US2990278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for transferring and fixing xerographic images
Assignee: Xerox Corp
•
Filing: 1955-12-29
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Granted: 1961-06-27
•
Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 Chester F Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:54
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/14; G03G15/16; G03G15/1605; G03G15/161; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN THE PROCESS OF XEROGRAPHY WHEREIN AN ELECTROSTATICALLY CHARGED XEROGRAPHIC PLATE IS EXPOSED TO PROJECTED IMAGE TO FORM AN ELECTROSTATIC LATENT IMAGE ON THE PLATE CORRESPONDING TO THE PROJECTED IMAGE AND THE PLATE IS DEVELOPED WITH OPPOSITELY CHARGED PARTICLES OF HEAT FUSIBLE DEVELOPING MATERIAL THAT ARE ATTACHED TO THE LATENT IMAGE TO FORM A XEROGRAPHIC POWDER IMAGE CORRESPONDING TO THE PROJECTED IMAGE, THE METHOD OF TRANSFERRING AND FIXING THE POWDER IMAGE TO A FINAL SUPPORT MATERIAL COMPRISING THE STEPS OF TRANSFERRING THE POWDER IMAGE TO A SMOOTH-SURFACED INTERMEDIATE SUPPORT MATERIAL, HEAT FUSING THE POWDER IMAGE IN
Claim 2
Dependent Claim
96 words
IN THE PROCESS OF XEROGRAPHY WHEREIN AN ELECTROSTATICALLY CHARGED XEROGRAPHIC PLATE IS EXPOSED TO PROJECTED IMAGE TO FORM AN ELECTROSTATIC LATENT IMAGE ON THE PLATE CORRESPONDING TO THE PROJECTED IMAGE AND THE PLATE IS DEVELOPED WITH OPPOSITELY CHARGED PARTICLES OF HEAT FUSIBLE DEVELOPING MATERIAL THAT ARE ATTACHED TO THE LATENT IMAGE TO FORM A XEROGRAPHIC POWDER IMAGE CORRESPONDING TO THE PROJECTED IMAGE, THE METHOD OF TRANSFERRING AND FIXING THE POWDER IMAGE TO A FINAL SUPPORT MATERIAL COMPRISING THE STEPS OF TRANSFERRING THE POWDER IMAGE TO A SMOOTH-SURFACED INTERMEDIATE SUPPORT MATERIAL, HEAT FUSING THE POWDER IMAGE IN
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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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |