Formulation for a developer mix having tribocharge uniformity across different temperature and humidity conditions

摘要

A developer mix formulation having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by using magnetic carrier particles having surface additives on its surface. Surface additives include but are not limited to silica, titania and alumina.

主权项

1. A developer mix formulation to be used in an electrophotographic imaging device comprising:
toner particles, magnetic carrier particles having a polymer coating on their outer surface; and one or more extra particular additives selected from the group consisting of silica, titania and alumina or combinations thereof surface treated on the outer surface of the polymer coated magnetic carrier particles.