Document management device and document management method

摘要

The document management device is for managing a document circulated to a reader in accordance with a circulation tree and additional information added to the document by the reader. The circulation tree indicates the circulation order of plural readers. The device includes: document circulation unit for enabling the n^th (n is an integer not less than 2) reader to read the n-1^th generation document data cumulatively including the 1^st additional information to the n-1^th additional information added, by the first reader to the n-1^th reader respectively, to the 0^th generation document data readable by the first reader of the circulation tree; recognition unit for recognizing the n^th additional information added by the n^th reader as electronic data; and additional information management unit for managing the n^th additional information by associating it with the 0^th generation document data.