Document administration system and document administration method

A document administration system, comprising:

• an administration device to administer administration information of an image formed by an image forming device on a recording medium with erasable coloring agent in connection with discrimination information of the recording medium, wherein the image forming device includes:
• a first cassette to hold a reuse recording medium on which a discrimination information is formed;
• a reading device to read the discrimination information on the reuse recording medium conveyed from the first cassette;
• a decoloring device provided at the downstream from the reading device to decolor the discrimination information if a conveyed medium is the reuse recording medium;
• and
• an image forming device to form an image and an updated discrimination information with erasable coloring agent on the recording medium which the discrimination information is decolored.

A document administration method, comprising:

• administering administration information of an image formed on a recording medium with erasable coloring agent in connection with discrimination information of the recording medium;
• holding, in a first cassette, a reuse recording medium on which a discrimination information is formed;
• reading the discrimination information on the reuse recording medium conveyed from the first cassette;
• decoloring the discrimination information if a conveyed medium is the reuse recording medium;
• and
• forming an image and an updated discrimination information with erasable coloring agent on the recording medium which the discrimination information is decolored.