Patent application number | Description | Published |
20090040264 | SUBSTRATE FOR INK JET PRINTING HEAD, INK JET PRINTING HEAD, INK JET PRINTING APPARATUS, AND METHOD OF BLOWING FUSE ELEMENT OF INK JET PRINTING HEAD - A fuse element can be reliably blown and data that corresponds to whether or not the fuse element has been blown can be stored with high reliability. A resistor element is provided in a circuit through which an electric current flows to blow the fuse element in the ink jet printing head. The resistor element adjusts the electric current so that, in the process of blowing the fuse element, the current continues to flow for a predetermined duration even after a maximum current has passed through the fuse element. The predetermined duration is longer than a period from a time point when the electric current rises to a time point when the electric current reaches the maximum current. | 02-12-2009 |
20100285617 | LIQUID DISCHARGE HEAD SUBSTRATE, LIQUID DISCHARGE HEAD USING THE SUBSTRATE, AND MANUFACTURING METHOD THEREFOR - Provided is a liquid discharge head substrate including: a substrate; a heating resistor layer formed on the substrate; a flow path for a liquid; a wiring layer stacked on the heating resistor layer and having an end portion which forms a step portion on the heating resistor layer; and a protective layer covering the heating resistor layer and the wiring layer including the step portion, and formed between the heating resistor layer and the flow path, in which the protective layer is formed by a Cat-CVD method. | 11-11-2010 |
20110056079 | INK JET RECORDING HEAD AND MANUFACTURING METHOD OF INK JET RECORDING HEAD - An ink jet recording head includes a substrate provided with an energy generating element to generate energy used for discharging ink, a discharge port through which the ink is discharged, a supply port for supplying the ink, and an ink path formed on the substrate for making the discharge port and the supply port communicate with each other, wherein wall members forming the ink path are made of an inorganic material, and a space between adjacent ink paths is filled up by a metal layer. | 03-10-2011 |
20110199421 | CIRCUIT BOARD FOR INK JET HEAD, INK JET HEAD HAVING THE SAME, METHOD FOR CLEANING THE HEAD AND INK JET PRINTING APPARATUS USING THE HEAD - In an ink jet head using a thermal energy for ejecting ink, this invention aims to reliably and uniformly remove kogations deposited on a heat application portion in contact with the ink. To realize this objective, the upper protective layer is arranged in an area including the heat application portion so that it can be electrically connected to serve as an electrode which causes an electrochemical reaction with the ink. The upper protective layer is formed of a material containing a metal which is dissolved by the electrochemical reaction and which does not form, on heating, an oxide film which hinders the dissolution. With this arrangement, a reliable electrochemical reaction can be produced to dissolve a surface layer of the upper protective layer, thereby removing kogations on the heat application portion reliably and uniformly. | 08-18-2011 |
20120105537 | CIRCUIT BOARD FOR INK JET HEAD, INK JET HEAD HAVING THE SAME, METHOD FOR CLEANING THE HEAD AND INK JET PRINTING APPARATUS USING THE HEAD - In an ink jet head using a thermal energy for ejecting ink, this invention aims to reliably and uniformly remove kogations deposited on a heat application portion in contact with the ink. To realize this objective, the upper protective layer is arranged in an area including the heat application portion so that it can be electrically connected to serve as an electrode which causes an electrochemical reaction with the ink. The upper protective layer is formed of a material containing a metal which is dissolved by the electrochemical reaction and which does not form, on heating, an oxide film which hinders the dissolution. With this arrangement, a reliable electrochemical reaction can be produced to dissolve a surface layer of the upper protective layer, thereby removing kogations on the heat application portion reliably and uniformly. | 05-03-2012 |
Patent application number | Description | Published |
20090309930 | INKJET PRINTHEAD SUBSTRATE, METHOD FOR MANUFACTURING INKJET PRINTHEAD SUBSTRATE, INKJET PRINT HEAD, AND INKJET RECORDING APPARATUS - An inkjet printhead substrate includes: a heat generating element configured to generate energy for ejecting ink; an electric wire electrically connecting the heat generating element and an electrode lead provided on a flexible film wiring substrate; a protecting film configured to protect the electric wire; an electrode pad to which the electrode lead is connected, the electrode pad being formed by providing an opening in the protecting film at a position above the electric wire; a region to which a sealing resin configured to protect an electrically connected portion of the electrode pad and the electrode lead is to be applied; and an ink-detecting electrode composed of a metal wire and formed at the region to which the sealing resin is to be applied. The metal wire has a smaller width than an opening provided in the protecting film from which the metal wire is exposed. | 12-17-2009 |
