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1. WO2020203907 - LIQUID EJECTING HEAD AND RECORDING DEVICE

Publication Number WO/2020/203907
Publication Date 08.10.2020
International Application No. PCT/JP2020/014355
International Filing Date 27.03.2020
IPC
B41J 2/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
135Nozzles
14Structure thereof
B41J 2/01 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
B41J 2/165 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
135Nozzles
165Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
Applicants
  • 京セラ株式会社 KYOCERA CORPORATION [JP]/[JP]
Inventors
  • 吉田 真人 YOSHIDA, Masato
Agents
  • 特許業務法人酒井国際特許事務所 SAKAI INTERNATIONAL PATENT OFFICE
Priority Data
2019-06709329.03.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) LIQUID EJECTING HEAD AND RECORDING DEVICE
(FR) TÊTE D’ÉJECTION DE LIQUIDE ET DISPOSITIF D'IMPRESSION
(JA) 液体吐出ヘッドおよび記録装置
Abstract
(EN)
A liquid ejecting head according to an embodiment of the present invention is provided with a flow passage member, a pressurizing portion, and a plurality of ejection holes. The flow passage member has a first surface and a second surface positioned on the opposite side to the first surface. The pressurizing portion is positioned on the first surface. The plurality of ejection holes are positioned in the second surface. The flow passage member has a water repellent film on the second surface. The water repellent film has protruding portions which protrude in a first direction, where the first direction is defined as the direction from the first surface toward the second surface. The protruding portions are positioned at the periphery of the ejection holes in a plan view of the second surface, and have an annular or arcuate shape in a plan view.
(FR)
Un mode de réalisation de la présente invention concerne une tête d'éjection de liquide, laquelle tête comporte un élément de passage d'écoulement, une partie de mise sous pression et une pluralité de trous d'éjection. L'élément de passage d'écoulement a une première surface et une seconde surface positionnée sur le côté opposé à la première surface. La partie de mise sous pression est positionnée sur la première surface. La pluralité de trous d'éjection sont positionnés dans la seconde surface. L'élément de passage d'écoulement a un film hydrofuge sur la seconde surface. Le film hydrofuge a des parties saillantes qui font saillie dans une première direction, la première direction étant définie comme la direction allant de la première surface vers la seconde surface. Les parties saillantes sont positionnées à la périphérie des trous d'éjection dans une vue en plan de la seconde surface, et ont une forme annulaire ou en forme d'arc en vue en plan.
(JA)
実施形態に係る液体吐出ヘッドは、流路部材と、加圧部と、複数の吐出孔とを備える。流路部材は、第1面および第1面の反対側に位置する第2面を有する。加圧部は、第1面上に位置する。複数の吐出孔は、第2面に位置する。流路部材は、第2面上に撥水膜を有する。撥水膜は、第1面から第2面に向かう方向を第1方向としたとき、第1方向に突出した凸部を有する。凸部は、第2面の平面視で吐出孔の周囲に位置し、平面視の形状が環状または弧状である。
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