Forming method of ink jet print head substrate and ink jet print head substrate, and manufacturing method of ink jet print head and ink jet print head

Abstract

The invention provides a forming method of an ink jet print head substrate and an ink jet print head substrate, and a manufacturing method of an ink jet print head and an ink jet print head, in which adhesion between a substrate for forming an ink discharging pressure generating element and an ink flow path forming member is increased to increase reliability even if an ink flow path forming member is formed covering a long distance. In a forming method of an ink jet print head substrate or the like, in which an ink flow path forming member is attached onto a substrate on which an ink discharging pressure generating element is formed, minute pit is formed on an attachment region of the substrate for attaching the liquid flow path forming member.

Dependencies are inferred from the claim text.