| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing an ionic flow electrostatic recording head that is equipped with an insulating material layer formed in minuteness of surface roughness without unevenness in thickness and is capable of forming highly precise images with out irregularity in generating quantity of ion. SOLUTION: In a method for manufacturing an ionic flow electrostatic recording head that is equipped with a plurality of first electrodes 12 provided in spreading at the surface of an insulating substrate 11, a plurality of second electrodes 14 laid in crossing over the first electrodes with a dielectric layer 13 interposed in between and the third electrodes laid on the second electrode with an insulating layer 15 interposed in between, insulating paste made of additive heat-resistant polyimide resin in viscosity ranging from 5,000 cps to 1,500,000 cps is applied in both ways on the second electrode 14 and the dielectric layer 13 with a squeegee 21 and a metal mask 22 used with the surface temperature of the squeegee set at 150 deg.C, the temperature lower than the boilding point (202 deg.C) of solvent contained, in forward squeezing while the surface temperature of the squeegee being set at 160 deg.C in return squeezing, and thereby an insulating paste layer 18 with a thickness ranging from 30μm to 150μm is formed, and after solvent is removed by volatilization, hardening is made and an insulating layer 15 with irregularity in film thickness restrained to a value less than 1μm is formed.
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