Abstract: A printing head is intended to achieve high reliability and a production method of the printing head is intended to achieve high yield at low cost. A liquid ejecting printing head employs a base body, in which an electrothermal transducer element, a driving functional element for driving the electrothermal transducer element, a wiring electrode connecting between the electrothermal transducer element and the driving functional element, and an insulation layer provided on the wiring electrode are formed on a substrate. The electrothermal transducer element has a heat generating resistor formed of a material selected from the group consisting TaN, HfB2, Poly-Si, Ta—Al, Ta—Ir, Au and Ag. A protective layer above the heat generating body is formed of an insulative compound deposited to be low density to high density in order.

Abstract: The present invention provides a liquid discharging head comprising a substrate having a plurality of heat generating elements for generating a bubble in liquid and a grooved member having a plurality of grooves constituting a plurality of liquid passages and wherein the liquid passages for respective heat generating elements are formed by joining the grooved member to the substrate and further wherein the grooved member has an opening portion into which the substrate is inserted and the opening portion has the plurality of grooves which constitute the liquid passages for the respective heat generating elements when the substrate is inserted into the opening portion.

Abstract: A printing head has a plurality of heater boards, each of which includes a shift register to which printing data and selection data for selecting preheating pulse signals are applied as inputs, a latch circuit for latching the printing data, a selection-data latch circuit for latching the selection data, a selection circuit for selecting any one of a plurality of preheating pulse signals inputted in accordance with the latched selection data, and a plurality of heating resistors driven by the printing data or preheating pulse signals. Correction data, obtained by a head correcting apparatus, for performing printing at an average density by correcting the characteristics of each heater board is stored in a memory of the printing head. A printing apparatus decides the selection data in accordance with the correction data and sets the selection data in the selection-data latch circuit.

Abstract: A method for manufacturing liquid discharge heads is provided with discharge ports for discharging liquid, liquid flow paths communicated with the discharge ports for supplying liquid to the discharge ports, a substrate having heat generating members for creating bubbles in liquid, and movable members facing the heat generating members, each being arranged in each liquid flow path, having the free end on the discharge port side with a specific gap with the heat generating member. This method comprises the steps of forming the boundary layer used for providing a gap between the movable member and the substrate above the heat generating member on the substrate, of laminating the movable member on the boundary layer so as to position the free end above the heat generating member, at the same time fixing the movable member on the substrate, and of forming the gap between the movable member and the heat generating member by use of the boundary layer.

Abstract: A heat generating resistor comprised of a film composed of a TaN0.8-containing tantalum nitride material which is hardly deteriorated and is hardly varied in terms of the resistance value even upon continuous application of a relatively large quantity of an electric power thereto over a long period of time. A substrate for a liquid jet head comprising a support member and an electrothermal converting body disposed above said support member, said electrothermal converting body including a heat generating resistor layer capable of generating a thermal energy and electrodes being electrically connected to said heat generating resistor layer, said electrodes being capable of supplying an electric signal for demanding to generate said thermal energy to said heat generating resistor layer, characterized in that said heat generating resistor layer comprises a film composed of a TaN0.8-containing tantalum nitride material. A liquid jet head provided with said substrate for a liquid jet head.

Abstract: An ink containing apparatus for containing ink includes a negative pressure producing material; a first container for containing the negative pressure producing material, the first container having an air vent and a supply port for supplying the ink out; a second container for containing ink; a communication part for communication between bottom portions of the first and second containers; and ribs for introducing ambient air adjacent the air vent for introducing air into the communication part.

Abstract: An ink jet cartridge includes a first chamber for accommodating a negative pressure producing material and provided with air communication part for communication with ambient air, wherein a part of the negative pressure producing material does not contain ink adjacent the air communication part; a second chamber which is substantially closed except for a fine communication part for communication with the first chamber at a position away from the air communication part, wherein the second chamber directly accommodates the ink to be supplied to the first chamber.

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: An ink jet cartridge includes a first chamber for accommodating a negative pressure producing material and provided with air communication part for communication with ambient air, wherein a part of the negative pressure producing material does not contain ink adjacent the air communication part; a second chamber which is substantially closed except for a fine communication part for communication with the first chamber at a position away from the air communication part, wherein the second chamber directly accommodates the ink to be supplied to the first chamber.

