Seiko Epson Corporation

Hiroyuki Ishii

Hiroshige Owaki

Hiroyuki Hagiwara

Katsuhiro Okubo

Ryota Kinoshita

Shunsuke Watanabe

Takahiro Kanegae

Katsumi Enomoto

Hiroaki Okui

Hiroyuki Kobayashi

Shigeki Suzuki

Munehide Kanaya

Isamu Togashi

Taiki Hanagami

Daisuke Hiruma

Yasushi Yajima

Ryo Hamano

Norihito Harada

Akihiro Satake

Masayuki Eguchi

Nobuyuki Hayasaka

A liquid ejecting apparatus includes a first head having a first channel pipe, a channel member having a second channel pipe, and a first tube that communicates the first channel pipe with the second channel pipe and that has flexibility. The first tube has a first end portion and a second end portion that is opposite to the first end portion. The first tube is coupled to the first channel pipe in such a manner that the first end portion covers an outer periphery of the first channel pipe. The first tube is also coupled to the second channel pipe in such a manner that the second end portion covers an outer periphery of the second channel pipe. A fixation strength between the first tube and the first channel pipe is greater than a fixation strength between the first tube and the second channel pipe.

Liquid ejecting apparatus

A pressure controlling apparatus includes a seat having a communication hole through which a first space and a second space, in which a liquid flows, are in communication with each other, a pressure receiving plate configured to move with a change in pressure in the second space, a valve member configured to open and close the communication hole in conjunction with the movement of the pressure receiving plate, and a biasing member disposed between the pressure receiving plate and the seat and configured to bias the pressure receiving plate. The biasing member includes a first portion in contact with the pressure receiving plate and a second portion positioned closer than the first portion to the seat. The first portion has a larger diameter than the second portion.

Pressure controlling apparatus and liquid ejecting apparatus

A wall-shaped enclosure that forms a space which can accommodate a head chip is formed in a projecting manner at a lower end of a lower case member. Since a cylindrical thick part is formed at the lower end of the lower case member, the lower case member is unlikely to be bent, particularly around the wall-shaped enclosure and a part where the wall-shaped enclosure is disposed. The head chip that is disposed in the space of the lower case member which is unlikely to be bent is unlikely to be subjected to an external force, and the cover member absorbs torsion generated between the head chip and the lower case member so that the head chip is even more unlikely to be subjected to the external force.

Liquid ejecting head and liquid ejecting apparatus

A flow channel structure includes a first flow channel chamber to which an ink is supplied, a first sealing body that configures a wall face of the first flow channel chamber, a valve body that controls flow and blocking of the ink in accordance with deformation of the first sealing body, a second flow channel chamber that communicates with the first flow channel chamber, and a second sealing body that configures a wall face of the second flow channel chamber, in which the rigidity of the second sealing body is greater than the rigidity of the first sealing body.

Flow channel structure and liquid ejecting apparatus

A liquid ejecting head unit includes a liquid ejecting head that ejects liquid through a nozzle formed in a nozzle surface, and a holding member to which the liquid ejecting head is attached. Further, in the liquid ejecting head unit, the holding member includes a holder that supports the liquid ejecting head in a predetermine direction which is different from a direction of the nozzle surface of the liquid ejecting head, and a base portion that sticks out from the holder to a side which is parallel to the predetermined direction.

Liquid ejecting head unit and liquid ejecting apparatus

A liquid ejecting head includes a liquid ejecting head main body that has a nozzle group that is formed by arranging a plurality of nozzles, which eject a liquid, in parallel, and that ejects a liquid from each nozzle, and a fixation member to which the liquid ejecting head main body is fixed. The fixation member has a fixation part to which the liquid ejecting head main body is fixed and a reference surface that is formed on a side opposite fixation part, and which includes a reference part serving as reference for a positioning the liquid ejecting head main body with respect to an installation target, and a position adjusting part adjusting the relative position between the reference surface and the nozzle group is provided between the liquid ejecting head main body and the fixation part.

