Patent ID: 7999838
Filing Date: 2011-08-16
Classification: B41J,H04N

Abstract:
1. A method of adjusting a position of a line head comprising: a substrate; a plurality of light emitters, arrayed on the substrate in a first direction, each of which is operable to emit a light beam; a rod lens array, in which a plurality of rod lenses are arrayed in the first direction, and each of the rod lenses is adapted to focus the light beam emitted from an associated one of the light emitters onto a target surface; a holder, to which the substrate and the rod lens array are attached, the holder being elongated in the first direction; and positioning members, provided at both end portions of the holder in the first direction, wherein the substrate and the holder are movable in a second direction perpendicular to the first direction, wherein the method comprises: observing focused light spots formed by light beams emitted from at least two of the light emitters, thereby defining a first line connecting the focused light spots; defining a second line connecting the positioning members; and positioning at least one of the substrate and the holder such that the first line is made parallel with the second line.