1. An image processing apparatus comprising: an output processing section for executing an output process based on an image data obtained by reading a document image; a storage section in which the description of the output process to be executed by the output processing section is stored in relation with a stored image; and a controller capable of performing operations of: determining whether or not the document image is similar to the preliminary stored image based on the obtained image data; when determining that the image is similar to the stored image, reading out the description of the output process stored in relation with the stored image from said storage section; and controlling the output process to be executed by said output processing section in accordance with the read out description of the output process.