US3240596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic processes and apparatus
Assignee: International Business Machines Corp
•
Filing: 1961-07-28
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Granted: 1966-03-15
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Expires: 1981-07-28
Abstract
No abstract record available.
Inventors
- 👤 Mcdley Harold Clinton
- 👤 Schaffert Roland Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:01
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/14; G03G15/18; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD OF TRANSFERRING AN ELECTROSTATIC IMAGE ON A PHOTOCONDUCTIVE INSULATOR MATERIAL TO DIELECTRIC MATERIAL, COMPRISING THE STEPS OF PLACING A UNIFORM CHARGE ON ONE FACE OF SAID DIELECTRIC MATERIAL OF POLARITY OPPOSITE TO THAT ON ONE FACE FORMING SAID ELECTROSTATIC IMAGE ON SAID INSULATOR MATERIAL. PLACING SAID ONE FACE OF SAID CHARGED DIELECTRIC MATERIAL IN VIRTUAL CONTACT WITH SAID ONE FACE OF SAID CHARGED INSULATOR MATERIAL, ELECTRICALLY INTERCONNECTING SAID DIELECTRIC MATERIAL AND SAID INSULATOR MATERIAL AT A PREDETERMINED DIRECT POTENTIAL DIFFERENCE FOR ELECTRON FLOW THEREBETWEEN, DISCONNECTING SAID ELECTRIC CONNECTION BETWEEN SAID MATERIALS, AND SEPARATING SAID MATERIALS, THEREBY TRANSFERRING SAID IMAGE TO SAID DIELECTRIC MATERIAL WITH THE IMAGE THEREON AT ONE POLARITY AND THE BACKGROUND AT OPPOSITE POLARITY.
Claim 2
Independent Claim
118 words
A METHOD OF TRANSFERRING AN ELECTROSTATIC IMAGE ON A PHOTOCONDUCTIVE INSULATOR MATERIAL TO DIELECTRIC MATERIAL, COMPRISING THE STEPS OF PLACING A UNIFORM CHARGE ON ONE FACE OF SAID DIELECTRIC MATERIAL OF POLARITY OPPOSITE TO THAT ON ONE FACE FORMING SAID ELECTROSTATIC IMAGE ON SAID INSULATOR MATERIAL. PLACING SAID ONE FACE OF SAID CHARGED DIELECTRIC MATERIAL IN VIRTUAL CONTACT WITH SAID ONE FACE OF SAID CHARGED INSULATOR MATERIAL, ELECTRICALLY INTERCONNECTING SAID DIELECTRIC MATERIAL AND SAID INSULATOR MATERIAL AT A PREDETERMINED DIRECT POTENTIAL DIFFERENCE FOR ELECTRON FLOW THEREBETWEEN, DISCONNECTING SAID ELECTRIC CONNECTION BETWEEN SAID MATERIALS, AND SEPARATING SAID MATERIALS, THEREBY TRANSFERRING SAID IMAGE TO SAID DIELECTRIC MATERIAL WITH THE IMAGE THEREON AT ONE POLARITY AND THE BACKGROUND AT OPPOSITE POLARITY.
References Cited (Backward Citations)
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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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |