An image scanning system comprising an image scanner and a terminal, wherein the image scanner comprises an image storing unit to store the image data; a terminal designation unit to designate the terminal as a transmission target; a terminal storing unit to record correspondence data to associate the image data with the terminal; an information notification unit to transmit a notification of information concerning image data to the designated terminal; a request receiving unit to receive a request for image data; and an image transmission unit to transmit the image data associated with the designated terminal for which the request has been received, and the terminal comprises: an indication unit to make an indication in response to receipt of the notification; and a request transmission unit to transmit the request to the image scanner when a user operation for requesting image data is received.