A row over the cost of laser printer consumables has resulted in Xerox taking an injunction out against Kyocera and forcing it to cover up part of its stand display. Xerox took out an injunction against Kyocera after the latter used comparative advertising suggesting its machines used less toner and were cheaper than its rivals' offerings. HP, Lexmark and Xerox were all compared with Kyocera and the Japanese printer manufacturer used the results of a PC Professionell comparative review to underline its claims. The Xerox injunction forced Kyocera to put a patch over its poster on the stand. It is understood Lexmark is also taking legal action against Kyocera. ®