Riso's latest cost-effective colour inkjet device, the ComColor, will be launched to the European market at Ipex in May.

Riso said the machine's maximum speed of 150 A4ppm, made it the "world's fastest cut-sheet inkjet printer" and said the ComColor range is designed to fill a gap between high-end production devices and multi-function office-type printers not currently being met by other manufacturers.

UK product manager Mike Murphy said units were already being field-tested here. "We've had models at selected customers since late 2009 and feedback has been extremely positive."

Murphy described the ComColor as "an evolution" of the popular HC range that PrintWeek named as one of the stars of Drupa 2004.

Although five models are available, the focus in the UK will be on the ComColor 3010 (90 A4ppm), 7050 (120ppm) and top-of-the-range 9050 (150ppm).

It can handle a maximum sheet size of 340x550mm.

The top speed of up to 150ppm applies to both simplex and duplex printing, and it has a monthly duty cycle of 500,000. Other advances include handling weightier stocks of up to 210gsm.

The estimated cost per print, for full colour A4, is just under 2p, although Murphy stated "it could be lower than that, depending upon volume".

Riso is also promoting its environmental advantages over toner-based printers due to the cold fusion process and absence of emissions. It uses a fixed array of piezo inkjet heads.

The firm launched the ComColor 9050 with a list price of $45,995.