZONTAL AXIS AND ROTATING ABOUT SAID AXIS IN A FIRST DIRECTION COMPRISING, DIRECTING IN SAID FIRST DIRECTION TWO-COMPONENT GRANULAR ELECTROSTATIC DEVELOPER MATERIAL MADE UP OF A CARRIER AND TONER MIXTURE INTO CONTACT WITH THE CURVED PERIPHERY OF SAID CYLINDER ALONG A LINE SUBSTANTIALLY TANGENTIAL TO THE CYLINDER PERIPHERY AT A SPEED IN EXCESS OF THE PERIPHERAL SPEED OF SAID CYLINDER AND ALLOWING SAID DEVELOPER MATERIAL TO FALL OUT OF CONTACT WITH SAID CYLINDER AT A POINT LOWER THAN THE POINT OF INITIAL CONTACT BETWEEN SAID DEVELOPING MATERIAL AND SAID CYLINDER, DEVELOPING SUBSTANTIALLY UNIFORMLY SAID LATENT ELECTROSTATIC IMAGE BY VIRTUE OF THE ROLLING CONTACT BETWEEN SAID DEVELOPING MATERIAL AND SAID CYLINDER FROM THE POINT OF INITIAL DEVELOPER CONTACT TO THE POINT OF DEVELOPER SEPARATION.
References Cited (Backward Citations)
US2705199A
Cited
US2852651A
Cited
US2884348A
Cited
US2779306A
Cited
US2878120A
Cited
US3013342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |