Printing apparatus and print control method

1. A printing apparatus configured to heat a sheet-shaped print medium in which a plurality of color development layers that develop colors in accordance with heating are stacked in correspondence with a plurality of colors so as to form an image on the print medium by causing a desired color development layer in the plurality of color development layers to independently develop the color, the apparatus comprising:

a printhead including a plurality of heating elements;

an input unit configured to receive, from a host apparatus, a print job including print data and information for instructing to cut the print medium of a printed image or not to cut;

a first generation unit configured to, when the print job received by the input unit instructs to cut the print medium of the printed image, generate, from the print data, image data for forming an image on the print medium and cut information for specifying a position to cut the image from the print medium;

a second generating unit configured to generate a first pulse for driving the plurality of heating elements of the printhead based on the image data generated by the first generation unit, and generate a second pulse for driving the plurality of heating elements of the printhead based on the cut information generated by the first generation unit; and

a drive unit configured to drive the plurality of heating elements by the first pulse generated by the second generating unit to form an image on the print medium, and drive the plurality of heating elements by the second pulse generated by the second generating unit to apply heat beyond a melting point of the print medium to melt the print medium so as to cut the print medium on which the image is formed.

2. The printing apparatus according to claim 1 , wherein in the print medium, a first color development layer configured to develop yellow (Y), a second color development layer configured to develop magenta (M), a third color development layer configured to develop cyan (C), and a base material are formed sequentially from a side where the plurality of heating elements of the printhead contact, and

a pulse width of the first pulse is longest for the first color development layer and becomes short in an order of the second color development layer and the third color development layer.

3. The printing apparatus according to claim 2 , wherein

an adhesive layer is provided on a lower side of the base material,

a peeling layer is further provided on a lower side, and

the print medium is molten up to the base material by driving the plurality of heating elements of the printhead by the second pulse.

4. The printing apparatus according to claim 2 , wherein the base material is a lowermost layer of the print medium, and

the drive unit partially cuts the print medium up to the base material by driving the plurality of heating elements of the printhead by the second pulse.

5. The printing apparatus according to claim 1 , wherein a pulse width of the second pulse is longer than a pulse width of the first pulse.

6. The printing apparatus according to claim 1 , wherein the drive unit drives the plurality of heating elements of the printhead by the first pulse and then drives the plurality of heating elements of the printhead by the second pulse.

7. The printing apparatus according to claim 1 , wherein the drive unit generates a pulse in which the first pulse and the second pulse are superimposed.

8. The printing apparatus according to claim 1 , wherein the drive unit modulates the first pulse used to form an image in a region adjacent to a region where the print medium is to be cut by the second pulse.

9. The printing apparatus according to claim 8 , wherein a pixel included in the adjacent region is changed to a black pixel by the modulation.

10. The printing apparatus according to claim 8 , wherein in the modulation, a density of color development of a pixel included in the adjacent region is decreased by a color development amount caused by heating to the region where the print medium is to be cut by the second pulse.

11. The printing apparatus according to claim 1 , wherein the host apparatus is included in the printing apparatus.

12. A print control method of a printing apparatus configured to heat, by a printhead including a plurality of heating elements, a sheet-shaped print medium in which a plurality of color development layers that develop colors in accordance with heating are stacked in correspondence with a plurality of colors so as to form an image on the print medium by causing a desired color development layer of the plurality of color development layers to independently develop the color, the method comprising:

receiving, from a host apparatus, a print job including print data and information for instructing to cut the print medium of a printed image or not to cut;

when the print job input in the inputting instructs to cut the print medium of the printed image, generating, from the print data, image data for forming an image on the print medium and cut information for specifying a position to cut the image from the print medium;

generating a first pulse for driving the plurality of heating elements of the printhead based on the image data generated in the generating the image data and the cut information, and generating a second pulse for driving the plurality of heating elements of the printhead based on the cut information generated in the generating the image data and the cut information; and

driving the plurality of heating elements by the first pulse generated in the generating the first pulse and the second pulse to form an image on the print medium, and driving the plurality of heating elements by the second pulse generated in the generating the first pulse and the second pulse to apply heat beyond a melting point of the print medium to melt the print medium so as to cut the print medium on which the image is formed.