Berlusconi's latest salvo came 48 hours before the Senate is due to vote on whether to kick him out of Parliament because of the conviction.
The 77-year-old media mogul has said his removal from parliament would amount to a government coup, even though he has no role in the government.
Berlusconi is to elaborate on the documents later today, an event that has the air of a desperate performance by the master politician aimed at fending off the expulsion vote.