Flexible specifying is enabled in the event of using data created with a general application to specify printing by layering a color toner image and optional special color toner image. A printer driver specifies pages to perform printing using a clear toner out of the page group received from the application, generates a job including data for layering as to the same face on the same sheet and printing a clear toner page which is a specified page, and a color toner page which is a page not specified for clear toner in the page group, and sends this to the printer.