An image saving system for reading and saving an image, including an image storage device, and a scanner device connected to the image storage device via a network, in which the scanner device includes a read unit which reads an image and produces image data, a control point unit which acts as a control point in network plug-and-play, and a device unit, the device unit notifies the control point unit that the device unit is a storage device in the network plug and play, and the device unit sends the image data with a predetermined reserved file name to the image storage device and saves the image data with the predetermined reserved file name to the image storage device when the device unit receives a file transmission request which designates the predetermined reserved file and is sent in response to a user's instruction which commands the device unit to save the image data obtained by allowing the scanner device to read the image mounted on the scanner device to the image storage device.