Environmentally friendly ferrite carrier core, and developer containing same
AssigneeXerox Corporation
InventorsScott M. Silence, George R. Hsu, Brian E. Moore, Morris M. Deyoung, Jr.
Life of this patent
Estimating the term…
Abstract
A carrier core for use in an electrostatographic developer composition is a ferrite substantially free of copper and zinc. By being substantially free of copper and zinc, the carrier core is environmentally friendly and eliminates the need for use of conventional copper zinc carrier cores which must be handled as hazardous waste. Developer compositions employing the ferrite carrier core possess suitable properties.
Claims13
A coated carrier for use in a developer comprising a core particle comprised of ferrite substantially free of copper and zinc coated with a coating comprised of a mixture of a negatively charging polymer and a positively charging polymer.
A developer comprising coated carriers comprising a core particle comprised of ferrite substantially free of copper and zinc coated with a coating comprised of a mixture of a negatively charging polymer and a positively charging polymer, and toner particles.
Dependencies are inferred from the claim text.