Patent ID: 8767267

Claim:
A method for using print means to apply coloring agents to an area of a print medium and to an overrun area, extending outward from and enclosing the print medium, so as to perform printing without margins at the edges of the print medium, comprising: a setup step of setting a single-sided printing mode, in which an image is printed by using the print means to apply coloring agents to one side of the print medium, or a double-sided printing mode, in which an image is printed by using the print means to apply coloring agents to one side and then to the other side of the print medium; an automatic generation step of generating image data of a greater size than of the print medium, the image data calculated based on the mode set, information concerning the size of the print medium and information concerning the width of the overrun area; and a color application step of using the print means to apply the coloring agents based on the thus generated image data, wherein, at the automatic generation step, when the single-sided printing mode is set, a width of an area that overruns a first edge, which is a leading edge of the print medium in the transportation direction, differs from a width of an area that overruns a second edge, which is a trailing edge of the print medium in the transportation direction, and when the double-sided printing mode is set, it is inhibited so that the width of the area that overruns the first edge is different from the width of the area that overruns the second edge, wherein, in the single-sided printing mode, the print medium is transported in the transportation direction in the state that the first edge is the leading edge, and the image is printed in the one side of the print medium by applying the coloring agent on the one side of the print medium, and wherein, when the one-sided printing mode is set, the width of the area that overruns the first edge is smaller than the width of the area that overruns the second edge.