Patent application number | Description | Published |
20090183368 | METHOD OF MANUFACTURING INK JET RECORDING HEAD - A method of manufacturing an ink jet recording head includes the steps of: forming an adhesive layers and the side walls of a flow path on a substrate; pasting a dry film, which is a part of a flow path forming member, on the side walls; and forming discharge ports in the layer. | 07-23-2009 |
20100147793 | METHOD FOR PRODUCING LIQUID DISCHARGE HEAD - The present invention provides a method for producing a liquid discharge head including a silicon substrate having, on a first surface, energy generating elements, and a supply port penetrating the substrate from the first surface to a second surface, which is a rear surface of the first surface of the substrate. The method includes the steps of: preparing the silicon substrate having a sacrifice layer at a portion on the first surface where the ink supply port is to be formed and an etching mask layer having a plurality of openings on the second surface, the volume of a portion of the sacrifice layer at a position corresponding to a portion between two adjacent said openings being smaller than the volume of a portion of the sacrifice layer at a position corresponding to the opening; etching the silicon substrate from the plurality of openings and etching the sacrifice layer. | 06-17-2010 |
20110020966 | METHOD FOR PROCESSING SILICON SUBSTRATE AND METHOD FOR PRODUCING SUBSTRATE FOR LIQUID EJECTING HEAD - A method for processing a silicon substrate includes preparing a first silicon substrate including an etching mask layer including first and second opening portions; forming a first recess in a portion of the silicon substrate corresponding to a region in the first opening portion; etching the silicon substrate by crystal anisotropic etching through the etching mask layer with an etching apparatus and an etchant, the etching proceeding in the first and second opening portions to form a through hole in a position corresponding to the first opening portion and to form a second recess in a position corresponding to the second opening portion; calculating an etching rate of the silicon substrate in terms of the etchant by using the second recess; and determining, by using the calculated etching rate, an etching condition for etching another silicon substrate with the etching apparatus after the etching of the first silicon substrate. | 01-27-2011 |
20110102511 | MANUFACTURING METHOD FOR INK JET RECORDING HEAD CHIP, AND MANUFATURING METHOD FOR INK JET RECORDING HEAD - A manufacturing method for a substrate for an ink jet head, including formation of an ink supply port in a silicon substrate, the method includes a step of forming, on one side of the substrate, an etching mask layer having an opening at a position corresponding ink supply port; a step of forming unpenetrated holes through the opening of the etching mask layer in at least two rows in a longitudinal direction of the opening; and a step of forming the ink supply port by crystal anisotropic etching of the substrate in the opening. | 05-05-2011 |
20110107598 | LIQUID EJECTION HEAD AND METHOD FOR MANUFACTURING LIQUID EJECTION HEAD - A liquid ejection head and a method of forming the same. The liquid ejection head includes a substrate, an ejection port, a liquid channel, and a supply port. The substrate has, above one side thereof, an energy generating element configured to generate energy used to eject liquid. The ejection port, from which a liquid is ejected, is located at a position corresponding to the energy generating element. The liquid channel communicates with the ejection port and penetrates the substrate from the one side to another side of the substrate. The supply port communicates with the liquid channel. The substrate has a projecting layer extending inward of an inner peripheral portion of an opening in the supply port in the one side, and the projecting layer and the energy generating element are formed of the same material. | 05-12-2011 |
20120026246 | LIQUID EJECTION HEAD AND METHOD FOR PRODUCING THE SAME - A liquid ejection head includes a substrate having an energy-generating device configured to generate energy used for ejecting a liquid from an orifice; a transparent channel wall member forming an inner wall of a channel leading to the orifice; and an intermediate layer disposed between and in contact with a surface of the substrate and the channel wall member and having a refractive index different from a refractive index of the channel wall member. The intermediate layer has a first outer end surface forming contours of a symbol as viewed in a direction from the orifice toward the substrate and making a first angle with the surface of the substrate and a second outer end surface facing the channel and making a second angle with the surface of the substrate. The first angle is an obtuse angle. The second angle is smaller than the first angle. | 02-02-2012 |
