Printing control apparatus, printing control method, and storage medium

A display control method of a printing control apparatus designed to instruct an image output apparatus to perform printing based on print data, the image output apparatus being configured to print and output an image and perform spot color printing by using a coloring material of a spot color, the printing control method comprising:

• a first obtaining step of obtaining a first preview image resolution for checking a printing layout;
• a second obtaining step of obtaining a printing resolution in the image output apparatus;
• a preview image comparing step of comparing a first preview image created by using the first preview image resolution and extracting pixels of a spot color printing portion where the spot color printing is carried out with a second preview image created by using the printing resolution and extracting the pixels of the spot color printing portion;
• and
• a preview image displaying step of displaying a spot color preview image for checking the spot color printing portion by using the first preview image resolution obtained in the first obtaining step, wherein
• in the preview image displaying step, a region of the spot color printing portion which is present in the second preview image and not present in the first preview image as a result of comparison in the preview image comparing step is displayed with a rectangular dashed line.

A display control method for instructing an image output apparatus to perform printing based on print data, the image output apparatus being configured to perform spot color printing by using a coloring material of a spot color, the printing control method comprising:

• a first obtaining step of obtaining a first preview image resolution for checking a printing layout;
• a second obtaining step of obtaining a second preview image resolution for checking a spot color printing portion where the spot color printing is carried out;
• a preview image displaying step of displaying a spot color preview image for checking the spot color printing portion by using a resolution based on the first preview image resolution obtained in the first obtaining step and the second preview image resolution obtained in the second obtaining step,
• a spot color printed pixel display determining step of determining whether or not all printed pixels corresponding to the spot color printing portion are displayed in a preview in a case of receiving an instruction to print the spot color preview image for checking the spot color printing portion;
• and
• a warning display step of displaying a warning in a case where all the printed pixels are determined to be not displayed in the preview in the spot color printed pixel display determining step.