Toner compositions containing a multi-purpose additive
AssigneeEastman Kodak Company
InventorsLawrence P. DeMejo, John M. McCabe, John C. Wilson
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Abstract
Low fusing temperature toner compositions with good keep and broad fusing latitude characteristics are provided. The toner compositions are the reaction product of a linear or branched carboxylated polyester crosslinked with an epoxy novolac resin utilizing a multi-purpose additive as a catalyst for the crosslinking reaction and as a charge control agent for the toner powder.
Claims3
Toner compositions comprising a linear or branched carboxylated polyester resin having an acid content of about 0.1 to about 0.7 milliequivalents based upon hydronium ion weight per gram that is crosslinked with a multifunctional epoxy novolac resin and a multi-purpose additive that is a catalyst for the crosslinking reaction and a charge control agent for the toner composition.
A method of producing crosslinked toner compositions comprising the step of reacting a linear or branched carboxylated polyester resin, a polyfunctional epoxy novolac resin and a multi-purpose additive that is a catalyst for the crosslinking reaction and a charge control agent for the toner composition in a melt reactor at a temperature in the range of about 160.degree. to 240.degree. C. for a period of about 10 minutes.
Dependencies are inferred from the claim text.