The Croydon-based digital print and production specialist installed the new machines during the first week of July. The move brings its iGen press tally to nine.

RDI has cited an increased level of activity from existing clients and a number of new contract wins for the need to grow its digital print capacity.

David Laybourne, managing director at RDI, said the rise in the level of work the firm carried out for sectors such as the financial markets, coupled with increased adhoc work, triggered the need to invest.

He said: "In addition to improving print quality, the increase in print cycling speeds and ripping rates has led to improved productivity.

"This has allowed us to turn around jobs even faster for our customers, providing us with a real competitive advantage."

RDI’s new EXP presses are upgraded versions of its iGen4 colour digital printing press that offer a larger sheet size and integration with Adobe PDF print engine.

The EXP model features a sheet size of 364x660mm, which is the largest in its class. The machine also boasts automated web-to-finish software that enables users to create a finished document without manual set-up and intervention.

The company is on course to reach £17.5m turnover in this financial year. Sales at the firm were up 35% during the first half of the year, on the back of the printer’s pre-tax profit of £776,930 for the year to 31 December 2010.

According to Laybourne, four of the company’s older iGen machines will be retained for disaster recovery purposes as the 132-staff business targets further growth in 2011.

"We started the year with 126 staff and will be looking to add several more before the year is out," he added.