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公开(公告)号：JPH1170659A
公开(公告)日：1999-03-16
申请号：JP18305098
申请日：1998-06-29
Applicant: ST MICROELECTRONICS SRL
Inventor： VIGNA BENEDETTO , MAGGI RICCARDO
Abstract: PROBLEM TO BE SOLVED: To reduce power consumption and the stress received by a heater element to extend the life of the heater element and to check the function of the constitutional elements thereof. SOLUTION: An ink jet printing head 30 has a mini-gun and a sensor integrated on a single crystal silicon wafer 1 and the mini-gun is formed of an ink chamber 21 and an orifice 23 communicating with the ink chamber 21 and the sensor includes a resistance element 4 provided under the ink chamber 21. The resistance element 4 depends on the pressure acting on the element, 4 and receives repulsive motion when the mini-gun ejects ink droplets to be changed in its pressure and resistance and this resistance change is detected by a proper circuit for specifying the presence of the ejection of ink droplets and the ejection time of ink droplets.
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公开(公告)号：DE60039391D1
公开(公告)日：2008-08-21
申请号：DE60039391
申请日：2000-08-21
Applicant: ST MICROELECTRONICS SRL , HEWLETT PACKARD CO
Inventor： MAGGI RICCARDO , GHOZEIL ADAM
Abstract: A power rising electronic device (100a) for receiving an input current (Ii), and for supplying an output current (Io) which is a linear function of a power of the input current (Ii) with a relative whole-number exponent, comprising a number of diodes (Di1, Di2) equal to the absolute value of the relative whole-number exponent, connected in series with one another so as to produce, from the input current (Ii), an input voltage (Vi) which is a logarithmic function of a power of the input current (Ii) with an exponent equal to said absolute value, an output junction element (To), and means (105r, Dr, Ti, Tr) for applying a voltage (Vbeo) which is a linear function of the input voltage (Vi) to the output junction element (To) so as to produce a current (Ic) which is an exponential function of the voltage (Vbeo) applied, the output current (Io) being derived from the current in the output junction element (Ic).
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公开(公告)号：DE69708067T2
公开(公告)日：2002-07-11
申请号：DE69708067
申请日：1997-06-27
Applicant: ST MICROELECTRONICS SRL
Inventor： VIGNA BENEDETTO , MAGGI RICCARDO
Abstract: The inkjet print head comprises an ink drop emission mini-gun (30) and a drop emission sensor (4) integrated in a chip of semiconductor material. The mini-gun is formed by an ink chamber (21) and a nozzle (23) in communication with the ink chamber and the drop emission sensor includes a resistive element (4) arranged in a position adjacent to the ink chamber (21). The resistance of the resistive element (4) depends on the pressure exerted thereon, so that when the mini-gun emits an ink drop, it is subjected to a recoil movement which causes a change of pressure and hence of resistance in the resistive element; this change in resistance may be detected through a suitable circuitry (29) to identify whether and when a drop of ink has been emitted.
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公开(公告)号：DE69708067D1
公开(公告)日：2001-12-13
申请号：DE69708067
申请日：1997-06-27
Applicant: ST MICROELECTRONICS SRL
Inventor： VIGNA BENEDETTO , MAGGI RICCARDO
Abstract: The inkjet print head comprises an ink drop emission mini-gun (30) and a drop emission sensor (4) integrated in a chip of semiconductor material. The mini-gun is formed by an ink chamber (21) and a nozzle (23) in communication with the ink chamber and the drop emission sensor includes a resistive element (4) arranged in a position adjacent to the ink chamber (21). The resistance of the resistive element (4) depends on the pressure exerted thereon, so that when the mini-gun emits an ink drop, it is subjected to a recoil movement which causes a change of pressure and hence of resistance in the resistive element; this change in resistance may be detected through a suitable circuitry (29) to identify whether and when a drop of ink has been emitted.
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