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

Abstract: A substrate for use of 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 thin film formed by material represented by Tax Siy Rz, which has 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 in high quality with long life and reliability.

Abstract: A base plate for use of a recording head, which is used for an ink jet head for printing by discharging ink to a recording medium, being provided with energy converting element for discharging ink by generating a bubble in ink with the conversion of electric energy to thermal energy, and an anti-cavitation film to protect the energy converting element from shocks generated at the time of bubble growth and extinction, said anti-cavitation film being used as electrodes for detecting the state of ink by energizing the ink, comprises a first diode having the anode thereof connected to the anti-cavitation film and the cathode thereof connected to the ground potential, and a second diode having the cathode thereof connected to the anti-cavitation film and the anode thereof connected to the power supply potential. With the structure thus arranged, it is made possible to reduce the possibility that the circuit element formed on a semiconductor substrate is destroyed by electrostatic discharge.

Abstract: The invention intends to maintain a constant ink discharge amount among the recording heads, even in case a total pulse width of pulse voltages applied to heat generating resistors. For this purpose, a rank table is prepared in such a manner, even in a situation where a total pulse width of the pulses applied to the heat generating resistor is 3 &mgr;s or less whereby the ink discharge amount decreases with a decrease in the total pulse width, that a maximum reached temperature on the surface of the heat generating resistors at the application of a preheat pulse becomes higher with a decrease in the resistance of a rank resistor, and a pulse width P1 on the rank table is made longer thereby compensating a decrease in the ink discharge amount with a decrease in the total pulse width and maintaining a constant ink discharge amount.

Abstract: The current cutoff circuit is operated when the reset signal for achieving a standby state of the printing operation is active in H state, and cuts off constant current I0. Constant current is therefore cut off, thereby permitting accurate measurement of leak current of the heater power source VH by issuing a reset signal in H state when measuring leak current of the heater power source VH. In the standby state in which the printing operation is not performed, the reset signal becomes active, and operation of the current cutoff circuit cuts off constant current. The power consumption can therefore be reduced. Because the reset signal serves as a control signal for controlling the current cutoff circuit, it is not necessary to increase the number of terminals for connecting the element substrate and the wiring substrate.

Abstract: A steel sheet for preparing a heat shrink band effective for preventing the color drift is provided by a steel sheet having 24 kg/mm2 or higher of yield stress and 400 or higher of the product between the permeability &mgr; under a magnetic field of 0.3 Oe and the sheet thickness.

Abstract: An agent for treating exocrine gland disorders by inhibiting the production and/or an activity of interleukin-10; and a transgenic mouse useful for screening the same wherein interleukin-10 is specifically expressed in its exocrine glands.

Abstract: A liquid discharge head, a liquid discharging apparatus having such a liquid discharge head, and a method for manufacturing such a liquid discharge head. The liquid discharge head is provided with a top plate including a plurality of ink discharge ports for discharging ink droplet, a plurality of first liquid passages for supplying ink in correspondence to the plurality of ink discharge ports and a common liquid chamber for supplying the ink to the first liquid passages, a liquid discharge head substrate obtained by forming second liquid passages arranged adjacent to the first liquid passages and including bubble generating areas on a substrate on which a plurality of heat generating elements for causing the ink discharge port to discharge the ink droplets and including drivers for driving the heat generating elements, and a movable diaphragm for completely isolating the first liquid passages and the second liquid passages from each other and displaceable by a bubble generated on the heat generating element.

Abstract: A substrate for use of an ink jet recording head comprises a plurality of heat generating resistive members formed on the substrate, a wiring pattern formed to be electrically connected with the heat generating resistive members, and a protection film formed on the heat generating resistive members and the wiring pattern to protect them from ink, and then, a vertically turn-up wiring structure is formed with an insulation film formed on the substrate, and one side of wiring connected with the heat generating resistive members is arranged immediately below the heat generating resistive members in a width and a length larger than those of heat generating resistive members with the insulation film between them. For this substrate, the heat generating resistive members and the wiring positioned immediately below them are formed by polysilicon having impurities in different densities.

Abstract: The present invention provides an ink jet head substrate comprising a heat generating resistance member forming a heat generating portion, an electrode wiring electrically connected to the heat generating resistance member, and an anti-cavitation film provided on the heat generating resistance member and the electrode wiring via an insulation protection layer, and wherein the anti-cavitation film is formed from different materials with more than two layers.

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: The present invention provides an electron emission device assured to emit electrons without requiring film thickness control in the order of submicrons and production method of the electron emission device as well as a display apparatus using the electron emission device.

Abstract: To form a sharp edge portions of an electron emission part of a field emission type cathode to face an electron application surface. At least an electron emission part 40 of a field emission type cathode K is constituted by stacking thin plate-like conductive fine grains 30 and the field emission type cathode K is formed so that the plane direction of the thin plate-like fine grains of the electron emission part 40 crosses an electron application surface.

Abstract: A stable operation is realized without any malfunction of a driver even under a voltage condition that a supplied voltage is 3.3 V or lower. For this purpose, in an ink-jet printhead having an ink orifice for discharging ink, a plurality of heat generation elements for generating heat energy used to discharge ink, and an ink channel which incorporates the heat generation elements and communicates with the ink orifice, a driver for driving the heat generation elements, and a logic circuit for controlling the driver are formed on a single board. The gate oxide film thickness of an enhancement NMOS transistor which forms the driver is larger than that of an enhancement NMOS transistor which forms the logic circuit.

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: A recording head comprises a plurality of recording elements for performing recording; a driving circuit for driving the plurality of recording elements; and a predetermined voltage generating circuit for generating a predetermined voltage to be applied to the plurality of recording elements from voltage supplied from outside. With the head thus structured, a desired voltage is generated in the interior of the head by use of the predetermined voltage generating circuit for performing recording, thus making it possible to prevent the voltage drop which may take place if the voltage is supplied from outside through a cable, as well as to prevent the durability of the heat generating elements from being damaged due to noises. It also becomes possible to set the voltage to be applied to the recording elements at an optimal value corresponding to the discharge voltage, hence stabilizing ink discharges efficiently.