Abstract: An ink container for containing ink to be supplied to an ink jet head, includes fibrous material; an ink discharge port for discharging the ink to the ink jet head; a portion for containing the fibrous material at least adjacent the ink discharge port; wherein the fibrous material is deformed within a degree of elasticity, forming a plurality of intersections in different directions, and contained in the containing portion.

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: The present invention provides a method for manufacturing a liquid discharge head comprising 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, wherein the method comprises a movable diaphragm forming step for providing the movable diaphragm in suc

Abstract: A plate type heat pipe comprises: a plate type container which includes a heat absorbing side and a heat dissipating side to form a hermetically sealed hollow portion; at least one heat transfer block which is thermally connected to each of inner walls of the heat absorbing side and the heat dissipating side; a wick which is placed along a side wall of the heat transfer block through the inner wall of the heat dissipating side; and a working fluid enclosed in the hollow portion. A securing member to secure the wick and the heat transfer block in close contact may be further included.

Abstract: A printing head has a plurality of heater boards, each of which includes a shift register to which printing data and selection data for selecting preheating pulse signals are applied as inputs, a latch circuit for latching the printing data, a selection-data latch circuit for latching the selection data, a selection circuit for selecting any one of a plurality of preheating pulse signals inputted in accordance with the latched selection data, and a plurality of heating resistors driven by the printing data or preheating pulse signals. Correction data, obtained by a head correcting apparatus, for performing printing at an average density by correcting the characteristics of each heater board is stored in a memory of the printing head. A printing apparatus decides the selection data in accordance with the correction data and sets the selection data in the selection-data latch circuit.

Abstract: The present invention provides a liquid discharging head comprising a substrate having a plurality of heat generating elements for generating a bubble in liquid and a grooved member having a plurality of grooves constituting a plurality of liquid passages and wherein the liquid passages for respective heat generating elements are formed by joining the grooved member to the substrate and further wherein the grooved member has an opening portion into which the substrate is inserted and the opening portion has the plurality of grooves which constitute the liquid passages for the respective heat generating elements when the substrate is inserted into the opening portion.

Abstract: A liquid ejecting head for ejecting liquid by generation of bubble includes an ejection outlet for ejecting the liquid; a liquid path in fluid communication with the ejection outlet; a bubble generation region for generating the bubble in the liquid; a movable member having a fulcrum and a free end and disposed faced to the bubble generation region; wherein the movable member moves from the first position to the second position by pressure produced by the generation of the bubble, and a resistance against movement of the movable member, is smaller adjacent the free end than adjacent the fulcrum.

Abstract: A liquid container for a liquid jet recording apparatus comprises a first chamber containing negative pressure producing material and having a liquid outlet connectable to a liquid jet head to supply liquid from the container to the liquid jet head and an air vent for allowing ambient air into the container, wherein the liquid outlet is provided in a bottom portion of the first chamber. A second chamber communicates with the first chamber by a communication path and is substantially hermetically sealed. A wall extends upwardly from the communication path of the first chamber. An ambient air introducing path is provided for between the wall and the negative pressure producing material extending from a point partly up the wall toward the communication path for introducing ambient air into the second chamber.

Abstract: An ink jet cartridge comprises a first chamber for accommodating a negative pressure producing material and having an air communication part for communication with ambient air, and a second chamber, substantially closed except for a liquid communication part, in communication with the first chamber, which second chamber contains a reservoir of ink to be supplied to the first chamber. A deformation prevention member is disposed within the second chamber thereby preventing or at least inhibiting deformation of the second chamber walls. A wall of the second chamber is 1.3 to 3 times as thick as a wall of the first chamber.

Abstract: A method for manufacturing ink jet recording heads includes the steps of forming a film of a first inorganic material in the form of ink flow path pattern using a soluble first inorganic material on the substrate having ink-discharge, pressure-generating elements formed thereon, forming a film of a second inorganic material becoming ink flow walls on the film of the first inorganic material using the second inorganic material, forming ink-discharge openings on the film of the second inorganic material above the ink-discharge, pressure-generating elements, and eluting the film of the first inorganic material.

Abstract: A liquid discharging method for discharging liquid, which uses the pressure exerted at the time of creating each of bubbles in liquid in a bubble generating area, is arranged to provide two bubble generating areas for generating bubbles in such a manner as to enable these areas to face each other at least partly, hence discharging liquid by means for the pressure thus exerted in the bubble generating areas. In this way, it becomes possible to increase the amount of liquid discharged, as well as to enhance the durability of the movable members, while stabilizing the discharge of liquid from each of the discharge openings.