Patent application number | Description | Published |
20100007698 | LIQUID EJECTION HEAD AND PROCESS FOR PRODUCING THE SAME - An aspect of the present invention is a process for producing a liquid ejection head including an ejection orifice member provided with ejection orifices for ejecting liquid. The process includes supplying to a surface of a base material for forming the ejection orifice member a mixture of a first composite for imparting a hydrophobic characteristic to the surface and a second composite being able to exhibit a hydrophilic characteristic by being irradiated with light; imparting a hydrophobic characteristic to the entire or a part of the surface by utilizing the first composite; and then irradiating the second composite with light in a partial region of the surface for imparting a hydrophilic characteristic to the region irradiated with the light. | 01-14-2010 |
20100156994 | LIQUID EJECTION HEAD AND RECORDING APPARATUS INCLUDING THE SAME - A liquid ejection head includes a housing having a first outer surface; a liquid ejection substrate disposed at a first portion of the first outer surface and having ejection ports for ejecting liquid; and a wiring member disposed on a second portion of the first outer surface so as to be next to the liquid ejection substrate and electrically connected to the liquid ejection substrate. The ejection ports are covered by a cap that is in contact with the wiring member and a portion, except the second portion, of the first outer surface around the liquid ejection substrate; and the second portion is recessed relative to the portion, except the second portion, of the first outer surface around the liquid ejection substrate. | 06-24-2010 |
20100255422 | MANUFACTURING METHOD OF LIQUID DISCHARGE HEAD - A manufacturing method of a liquid discharge head having a liquid flow path which communicates with a discharge port for discharging liquid, includes: providing a first layer made of a first photosensitive resin on a substrate; forming a mold of the flow path from the first layer by exposing a part of the first layer and developing the first layer; applying a light absorbent to a surface of the mold; providing a second layer made of a second photosensitive resin to coat the mold applied with the light absorbent; forming an opening that is to be the discharge port in the second layer by exposing a part of the second layer with light having a wavelength that can be absorbed by the light absorbent and developing the second layer; and forming the flow path by removing the mold. | 10-07-2010 |
20120229556 | PHOTOSENSITIVE RESIN COMPOSITION, METHOD FOR MANUFACTURING STRUCTURAL BODY, AND LIQUID DISCHARGE HEAD - A photosensitive resin composition includes: a cation polymerizable compound; a photoacid generator having an anion portion represented by the formula 1 and a cation portion, | 09-13-2012 |
20120292412 | PHOTOSENSITIVE RESIN COMPOSITION, METHOD FOR PRODUCING STRUCTURE, AND LIQUID DISCHARGE HEAD - A photosensitive resin composition includes (a) a compound polymerizable in the presence of an acid, and (b) a photoacid generating agent including an onium salt having a cationic part structure represented by formula (b1) below and an anionic part structure represented by formula (b2) below, wherein the component (b) absorbs 50% or more of the amount of 365 nm wavelength light absorbed by the photosensitive resin composition, | 11-22-2012 |
20120306961 | NEGATIVE PHOTOSENSITIVE RESIN COMPOSITION, PATTERN FORMATION METHOD, AND LIQUID DISCHARGE HEAD - A photosensitive resin composition includes a cationically polymerizable compound, a photoacid generating agent having an anion portion and a cation portion, and a salt having a cation portion having either one of a quaternary ammonium structure and a quaternary phosphonium structure and an anion portion, wherein the anion portion of the salt is exchanged with the anion portion of a first acid derived from the anion portion of the photoacid generating agent to form a second acid having acid strength that is lower than acid strength of the first acid. | 12-06-2012 |
20130235119 | PHOTOSENSITIVE NEGATIVE RESIN COMPOSITION - The invention provides a photosensitive negative resin composition containing (a) an epoxy-group-containing compound, (b) a first onium salt containing a cation portion structure represented by (b1) and an anion portion structure represented by (b2), and (c) a second onium salt containing a cation portion structure represented by (c1) and an anion portion structure represented by (c2). | 09-12-2013 |
20140329175 | PHOTOSENSITIVE NEGATIVE RESIN COMPOSITION, FINE STRUCTURE, PRODUCTION PROCESS OF FINE STRUCTURE AND LIQUID EJECTION HEAD - A photosensitive negative resin composition containing a resin (a) having at least three cyclohexene oxide skeletons in its molecule, an onium salt (b) composed of a cation moiety structure represented by the formula b1 defined in the description and an anion moiety structure represented by the formula b2 defined in the description, a silane compound (c) and an organic solvent (d). A fine structure using the resin composition, a production process of the fine structure and a liquid ejection head. | 11-06-2014 |