Abstract: A liquid ejection head includes a liquid path; an ejection outlet forming member which constitutes a part of a wall of the liquid and which forms an ejection outlet for ejecting a droplet of liquid; a heat generating element, provided at a position opposing to the ejection outlet of the wall of the liquid flow path, for generating a bubble in the liquid by application of heat to the liquid; a restrictor portion, provided at a recessed portion of the ejection outlet, wherein the recessed portion is recessed from a plane in which the ejection outlet is formed, wherein the liquid forms a meniscus and is retained in the ejection outlet such that the restrictor portion is within the liquid, wherein an area So of an opening of the restrictor portion and a surface Sh of the heat generating element satisfy So?Sh. According to this invention, a central portion of the meniscus opposed to the fine opening at the ejection outlet bulges, and the liquid is ejected in this state.

Abstract: Each of pixels of recorded image is formed by a plurality of dots composed with ink droplets ejected from a plurality of different orifices at individual different main-scannings. With this recording process, the variation of ink ejection characteristics between a plurality of orifices in a recording head can be reduced in forming pixels.

Abstract: An ink jet printing apparatus and an ink jet printing method are provided which, when printing small ink droplets at high resolution, can make white lines caused by an “end dot deflection” less visually conspicuous. To that end, an ink jet print head used has a plurality of nozzle substrates H1100 so arranged that an overlapping region in which the printable areas of respective nozzle substrates partly overlap is formed. According to a print density to be achieved, each of the nozzles H1105 corresponding to the overlapping region is controlled for ejection/non-ejection of ink. With this method, it is possible to print as many dots as most match the intensity of the “end dot deflection” phenomenon that varies according to the print density. This enables a blank line to be filled with an appropriate number of dots at all times, regardless of the width of the blank line.

Abstract: A liquid ejection head includes a liquid path; an ejection outlet forming member which constitutes a part of a wall of the liquid and which forms an ejection outlet for ejecting a droplet of liquid; a heat generating element, provided at a position opposing to the ejection outlet of the wall of the liquid flow path, for generating a bubble in the liquid by application of heat to the liquid; a restrictor portion, provided at a recessed portion of the ejection outlet, wherein the recessed portion is recessed from a plane in which the ejection outlet is formed, wherein the liquid forms a meniscus and is retained in the ejection outlet such that the restrictor portion is within the liquid, wherein an area So of an opening of the restrictor portion and a surface Sh of the heat generating element satisfy So?Sh. According to this invention, a central portion of the meniscus opposed to the fine opening at the ejection outlet bulges, and the liquid is ejected in this state.

Abstract: A head is provided with a driving signal line having a driving terminal for receiving a driving signal sent from an apparatus to the head, and an identification terminal. The driving signal line is electrically connected to the identification terminal. With the use of the driving signal line and the identification terminal, the head is identified.

Abstract: The semiconductor device comprises a gate insulating film including a first dielectric film of HfxAl1-xOy (0.7<x<1) formed over a semiconductor substrate, and a second dielectric film different from the first dielectric film formed over the first dielectric film; and a gate electrode formed over the gate insulating film and including a polycrystalline silicon film, whereby the local abnormal growth of the polycrystalline silicon film in the process of forming the polycrystalline silicon film is prevented, and the gate leakage current can be much decreased.

Abstract: The ink jet print head according to this invention includes a plurality of nozzles; a plurality of electrothermal transducers with one transducer provided for each of the plurality of nozzles, the electrothermal transducers being adapted to eject ink supplied into the nozzles when energized; an energization start circuit to start energizing the electrothermal transducers; a voltage detection circuit to detect a voltage applied to the electrothermal transducers after starting the energization; and an energization stop circuit to stop the energization of the electrothermal transducers according to the voltage detected by the voltage detection circuit.

Abstract: The semiconductor device comprises a gate insulation film 23 formed on a first region 14 of a semiconductor substrate 10 and including a silicon oxide-based insulation film 18, a high dielectric constant film 20 formed on the silicon oxide-based insulation film 18, and an oxygen diffusion preventing film 22 formed on the high dielectric constant film 18 and having a lower oxygen diffusion coefficient than the high dielectric constant film 18; a gate electrode 24 formed on the first gate insulation film 23; a gate insulation film 25 formed on a second region 16 of the semiconductor substrate 10 and including the high dielectric constant film 20 and the oxygen diffusion preventing film 22 formed on the high dielectric constant film 20; and a gate electrode 24 formed on the gate insulation film 26.

Abstract: A semiconductor device in which the insulation characteristics of an insulating film of multilayer structure including a lower-layer insulating film and a high-dielectric-constant film formed on the lower-layer insulating film are ensured, and a method for fabricating such a semiconductor device. A silicon oxide film or a silicon oxynitride film is formed on a semiconductor substrate as a lower-layer insulating film and part of the lower-layer insulating film is removed. Then a high-dielectric-constant film the dielectric constant of which is higher than that of the lower-layer insulating film is formed on the exposed semiconductor substrate and the lower-layer insulating film. If the lower-layer insulating film is a silicon oxide film, then a metallic compound not including chlorine is used for forming this high-dielectric-constant film. If the lower-layer insulating film is a silicon oxynitride film, then a metallic chloride can be used for forming this high-dielectric-constant film.

