Video images of each frame of a roll of film are stored in a first memory when printing the frames on a photographic material. Thereafter, the images are read out from the first memory for image processing and written in a designated area of a second memory. Video signals for a number N of frames are written in memory area of the second memory designated for the respective frames to provide composite video signals and then are read out to be printed as a composite image on a photographic material as an index print. When printing each frame of the roll of film, a first mirror is removably inserted into a printing path to project an image of the frame to a TV camera in order to provide three color video signals. Video signals for several frames are electrically composed to provide composite video signals which are printed as a single composed image having reduced images inlaid in a matrix on a photographic paper.