Patent ID: 8203587
Filing Date: 2012-06-19
Classification: B41J,G03G

Abstract:
1. An image formation device, comprising: an exposure head in which a screw having an axis directed to a focus direction for a photoreceptor is fixed in the vicinity of each side of the exposure head; a housing to which the exposure head is attached; a nut attached to the screw; a fixing member attached to a side of a nut attaching face, that allows the nut to rotate on the screw and engages with the nut by being pushed to the side of the nut attaching face to support the nut in the focus direction, and that limits movement of the nut with respect to the housing in a main-scanning direction and a sub-scanning direction of the photoreceptor together with the screw; and an elastic member that is attached by inserting the screw in the elastic member between the housing and the exposure head, and elastically supports the exposure head against the housing in the vicinity of the screw in the focus direction for the photoreceptor and the sub-scanning direction, wherein the exposure head is moved, by rotation of the nut, in the focus direction against an elastic force by the elastic member, and a position of the exposure head with respect to the photoreceptor is adjustable in the focus direction.