Patent ID: 9669630
Date: 2017-06-06
CPC Classifications: B41J,Y10T

Claim:
1. A method for manufacturing liquid ejection heads, comprising the steps of: forming ejection port members on a substrate, the ejection port members each having a liquid channel and an ejection port for ejecting liquid through the liquid channel, the liquid channel communicating with the substrate; forming supply ports passing through the substrate to supply liquid to the channels; forming a separation groove in the substrate to separate the substrate for each liquid ejection head, wherein the step of forming the ejection port members includes the step of hardening a material constituting the ejection port members by heat treatment; and the step of forming the separation groove is performed before the step of hardening; and forming a supporting member on the substrate, the supporting member having high thermal conductivity to uniformly dissipate heat, wherein, the supply ports and the separation groove are formed to pass through the substrate and not to pass through the supporting member.