| 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 |
| 20090315954 | LIQUID EJECTION HEAD - On the liquid ejection head substrate, an upper protective layer, as well as coming into contact with the resin layer which configures a path forming member such as a ejection opening, comes into contact with ink in an heat generating portion inside the channel formed. The upper protective layer contains iridium and silicon. The upper protective layer is configured so that, at a surface in contact with the ink and resin layer, Ir | 12-24-2009 |
| 20090315956 | LIQUID EJECTION HEAD AND METHOD OF MANUFACTURING THE LIQUID EJECTION HEAD - To provide a print head that simplifies the manufacture process of a print head and reduces the manufacturing cost while preventing the peeling-off between a substrate and a flow passage forming member in the print head, and a method of manufacturing the print head. In the print head of the present invention, a protective layer is formed in a flow passage forming member side portion in a heat generating portion | 12-24-2009 |
| 20100079551 | SUBSTRATE FOR LIQUID DISCHARGE HEAD, METHOD OF MANUFACTURING THE SAME, AND LIQUID DISCHARGE HEAD USING SUCH SUBSTRATE - The invention provides a substrate for a liquid discharge head having a heat generating resistor layer, wiring electrically in contact with the heat generating resistor layer, an insulating protection layer that covers the heat generating resistor layer and the wiring, and a liquid passage that are formed in order on an insulating layer formed on a base plate. The insulating protection layer being a layer formed by radical shower CVD. | 04-01-2010 |
| 20100220154 | BASE FOR LIQUID DISCHARGE HEAD, AND LIQUID DISCHARGE HEAD USING THE SAME - A base for a liquid discharge head includes a heat element which forms an exothermic portion | 09-02-2010 |
| 20100245486 | RECORDING ELEMENT SUBSTRATE, METHOD OF MANUFACTURING THE RECORDING ELEMENT SUBSTRATE, AND LIQUID EJECTION HEAD - A recording element substrate includes a substrate; an insulating layer disposed on the substrate; a plurality of heating portions which are arranged on the insulating layer and which produce thermal energy used to eject a liquid; and a plurality of heat conduction members, each being located between adjacent heating portions with respect to an arrangement direction of the heating portions, the heat conduction members being located between the substrate side principal surface of the insulating layer and the heating portion side principal surface of the insulating layer and having higher thermal conductivity than the insulating layer. The heat conduction members are in contact with a heat conduction layer which has higher thermal conductivity than the insulating layer. | 09-30-2010 |
| 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 |
