SUBSTRATE FOR INKJET HEAD, INKJET HEAD, AND INKJET PRINTING APPARATUS

摘要

There are provided a substrate for an inkjet head, an inkjet head, and an inkjet printing apparatus wherein in a case where current is carried through a protection layer for heating resistors, electrical connection to its periphery is prevented without fail. The substrate for the inkjet head includes a first protection layer disposed to cover a heating resistor layer and having an insulation property and a second protection layer disposed to contact the first protection layer and having conductivity. The second protection layer includes a plurality of individual sections provided to correspond to the plurality of heating resistors, a common section connecting the plurality of individual sections, and fuse sections connecting the individual sections and the common section, the fuse sections being formed to be thinner than the individual sections.

主权项

1. A substrate for an inkjet head comprising:
a base; a heating resistor layer disposed on the base and including a plurality of heating resistors which generate heat to eject ink; a first protection layer disposed to cover the heating resistor layer and having an insulation property; and a second protection layer disposed to contact the first protection layer and having conductivity, wherein the second protection layer includes a plurality of individual sections provided to correspond to the plurality of heating resistors, a common section connecting the plurality of individual sections, and fuse sections connecting the individual sections and the common section, the fuse sections being formed to be thinner than the individual sections.