Patent ID: 8899705

Claim:
A decoloring apparatus comprising: a sheet conveying unit configured to convey a sheet; a decoloring unit configured to decolor an image formed with a decolorable colorant on the sheet conveyed by the sheet conveying unit; a reading unit configured to, after the decoloring unit decolors the image, read the sheet conveyed by the sheet conveying unit and acquire an image; a controlling unit configured to determine whether or not the sheet is reusable based on the image which the reading unit acquired; a storing unit configured to store a first number of sheets which the controlling unit determines whether or not they are reusable, a second number of sheets determined to be reusable, and a third number of sheets determined to be unreusable; and a display control unit configured to cause a display unit to display individually information indicating the second number of sheets, the third number of sheets and the reuse ratio of the second number of sheets to the first number of sheets.