| 摘要 |
PROBLEM TO BE SOLVED: To adjust each of pressing forces to a latent image carrier of a developer carrier in each development device, to a desired pressing force so that at least one of the pressing forces differ from the other, without complicating an assembly process of the development device, in an image formation device equipped with a plurality of development devices. ! SOLUTION: In a plurality of development devices 5Y, M, C, K, components are shared, and a pressing force to a photoreceptor 2 of a development roller 51 in each development device is adjusted irrespective of the components in such a way that a deadweight W of each development device and a drive force K generated from a gear driving each development roller are differentiated by differentiating a toner capacity in each development device. Also, a friction force P with the photoreceptor of each development roller is differentiated by differentiating circularity that is a characteristic contributing to a coefficient of friction of the toner |
