Abstract: The film in the screen printing and image transfer process has a very important role. Film is used as a master black film, diazo film copy made as a material, Diazo film itself is very sensitive to external environment. Therefore, the transfer of the graphics have greatly affected. From the production experience, often short circuit, open circuit, developing no net, the line of young, poor and so often with the film exposure related. For the above anomalies encountered on film caused by the film production process to identify anomalies or errors in the process of preservation, master Diazo film performance parameters and composition. Way, and prevent abnormal film.
Key words: diazo film brown film imaging is not a net printer circuit board
