US3202526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for liquid development of latent images
Assignee: SCM Corp
•
Filing: 1961-10-05
•
Granted: 1965-08-24
•
Expires: 1981-10-05
Abstract
No abstract record available.
Inventors
- 👤 Ralph G Ostensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:09
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN THE METHOD OF DEVELOPING A LATENT ELECTROSTATIC IMAGE PLACED ON A SHEET BY APPLICATION OF A LIQUID DEVELOPER ON THE SHEET, THE IMPROVEMENT COMPRISING THE STEPS OF GUIDING THE SHEET CONTAINING A LATENT ELECTROSTATIC IMAGE DOWNWARDLY TOWARD A DEVELOPER STATION; DEFLECTING THE LEADING EDGE OF THE SHEET UPWARDLY BY GUIDE MEANS SOLELY CONTACTING THE LOWER SURFACE OF THE SHEET TO THEREBY PROVIDE A CURVED SHEET PORTION AT THE DEVELOPER STATION HAVING A DECLIVITY; EVENLY DISTRIBUTING THE LIQUID DEVELOPER AS A THIN FILM UNIFORMLY ACROSS THE SHEET IN A DIRECTION PERPENDICULAR TO ITS DIRECTION ON TRAVEL ONLY ON THE UPPER SURFACE OF THE DECLIVITY OF THE CURVED SHEET AT THE DEVELOPER STATION BY DEPOSITING THE LIQUID DEVELOPER ON THE SHEET SURFACE THROUGH GRAVITY FALL FROM A SUPPLY MEANS THAT IS SPACED FROM THE UPPER SURFACE OF THE LATENT IMAGE ON THE SHEET TO PROVIDE TOTAL SHEET COVERAGE WITH A MINIMUM PENETRATION OF THE LIQUID
Claim 2
Dependent Claim
154 words
IN THE METHOD OF DEVELOPING A LATENT ELECTROSTATIC IMAGE PLACED ON A SHEET BY APPLICATION OF A LIQUID DEVELOPER ON THE SHEET, THE IMPROVEMENT COMPRISING THE STEPS OF GUIDING THE SHEET CONTAINING A LATENT ELECTROSTATIC IMAGE DOWNWARDLY TOWARD A DEVELOPER STATION; DEFLECTING THE LEADING EDGE OF THE SHEET UPWARDLY BY GUIDE MEANS SOLELY CONTACTING THE LOWER SURFACE OF THE SHEET TO THEREBY PROVIDE A CURVED SHEET PORTION AT THE DEVELOPER STATION HAVING A DECLIVITY; EVENLY DISTRIBUTING THE LIQUID DEVELOPER AS A THIN FILM UNIFORMLY ACROSS THE SHEET IN A DIRECTION PERPENDICULAR TO ITS DIRECTION ON TRAVEL ONLY ON THE UPPER SURFACE OF THE DECLIVITY OF THE CURVED SHEET AT THE DEVELOPER STATION BY DEPOSITING THE LIQUID DEVELOPER ON THE SHEET SURFACE THROUGH GRAVITY FALL FROM A SUPPLY MEANS THAT IS SPACED FROM THE UPPER SURFACE OF THE LATENT IMAGE ON THE SHEET TO PROVIDE TOTAL SHEET COVERAGE WITH A MINIMUM PENETRATION OF THE LIQUID
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |