Abstract: A substrate for use in an ink jet recording head is provided with a plurality of heat generating members for generating thermal energy to be utilized for discharging ink. The heat generating members are structured by a thin film formed by material represented by Tax Siy Rz, which has a specific resistance value of 4000 &mgr;&OHgr;·cm or less, where R is one or more kinds of elements selected from/among C, O, N, and x+y+z=100. With the structure thus arranged, the heat generating members make it possible to maintain the change of resistance values within a small amount even when used continuously for a long time, and provide recorded images of high quality with long life and reliability.

Abstract: An ink supply port is opened in an Si substrate on which an ink discharge energy generating element is formed, by anisotropic etching, from a back surface opposite to a surface on which the ink discharge energy generating element is formed. When the anisotropic etching is effected, OSF (oxidation induced laminate defect) is remained on the back surface of the Si substrate with OSF density equal to or greater than 2×104 parts/cm2 and a length of OSF equal to or greater than 2 &mgr;m.

Abstract: A micro-electromechanical device comprises a movable member having a fixedly supporting portion and movable portion, and a substrate for having the movable member which is supported in a state having a specific gap with the substrate. For this device, a metallic layer which provides the gap for the movable portion is covered by the fixedly supporting portion of the movable member, and remains to be used as a wiring layer. The wiring layer is electrically connected with a plurality of wiring provided for the substrate. With the structure, thus arranged, the electric resistance is made significantly small. The electrical efficiency is enhanced accordingly. Also, the apparatus that adopts this device is made smaller, and the costs of manufacture thereof is made lower as well.

Abstract: A method for manufacturing a liquid discharge head, which is provided with discharge ports for discharging liquid; liquid flow paths communicated with the discharge ports for supplying the liquid to the discharge ports; heat generating elements arranged in the liquid flow paths for creating bubbles in the liquid; an elemental substrate having the heat generating elements therefor; and movable members arranged for the elemental substrate having each free end thereof on the discharge port side with a gap with the elemental substrate in the position facing the heat generating element on the elemental substrate, each free end of the movable members being displaced on the discharge port side centering on the fulcrum structured near the supporting and fixing portion with the elemental substrate by the pressure exerted by the creation of the bubbles for discharging the liquid form the discharge ports, comprises the steps of forming gap formation members; forming the material film; pattering the material film; and fo

Abstract: A liquid discharging head comprises a discharging port for discharging liquid, a liquid flow path communicated with said discharging port, a bubble generating region for causing the liquid to generate a bubble and a movable member having provided thereon a free end disposed facing to said bubble generating region, and on the downstream of said liquid flow path directed toward said discharging port. At least when said movable member is in stationary state, a side of said liquid flow path corresponding to said bubble generating region is substantially composed of all with a wall face and common communicating space for commonly communicating said liquid flow path with a neighboring liquid flow path is provided in the upward of a movable section of said movable member.

Abstract: In a liquid discharge head having an element substrate on the surface of which are provided in parallel a plurality of discharge energy generating elements generating heat energy for creating a bubble in liquid, a fixed portion provided on the element substrate so as to face the plurality of discharge energy generating elements, and fixed to the element substrate, and a plurality of movable members comprising a movable portion extending from the end portion of the fixed portion and displaced by the bubble, a fulcrum about which the movable portion is displaced is located on the movable portion other than a corner portion formed at the boundary between the movable portion and the fixed portion.

Abstract: A base member for an ink jet head, the base member comprising a substrate, a heat generating resistor provided between electrodes which constitute a pair on the substrate an upper protection layer provided on an insulation layer which in turn is provided on the heat generating resistor, the upper protection layer having a contact surface contactable to ink, the improvement residing in that the upper protection layer is made of amorphous alloy having a following composition formula: Ta&agr;Fe&bgr;Ni&ggr;Cr&dgr; where 10 atomic %≦&agr;≦30 atomic %, &agr;+&bgr;<80 atomic % &agr;<&bgr;, &dgr;>&ggr; and, &agr;+&bgr;+&ggr;+&dgr;=100 atomic %, and at least the contact surface of the upper protection layer contains an oxide of a constituent component.

Abstract: A liquid discharge head includes a pair of substrates mutually fixed in lamination, a plurality of liquid flow paths arranged on the bonded faces of the substrates, the leading end of the plural liquid flow paths being communicated with a plurality of discharge ports, a plurality of heat generating members arranged on at least one of the substrates corresponding to each of the liquid flow paths and a movable member having in the liquid flow path the free end thereof on the discharge port side, and a region between the heat generating member and the movable member, where liquid exists. In the liquid discharge head, a bubble is created by enabling thermal energy generated by the heat generating members to act upon the liquid, and the bubble is controlled by the movable member to discharge liquid in the liquid flow paths from the discharge ports to the outside.

Abstract: An ink jet head comprises a head substrate provided with a plurality of ink paths, pressure generating elements each arranged for each of the paths; and an orifice plate provided with ink discharge openings each communicated with each of the ink paths. Then, the bonding surface side of the orifice plate to the substrate is provided at least with the surface treatment. The orifice plate is formed by fluororesin or resin containing fluorine. With the structure thus arranged, it becomes possible to bond the orifice plate having ink repellency to the head substrate firmly and assuredly, while enabling the ink jet head thus manufactured to maintain a good ink repellency for a long time.

Abstract: The present invention provides a liquid discharge head comprising a plurality of discharge ports for discharging liquid, first and second substrates for defining a plurality of liquid flow paths communicated with the discharge ports, and a plurality of energy converting elements disposed in the liquid flow paths and adapted to convert electrical energy into discharge energy for liquids in the liquid flow paths, wherein sensors for detecting behavior of the liquid are provided in the respective liquid flow paths as solid structure portions protruded from walls of the liquid flow paths.

Abstract: A substrate having plural recording elements and electrical leads for supplying electric signals to the recording elements includes electrical contacts for external electrical connection for reception of image signals used for driving the recording elements; and a processing circuit for converting signals which are serially supplied to the connecting contact to parallel signals to be applied to the recording elements.

Abstract: In a liquid discharge head having a movable member displaced by generation of a bubble, endurance of stepped portions of the movable member and of root portions of movable parts of the movable member is enhanced and flexure deformation of the movable member is prevented to enhance endurance of the member. A pressing member for covering stepped portions of a movable member and root portions of branched movable parts is provided within a flow path. A part of the pressing member is tapered and extends to a downstream side (toward a discharge port) to be spaced apart from the movable member, thereby forming a flexure regulating portion opposed to and spaced apart from an intermediate portion of the movable member. The pressing member and the flexure regulating portion suppress excessive deformation of the movable member.

Abstract: A method for producing a liquid discharge head provided with an element substrate and a ceiling plate which are fixed in a mutually opposed state, plural liquid path walls provided between said ceiling plate and said element substrate and defining plural liquid paths, plural discharge energy generating elements provided in parallel manner on the surface of said element substrate so as to be respectively positioned in said plural liquid paths, and plural movable members provided on said element substrate so as to respectively oppose said plural discharge energy generating elements and formed like a cantilever, fixed at the upstream ends in the flowing direction of the liquid in said liquid paths and having free ends at the downstream ends, the method comprising the steps of forming a gap forming member in a position, forming a first material layer, patterning an anti-etching protective film, forming a second material layer, removing a portion of said second material layer, cutting said element substrate, and r

Abstract: A liquid discharge head at least comprises a discharge opening for discharging the liquid, a liquid flow channel in communication with the discharge opening and for supplying the liquid to the discharge opening, a substrate equipped with a heat generator for producing a bubble in the liquid that is filled in the liquid flow channel, and a movable plate supported and fixed onto the substrate at a position of the substrate opposed to the heat generator and with a gap from the substrate, with a free end on the discharge opening side. The liquid discharge head can discharge the liquid from the discharge openings by forcing the free end of the movable plate to be displaced toward the discharge opening around a fulcrum portion made near a support and fixing portion of the movable plate with the substrate due to pressure caused by produced bubble.

Abstract: An ink set for use in an ink-jet recording method for recording a color image on a recording medium using four colors or more of ink, each ink includes a coloring material and a liquid medium, wherein any combination of two different inks causes aggregation of the coloring material by a chemical reaction on mutual contact on a recording medium.

Abstract: In a liquid discharge head having an element substrate on the surface of which are provided in parallel a plurality of discharge energy generating elements generating heat energy for creating a bubble in liquid, a fixed portion provided on the element substrate so as to face the plurality of discharge energy generating elements, and fixed to the element substrate, and a plurality of movable members comprising a movable portion extending from the end portion of the fixed portion and displaced by the bubble, a fulcrum about which the movable portion is displaced is located on the movable portion other than a corner portion formed at the boundary between the movable portion and the fixed portion.

Abstract: In ink jet recording head in which a heating resistor forming a heating portion, a wiring electrically connected to the heating resistor, and a protecting film formed on the heating resistor and the wiring to protect the heating resistor and the wiring are arranged on a substrate for the ink jet recording head, and an ink path communicated with a discharging port for discharging ink is formed on the substrate for the ink jet recording head, the protecting film includes a first layer protecting film for covering the heating resistor and the wiring, a second layer protecting film formed on the first layer protecting film by a material different from that of the first layer protecting film and having an opening in a portion corresponding to the heating portion of the heating resistor and constructed by an inorganic material, and a third layer protecting film constructed by the same material system as the first layer protecting film and covering the second layer protecting film and the first layer protecting film

Abstract: A substrate for use of an ink jet head comprises a plurality of heat generating resistive elements formed on a substrate through insulation layer, electrode wiring electrically connected with said heat generating resistive elements, and protection layer to cover said heat generating resistive elements. Then, the protection layer of this substrate is made dielectric formed by plural atoms containing Si, and at the same time, the composition ratio of the dielectric of the portion of the protection layer at least nearest to the heat generating resistive elements is almost the stoichiometric composition ratio, and then, the composition ratio of the dielectric of the portion farthest from the heat generating resistive elements is richer in Si than the stoichiometric composition ratio.

Abstract: The ink jet print head provides a good electrical connection with the silicon substrate. A silicon substrate of the ink jet print head the electrodes for electrical connection have a layer construction such that, under a part of the metal bumps, wires drawn from the cavitation resistant film and a metal layer not corroded by the ink are formed overlapping each other. The ink jet printing apparatus uses the ink jet print head constructed as described above.

Abstract: Beneath electro-thermal conversion device layers having heaters, a common electrode layer electrically connected to heaters through branch connection parts is laminated through a protective film, and discrete electrodes are formed on an upper surface of the electro-thermal conversion device layers putting the branch connection parts between, respectively.