| 摘要 |
It is an object of the present invention to provide a method for efficiently producing a lenticular lens providing an excellent contrast. The aforesaid object is achieved by a method for producing a lenticular lens sheet 2, comprising a step of, on a lenticular lens sheet substrate 10 having a lens group made up of lenticular lenses 11 arranged in parallel to one another on one side of the light transmissive substrate, and protrusions 4 each made up of a top and slopes at non-condensing portions of the lenticular lenses 11 on the other side, rotating a print roll 5 coated with an uncured light absorbing material 8, relatively moving the lenticular lens sheet substrate 10 with respect to the axis of the print roll while bringing the print roll 5 in contact with the tops of the protrusions 4, and thereby transferring the uncured light absorbing material 8 to the protrusions 4 to produce a lenticular lens sheet 2 including a layer 9 consisting of a light absorbing material on the tops of the protrusions 4 and at least a part of the slopes of the protrusions 4, characterized in that the direction of relative movement of the lenticular lens sheet substrate 10 with respect to the axis of the print roll is generally perpendicular to the axis of the print roll, and generally parallel with the direction of the length of the lenticular lens, and the direction of rotation of the print roll and the direction of movement of the lenticular lens sheet substrate with respect to the axis of the print roll are equal to each other, and the linear speed of the print roll outer periphery differs from the moving speed of the lenticular lens sheet substrate with respect to the axis of the print roll by a speed difference of within ±5%. |
