1. An image processing apparatus comprising: printing means for printing an original sheet containing (1) a handwritten area in which a handwritten image is to be combined with a desired image and to be handwritten by a user, and (2) a code in which identification information identifying the desired image or additional information associated with the desired image is written; reading means for reading said original sheet; analyzing means for analyzing said code; and combining means for combining data corresponding to the desired image and data corresponding to the handwritten image read by said reading means based on the result of analyzing said code by said analyzing means.