摘要:
A stable and durable heat-generating element and substrate, a method of efficient and highly precise manufacture of same, and equipment utilizing same are obtained. Employing as material a silicon substrate into at least a portion of which boron or another impurity is diffused to impart conductivity, a heater portion, in which are provided one or a plurality of slits the corner portions of which are removed or are rounded, is fabricated integrally on the silicon substrate by etching processes. Simultaneously with this, a depression portion provided below to control the heating state of the heater portion is formed integrally.
摘要:
An electrostatic actuator includes a silicon diaphragm, an opposing electrode opposing the diaphragm with intervention of a gap therebetween, and an insulating layer formed on a surface of the diaphragm, opposing the opposing electrode. A voltage is applied between the diaphragm and the opposing electrode. The insulating layer has a laminated structure including a dielectric layer formed of a material having a higher relative dielectric constant than silicon oxide, on the diaphragm, and a surface layer exhibiting higher reduction in surface charge density than that of the dielectric layer, formed on the dielectric layer.
摘要:
To provide an electrostatic actuator that generates high pressure under a given voltage and includes an insulating film exhibiting excellent insulation resistance, a droplet discharge head that includes the electrostatic actuator and a method for manufacturing the droplet discharge head, a droplet discharge apparatus that includes the droplet discharge head and has excellent printing performance, and a device that includes the electrostatic actuator and has excellent driving performance. A diaphragm 12, a counter electrode 17 opposite to the diaphragm 12 with a gap interposed therebetween, and an insulating film 16 on a surface of the diaphragm 12 opposite to the counter electrode 17 are included. The insulating film 16 includes at least a dielectric film 16a formed of a substance having a higher relative dielectric constant than silicon oxide.
摘要:
To provide an electrostatic actuator that generates high pressure under a given voltage and includes an insulating film exhibiting excellent insulation resistance, a droplet discharge head that includes the electrostatic actuator and a method for manufacturing the droplet discharge head, a droplet discharge apparatus that includes the droplet discharge head and has excellent printing performance, and a device that includes the electrostatic actuator and has excellent driving performance. A diaphragm 12, a counter electrode 17 opposite to the diaphragm 12 with a gap interposed therebetween, and an insulating film 16 on a surface of the diaphragm 12 opposite to the counter electrode 17 are included. The insulating film 16 includes at least a dielectric film 16a formed of a substance having a higher relative dielectric constant than silicon oxide.
摘要:
Proposed is dispensing technology capable of reliably spotting a biological sample on a solid phase. A head chip applies a voltage pulse between a diaphragm and separate electrodes based on a drive control signal output from a head driver IC, and discharges a solution containing protein filled in a pressurized chamber as a result of the elastic deformation of the diaphragm. A drive pulse generation circuit generates a drive voltage pulse and supplies this to the head chip in order to discharge a solution containing protein from the head chip. The drive current detection circuit detects a drive current flowing between the diaphragm and separate electrodes. Since the waveform of the detected drive current and the peak current value and so on differ in the case where the discharge status is normal and in the case where it is abnormal, a defective discharge can be discriminated by detecting such change.
摘要:
An ink jet printer provided with an ink jet print head having a nozzle, an ink channel that is connected to the nozzle, and an electrostatic actuator that is composed of a diaphragm that is provided in a part of the ink channel and an electrode placed outside of the ink channel opposite to the diaphragm. The diaphragm is distorted by means of an electrostatic force generated by applying voltage to the electrostatic actuator thereby performing printing with ink droplets ejected from the nozzle. The electrostatic actuator driver comprises a timing pulse generator, charge circuit and discharge circuit. The driver controls an amount of charge to be charged to the electrostatic actuator as well as charge rate thereof corresponding to the environmental operating condition of the ink jet printer.
摘要:
An ink jet head includes a common electrode formed on a semiconductor substrate. A charge is applied to the common electrode and an electrode disposed on another substrate in opposition to a diaphragm formed in the semiconductor substrate to electrostatically deform the diaphragm and eject ink. The common electrode comprises a single layer or multiple layer metallic coating forming ohmic contact on the semiconductor substrate. In addition, a group III or group V element is doped to a high concentration at the area on the semiconductor substrate where the common electrode is formed. The diaphragm can therefore vibrate at high speed. An ink jet head capable of high speed printing can be provided because supply and elimination of the charge to the diaphragm can be accomplished at high speed.
摘要:
An ink jet printer provided with an ink jet print head having a nozzle, an ink channel that is connected to the nozzle, and an electrostatic actuator that is composed of a diaphragm that is provided in a part of the ink channel and an electrode placed outside of the ink channel opposite to the diaphragm. The diaphragm is distorted by means of an electrostatic force generated by applying voltage to the electrostatic actuator thereby performing printing with ink droplets ejected from the nozzle. The electrostatic actuator driver comprises a timing pulse generator, charge circuit and discharge circuit. The driver controls an amount of charge to be charged to the electrostatic actuator as well as charge rate thereof corresponding to the environmental operating condition of the ink jet printer.
摘要:
An ink jet printer provided with an ink jet print head having a nozzle, an ink channel that is connected to the nozzle, and an electrostatic actuator that is composed of a diaphragm that is provided in a part of the ink channel and an electrode placed outside of the ink channel opposite to the diaphragm. The diaphragm is distorted by means of an electrostatic force generated by applying voltage to the electrostatic actuator thereby performing printing with ink droplets ejected from the nozzle. The electrostatic actuator driver comprises a timing pulse generator, charge circuit and discharge circuit. The driver controls an amount of charge to be charged to the electrostatic actuator as well as charge rate thereof corresponding to the environmental operating condition of the ink jet printer.
摘要:
An inkjet printer provided with an ink jet print head having a nozzle, an ink channel that is connected to the nozzle, and an electrostatic actuator that is composed of a diaphragm that is provided in a part of the ink channel and an electrode placed outside of the ink channel opposite to the diaphragm. The diaphragm is distorted by means of an electrostatic force generated by applying a first voltage to the electrostatic actuator. A second voltage, different than the first voltage, is applied to the actuator to relax the diaphragm and to discharge ejecting ink droplets from the nozzle.