| 摘要 |
FIELD: printing industry.SUBSTANCE: in the invention the ink jet printing head is designed, comprising an element provided with an ejection port for ejecting the ink. The said ink jet printing head additionally comprises a water-repellent layer comprising a cured product of the condensed product obtained by condensation of the hydrolyzable silane compound comprising an epoxy group, and a hydrolyzable silane compound comprising a perfluoropolyether group on the surface of the said element on the side where the ejection port comes.EFFECT: improved quality of printing.16 cl, 8 dwg, 1 tbl |
