US3592675A
Expired / Lapsed
US
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Method for developing latent electrostatic images
Assignee: Azoplate Corp
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Filing: 1967-10-09
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Granted: 1971-07-13
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Expires: 1987-10-09
Abstract
Abstract THIS INVENTION RELATES TO A METHOD FOR DEVELOPING AN ELECTROSTATIC LATENT IMAGE ON AN IMAGE SUPPORT WHICH COMPRISES CONTACTING THE IMAGE WITH A FUSIBLE RESIN POWDER TO DEVELOP THE IMAGE AREAS AND THEN CONTACTING THE IMAGE AND SUPPORT WITH A MIXTURE OF EFFECTIVE AMOUNTS OF FINELY DIVIDED IRON CARRIER PARTICLES AND A POWDER WHICH REMOVES UNDESIRED FUSIBLE RESIN PARTICLES FROM THE NON-IMAGE AREAS OF THE SUPPORT, THEREBY PRODUCING A DEVELOPED IMAGE WITH CLEAN NON-IMAGE AREAS.
Inventors
- 👤 Tung-Nan Cheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:43
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/097; G03G9/09733; G03G13/00; G03G13/06; G03G13/08; G03G15/00; G03G15/06; G03G15/08; G03G15/09; G03G15/095; G03G5/00; G03G5/005; G03G9/09708; G03G9/09725; G03G9/09775; G03G9/09783; G03G9/09791
Claims Analysis
Total Claims: 0
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |