| 摘要 |
According to one embodiment, a document administration system includes an administration unit to administer administration information of an image formed on a recording medium in connection with discrimination information of the recording medium and a decoloring device. The decoloring device includes a reading unit to read a discrimination information image based on the discrimination information, the discrimination information image being formed on the recording medium with erasable coloring agent, a decoloring unit to decolor the image formed on the recording medium with erasable coloring agent after the reading unit has read the discrimination information image, and a printer to print the discrimination information image in which at least the number of times of decoloring has been updated based on the discrimination information image read by the reading unit on the recording medium after decoloring. |
