"Having been a customer of OfficeTiger's for several years, we are pleased to announce this acquisition as the next logical step in building our global outsourcing business," said RR Donnelley chief executive Mark Angelson.

Office Tiger has its headquarters in New York, with sales offices in London, India and Sri Lanka.

The document outsourcing specialist covers markets that include financial services, publishing and healthcare.

"This is a good fit and a compelling strategic opportunity for both companies," said OfficeTiger co-chief executive Randolf Altschuler.

The move follows RR Donnelley's acquisition of print management firm Astron last June for 520m.