The 50,000-run, 312pp job was completed in just five days.
Paul Rowland, general manager of Customer Services at CPI Mackays, said: "It seemed an impossible task, but it was our chance to show what CPI Mackays could achieve with our new customer service strategy."
CPI Mackays completes 50,000 run of Michael Jackson biography
CPI Mackays has completed the first print run of Ian Halperin's Michael Jackson biography Unmasked: The Final Years of Michael Jackson.
