Liquid developer for electrophotography containing the reaction product of a dyestuff and a fatty acid
Abstract
Abstract A LIQUID DEVELOPER FOR ELECTROPHOTOGRAPHY WHICH COMPRISES A DISPERSION OF A SALT-FORMING REACTION PRODUCT BETWEEN AT LEAST ONE DYESTUFF OR DYESTUFF BASE CONTAINING AMINO GROUPS AND AT LEAST ONE FATTY ACID OF NOT LESS THAN 8 CARBON ATOMS, IN A HIGH ELECTRIC RESISTANCE LIQUID AS CARRIER, SAID FATTY ACID BEING SOLUBLE IN SAID CARRIER LIQUID; CHARACTERIZED IN THAT AS A SALT FORMED FROM SAID FATTY ACID AND SAID DYESTUFF OR DYESTUFF BASE UN INSOLUBLE UN SAID HIGH ELECTRIC RESISTANCE LIQUID, AND THAT SAID FATTY ACID IS PRESENT IN AN AMOUNT OF AT LEAST 4 MOLS PER MOL OF SAID DYESTUFF OR DYESTUFF BASE, THE AMOUNT OF SAID FATTY ACID BEING SUFFICIENT TO DISPERSE SAID SLAT IN THE FINE DIVIDED STATE STABLY IN THE CARRIER LIQUID BUT BEING NOT SO EXCESSIVE AS TO CAUSE ANY BLEEDING OF AN IMAGE TO BE FORMED.
Inventors
- 👤 E Inoue
- 👤 Y Ueda
- 👤 T Aizawa
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |