Provided is an image processing apparatus including a print image generation section that generates print image data to be supplied to a printing device by executing a rasterizing process with a resolution for printing on print data, and an image density calculation section that executes the rasterizing process on the print data with a resolution lower than the resolution for printing and calculates image density information used in control of an image forming process in the printing device based on raster image data which is generated through the rasterizing process and has a resolution lower than the resolution for printing, wherein a difference in a processing speed between the print image generation section and the image density calculation section causes the image density information of a page prior to a page of the print image data being printed by the printing device to be supplied to the printing device.