Abstract: Two lines extending in the main scanning direction build a set of lines (L1, L2) each of which is formed by a plurality of dots. Assignment is alternately executed to preceding scanning and subsequent scanning so as to allow each of the lines (L1, L2) formed by a number of pixels (P1, P2, P4, P3, P5, P6, P8, P7, - - - ) to extend along a snake movement-like route. Thus, dots located adjacent to each other in the auxiliary scanning direction are not formed by same scanning, and a quantity of ink spreading on a recording medium without penetration of the ink through the latter can be reduced. Consequently, there few arises stripe and fluctuation in density, whereby an excellent quality of image having sharp edge portions can be obtained without any occurrence of a problem attributable to the presence of unfixed ink.

Abstract: The semiconductor device comprises a p type silicon substrate 18, a gate insulation film 27 of a layer film of a silicon oxynitride film 25 and an aluminum oxide film 26 which are sequentially formed on the p type silicon substrate 18, and a gate electrode 28 formed on the gate insulation film 27. Accordingly, both the flat band voltage shift and the hysteresis can be depressed. Thus, MIS transistors having good device characteristics can be realized.

Abstract: A semiconductor device in which the insulation characteristics of an insulating film of multilayer structure including a lower-layer insulating film and a high-dielectric-constant film formed on the lower-layer insulating film are ensured, and a method for fabricating such a semiconductor device. A silicon oxide film or a silicon oxynitride film is formed on a semiconductor substrate as a lower-layer insulating film and part of the lower-layer insulating film is removed. Then a high-dielectric-constant film the dielectric constant of which is higher than that of the lower-layer insulating film is formed on the exposed semiconductor substrate and the lower-layer insulating film. If the lower-layer insulating film is a silicon oxide film, then a metallic compound not including chlorine is used for forming this high-dielectric-constant film. If the lower-layer insulating film is a silicon oxynitride film, then a metallic chloride can be used for forming this high-dielectric-constant film.

Abstract: A head is provided with a driving signal line having a driving terminal for receiving a driving signal sent from an apparatus to the head, and an identification terminal. The driving signal line is electrically connected to the identification terminal. With the use of the driving signal line and the identification terminal, the head is identified.

Abstract: Each of pixels of recorded image is formed by a plurality of dots composed with ink droplets ejected from a plurality of different orifices at individual different main-scannings. With this recording process, the variation of ink ejection characteristics between a plurality of orifices in a recording head can be reduced in forming pixels.

Abstract: A head is provided with a driving signal line having a driving terminal for receiving a driving signal sent from an apparatus to the head, and an identification terminal. The driving signal line is electrically connected to the identification terminal. With the use of the driving signal line and the identification terminal, the head is identified.

Abstract: Disclose is a reliable recording head free from any operation error. M×N recording elements are divided into N blocks each having M recording elements, and are driven for every M recording elements N times. M×N driving circuits energize and drive the M×N recording elements. A selection circuit outputs N block selection signals for selecting the N blocks to be divisionally driven. An input circuit inputs recording data corresponding to the M recording elements. An output circuit outputs a driving signal to the driving circuits in accordance with the recording data input from the input circuit and the block selection signals. The selection circuit outputs the N block selection signals on the basis of L (L<N) control signals.

Abstract: Two lines extending in the main scanning direction build a set of lines (L1, L2) each of which is formed by a plurality of dots. Assignment is alternately executed to preceding scanning and subsequent scanning so as to allow each of the lines (L1, L2) formed by a number of pixels (P1, P2, P4, P3, P5, P6, P8, P7, - - - ) to extend along a snake movement-like route. Thus, dots located adjacent to each other in the auxiliary scanning direction are not formed by same scanning, and a quantity of ink spreading on a recording medium without penetration of the ink through the latter can be reduced. Consequently, there few arises stripe and fluctuation in density, whereby an excellent quality of image having sharp edge portions can be obtained without any occurrence of a problem attributable to the presence of unfixed ink.

Abstract: Each of pixels of recorded image is formed by a plurality of dots composed with ink droplets ejected from a plurality of different orifices at individual different main-scannings. With this recording process, the variation of ink ejection characteristics between a plurality of orifices in a recording head can be reduced in forming pixels.

Abstract: Two lines extending in the main scanning direction build a set of lines (L1, L2) each of which is formed by a plurality of dots. Assignment is alternately executed to preceding scanning and subsequent scanning so as to allow each of the lines (L1, L2) formed by a number of pixels (P1, P2, P4, P3, P5, P6, P8, P7, - - - ) to extend along a snake movement-like route. Thus, dots located adjacent to each other in the auxiliary scanning direction are not formed by same scanning, and a quantity of ink spreading on a recording medium without penetration of the ink through the latter can be reduced. Consequently, there few arises stripe and fluctuation in density, whereby an excellent quality of image having sharp edge portions can be obtained without any occurrence of a problem attributable to the presence of unfixed ink.

Abstract: A recording apparatus has a recording head has a data generating unit that converts information transmitted from an external device into recording data that matches the configuration of the recording head for recording by the recording head. The recording apparatus has a first power supply circuit for supplying drive power to a drive element that drive by the nozzles of the recording head and a second power supply circuit that drives the heating elements that control recording by the nozzles. As a result, the recording apparatus can provide stable recording, unaffected by any voltage drop in the circuitry that drives the recording head.