什么是静电斑在显影后的底片上,有时可出现如照片1那样的枝状斑,或者由中心浓逐渐向周围扩散的园形斑。这种斑有时作为一种灰雾密度表现出来,这就叫作静电斑。这是由于带静电的胶片和带有相反电荷静电的物体接触后,放电,发光,感光后使胶片上产生灰雾。 What is an electrostatic spot On the developed backsheet, dew-like spots such as those shown in the photograph 1 may sometimes appear, or circular spots gradually diffuse from the center to the periphery. This patch is sometimes shown as a density of fog, which is called electrostatic spots. This is because the film with electrostatic charge and electrostatic charge opposite the contact, discharge, light, the film after the fog on the film.