1. An image processing apparatus, comprising: a determining unit that determines image types in an image data corresponding to an image; an image area separation unit that separates the image into areas corresponding to each of the image types and generates area data corresponding to each of the areas; a memory which stores the image data and the area data in a correlated manner; an image processing unit that subjects a specific image data stored in the memory to one or more of gamma correction, color conversion, and gradation processing based on processing conditions set for the area data correlated with the specific image data; a conversion unit that converts a format of the image data processed by the image processing unit into a general-purpose format; and a transmission unit that sends the image data in the general-purpose format to an external device.