Patent ID: 8303083
Filing Date: 2012-11-06
Classification: B41J,Y10T

Abstract:
1. A liquid ejection head, comprising: a nozzle formation member comprising a nozzle substrate and a liquid repellent layer disposed on a droplet ejection face of the nozzle substrate in which one or more nozzle orifices is formed to eject droplets, the liquid repellent layer comprising a first sub-layer and a second sub-layer, the first sub-layer has the property of liquid repellency, the second sub-layer has liquid repellency, the first sub-layer containing a higher proportion of low-molecular-weight molecules than the second sub-layer, the second sub-layer containing a higher proportion of high-molecular-weight molecules than the first sub-layer, both the first sub-layer and the second sub-layer are exposed on a surface of a droplet ejection side of the nozzle formation member.