Patent ID: 7797619

Claim:
A task analysis system comprising: a document display that displays a document image and retains unit identification information identifying the document display itself; and a task management apparatus that manages a task, the task management apparatus comprising: a task associating unit that previously relates a task with a unit identification information of a carry out document display used to carry out the task; an acquisition unit that acquires the unit identification information and document identification information of a document displayed on the document display, the document identification information identifying the document; and a task analysis unit that determines the document used to carry out the task based on the document identification information, the document identification information being acquired from the unit identification information, the unit identification information being related with the task in the task associating unit, wherein the document display comprises an electronic paper comprising: a display that holds display of a document image in a substantially no-power supply state; and a memory that stores the unit identification information, and the task analysis system comprises an electronic paper printer performing processing for the electronic paper, the electronic paper printer comprising: a write unit that displays a document image on the display of the electronic paper; a read unit that retrieves the unit identification information from the memory of the electronic paper; and a notification unit that notifies the unit identification information and document identification information of the document to the task management apparatus in accordance with writing a document image to the display of the electronic paper, the unit identification information being read from the memory of the electronic paper, and the unit identification information and the document identification information acquired by the acquisition unit comprise the unit identification information and the document identification information sent by the notification unit.