Patent ID: 9041757
Filing Date: 2015-05-26
Classification: G03G

Abstract:
1. An image forming apparatus capable of executing a plurality of modes for forming an image on a recording medium, among which a speed of a surface of a plurality of photosensitive members differ, the image forming apparatus comprising: the plurality of the photosensitive members provided for each of a plurality of colors; a plurality of charging units provided for each of a plurality of colors and configured to charge the plurality of photosensitive members; a plurality of light irradiation units provided for each of a plurality of colors and configured to irradiate the plurality of photosensitive members charged by the charging units with light emitted from a light source to form a latent image; a plurality of developing units provided for each of a plurality of colors and configured to form a toner image by causing toner particles to adhere to the latent image; a control unit configured to cause the light irradiation unit to irradiate the photosensitive members at an image forming portion to which toner particles adhere with light emitted from the light source by a first light emission amount, and cause the light irradiation unit to irradiate the photosensitive members at a non-image forming portion to which no toner particles adhere with light emitted from the light source by a second light emission amount that is smaller than the first light emission amount; an adjusting unit configured to adjust the first light emission amount and the second light emission amount; and an acquisition unit configured to acquire information relating to the speed of the surface of the photosensitive members in a mode to be executed among the plurality of modes, wherein the adjusting unit is configured to change the second light emission amount according to the information acquired by the acquisition unit wherein a power source voltage of a power source, or a converted voltage obtainable by converting the power source voltage using a converter, is applied via an element having stationary voltage drop characteristics to divide and/or reduce the voltage to the plurality of charging units corresponding to the plurality of colors and to the plurality of developing units corresponding to the plurality of colors.