Abstract:
A method for manufacturing a liquid jet head is provided which includes a flow channel board having at least pressure-generating chambers communicating with nozzle holes and a pressure generator above one surface that applies pressure for jetting liquid to the pressure-generating chambers, and a silicon single-crystal reservoir board having at least a reservoir section that communicates with the pressure-generating chambers and that is defined by a through hole passing through the reservoir board and a step with a riser formed so as to open up the through hole at one surface. In the method, a mask pattern having an opening is formed on a reservoir-forming board intended for the reservoir board. The opening has a correction pattern on its wall and a dummy mask pattern is formed in the opening. The correction pattern serves to expose a predetermined crystal plane of the reservoir-firming board to define the riser of the step. The dummy mask pattern has a plurality of separate mask portions and serves to substantially match the etching rate of the reservoir-forming board in the region opposing the correction pattern with the etching rate of the reservoir-forming board in the region opposing the opening of the mask pattern. The reservoir-forming board is anisotropically etched through the mask pattern having the correction pattern and the dummy mask pattern, so that the reservoir section having the step is formed.
Abstract:
A method of manufacturing a liquid ejection head includes a pressure chamber forming step of forming at least one of recess sections and through holes corresponding at least to the pressure chambers, in a plurality of calcined bodies obtained by calcining a plurality of ceramic green sheets; a piezoelectric body forming step of forming a plurality of films of piezoelectric bodies which constitute the piezoelectric elements by means of an aerosol deposition method, onto the calcined body corresponding to the diaphragm, of the plurality of calcined bodies; a laminating step of forming glass layers onto surfaces of the calcined bodies and arranging the calcined bodies to overlap each other; and a heating step of heating the arranged calcined bodies to a prescribed temperature, and simultaneously performing glass bonding of the calcined bodies and annealing of the piezoelectric bodies.
Abstract:
Provided are an inkjet printhead and a method of manufacturing the same. The inkjet printhead includes: a substrate including an ink feed hole; a chamber layer formed on the substrate and including a plurality of ink chambers in which ink supplied from the ink feed hole may be filled; and a nozzle layer formed on the chamber layer and including a plurality of nozzles through which ink may be ejected, wherein the chamber layer and the nozzle layer are respectively formed of cured products of a first negative photoresist composition and a second negative photoresist composition, wherein the first negative photoresist composition and the second negative photoresist composition include a bisphenol-A novolac epoxy resin represented by Formula 1; at least one epoxy resin selected from a first epoxy resin represented by Formula 2, and a second epoxy resin represented by Formula 3; a cationic photoinitiator; and a solvent.
Abstract:
A method of manufacturing an ink-jet head according to the present invention includes a step of providing a vibration plate in which grooves associated with respective pressure chambers are formed on a surface of the vibration plate, and a piezoelectric layer forming step of forming a piezoelectric layer by depositing particles of a piezoelectric material on the surface of the vibration plate on an opposite side of a channel unit. Since grooves corresponding to the grooves in the vibration plate are formed also in the piezoelectric layer, it is possible to reduce a cross talk between operating sections of the piezoelectric layer. Further, chip and crack is hardly developed in the piezoelectric layer.
Abstract:
Disclosed are an ink-jet head and a method of manufacturing the ink-jet head including a plurality of chambers, a membrane covering the plurality of chambers, and a plurality of actuators separated from one another by a virtual dividing line on the membrane such that pressure is applied to each of the plurality of chambers. The method in accordance with an embodiment of the present invention includes: forming a groove at a position on one surface of the membrane, the position corresponding to the position of the dividing line; bonding a piezoelectric member to the one surface of the membrane having the groove formed therein by using adhesive resin; and dividing the piezoelectric member such that the groove is exposed.
Abstract:
Disclosed is a method of manufacturing an inkjet head discharging ink. The method in accordance with an embodiment of the present invention can include: heating the inkjet head to a temperature over a melting point of a filler; filling the inkjet head with the filler such that a gap inside the inkjet head is filled with the filler; and discharging the filler out of the inkjet head such that the filler in the gap of the inkjet head remains.
Abstract:
An ink absorption member is inserted into a tank case and positioned to define an open space V between its bottom surface and the tank case bottom. Sequentially, then, one ink injection needle is inserted through the ink absorption member in the tank case until the tip enters the open space V. Thereafter, ink injection is begun by supplying ink through the injection needle tip. As this process proceeds, the open space V is filled with ink, the upper surface of which serves as an interface, parallel to the tank case bottom. This parallel state is maintained as the ink permeates the ink absorption member, so that the process can be uniformly completed. Further, since the open space V is filled first, the ink injection speed is not overly slow, when compared with a process during which ink is directly injected into the ink absorption member.
Abstract:
A method of manufacturing an inkjet printhead includes forming a heater and an electrode on a substrate, forming a flow path forming layer by coating a first negative photoresist composition on the substrate, forming a sacrifice layer, planarizing the flow path forming layer and the sacrifice layer, forming a nozzle layer by coating a second negative photoresist composition on the flow path forming layer, forming an ink feed hole in the substrate, and eliminating the sacrifice layer, wherein the first and second negative photoresist compositions include a prepolymer which comprises one selected from the group consisting of a glycidyl ether functional group, a ring-opened glycidyl ether functional group, and an oxytein functional group in a monomer repeat unit, and one selected from the group consisting of a phenol novolac resin-based backbone, a bisphenol-A-based backbone, a bisphenol-F-based backbone, and an alicyclic backbone; a cationic initiator; a solvent; and a plasticizer.
Abstract:
A liquid drop ejecting device includes a housing supporting a plurality of head units that are arranged in two rows to be partially overlapping along a main scanning direction in a staggered configuration. The head unit includes a flow path unit having an ink flow path, a piezoelectric actuator ejecting ink from nozzles in the flow path unit, and a reinforcement plate for reinforcing the flow path unit. In the reinforcement plate, a smaller-width portion and a larger-width portion are disposed along the main scanning direction, such that an end face of the smaller-width portion of the reinforcement member in one row contacts an end face of a reinforcement member in the adjacent row.
Abstract:
A manufacturing method of a liquid ejection head including an ejection outlet forming member provided with an ejection outlet for ejecting liquid and including a flow passage communicating with the ejection outlet is provided. The manufacturing method includes preparing a substrate on which a first flow passage wall forming member for forming a part of a wall of the flow passage and a solid layer having a shape of a part of the flow passage contact each other, wherein the first flow passage wall forming member has a height, from a surface of the substrate, substantially equal to that of the solid layer; providing a first layer formed of a negative photosensitive resin material; exposing to light a portion of the first layer for constituting the ejection outlet forming member; providing a second layer, on the first layer, formed of a negative photosensitive resin material; exposing to light a portion of the second layer for constituting a second flow passage wall forming member for forming another part of the wall of the flow passage; placing the exposed first layer and the exposed second layer on the solid layer and the first flow passage wall forming member so that a non-exposed portion of the second layer contacts the solid layer; forming a part of the flow passage and the ejection outlet by removing a non-exposed portion of the first layer and the non-exposed portion of the second layer above the substrate; and forming the flow passage by removing the solid layer.