Liquid ejecting head, liquid ejecting head unit, liquid ejecting apparatus, and method of manufacturing liquid ejecting head unit

A liquid ejecting apparatus includes a liquid ejecting head which includes a manifold; a first flow path and a second flow path which are connected to the manifold; a switching unit which switches a communication state between a liquid storage unit and the respective first and second flow paths; a pressure regulating unit which includes a valve which is open due to negative pressure on the manifold side of the first flow path; and a control unit which controls the switching unit, in which the control unit is capable of performing switching between a first mode in which liquid is supplied to the manifold through the valve and a second mode in which liquid is supplied to the manifold without going through the valve.

Liquid ejecting apparatus and control method thereof

A filter unit including a liquid flow path through which ink flows and a filter chamber which forms a portion of the liquid flow path and is filled with a pressurized ink includes a filter unit main body and a second cover member which include the liquid flow path and form the filter chamber; and a filter which is disposed within the filter chamber, the second cover member being provided with a protruding portion in a region which opposes the filter, and the protruding portion being provided between a supply port of the ink which is supplied to the filter chamber and a discharge port of the ink which is discharged from the filter chamber in plan view in relation to the filter.

Filter unit, liquid ejecting head, and liquid ejecting apparatus

A cover member is fixed to a head chip in an area in the vicinity of a nozzle plate but does not constitute a communication path, and thus causes no liquid leakage. The head chip discharges droplets of a discharge liquid that is supplied via the communication path which is formed from nozzles thereof without depending on the cover member. A surface of the nozzle plate is positioned on a side further apart from a printing medium than from a surface of the cover member and is surrounded. As a result, abutting of the printing medium against a side surface of the nozzle plate is avoided.

A liquid ejecting head unit includes: a liquid ejecting head that has a fixing face to be used for attachment and that ejects a liquid from a nozzle; a head fixing member that has stiffness higher than that of the fixing face and that is secured to the fixing face on the liquid ejecting head; and a support member that has an attachment face to which the liquid ejecting head is attached through the head fixing member.

Liquid ejecting head unit, liquid ejecting apparatus, and liquid ejecting head set

A method of manufacturing a flow path member includes inserting the first flow path member into each concave portion of the second flow path member and welding the first flow path member and the second flow path member in a circumferential direction of a region where the first flow path and the second flow path communicates each other; and providing two or more injecting portions which are provided with a gap wider than a gap between a wall surface of the concave portion which faces the first flow path member and a circumference surface of the first flow path member inserted into each concave portion which faces the wall surface, communicate with each concave portion, and are opened to the same side as the concave portion to have a concave shape to each concave portion in the second flow path member.

Method of manufacturing flow path member, flow path member, liquid ejecting head and liquid ejecting apparatus

A recording head which ejects ink and a sub carriage, which has a head insertion opening where the recording head is inserted and the recording head is fixed to an opening edge portion of the head insertion opening, are provided and a box beam section is provided in the opening edge portion. The box beam section is configured from a first wall section which has a side surface which faces the head insertion opening, a second wall section which is positioned further to the outside than the first wall section and opposes the first wall section, and a third wall section which connects the first wall section and the second wall section.

A liquid ejecting apparatus includes a liquid ejecting head unit including a plurality of liquid ejecting heads in a parallel arrangement. Each liquid ejecting head ejects a liquid from nozzles formed in a nozzle face toward an ejection target object in accordance with a drive signal from a controller. Each liquid ejecting head has an individual two-dimensional code that includes at least a portion of information related to the liquid ejecting head. The liquid ejecting head unit includes a collective two-dimensional code that includes arrangement information of the liquid ejecting heads in the liquid ejecting head unit and collective information related to the information included in the individual two-dimensional codes.

A liquid ejecting apparatus includes a liquid ejecting head unit having a plurality of liquid ejecting heads that ejects liquid from nozzles. The liquid ejecting head unit has a head fixing member that fixes a plurality of the liquid ejecting heads in a row with gaps between the heads. The head fixing member has an opening at a frame section, and fixes a plurality of the liquid ejecting heads that are inserted into the opening in a state where at least one portion of each of the nozzle plates protrudes through the opening. Partition plates are arranged between the liquid ejecting heads in the frame section in a row with the liquid ejecting heads across the opening. A portion of each of the partition plates protrudes from the bottom of the frame section.

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Shiojiri, Japan

Hiroyuki Ishii