Confirmation of the content of the images recorded on a CD-R or other storage medium is made easier. A data obtaining means obtains plural sets of image data recorded on a digital camera, etc. data storage medium, and an image processing means subjects the obtained image data to image processing and obtains processed image data. The processed image data is recorded onto a CD-R, etc. storage medium by an image recording means. A representative image selecting means selects images representative of the images represented by the image data. Then, thumbnail images of the selected representative images are attached to the surface of the storage medium disk by a representative image attaching means.