Image processing apparatus and method controlling the amount of transparent ink for recording

1. An image processing apparatus comprising:

a calculation unit configured to calculate an amount of a first coloring material in an area including a plurality of pixels;

a determination unit configured to determine an allowable amount of a second coloring material in the area on the basis of the amount of the first coloring material, calculated by the calculation unit, and a limit of the total amount of all the coloring material in the area;

a control unit configured to control an amount of the second coloring material in the area so as not to exceed the allowable amount of the second coloring material; and

a unit configured to display a user interface where either a first mode or a second mode is selected,

wherein printing and fixing are performed with the first coloring material on a print sheet and then, printing and fixing are performed with the second coloring material on the first coloring material on the print sheet if the first mode is selected, and the calculation unit, the determination unit, and the control unit are caused to operate if the second mode is selected.

2. The image processing apparatus according to claim 1 , wherein the first mode gives priority to an effect of an image and the second mode gives priority to a print speed.

3. The image processing apparatus according to claim 1 , wherein the first coloring material is at least one of cyan, magenta, yellow, and black coloring material, and

wherein the second coloring material is a transparent coloring material.

4. An image processing method comprising the steps of:

calculating an amount of a first coloring material in an area including a plurality of pixels;

determining an allowable amount of a second coloring material in the area on the basis of the calculated amount of the first coloring material and a limit of the total amount of all the coloring material in the area; and

controlling an amount of the second coloring material in the area so as not to exceed the allowable amount of the second coloring material,

wherein a user interface where either a first mode or a second mode is selected is displayed, and

wherein printing and fixing are performed with the first coloring material on a print sheet and then, printing and fixing are performed with the second coloring material on the first coloring material on the print sheet if the first mode is selected, and the calculating step, the determining step, and the controlling step are performed if the second mode is selected.

5. The image processing method according to claim 4 , wherein the first mode gives priority to an effect of an image and the second mode gives priority to a print speed.

6. The image processing method according to claim 4 , wherein the first coloring material is at least one of cyan, magenta, yellow, and black coloring material, and

wherein the second coloring material is a transparent coloring material.

7. A non-transitory computer-readable storage medium having a program stored therein, the program including program code comprising the steps of:

calculating an amount of a first coloring material in an area including a plurality of pixels;

determining an allowable amount of a second coloring material in the area on the basis of the calculated amount of the first coloring material and a limit of the total amount of all the coloring material in the area; and

controlling an amount of the second coloring material in the area so as not to exceed the allowable amount of the second coloring material,

wherein a user interface where either a first mode or a second mode is selected is displayed, and

wherein printing and fixing are performed with the first coloring material on a print sheet and then, printing and fixing are performed with the second coloring material on the first coloring material on the print sheet if the first mode is selected, and the calculating step, the determining step, and the controlling step are performed if the second mode is selected.