16. The system of claim 14 , wherein the capturing component, archiving component, and matching component are maintained at a location remote from the image output device.
14. A computer implemented system for document image log acquisition and retrieval comprising: a capturing component which automatically acquires an image log comprising image data and an associated record for every input document being processed by a plurality of image output devices, the image output devices comprising printers and the input document processing including printing; an archiving component configured for receiving the acquired image data and associated records from the capturing component and archiving the image data and records in an associated archive until processed by a matching system; the matching system which, for each of the acquired image logs: automatically identifies any similar documents, including identifying a set of text elements extracted from text content of the image data, and from these text elements, identifies a subset of the text elements as keywords, the keywords including text elements which have a frequency of occurrence in the text content which is different from previously computed term frequencies of these text elements, and based on the keywords, performs a search among previously acquired image logs archived in a computer-readable storage medium and accessible electronic documents stored in at least one other document repository to retrieve similar documents; and where a similar document is retrieved, computes a measure of similarity between the retrieved similar document and the input document; and based on the computed similarity, determines whether the retrieved document is a matching document and, if so, stores a job log which includes, for the input document, information from the record of the image log and a location of the retrieved document; whereby either the retrieved document or the input document is identified for being automatically or manually archived in the computer-readable storage medium, except where the job log indicates that the location of the retrieved document is a public document source, neither a retrieved nor an input document need be identified for archiving; where the retrieved document has access controls, including a reference to the access controls of the retrieved document in the stored job log and at least one of: a) storing user information from the record of the image log in the stored job log, whereby a leak of an access controlled document is attributable to the user which caused an input document to be processed by the image output device; and b) blocking processing of the input document by the image output device where the access controls of the retrieved matching document indicate that such processing should be blocked; and a processor which implements the capturing component, archiving component and the matching system.