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US 5,334,474 AGranted
Dry toner with mixed azo dye charge control agent
AssigneeLexmark International, Inc.
InventorsJerry J. Abbott, Brian W. Baird, Michael G. Miller
Life of this patent
Estimating the term…
Abstract
A dry toner having Zapon Yellow 141 as a charge control agent, dispersed moderately in the toner. Zapon Yellow 141 is about 95% by weight Solvent Yellow 81 and about 5% by weight Solvent Orange 56.
Claims6
A dry toner comprising resin particles, coloring matter and a charge control agent comprising Zapon Yellow 141.
A dry toner comprising resin particles, coloring and a charge control agent comprising a mixture of major amount of Solvent Yellow 19 and a minor amount of Solvent Orange 56.
Dependencies are inferred from the claim text.