| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the generation of the voids caused by non-treatment and the generation of the trouble caused by the adhesion of dust and reflection in a metal part of a different kind by constituting a special coating and covering mask pellicle frame of a mask pellicle material and a special coating and covering layer. SOLUTION: Shot blast treatment is applied to the inner surface of a mask pellicle frame 1 and a chemical-resistant special coating and covering layer 2 is applied to the entire treated surface of the mask pellicle frame 1 and subsequently heat-treated. The voids caused by non-treatment are not generated in a metal part of a different kind and, since the entire surface of the mask pellicle frame 1 is coated with a flaw-free chemical-resistant special coating and covering layer 2, the generation of the trouble caused by the adhesion of dust and reflection can be suppressed and stable photographic printing can be obtained.</p> |
