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A flextensional transducer includes a substrate having an etch stop layer interposed between a first layer and a second layer, a flexible membrane supported by the second layer of the substrate and having an orifice defined therein, and an actuator provided on the flexible membrane and adapted to de

A flextensional transducer includes a substrate having an etch stop layer interposed between a first layer and a second layer, a flexible membrane supported by the second layer of the substrate and having an orifice defined therein, and an actuator provided on the flexible membrane and adapted to deflect the flexible membrane. The substrate has an opening formed through the first layer and a hole formed through the etch stop layer and the second layer such that the hole through the etch stop layer and the second layer of the substrate communicates with the opening through the first layer of the substrate and the orifice in the flexible membrane.

대표청구항 ▼

A flextensional transducer includes a substrate having an etch stop layer interposed between a first layer and a second layer, a flexible membrane supported by the second layer of the substrate and having an orifice defined therein, and an actuator provided on the flexible membrane and adapted to de

A flextensional transducer includes a substrate having an etch stop layer interposed between a first layer and a second layer, a flexible membrane supported by the second layer of the substrate and having an orifice defined therein, and an actuator provided on the flexible membrane and adapted to deflect the flexible membrane. The substrate has an opening formed through the first layer and a hole formed through the etch stop layer and the second layer such that the hole through the etch stop layer and the second layer of the substrate communicates with the opening through the first layer of the substrate and the orifice in the flexible membrane. ermined priority order. 8. The apparatus according to claim 5, wherein the non-volatile memory includes EEPROM. 9. The apparatus according to claim 1, wherein said printhead is an inkjet printhead which performs printing by discharging ink. 10. The apparatus according to claim 9, wherein the inkjet printhead comprises an electrothermal transducer, which generates heat energy to be applied to ink, for discharging ink by utilizing the heat energy. 11. A method of selecting characteristic data of a printhead comprising the steps of: judging whether or not there is at least one medium or external device which stores characteristic data of a printhead mounted to a printing apparatus; and inputting the characteristic data of the printhead from the at least one medium or external device in accordance with a predetermined priority order, based on a judgment result at said judgment step. 12. The method according to claim 11, further comprising the step of determining validity of the characteristic data each time the characteristic data of the printhead is inputted at said input step in accordance with the predetermined priority order. 13. The method according to claim 12, further comprising the step of selecting one of the characteristic data of the printhead or average printhead characteristic data stored in a storage medium provided in the printing apparatus, based on the judgment result at said judgment step or determination result at said determination step. O; WO00/001926, WO; WO00/004271, WO; WO00/008301, WO; 0026500, WO; 0026501, WO; 0026502, WO; 0031375, WO; 0037767, WO; 0037768, WO; 0037771, WO; 0037772, WO; 0039432, WO; 0046484, WO; 0050727, WO; 0050732, WO; 0050733, WO; 0077431, WO; WO01/04535, WO; WO01/18354, WO; WO01/83943, WO; WO02/25059, WO; WO02/095181, WO; WO02/053867, WO; WO02/053867, WO; WO02/075107, WO; WO02/077411, WO; WO02/081863, WO; WO02/081864, WO; WO02/086285, WO; WO02/086286, WO; WO02/090713, WO; WO02/103150, WO; WO03/012255, WO; WO03/023178, WO; WO03/023179, WO; WO03/029607, WO; WO03/029608, WO; WO03/042486, WO; WO03/042487, WO