Main features of parallel exposure machines
This type of equipment has only one lamp, the exposure table is divided into upper and lower mirrors, using the principle of light refraction. When the two sides are exposed at the same time, the exposure of the upper and lower lights is separated. First of all, the first exposure, a mirror reflects light to the mirror above the table, and then refracted to the exposure table. When the light is off the lamp, the light is directly directed to the mirror below and then refracted to the table, so when using the character exposure machine for exposure, the energy on the lamp will be greater than the energy off the lamp, exposure and series will be the same.
The main characteristics of astigmatism exposure machine
The device illuminates the light directly when exposed, just like a light bulb, the upper and lower lights are exposed simultaneously on both sides.
