Lewis Fix, vice-president of brand management and sustainable product development at Domtar, which is one of the largest companies in its sector, said it had joined in order to help achieve two of Two Sides' primary goals.

"We want to highlight that paper is environmentally sound and also encourage people to print responsibly," he said.

"Domtar is at the forefront of the responsible use of paper and we collaborate with several environmental organisations to encourage environmentally sound, sustainable forestry practices, high levels of recycling and the use of renewable energy at our manufacturing facilities."

Martyn Eustace, Two Sides director, added that Domtar had invested heavily in reducing its environmental impact.

He said: "The company seeks to explode the myths that lead people to think that using paper is damaging to the environment.

"I am sure we will be useful allies in the effort to re-educate end-users, helping them to recognise that paper is actually the sustainable way to communicate."

Last month, Two Sides announced that KBA UK had become the first printing press manufacturer to join the campaign.

Two Sides was created in 2008 and now has 300 members from the forestry, pulp, paper, inks and chemicals, pre-press, press, finishing, publishing and printing industries.

Domtar Corporation has two business segments, papers and merchanting. In 2009, it had a turnover of $5.5bn (£3.6bn).