Reading device and communication system

1. A reading device, comprising:

a scanner configured to read a document and to generate image data representing the read document;

a storage device configured to store image data downloaded from a server; and

a processor configured to provide:

an uploading unit configured to upload the image data read by the scanner to the server on a network;

a storage time limit setting unit configured to set a storage time limit within which the image data is stored on the server;

a judgment unit configured to judge whether the storage time limit has expired with respect to the image data uploaded on the server;

a data management unit configured to:

download, from the server, the image data for which the judgment unit judges that the storage time limit has expired;

store the downloaded image data in the storage device; and

delete, from the server, the image data corresponding to the downloaded image data

a re-upload unit configured to re-upload, to the server, the downloaded image data designated from data stored in the storage device by a user command inputted by a user; and

a storage time limit re-setting unit configured to set a storage time limit within which the downloaded image data is stored on the server for the downloaded image data to be re-uploaded by the re-upload unit, wherein the judgment unit is configured to judge whether the storage time limit set by the storage time setting unit has expired with respect to the image data uploaded to the server by the uploading unit, and to judge whether the storage time limit set by the storage time re-setting unit has expired with respect to the downloaded image data re-uploaded to the server by the re-upload unit.

2. The reading device according to claim 1 , wherein the processor is further configured to provide:

a data deletion unit configured to delete the downloaded image data from the storage device after a predetermined time has elapsed from a time when the downloaded image data is stored in the storage device.

3. The reading device according to claim 2 , wherein the storage device is further configured to store the predetermined time, the predetermined time being defined for each of a plurality of types of image data,

wherein the data deletion unit is configured to:

judge a type of the downloaded image data stored in the storage device; and

delete the downloaded image data from the storage device after the predetermined time corresponding to the type of the downloaded image data to be deleted has elapsed from a time when the downloaded image data is stored in the storage device.

4. The reading device according to claim 1 ,

wherein the processor is further configured to provide:

a notification target setting unit configured to set a notification target to which a notification indicating deletion of the image data corresponding to the downloaded image data from the server is sent, with respect to the image data to be uploaded by the upload unit; and

a notifying unit configured, when the image data corresponding to the downloaded image data for which the notification target has been set is deleted from the server by the data management unit, to send the notification to the notification target set for the image data deleted from the server.

5. The reading device according to claim 4 ,

wherein the re-upload unit is configured to re-upload, to the server, the downloaded image data designated from data stored in the storage device in accordance with the user command received from the notification target.

6. The reading device according to claim 5 , wherein the storage time limit re-setting unit is configured to set the storage time limit in accordance with a user command received from the notification target.

7. The reading device according to claim 1 , wherein the storage time limit setting unit is configured to set the storage time limit in accordance with a user command inputted from a user.

8. The reading device according to claim 1 , wherein the scanner is configured to read the document and generate the image data in accordance with a user command inputted externally by a user.

9. A communication system, comprising:

a server; and

a reading device according to claim 1 ,

wherein the server and the reading device are connected to each other via a network.