20120055022 | METHOD OF PRODUCING LIQUID EJECTION HEAD - The present invention provides a method of producing a liquid ejection head, the method including the steps of preparing a substrate having a flow-path-wall member; bonding the flow-path-wall member to a resin layer that is composed of a photo-curing resin and serves as an ejection port member such that spaces serving as the flow paths are provided inside; providing through-holes in the resin layer such that the spaces communicate with the outside air; exposing part of the resin layer; heating the exposed portion of the resin layer; and removing the unexposed portion from the heated resin layer to form the ejection ports, thereby forming the ejection port member in the resin layer. | 03-08-2012 |
20130288405 | METHOD OF MANUFACTURING LIQUID EJECTION HEAD - The method of manufacturing a liquid ejection head includes: forming a first protective layer on one surface of the substrate; forming the wiring layer on another surface of the substrate; forming the insulating layer on the wiring layer, and then partially removing the insulating layer to partially expose the wiring layer; forming the electrode pad on an exposed portion of the wiring layer; forming a flow path member on the another surface of the substrate; forming a second protective layer on the one surface of the substrate after the formation of the flow path member; and partially removing at least one of the first protective layer and the second protective layer, and then forming the supply port leading from the one surface of the substrate to the another surface of the substrate. | 10-31-2013 |
20140035999 | LIQUID EJECTION HEAD AND METHOD FOR MANUFACTURING LIQUID EJECTION HEAD - A liquid ejection head includes a print element board and an electric wiring board electrically connected to a bump of the print element board using an interconnecting wire. The bump has a first surface and a second surface. The height of the second surface from a surface of a base plate is higher than that of the first surface. The first surface has a protrusion formed therein, and the bump is connected to the interconnecting wire in the second surface. | 02-06-2014 |
20140061152 | METHOD FOR MANUFACTURING LIQUID EJECTION HEAD - A method for manufacturing a liquid ejection head includes the steps of: disposing an etching mask layer on a substrate having a first face and a second face that is on an opposite side of the first face, the etching mask layer being disposed on the second face; forming a concave line pattern at a region of the etching mask layer other than a region where an opening for the support port is to be formed; providing an etching opening at the etching mask layer; performing anisotropic etching from a side of the second face using the etching mask layer provided with the etching opening as a mask, thus forming the supply port at the substrate; comparing the line pattern with a recess generated at the substrate, thus selecting a device chip for liquid ejection; and connecting the selected device chip to a liquid supply part. | 03-06-2014 |
20140313261 | LIQUID EJECTION HEAD - A liquid ejection head includes: a substrate which has an energy-generating element that generates energy to be utilized for ejecting a liquid, and a supply orifice for supplying the liquid to the energy-generating element; and an ejection orifice forming member that has a plurality of ejection orifices through which the liquid is ejected, and at least one beam-like projection which projects toward the substrate and extends along an array direction of the ejection orifices at a position corresponding to the supply orifice; wherein a sectional area perpendicular to the array direction of the ejection orifices in the central part of the beam-like projection in the array direction of the ejection orifices is larger than a sectional area in the direction perpendicular to the array direction of the ejection orifices in both ends of the beam-like projection in the array direction. | 10-23-2014 |
20140340451 | DEVICE SUBSTRATE, LIQUID EJECTION HEAD, AND METHOD FOR MANUFACTURING DEVICE SUBSTRATE AND LIQUID EJECTION HEAD - A device substrate includes a substrate body having an energy generating device provided thereon, where the energy generating device generates energy for ejecting liquid, an ejection port forming member disposed on the substrate body, where the ejection port forming member has a pressure chamber that surrounds the energy generating device and an ejection port that communicates with the pressure chamber, and a supply port configured to supply the liquid to the pressure chamber. The ejection port forming member has a first surface that is in contact with the substrate body and a second surface other than the first surface, and the supply port is formed in the second surface. | 11-20-2014 |
