Ink-jet head base board, ink-jet head, and ink-jet apparatus

摘要

A substrate for an ink jet recording head comprising a base plate; a pair of electrodes; a heat generating resistor provided between said electrodes; a top protection layer having a surface contactable to ink; an insulating layer provided between said heat generating resistor and said top protection layer, wherein said top protection layer comprises an amorphous alloy comprising Ta and Cr, and a surface portion of said top protection layer comprises an oxide mainly comprising Cr. <IMAGE>