20090309933 | LIQUID EJECTING HEAD - A compact print head enabling high-quality, high-speed printing is provided. A liquid ejecting head includes: a substrate, having elements that generate energy used to eject liquid from ejection openings, and provided with a liquid supply port that communicates with a surface of the substrate having the elements and a opposite surface thereof; a member, provided above the surface of the substrate, and having walls of a liquid flow path that communicates with ejection openings and the supply port; an insulating layer, provided so as to cover the supply port, and provided with a plurality of through-holes; and a conducting layer electrically coupled to the elements, and provided within the insulating layer so as to be insulated with respect to the liquid. | 12-17-2009 |
20090315952 | SUBSTRATE FOR INK JET HEAD AND INK JET HEAD - A substrate for an ink jet head is provided with a plurality of energy generating members generating energy used for discharging an ink, an electrode pad which is arranged near a side of the substrate, and is for electrically connecting to an outside of the substrate, a plurality of electrode wirings for electrically connecting the plurality of energy generating members and the electrode pad, and a plurality of resistance elements which are respectively provided at the plurality of electrode wirings. Resistance values of the plurality of resistance elements differ from one another according to resistance values of the electrode wirings provided with the respective resistance elements. | 12-24-2009 |
20130314474 | SUBSTRATE FOR LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE HEAD - The reduction in reliably of a liquid discharge head due to the dissolution of a protective layer is suppressed. A substrate for a liquid discharge head includes a base substrate, a heat-generating resistive layer placed on the base substrate, a pair of lines placed on the base substrate, and a protective layer covering the heat-generating resistive layer and the lines. The protective layer contains a material represented by the formula Si | 11-28-2013 |
20140013600 | MANUFACTURING METHOD OF SUBSTRATE FOR LIQUID EJECTION HEAD - Provided is a method for manufacturing a substrate for liquid ejection head including an ejection energy generating element and a nozzle layer including an ejection port and a liquid channel. The method includes the steps of: forming, on the substrate including the element, a metal mold member made of metal and having a flat surface, the metal mold member making up at least a part of a mold for the liquid channel, and a planarization layer made of the metal and having a flat surface to planarize a surface of the nozzle layer; coating the mold for the liquid channel and the planarization layer with negative-type photosensitive resin, thus forming a negative-type photosensitive resin layer to be the nozzle layer; exposing the resin layer to ultraviolet rays, thus forming the ejection port; and selectively removing the mold for the liquid channel, thus forming the liquid channel. | 01-16-2014 |
20140030427 | METHOD OF MANUFACTURING LIQUID EJECTION HEAD - A method of manufacturing a liquid ejection head includes forming, on the substrate, a metal layer formed of a first metal, forming a liquid flow path pattern formed of a second metal that is a metal of a different kind from that of the first metal and that is dissolvable in a solution that does not dissolve the first metal, the liquid flow path pattern being formed on at least a part of a surface of the metal layer, covering the metal layer and the pattern with an inorganic material layer to be formed as the nozzle layer, forming the ejection orifices in the inorganic material layer, and removing the pattern by the solution. A standard electrode potential E | 01-30-2014 |
20140184703 | SUBSTRATE FOR INKJET HEAD, INKJET HEAD, AND INKJET PRINTING APPARATUS - There are provided a substrate for an inkjet head, an inkjet head, and an inkjet printing apparatus wherein in a case where current is carried through a protection layer for heating resistors, electrical connection to its periphery is prevented without fail. The substrate for the inkjet head includes a first protection layer disposed to cover a heating resistor layer and having an insulation property and a second protection layer disposed to contact the first protection layer and having conductivity. The second protection layer includes a plurality of individual sections provided to correspond to the plurality of heating resistors, a common section connecting the plurality of individual sections, and fuse sections connecting the individual sections and the common section, the fuse sections being formed to be thinner than the individual sections. | 07-03-2014 |