Magnetic developer apparatus for applying two different colored toners with the same applicator

Abstract

A copying apparatus comprises a photosensitive body and a developing device. The developing device includes a first storage chamber for storing a first red toner, a second storage chamber adjacent to the first storage chamber for storing a second black toner, and a developing roller having an outer peripheral surface consisting of a first portion facing the photosensitive body, a second portion located inside the first storage chamber, and a third portion located inside the second storage chamber, and rotatable clockwise and counterclockwise. The first red toner is supplied from the first storage chamber to the photosensitive body when the developing roller rotates clockwise, and the second black toner is supplied from the second storage chamber to the photosensitive body when the developing roller rotates counterclockwise.

Dependencies are inferred from the claim text.