Method for manufacturing a nozzle plate for inkjet head, and use of a treatment liquid

摘要

The object of the invention is to provide a method of processing a nozzle plate whereby portions around ink ejecting holes of an ink-repellent layer is removed. To this end, there is provided a method of producing a nozzle plate for an inkjet head comprising: a step of preparing a nozzle plate which comprises a substrate and ink ejecting holes (1a) formed in the substrate and has an ink-repellent layer (2) formed on an ink ejecting side surface of the nozzle plate, and the following steps after the above step:
a step of selectively decreasing the mechanical strength of portions around the ink ejecting holes of the ink-repellent layer (2) by filling the ink ejecting holes (1a) with treatment chemical (3), and
a step of selectively removing the portions around the ink ejecting holes of the ink-repellent layer (2), where the mechanical strength is selectively decreased, by a mechanical removing means (4).
The nozzle plate and the treatment chemical are other object of the invention.