The film production of the photoplotter is a relatively complicated process, which mainly includes two steps of photoplotting and developing, in which development is the most critical step. Light painting The light painting of the photoplotter is actually a process of film exposure. Usually, after the film is exposed, the salt containing silver metal will restore the center of the silver. Although the film is reduced, the film is basically seen on the film. Generally, such an image is called a latent image. Commonly used film exposure machines are: flat laser photoplotter, inner barrel laser photoplotter, and outer barrel laser photoplotter. 2. Development The exposed film, the silver center on the film is under illumination, the silver salt inside is reduced to silver, the color is obviously black, the temperature of the developing solution affects the development speed of the photoplotter, and usually the higher the ambient temperature, the light The developing speed of the plotter is faster. Therefore, the most suitable development temperature is 18 ° C ~ 25 ° C. The main components added in the developing solution are the developer, the protective agent, the accelerator and the inhibitor. The effects of these agents are as follows: 1. Developer: The role of the developer is to reduce the easily exposed silver salt to silver, so in general, the developer is a reducing agent. 2. Protecting agent: The function of the protective agent is mainly to prevent the developing solution from being oxidized, and the conventional protective agent is sodium sulfite. 3. Accelerator: The accelerator contains alkali. Its main purpose is to speed up the development of the photoplotter. The accelerator used is sodium hydroxide, which is a strong accelerator. 5. Inhibitor: suppresses the silver salt which is not exposed, so that it is not reduced to silver, and also prevents the phenomenon that the unexposed portion is fogged when it is developed by the photoplotter. Article source address: http:// Jansport Backpack,Leather Backpack,Waterproof Backpack,Black Backpack Ningbo Fineweather International Trade Co., Ltd. , https://www.fwsbag.com