Patent ID: 7880759

Claim:
An image forming device comprising: a photoconductor drum; a line head including a substrate, a plurality of light emitting elements disposed on the substrate, at least one drive circuit that drives the light emitting elements, a plurality of wirings that electrically connect the drive circuit and the light emitting elements, and at least one imaging optical system that images light from the light emitting elements; at least one flexible printed circuit board electrically connected to the wirings; and a control section that supplies the line head with image data, wherein the light emitting elements form n (n is an integral number equal to or greater than 2) light emitting element rows in the rotational direction of the photoconductor drum, at least one of the drive circuits is electrically connected with the wirings to light emitting elements belonging to a number of light emitting element rows equal to or smaller than n−1, the drive circuits are disposed on the flexible printed circuit board, and the flexible printed circuit boards that mount the drive circuits are disposed on both sides of the substrate in the rotational direction of the photoconductor drum, and the number of flexible printed circuit boards disposed on one side of the substrate in the rotational direction of the photoconductor drum and the number of flexible printed circuit boards disposed on the other side of the substrate are different from each other.