Patent US2173094A successfully refreshed from Google Patents.
Patent US3698314A successfully refreshed from Google Patents.
US3698314A
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Method for image transfer
Assignee: OI Glass Inc
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Filing: 1970-06-15
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Granted: 1972-10-17
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Expires: 1990-06-15
Abstract
Abstract A method and apparatus for image transfer in an electrophotography printing system wherein the removal of solid particulate toner in the form of an image on an image-defining element is accomplished by contacting the toner with a heated transfer roll. The portion of the toner directly contacted by the heated transfer roll softens and interparticle adhesion is increased by the combination of heat and pressure applied by the heated transfer roll. Simultaneously, the portion of the toner directly on the image-defining element becomes relatively less adherent to the surface of the image-defining element to thereby facilitate its transfer from the image-defining element to the heated transfer roll.
Inventors
- 👤 John D Grier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:40
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/14; G03G13/16; Y; Y10; Y10S; Y10S101/00; Y10S101/37; Y10T; Y10T156/00; Y10T156/19; Y10T156/1911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A method of transferring solid particulate toner in the form of an image from the surface of an image-defining element to an image-receiving substrate comprising the steps of: positioning said image-receiving substrate on a heated transfer roll for movement therewith; traversing said heated transfer roll and said image-receiving substrate across the surface of said image-defining element; bringing said image-receiving substrate on said heated transfer roll into direct contact with said toner particles on the surface of said image-defining element so that heat from said heated transfer roll is imparted through said image-receiving substrate to said toner particles creating a gradient through said toner particles and changing the adhesion characteristics of said toner particles such that said toner particles have a higher degree of attraction to said image-receiving substrate than to said image-defining element and are transferred to said image-receiving substrate; and separating said image-receiving substrate from said heated transfer roll after said toner particles in the form of said image have been transferred to said image-receiving substrate.
Claim 2
Independent Claim
167 words
A method of transferring solid particulate toner in the form of an image from the surface of an image-defining element to an image-receiving substrate comprising the steps of: positioning said image-receiving substrate on a heated transfer roll for movement therewith; traversing said heated transfer roll and said image-receiving substrate across the surface of said image-defining element; bringing said image-receiving substrate on said heated transfer roll into direct contact with said toner particles on the surface of said image-defining element so that heat from said heated transfer roll is imparted through said image-receiving substrate to said toner particles creating a gradient through said toner particles and changing the adhesion characteristics of said toner particles such that said toner particles have a higher degree of attraction to said image-receiving substrate than to said image-defining element and are transferred to said image-receiving substrate; and separating said image-receiving substrate from said heated transfer roll after said toner particles in the form of said image have been transferred to said image-receiving substrate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |