Abstract: An image data processing device includes a plurality of image data treating units, a storing unit, and a setting unit. The plurality of image data treating units treats image data. The storing unit stores a plurality of conditions relating to a property of image data to be treated by each of the image data treating units. The setting unit is configured to set a condition in the storing unit to each of at least two of the image data treating units at a time. The conditions set to the at least two of the image data treating units is associated with one another so that the at least two of the image data treating units treat image data with same concept of processing.