1984年4月13～14日,化工部第一胶片厂在保定召开了染料型黑白高速底片鉴定会。参加会议的有国家安全部、公安部八个单位,共计21名代表。染料型黑白高速底片是应公安部门所需而首创的一个新片种。它利用了彩色片制造技术,最终形成黑白染料影像,可在高感的情况下达到超微粒效果,成为我国目前较为理想的黑白高速底片。 1984 April 13 ~ 14, the Ministry of Chemical Industry’s first film factory held in Baoding dye black and white high-speed film identification meeting. Attending the meeting are the Ministry of National Security, Ministry of Public Security eight units, a total of 21 representatives. Dye type black and white high-speed film is the public security department needed to create a new type of film. It takes advantage of the color film manufacturing technology, the final formation of black and white dye images, in the case of high sense to achieve the effect of ultrafine particles, become China’s current ideal black and white high-speed film.