Liquid ejection head and liquid ejection apparatus
AssigneeFuji Photo Film Co., Ltd.
InventorKanji Nagashima
Life of this patent
Estimating the term…
Abstract
The liquid ejection head has nozzles for ejecting liquid in which a plurality of pressure chambers are arranged in a two-dimensional matrix configuration. The liquid ejection head comprises: pressure generating devices which are disposed so as to correspond to the pressure chambers and generate pressure for ejecting the liquid in the pressure chambers; pressure sensor members formed in at least two layers which determine the pressure inside the pressure chambers generated by the pressure generating devices; and electrodes which are disposed on both surfaces of one of the layers of the pressure sensor members and cause the one of the pressure sensor members to become effective determination sections.
Claims17
A liquid ejection head having nozzles for ejecting liquid in which a plurality of pressure chambers are arranged in a two-dimensional matrix configuration, the liquid ejection head comprising:
- pressure generating devices which are disposed so as to correspond to the pressure chambers and generate pressure for ejecting the liquid in the pressure chambers;
- pressure sensor members formed in at least two layers which determine the pressure inside the pressure chambers generated by the pressure generating devices;
- and
- electrodes which are disposed on both surfaces of one of the layers of the pressure sensor members and cause the one of the pressure sensor members to become effective determination sections.
A liquid ejection apparatus having a liquid ejection head having nozzles for ejecting liquid in which a plurality of pressure chambers are arranged in a two-dimensional matrix configuration, the liquid ejection head comprising:
- pressure generating devices which are disposed so as to correspond to the pressure chambers and generate pressure for ejecting the liquid in the pressure chambers;
- pressure sensor members formed in at least two layers which determine the pressure inside the pressure chambers generated by the pressure generating devices;
- and
- electrodes which are disposed on both surfaces of one of the layers of the pressure sensor members and cause the one of the pressure sensor members to become effective determination sections.
Dependencies are inferred from the claim text.