| 摘要 |
PROBLEM TO BE SOLVED: To reduce toner consumption while suppressing degradation in picture quality without lowering a process linear speed, relating to an image formation device of electrophotographic method.SOLUTION: Exposure devices 2a-2d are a multi-beam type exposure device in which a plurality of beams are radiated to photoreceptor drums 1a-1d to form an electrostatic latent image of a print image. A control part 16, when the exposure devices 2a-2d are made to form the electrostatic latent image of the print image corresponding to an image portion of a certain concentration based on an image data, radiates one beam among a plurality of beams to the photoreceptor drums 1a-1d at a first exposure amount corresponding to a certain concentration, and radiates a beam adjoining the beam of the first exposure amount to the photoreceptor drums 1a-1d at a second exposure amount which is less than the first exposure amount. |
