Patent ID: 6041204
Filing Date: 2000-03-21
Classification: G03G

Abstract:
A color image forming apparatus, comprising:an image forming member having a rotatable peripheral surface on which an organic photoconductor is provided;plural sets of charging means, imagewise exposure means, and developing means, the charging means charging the peripheral surface of the image forming member, the imagewise exposure means imagewise exposing a portion of the peripheral surface at an imagewise exposing position so as to form a latent image and the developing means developing the image at a developing position so as to form a toner image on the peripheral surface;wherein each set of the plural sets is provided separately from other sets around the peripheral surface of the image forming member so that plural color component images are formed one after another by the plural sets and are superimposed so as to form a color image on the peripheral surface during a single rotation of the peripheral surface, andwherein the developing means has a casing and the imagewise exposure means and the developing means of each set are arranged such that the portion on the peripheral surface located at the imagewise exposing position moves into the casing of the developing means before the electric-potential of the portion is lowered to half of V1 (V1/2), where V1 is the electric potential on the peripheral surface located at the imagewise exposing position.