Sealing sheet, and liquid ejection head and inkjet apparatus using same

摘要

A sealing sheet is configured to restrain at least one of leakage of liquid in and out. The sealing sheet includes: a film member which is impermeable to the liquid and configured to cover a region that needs to be sealed; and electrical wires which are arranged on the film member. An electrical signal corresponding to change in electrical resistance due to contact with the liquid is obtainable from the electrical wires.

主权项

1. A sealing sheet configured to restrain leakage of liquid in and out, the sealing sheet comprising:
a film member which is impermeable to the liquid and configured to cover a region that needs to be sealed; and electrical wires which are arranged on the film member, wherein an electrical signal corresponding to change in electrical resistance due to contact with the liquid is obtainable from the electrical wires, wherein the electrical wires include: an internal leakage detection electrode configured to detect an internal liquid leaking out of the region that needs to be sealed; and an external leakage detection electrode configured to detect an external liquid going to leak into the region that needs to be sealed, wherein the sealing sheet is configured to cover a lateral side face of a laminated structure including a nozzle plate formed with a nozzle which has a liquid ejection port configured to eject liquid, a flow channel structure body formed with a flow channel which is configured to guide the liquid to the nozzle, and an ejection energy generating element which is configured to generate ejection energy to eject the liquid from the nozzle.