20140362140 | LIQUID EJECTION HEAD - A liquid ejection head has an element substrate constituted of a substrate body having a plurality of energy generating elements for liquid ejection and a nozzle plate having a plurality of ejection ports arranged corresponding to the respective energy generating elements so as to form a plurality of ejection port rows each extending in a first direction, the rows being arranged side by side so as to expand in a second direction intersecting the first direction. The nozzle plate has also a groove section, or a plurality of hollow sections arranged to form a hollow section row, as extending in the first direction, at least between one of the opposite edges as viewed in the second direction of the nozzle plate and the ejection port row arranged close to the same edge. | 12-11-2014 |
20140368579 | LIQUID EJECTION HEAD AND METHOD FOR MANUFACTURING THE SAME - A liquid ejection head chip includes a liquid ejection unit having a plurality of ejection orifices for ejecting a liquid, a flow path in communication with the ejection orifices, and an energy generating element that generates energy for ejecting the liquid, the liquid ejection unit being provided on an upper surface formed of a (100) surface of a silicon single-crystal substrate. The side surfaces in at least one of two combinations of opposing side surfaces of the substrate have (111) surfaces of silicon single crystal and the angles of the (111) surfaces relative to the (100) surface are supplementary to each other. | 12-18-2014 |
20150062260 | LIQUID EJECTION HEAD AND PRINTING APPARATUS - There are provided a liquid ejection head and a printing apparatus capable of performing high-quality printing by suppressing the shrinkage stress of an adhesive joining a substrate and a flow path forming member and the deformation and peeling of the flow path forming member. A stress dispersing section | 03-05-2015 |
Patent application number | Description | Published |
20090097366 | OPTICAL DISC APPARATUS AND LENS SHIFT CORRECTION METHOD OF OPTICAL DISC APPARATUS - An optical disc apparatus includes a first lens shift amount detection unit which detects a first lens shift amount for a objective lens, on the basis of a push-pull signal which is generated in a state in which a main body of the optical disc apparatus is horizontally disposed, a memory unit which stores the first lens shift amount which is detected by the first lens shift amount detection unit, a second lens shift amount detection unit which detects a second lens shift amount for the objective lens on the basis of the push-pull signal at a time of recording/reproduction on/from an optical disc, and an addition unit which constantly adds to a tracking actuator of the objective lens a lens shift corresponding to a difference between the first lens shift amount stored in the memory unit and the second lens shift amount. | 04-16-2009 |
20090196134 | REPRODUCTION UNIT AND REPRODUCTION METHOD IN REPRODUCTION UNIT - According to one embodiment, a reproduction unit of a recording medium in which in a field where a pattern signal repeated by a fixed frequency is recorded, reproduction data is recorded so that an integral multiple of a minimum unit of a pattern thereof is a one-byte unit, the reproduction unit includes a detection section for defecting a minimum unit pattern from the pattern signal, a synchronization code determination section for determining a synchronization code following the pattern signal and predicting head timing of data following the synchronization code, a pattern forming section for forming an integral number of phase pattern signals from the minimum unit pattern detected by the detection section, and timing coincidence determination section for determining whether each of the integral number of phase pattern signals coincides with the head timing of the data predicted by the synchronization code determination section. | 08-06-2009 |
20090213704 | OPTICAL DISK APPARATUS AND SERVO CONTROL METHOD - According to one embodiment, an optical disk apparatus comprises an optical pickup which irradiates an optical disk with a light beam and receives reflected light from the disk, and a driving module which drives the pickup. The driving module includes an error detector which detects a tracking servo error with respect to a recording track on the disk from an output signal of the pickup and a tracking control module which performs tracking control over the pickup based on a servo error signal from the error detector. The control module is configured to temporarily set a tracking servo to an OFF state upon switching from a reproduction state to a recording state, measure an offset of the servo error signal, perform offset correction for the offset with respect to the servo error signal, and restore the tracking servo to an ON state after the offset correction. | 08-27-2009 |