Method for magnetic development
Abstract
Abstract THIS INVENTION IS AN IMPROVED METHOD OF RAAPIDLY STARTING AND STOPPING MAGNETIC DEVELOPMENT OF A LATENT ELECTROSTATIC IMAGE CARRIED ON A MOVING PHOTOCONDUCTIVE MEMBER WHEREIN A MAGNET IS CLOSE PROXIMITY TO THE PHOTOCONDUCTIVE MEMBER PRODUCES A MAGNETIC FLUX FIELD DIRECTED TOWARD THE IMAGE BEARING PHOTOCONDUCTIVE MEMBER WHICH MAGNET IS ENCLOSED IN AN APPLICATION ROLL TRANSPORTING THE MAGNETIZALE DEVELOPER MATERIAL INTO THE MAGNETIC FLUX FIELD DIRECTED BETWEEN THE MAGNET AND THE PHOTOCONDUCTIVE MEMBER. THE APPLICAOR ROLL IS ROTATED TO CARRY THE DEVELOPER TOWARD THE MAGNETIC FLUX FIELD PRODUCED BY THE MAGNET ORIENTED IN A FIRST POSITION TO FORM A MAGNETIC BUSH CONTACTING AND DEVELOPING A LATENT IMAGE. THE MAGNET IS PIVOTALLY DISPLACED TO A SECOND POSITION IN WHICH THE MAGNETIC FLUX FIELD IS DIRECTED AWAY FROM THE LATENT IMAGE. DEVELOPMENT CEASES AND THE APPLICATOR ROLL IS IMMEDIATELY STOPPED.
Inventors
- 👤 L Turner
Bibliographic Details
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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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |