Carbon blacks, toners, and composites and methods of making same
AssigneeCabot Corporation
InventorsAnne K. Shim, Eugene N. Step, Agathagelos Kyrlidis
Life of this patent
Estimating the term…
Abstract
A chemical toner is described as well as methods of preparing the same.
Claims24
A toner composition comprising a resin and a colorant, wherein the colorant is a) a modified pigment comprising a pigment having attached at least one organic group having one of the formulas:
- —Ar, —Ar-Alkx,
- wherein the organic group is directly attached to the pigment, and where Ar is aryl or arylene group, Alk is an alkyl or alkylene group, x is an integer of 1 to 5, n is an integer of 1 to 5, 1 is an integer of 1 to 5, k is an integer of 1 to 10, m is 10-k, and where x is 2 or more, each of the substituents are the same or different, or b) a modified pigment comprising a pigment with at least one adsorbed phenyl containing polymer on the colorant's surface.
A chemical toner for electrophotography comprising a treated filler dispersed in at least one polymer, wherein the chemical toner is capable of having a lower fixing temperature than if prepared with non-treated filler, wherein said at least one polymer optionally having a solubility parameter and said treated filler having a calculated solubility parameter such that said solubility parameter and said calculated solubility parameter are within 10% of each other.
Dependencies are inferred from the claim text.