LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS

    公开(公告)号:EP3461642A1

    公开(公告)日:2019-04-03

    申请号:EP18193948.9

    申请日:2018-09-12

    IPC分类号: B41J2/14 B41J2/18

    摘要: The liquid ejecting head (300) comprises a first individual flow path (28) and a second individual flow path (29) for supplying liquid to a pressure chamber (30), a first common flow path (18) for supplying liquid in common to the plurality of first individual flow paths, (28) and a second common flow path (19) for supplying liquid in common to the plurality of second individual flow paths (29). A first circulation for causing liquid to flow in the order of the first individual flow path, (28) the pressure chamber (30), and the second individual flow path (29) and second circulation for causing liquid to flow in the reverse order of the first circulation are switched. A flow path resistance of the first common flow path (18) is designed to be less than a flow path resistance of the second common flow path (19) and a flow path resistance of the first individual flow path (28) is designed to be less than a flow path resistance of the second individual flow path (29).

    METHOD FOR CONTROLLING LIQUID EJECTION APPARATUS

    公开(公告)号:EP3424728A1

    公开(公告)日:2019-01-09

    申请号:EP18182127.3

    申请日:2018-07-06

    IPC分类号: B41J2/175 B41J2/18 B41J2/185

    摘要: A liquid ejection apparatus includes a supply control section 401 that controls the supply and stop of a liquid to pressure chambers communicating with ejection ports to eject the liquid, and a negative pressure generating section 1004 that generates a negative pressure. The liquid ejection apparatus also includes a negative pressure control unit 230 using the negative pressure generated by the negative pressure generating section 1004 to adjust the pressure of the liquid flowing through a collection channel. To stop a flow of the liquid, the supply control section 401 stops the supply of the liquid, and then the negative pressure generating section 1004 is stopped.

    LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS

    公开(公告)号:EP3424718A1

    公开(公告)日:2019-01-09

    申请号:EP18176944.9

    申请日:2018-06-11

    IPC分类号: B41J2/14

    摘要: In a circulating system which circulates liquid within a liquid ejecting head (10), thickening of liquid in the vicinity of an ejection port (11, 21, 23, 26, 28, 30) can be more securely suppressed. The ejection port (11, 21, 23, 26, 28, 30) includes a first ejection port (11) disposed in an upstream side in an ejecting direction of ink and a second ejection port (21, 23, 26, 28, 30) disposed in a downstream side in the ejecting direction. The second ejection port (21, 23, 26, 28, 30) includes an enlarged diameter portion whose diameter is enlarged in a radially outward manner from at least a part of an opening edge portion of the first ejection port (11).

    LIQUID EJECTION APPARATUS AND LIQUID EJECTION HEAD

    公开(公告)号:EP3461643A1

    公开(公告)日:2019-04-03

    申请号:EP18196534.4

    申请日:2018-09-25

    摘要: A liquid ejection apparatus(1) includes an ejection port ejecting a liquid, a pressure chamber(123) storing the liquid, an element(115) generating energy for ejecting the liquid in the pressure chamber(123), first and second tanks(21, 22) which can store the liquid, a flow passage establishing communication between the first and second tanks(21,22) through the pressure chamber(123), a switching unit(4) switching a flowing direction of the liquid in the flow passage between a first direction from the first tank(21) to the second tank(22) and a second direction being opposite to the first direction, and a pressure compensation unit(37). When a pressure in a downstream side flow passage portion downstream of the pressure chamber(123) has a predetermined pressure or below, the pressure compensation unit(37) compensates for reduction in pressure in the downstream side flow passage portion by supplying the liquid to the downstream side flow passage portion.

    MEMBRANE ELECTRODE ASSEMBLY FOR POLYMER ELECTROLYTE FUEL CELL AND POLYMER ELECTROLYTE FUEL CELL
    5.
    发明公开
    MEMBRANE ELECTRODE ASSEMBLY FOR POLYMER ELECTROLYTE FUEL CELL AND POLYMER ELECTROLYTE FUEL CELL 审中-公开
    膜电极组件聚合物燃料电池和聚合物电解质型燃料电池

    公开(公告)号:EP2078319A1

    公开(公告)日:2009-07-15

    申请号:EP07830897.0

    申请日:2007-10-24

    发明人: YAMADA, Kazuhiro

    摘要: The present invention provides a membrane electrode assembly for a polymer electrolyte fuel cell, including: an electrolyte membrane; a catalyst layer; and a conductive porous gas diffusion layer, in which an interface between the catalyst layer and the electrolyte membrane is provided with a groove for allowing one of passage and retention of a fluid, and a polymer electrolyte fuel cell employing the membrane electrode assembly. As a result, there is provided at low costs the membrane electrode assembly for a polymer electrolyte fuel cell having improved drainage performance and the polymer electrolyte fuel cell employing the membrane electrode assembly and having stable power generation performance.

    LIQUID EJECTING HEAD
    6.
    发明公开

    公开(公告)号:EP3594001A1

    公开(公告)日:2020-01-15

    申请号:EP19180461.6

    申请日:2019-06-17

    IPC分类号: B41J2/14 F04B19/24

    摘要: Provided is a liquid ejecting head (100) including an element substrate (2) including: a common liquid chamber (10) connected to a liquid supply source; a pressure chamber (20) connected to the common liquid chamber and including inside an element (5) to generate energy used for ejecting liquid; a bubble generating chamber (30) connected to the common liquid chamber and including inside a pump (7) to cause a flow of the liquid; and a connection flow path (9) connecting the pressure chamber and the bubble generating chamber, in which the liquid ejecting head includes a first anti-cavitation film (6) over the element to generate the energy and a second anti-cavitation film (8) over the pump, and the first anti-cavitation film and the second anti-cavitation film have different film thicknesses.

    LIQUID EJECTING MODULE
    9.
    发明公开

    公开(公告)号:EP3421239A1

    公开(公告)日:2019-01-02

    申请号:EP18176449.9

    申请日:2018-06-07

    IPC分类号: B41J2/045 B41J2/155 B41J2/18

    摘要: The present invention provides a liquid ejecting module capable of performing stable ejection operation while circulating and supplying fresh ink to the vicinity of ejection ports arranged in high density. To achieve this, a liquid ejecting module (100) includes an element arranged face in which a plurality of ejecting elements are arranged, a circulation flow path including a supply flow path (5) which supplies liquid to a pressure chamber (3) and a collection flow path (6) which collects liquid from the pressure chamber (3), and a liquid conveying mechanism (8) provided in the circulation flow path for circulating liquid in the pressure chamber. The liquid conveying mechanism (8) is located lower than the element arranged face.

    LIQUID EJECTING APPARATUS AND CONTROL METHOD
    10.
    发明公开

    公开(公告)号:EP3421238A1

    公开(公告)日:2019-01-02

    申请号:EP18175938.2

    申请日:2018-06-05

    IPC分类号: B41J2/045 B41J2/155 B41J2/18

    摘要: In a configuration having a circulation flow path (7) in association with an ejection element (1), there is provided a liquid ejecting apparatus capable of circulating liquid suitably and maintaining stable ejection operation while reducing liquid vaporization, a power supply capacity, and the effect of noise. For this purpose, in a configuration in which liquid delivery mechanisms (12) that facilitate a flow in a flow path (7) are prepared in association with pressure chambers (3), the liquid delivery mechanisms (12) are divided into a plurality of blocks and the liquid delivery mechanisms (12) included in each of the blocks are driven at different timings.