1. An information input device comprising: an image inputting section which inputs images on each of documents; a character recognition section which subjects, to character recognition processing, the images input by the image inputting section; a display section which displays various types of instruction buttons; a management section which manages set contents corresponding to each of the instruction buttons displayed on the display section, the set contents including the destination of registration of the images input by the image inputting section, the contents of processing executed on the images by the character recognition section, and a range of processing executed by the character recognition section; and a control section which executes control, when one of the instruction buttons has been designated, on the basis of the set contents corresponding to said one of the instruction buttons and managed by the management section, the control section controlling the image inputting section so as to input the images, controlling the character recognition section so as to execute character recognition processing on those of the input images which are contained within the range of processing, and simultaneously registering the input images and a result of character recognition processing executed on the input images contained within the range of processing.