Taking a radical innovation of Chinese typesetting system as a typical case,we found that local market resource is a strong power to promote radical innovation in China,in the same time,grasping windows of oppor- tunity opened by new technology is also very important condition for such kind of innovation.

Application of dynamic moire in laser typesetter with scan deflector;

In the laser typesetter, the coordinates of the imaging laser points are determined by synchronous movement of row and column scanning motors.

With the development of the modern printing industry, the laser typesetter is applied widely as the pivotal export equipment of the modern printing technology.

After the laser imagesetter was linearized,the different dots and their different screen line number were analyzed.