Patent ID: 7869724
Filing Date: 2011-01-11
Classification: G03G

Abstract:
1. An image density control device comprising: a first detecting unit that detects a light amount of first specular reflected light which is reflected from a surface of an image carrier when light is irradiated onto a portion of no image on the surface of the image carrier; a second detecting unit that detects a light amount of first diffuse reflected light which is reflected from an image on the surface of the image carrier when light is irradiated onto the image on the surface of the image carrier, wherein the image is formed by an image forming unit; a surface change information acquiring unit that acquires a surface change information which shows changes with time in reflectance of the surface of the image carrier; and a control unit that corrects the light amount of the first specular reflected light by using the surface change information to a light amount of second specular reflected light, and controls the density of the image formed on the image carrier by using the light amount of the first diffuse reflected light and the light amount of the second specular reflected light.