St Petersburg, Florida-based Danka Business Systems Plc, whose shares are quoted on the London International Stock Exchange, has bought for an undisclosed sum the US facsimile operations of Fujitsu Ltd – Japanese companies do occasionally throw in the towel on non-performing units: adding Fujitsu Imaging Systems will bring about $50m a year in extra sales to Danka; the unit has assets of $27m and will add 180 people, 10%, to Danka’s staff; the deal also includes the Dex brand name in the US and Canada and Danka plans to change the name of the unit to Dex Business Systems Inc.