A new convenient and general one-step route for preparing azines by treating aromtic aldehydes and semicarbazide with anhydrous zinc chloride as catalyst is described.
The film has good photobehavior in the range from near ultraviolet to visible light, and it has high photosensitivity, high photoconductive gain and high linear illumination performance.
By applying a photopolymer resin instead of the thermopolymer resin as a bonding material,a rapid manufacturing processing of grinding wheel is realized on the basis of rapid prototyping.
Whereas with a Japanese print, which uses highly light sensitive colourants, that can be displayed for more like eight months per decade, or even less.