US3272644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Development of latent electrostatic images with crystalline toners
Assignee: Dennison Manufacturing Co
•
Filing: 1963-07-31
•
Granted: 1966-09-13
•
Expires: 1983-07-31
Abstract
No abstract record available.
Inventors
- 👤 George R Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:59
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/12; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0503; G03G5/051; G03G5/0514; G03G5/0517; G03G5/08; G03G5/087; G03G9/097; G03G9/09733; G03G9/09775
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
THE METHOD OF DEVELOPING A LATENT ELECTROSTATIC IMAGE ON A COATING OF PHOTOCONDUCTIVE PARTICLES SUSPENDED IN A THEREMOPLASTIC RESIN ON A SUPPORT, SAID METHOD COMPRISING CONTACTING SAID IMAGE WITH FINELY DIVIDED SOLID TONER PARTICLES CONSISTING ESSENTIALLY OF DYE DISPERSED IN A WATER INSOLUBLE CRYSTALLINE ORGANIC MATERIAL NON-REACTIVE WITH SAID DYE, SAID DYE CONSTITUTING FROM 10 TO 60 PERCENT BY WEIGHT OF SAID TONER PARTICLES, SAID MATERIAL HAVING A MELTING RANGE WITHIN ABOUT 1*C. BETWEEN ABOUT 140*F. AND THE CHARRING TEMPERATURE OF SAID RESIN AND SUPPORT, SAID MATERIAL, WHEN MELTED, BEING A SOLVENT FOR SUBSTANTIALLY ALL OF SAID DYE AND A SOLVATING AGENT FOR SAID THERMOPLASTIC RESIN, SAID MELTED MATERIAL HAVING A STEADILY DECLINING VISCOSITY WITH THE TEMPERATURE AND HAVING AT ITS LOWEST MELT TEMPERATURE A VISCOSITY NOT EXCEEDING ABOUT 40 CENTIPOISES, SAID MATERIAL HAVING ITS LONGEST LINEAR CARBON CHAIN NOT EXCEEDING 15 CARBON UNITS AND A MOLECULAR WEIGHT NOT IN EXCESS OF ABOUT 350, AND FUSING THE TONER PARTICLES ADHERING TO SAID IMAGE TO CAUSE THE DYE TO BE ABSORBED BY SAID COATING.
Claim 2
Independent Claim
173 words
THE METHOD OF DEVELOPING A LATENT ELECTROSTATIC IMAGE ON A COATING OF PHOTOCONDUCTIVE PARTICLES SUSPENDED IN A THEREMOPLASTIC RESIN ON A SUPPORT, SAID METHOD COMPRISING CONTACTING SAID IMAGE WITH FINELY DIVIDED SOLID TONER PARTICLES CONSISTING ESSENTIALLY OF DYE DISPERSED IN A WATER INSOLUBLE CRYSTALLINE ORGANIC MATERIAL NON-REACTIVE WITH SAID DYE, SAID DYE CONSTITUTING FROM 10 TO 60 PERCENT BY WEIGHT OF SAID TONER PARTICLES, SAID MATERIAL HAVING A MELTING RANGE WITHIN ABOUT 1*C. BETWEEN ABOUT 140*F. AND THE CHARRING TEMPERATURE OF SAID RESIN AND SUPPORT, SAID MATERIAL, WHEN MELTED, BEING A SOLVENT FOR SUBSTANTIALLY ALL OF SAID DYE AND A SOLVATING AGENT FOR SAID THERMOPLASTIC RESIN, SAID MELTED MATERIAL HAVING A STEADILY DECLINING VISCOSITY WITH THE TEMPERATURE AND HAVING AT ITS LOWEST MELT TEMPERATURE A VISCOSITY NOT EXCEEDING ABOUT 40 CENTIPOISES, SAID MATERIAL HAVING ITS LONGEST LINEAR CARBON CHAIN NOT EXCEEDING 15 CARBON UNITS AND A MOLECULAR WEIGHT NOT IN EXCESS OF ABOUT 350, AND FUSING THE TONER PARTICLES ADHERING TO SAID IMAGE TO CAUSE THE DYE TO BE ABSORBED BY SAID COATING.
References Cited (Backward Citations)
US1791431A
Cited
US1953438A
Cited
US2355359A
Cited
US2917460A
Cited
US2899335A
Cited
US3083117A
Cited
US2953470A
Cited
US3080251A
Cited
US3053688A
Cited
US3079272A
Cited
US3165420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |