Printing apparatus, lens sheet, and printing method

A printing apparatus for performing printing on a lens sheet on which a plurality of lenses is arranged with a longitude direction thereof in one direction, and a print image corresponding to a plurality of parallaxes is formed on one surface thereof, wherein a test pattern configured to provide different visibility to a user's left and right eyes is formed on any portion on the lens sheet, with a longitudinal direction thereof being set in a direction crossing the one direction, the printing apparatus comprising:

• position correction amount-calculation means for calculating a position correction amount for forming the print image on the lens sheet based on the visibility of the test pattern;
• and
• print execution means for executing printing in order to form the print image on the bases of the combined image data created from a plurality of original image data and the position correction amount so that the position correction amount is reflected in the print image,
• wherein the test pattern is configured such that a plurality of color areas with different colors is arranged in a predetermined order in one of the lenses, and
• wherein the position correction amount-calculation means includes a position correction amount table in which the visibility of colors measured in advance and the position correction amount are stored in a correlated manner, and calculates the position correction amount based on the position correction amount table.

A lens sheet comprising:

• a first print area on which a plurality of lenses is arranged with a longitudinal direction thereof in one direction, and a print image corresponding to a plurality of parallaxes is formed on one surface thereof;
• a second print area on which the plurality of lenses is arranged to be continuous to the first print area, and a test pattern configured to provide different visibility to a user's left and right eyes is formed;
• and
• a tear-off line provided along the boundary of the first print area and the second print area so as to tear off the second print area from the first print area,
• wherein identification means for enabling the identification of the direction of the feeding of the lens sheet is formed in the first print area of the second print area.

A printing method for performing printing using a printer on a lens sheet on which a plurality of lenses is arranged with a longitudinal direction thereof in one direction, and a print image corresponding to a plurality of parallaxes is formed on one surface thereof, wherein a test pattern configured to provide different visibility to a user's left and right eyes is formed on a predetermined portion of the lens sheet, with a longitudinal direction thereof in a direction crossing the one direction, the printing method comprising:

• calculating a position correction amount for forming the print image on the lens sheet based on the visibility of the test pattern;
• creating combined image data in order to forming the print image based on a plurality of original image data;
• executing printing in order to form the print image based on the combined image data and the position correction amount so that the position correction amount is reflected in the print image;
• creating the combined image data based on the plurality of original image data;
• and
• performing the adding or removing of pixels in the combined image data by the amount corresponding to the calculated position correction amount.