1. An image log management device comprising: a processor; a correspondence relationship information storing component, executed on the processor, that stores correspondence relationship information between an identifier of an input document subject to image forming processing, an identifier of one or more output documents resulting from the image forming processing of the input document, and an identifier of image log data of the one or more output documents; an image log data storage component that stores the image log data of the one or more output documents; an input component that inputs document disposal information including an identifier of a disposal document that has been disposed of; a document disposal information component that, based on the document disposal information, changes a status of a document corresponding to the disposal document to disposal-complete; and a deletion component that, based on the status of the document corresponding to the document disposal information and based on one or more identifiers of input or output documents stored in the correspondence relationship information, selects image log data requiring deletion and executes deletion processing thereon, wherein when all of the one or more output documents, processed by the image forming processing with the disposal document as the input document, have their respective status changed to disposal-complete, the deletion component deletes the image log data of the one or more output documents.
1. An image log management device comprising: a processor; a correspondence relationship information storing component, executed on the processor, that stores correspondence relationship information between an identifier of an input document subject to image forming processing, an identifier of one or more output documents resulting from the image forming processing of the input document, and an identifier of image log data of the one or more output documents; an image log data storage component that stores the image log data of the one or more output documents; an input component that inputs document disposal information including an identifier of a disposal document that has been disposed of; a document disposal information component that, based on the document disposal information, changes a status of a document corresponding to the disposal document to disposal-complete; and a deletion component that, based on the status of the document corresponding to the document disposal information and based on one or more identifiers of input or output documents stored in the correspondence relationship information, selects image log data requiring deletion and executes deletion processing thereon, wherein when all of the one or more output documents, processed by the image forming processing with the disposal document as the input document, have their respective status changed to disposal-complete, the deletion component deletes the image log data of the one or more output documents. 4. The image log management device of claim 1 , wherein when the image log data has been deleted the deletion component deletes the correspondence relationship information related to the deleted image log data.