An image processing system including an image processing device with at least one of a function to scan an image and generate image data representing the image and a function to print an image represented by image data, and a service providing device adapted to provide a service concerning at least one of the image data being generated by the function provided to the image processing device and the image data representing the image to be printed in response to a request from the image processing device is provided. The image processing device includes a parameter specific unit that is adapted to obtain parameters for receiving the service from the service providing device, a service request unit that is adapted to request the service providing device to provide the service, and a function implementation unit that is adapted to implement the function of the image processing device based on the parameters obtained from the parameter specific unit.