To copy even a small-sized original such as a name card original without missing information.

The composite printer is provided with an image read section 1 that reads an image on an original of various sizes, a storage section 2 that stores the image read by the image read section 1, and a print section 5 that reads the image stored in the storage section 2 and prints it out on paper, and also with a line number detection section 3 that detects a line number from top to bottom of an original scanned by the image read section, a discrimination section 4 that discriminates the size of the original based on the line number detected by the line number detection section 3 and the print section 5 adjusts the print range depending on the size of the original discriminated by the discrimination section 4.