US3247007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of developing latent electro- static images ushng solid developer body and related solvent
Assignee: —
•
Filing: 1964-07-22
•
Granted: 1966-04-19
•
Expires: 1984-07-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:40
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A METHOD OF DEVELOPING AND FIXING A LATENT ELECTROSTATIC IMAGE ON AN IMAGE BEARING SURFACE BY MEANS OF A SOLID DEVELOPER BODY OF SUBSTANTIAL SIZE COMPRISING A SUSPENSION OF PIGMENT PARTICLES IMMOBILELY SUSPENDED IN A BINDER WHICH IS NORMALLY IN A SOLID STATE AND WHICH IN SOLUTION IN A SOLVENT OF VOLUME RESISTIVITY GREATER THAN 10**9 OHM CM. AND DIELECTRIC CONSTANT LESS THAN 3 HAS AN ELECTRICAL RESISTANCE SUFFICIENTLY HIGH TO AVOID DISSIPATION OF THE LATENT ELECTROSTATIC IMAGE DURING DEVELOPMENT, COMPRISING THE STEPS OF MOVING SAID SOLID DEVELOPER BODY AND SAID IMAGE BEARING SURFACE IN RELATION TO EACH OTHER, WETTING THE DEVELOPER BODY WITH SAID SOLVENT WHEREBY A PORTION OF SAID BINDER IS DISSOLVED, CONTACTING THE LATENT ELECTROSTATIC IMAGE WITH THE DISSOLVED BINDER, SAID PIGMENT BEING RELEASED WITH DISSOLVING OF SAID BINDER AND DEVELOPING SAID LATENT ELECTROSTATIC IMAGE BY IMGRATING TO AND DEPOSITING ON SAID IMAGE UNDER THE INFLUENCE OF THE LATENT ELECTROSTATIC FIELD AND ALLOWING SAID SOLVENT TO EVAPORATE WHEREBY THE DISSOLVED BINDER ADHERES AND FIXES THE RELEASED PIGMENT ON SAID SURFACE.
Claim 2
Independent Claim
173 words
A METHOD OF DEVELOPING AND FIXING A LATENT ELECTROSTATIC IMAGE ON AN IMAGE BEARING SURFACE BY MEANS OF A SOLID DEVELOPER BODY OF SUBSTANTIAL SIZE COMPRISING A SUSPENSION OF PIGMENT PARTICLES IMMOBILELY SUSPENDED IN A BINDER WHICH IS NORMALLY IN A SOLID STATE AND WHICH IN SOLUTION IN A SOLVENT OF VOLUME RESISTIVITY GREATER THAN 10**9 OHM CM. AND DIELECTRIC CONSTANT LESS THAN 3 HAS AN ELECTRICAL RESISTANCE SUFFICIENTLY HIGH TO AVOID DISSIPATION OF THE LATENT ELECTROSTATIC IMAGE DURING DEVELOPMENT, COMPRISING THE STEPS OF MOVING SAID SOLID DEVELOPER BODY AND SAID IMAGE BEARING SURFACE IN RELATION TO EACH OTHER, WETTING THE DEVELOPER BODY WITH SAID SOLVENT WHEREBY A PORTION OF SAID BINDER IS DISSOLVED, CONTACTING THE LATENT ELECTROSTATIC IMAGE WITH THE DISSOLVED BINDER, SAID PIGMENT BEING RELEASED WITH DISSOLVING OF SAID BINDER AND DEVELOPING SAID LATENT ELECTROSTATIC IMAGE BY IMGRATING TO AND DEPOSITING ON SAID IMAGE UNDER THE INFLUENCE OF THE LATENT ELECTROSTATIC FIELD AND ALLOWING SAID SOLVENT TO EVAPORATE WHEREBY THE DISSOLVED BINDER ADHERES AND FIXES THE RELEASED PIGMENT ON SAID SURFACE.
References Cited (Backward Citations)
US686462A
Cited
US1720719A
Cited
US2551582A
Cited
US2624652A
Cited
US2857271A
Cited
US3079272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |