Patent ID: 8217972

Claim:
A printer for recording on a lenticular sheet having a plurality of lenticular lenses formed on an obverse surface, said lenses extending in a main scan direction, said printer comprising: a transport section for transporting said lenticular sheet along a transport track extending in a sub scan direction perpendicular to the main scan direction; a recording section for subdividing multiple viewpoint images into stripe images parallel to the main scan direction and recording said stripe images on a reverse surface of said lenticular sheet; at least first to third detecting sensors disposed in said transport track and aligned in the main scan direction, to output detection signals corresponding to concavities and convexities of said lenticular lenses, at least one of three distances existing between said first to third detecting sensors being different from other two; an attitude adjusting section for adjusting attitude of said lenticular sheet on said transport track; and a control section for determining, prior to the recording by said recording section, direction and angle of tilt of the longitudinal direction of said lenticular lenses relative to the main scan direction on the basis of the detection signals of said first to third detecting sensors, and controlling said attitude adjusting section on the basis of the tilt direction and angle to align the longitudinal direction of said lenticular lenses to be substantially parallel to the main scan direction, wherein the tilt direction is determined from the detection signals of said first to third detecting sensors, whereas the tilt angle is determined from the detection signals of two of said detecting sensors, and wherein said attitude adjusting section roughly adjusts the attitude of said lenticular sheet based on a first tilt direction and a first tilt angle, which are determined first, and determines a second tilt direction and a second tilt angle after this rough adjustment, to execute a fine adjustment on the basis of these second tilt direction and second tilt angle, wherein the first tilt angle is determined from detection signals of those two of said detecting sensors which are spaced at a narrower distance, and the second tilt angle is determined from detection signals of those two of said detecting sensors which are spaced at a wider distance.