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# Preventing an Unauthorized Copy

You can print embedded pattern on paper to prevent them from being copied.

Unauthorized Copy Prevention

You can configure this machine to detect and reproduce anti-copy patterns or text embedded in a source document by a device using a copy prevention function. Detection occurs when the machine is copying, faxing, scanning, or storing a document in Document Server. If the machine detects an embedded anti-copy pattern or text, it will reproduce the pattern or text at visible resolution to discourage unauthorized copying. Note that this machine cannot embed reproducible anti-copy patterns or text.

Data Security for Copying

You can configure this machine to print over copies if it detects an anti-copy pattern or text embedded in a source document by a device using a copy prevention function. Detection occurs when the machine is copying, faxing, scanning, or storing a document in Document Server. If the machine detects an embedded anti-copy pattern or text, it will print over the copies of the source document with solid gray to discourage unauthorized copying. If you want the machine to print over copies of documents in which anti-copy patterns or text have been embedded, you must install the optional copy data security unit. Note that this machine cannot embed anti-copy patterns or text that will cause copies to be printed over. For details about data security for copying, see “Data Security for Copying”, Security Reference.

- See Security Reference.