Patent ID: 8035669

Claim:
An image forming apparatus comprising: a beam irradiating unit that irradiates plural beams for color and black on photoconductive members; a shutter in which plural blocking sections that block the plural beams, respectively, and plural transmitting sections that transmit the plural beams, respectively, are provided in parallel and that shift, in an opening and closing direction crossing an irradiating direction of the beams, among a first state in which the beams for black and color are opposed to the blocking sections, respectively, a second state in which the beam for color is opposed to the blocking section and the beam for black is opposed to the transmitting section, and a third state in which the beams for black and color are opposed to the transmitting sections and blocks or transmits the plural beams irradiated on the photoconductive members, respectively; and a single driving source which drives the shutter and is positioned on a side of the transmitting section for the beam for black.