摘要:
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.
摘要:
There is provided a liquid discharge head provided with an element substrate and a ceiling plate fixed in a mutually opposed state, plural liquid path lateral walls provided between the ceiling plate and the element substrate and defining plural light flow paths, plural discharge energy generating elements arranged in parallel on the surface of the element substrate so as to be respectively positioned in the plural liquid paths, plural movable members in the form of a beam supported at an end, provided on the element substrate so as to be respectively opposed to the plural discharge energy generating elements and provided with fixed ends at the upstream side in the liquid flowing direction in the liquid paths and free ends at the downstream ends, and plural projections provided on the ceiling plate for respectively limiting the amount of displacement of the plural movable members, the element substrate and the ceiling plate being composed of similar materials, wherein the liquid path lateral walls are formed on the element substrate, and, on the ceiling plate, there is provided an engaging layer having recesses for fitting with the upper end faces of the liquid path lateral walls.
摘要:
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.
摘要:
A substrate, for use in a liquid discharge head for discharging liquid by applying thermal energy thereto, is provided with a heat generating member for applying the thermal energy to the liquid and a movable member so positioned as to be opposed to the heat generating member, to be fixed at the upstream side in the flowing direction of the liquid and to have a free end at the downstream end. Two wiring layers for applying a voltage to the heat generating member are provided in a superposed manner with an interlayer insulation layer therebetween and are mutually connected electrically via a through-hole. The through-hole is provided in a position different from the boundary between a fixing portion and a movable portion of the movable member.
摘要:
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 removing said gap forming member.
摘要:
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. With this method, it becomes possible to set the ink-discharge, pressure-generating elements and the ink-discharge openings (ports) of each head with extremely high precision in a shorter distance with a good reproducibility to record images with higher quality and without any deformation of the head due to the applied heat, while providing a good resistance to ink and erosion, as well as a higher dimensional precision and reliability that may be affected otherwise by swelling or the like.
摘要:
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 forming the gap.
摘要:
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.
摘要:
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. With the structure thus arranged, there is no need for the step to position the movable member with the substrate, and also, the movable portion of the movable member is separated from the substrate after the movable member is formed on the substrate and incorporated in the liquid discharge head so as to implement arranging the interior of each liquid flow path finer and more precisely.
摘要:
A liquid discharge head 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 the liquid, and movable members facing the heat generating members and being arranged in the liquid flow paths. The movable members have a free end on the discharge port side with a specific gap with respect to the heat generating members. The movable member is fixed to the substrate above the heat generating member on the substrate.