The green printing has been a global development trend in traditional printing industry, and “green” technology-intensive enterprises will obtain development opportunities in the future. In this article, the patent layout of key technologies of green printing industry was analyzed to reveal the enterprises’ technological competitive situations and patent strategies in Japanese, US, Chinese and European green printing markets respectively.

The citation of 2008-2013 China's invention has been extracted and analyzed from the China patent citation database. The region technology impact was evaluated according to the cited patent. In particular, the performance of region and the market main body in the key core technology were analyzed based on the highly cited patent. According to the citing patent, the science-technology linkages and the position of the regional innovation in technology diffusion has been reviewed.