| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus and a method for electrostatic coating wherein the efficiency of transfer of coating drops to the substrate is high, and the coating drops are not adhered to, e.g. the apparatus and to provide a method for matting an original lithographic plate. SOLUTION: There are provided an apparatus for electrostatic coating provided with a rotary atomizing head (2A) which is in the form of a bell widening toward one direction and is capable of rotating around the axial line, atomizes a coating material to form coating drops, charges the coating drops positively or negatively in relation to the substrate to which the coating drops are adhered, and releases the coating drops toward the substrate from the large-diameter opening end to form an atomized stream; a drive (4) that rotates the head (2A); and an auxiliary electrode (6) being situated in position more upstream of the atomized stream than that of the large-diameter side opening, and has a voltage of polarity same as that of the coating drops; a method for electrostatic coating; and a method for matting an original lithographic plate by using the electrostatic coating apparatus.
|
