Seiko Epson Corporation

Hiroshige Owaki

Katsuhiro Okubo

Munehide Kanaya

Hiroyuki Kobayashi

Hiroyuki Hagiwara

Takahiro Kanegae

Hiroyuki Ishii

Shigeki Suzuki

Hisashi Miyazawa

Takeo Seino

Satoshi Nakata

Masaki Shimomura

Yoshihiro Koizumi

Yasuto Sakai

Satoshi Shinada

Yoshinao Miyata

Haruhisa Uezawa

Shunsuke Watanabe

Yoshinori Nakajima

Isao Yanagisawa

Kazutoshi Goto

Katsumi Enomoto

Ryota Kinoshita

Yasuo Inaoka

Hiroyuki Kamikura

Yoshihiro Igarashi

Hiroshi Satoh

Kazuhide Nakamura

Takayuki Iijima

Seiya Sato

Takayoshi Katsumura

Atsushi Muto

Hironori Matsuoka

Fujio Akahane

Tsuyoshi Kitahara

Tomoaki Takahashi

Yuma Fukuzawa

Noriaki Okazawa

Hiroaki Okui

Koichi Saito

Nagamitsu Takashima

Yusuke Mizutaki

Shingo Tomimatsu

Fumiya Takino

Satoshi Nakajima

Takashi Kato

Tomohiro Yuda

Tomohito Nakano

Toshinobu Yamazaki

Nobuaki Azami

Motonori Okumura

Kentaro Murakami

Mikio Kitagishi

Yoshiki Sugawara

Wataru Ito

Hirokazu Ono

Wataru Takahashi

Makoto Otsuki

Masayuki Eguchi

Ryosuke Tsuchihashi

Yasuto Kanai

Kenji Tsuchiya

Kazuyoshi Imai

Toshiaki Kori

Hiroki Honma

A liquid ejecting head including a nozzle configured to eject a liquid, a liquid flow path communicating with the nozzle, a communication chamber including a communication port configured to communicate with atmospheric air, a partitioning wall portion provided between the liquid flow path and the communication chamber, the partitioning wall portion including an opening portion that communicates the liquid flow path and the communication chamber to each other, and an elastic member closing the opening portion.

Liquid ejecting head, liquid ejecting apparatus, flow path structure, and method of manufacturing liquid ejecting head

A liquid ejecting unit including a flow path structure into which a liquid flow from a liquid reservoir that temporarily stores the liquid, a liquid ejecting head coupled to the flow path structure and including a nozzle for ejecting the liquid supplied from the flow path structure, and a heating portion heating the liquid inside the flow path structure.

Liquid ejecting unit and liquid ejecting apparatus

A liquid ejecting head includes a plurality of driving elements that causes an ejection of a liquid from a nozzle by causing a fluctuation in a pressure, a sealing body that seals a first space for accommodating the plurality of driving elements, a case member that forms a second space for surrounding the sealing body, an atmosphere vent that is formed in the case member and through which the second space communicates with the air, a communication hole that is formed in the sealing body and through which the first space communicates with the second space, and a moisture absorbent disposed in the second space.

Liquid ejecting head and liquid ejecting apparatus

A control method of a liquid ejecting apparatus is provided. The liquid ejecting apparatus includes a liquid ejecting head for ejecting a liquid in an inner-space thereof through a nozzle, an inflow-channel for flowing the liquid into the inner space, an outflow-channel for flowing the liquid out of the inner space, and a valve for the inflow-channel. The control method includes first control of opening the inflow-channel by opening the valve in accordance with a negative pressure on a downstream side of the valve to generate a liquid flow from the inflow-channel to the outflow-channel, second control of opening the inflow-channel by opening the valve by an external force to generate the liquid flow from the inflow-channel to the outflow-channel, and performing the second control, in accordance with a flow amount of the liquid flow, to open the valve under the first control.

Liquid ejecting apparatus and control method of liquid ejecting apparatus

A liquid ejecting apparatus includes a liquid path comprising a filter and a liquid storing chamber for supplying liquid to a liquid ejecting head. The liquid storing chamber has an inlet, a bubble retention space disposed above the inlet, a bottom disposed below the bubble retention space, and a first outlet and a second outlet. (i) The first outlet is located on one side of an imaginary center line passing through the center of a projected area, and the second outlet is located on the other side of the imaginary center line. Alternatively, (ii) the first outlet and the second outlet are located outside a projected area defined by projecting the bubble retention space onto the bottom.

Liquid ejecting apparatus and method of driving the same

A liquid ejecting head includes a pressure chamber that communicates with a nozzle which ejects liquid, a liquid chamber that communicates with the pressure chamber, a flexible compliance member that defines a portion of the liquid chamber, and a pressure adjusting mechanism that adjusts a supply pressure of liquid supplied to the liquid chamber. The pressure adjusting mechanism can adjust displacement of the compliance member.

Liquid ejecting head, liquid ejecting apparatus, and control method for liquid ejecting apparatus

A water-based ink includes a pigment, and water, in which a viscosity at 20&#xb0; C. is in a range of 2 mPa&#xb7;s to 7 mPa&#xb7;s, and a yield value at 20&#xb0; C. is less than 0.2 mPa, and the yield value at 20&#xb0; C. when evaporating 25% of the water is less than 0.8 mPa.

Water-based ink composition and method of discharging liquid droplet

A liquid ejecting head includes a pair of connectors that can be connected to each other, a flexible circuit on which one of the connectors is mounted, a circuit board on which another one of the connectors is mounted, a driver element that generates a driving force for ejecting liquid from a nozzle in response to an electric signal that is supplied from the flexible circuit to the circuit board via the pair of connectors, and a locking mechanism that locks connection between the connector of the circuit board and the connector of the flexible circuit.

Liquid ejecting head with connection mechanism for a flexible circuit and circuit board

A liquid discharge device includes a liquid discharge head that includes a nozzle from which liquid is discharged and a liquid channel communicating with the nozzle, and that discharges liquid from the nozzle. The nozzle has an inner wall surface having an uneven pattern including a recess where the inner diameter of the nozzle is increased and a projection where the inner diameter of the nozzle is smaller than that in the recess. In a case where ink is continuously discharged from an identical nozzle, at a time when a meniscus in the nozzle after previous discharge is located closer to an initial position before discharge than a center position between the initial position and a position at which the meniscus is most greatly drawn toward the liquid channel, subsequent discharge is performed.

Liquid discharge device, method for controlling liquid discharge device, and device driver

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.

A liquid ejecting head unit includes: a fixing plate provided with a plurality of openings; a plurality of heads, each of which is provided for each of the openings; and a channel holder that is provided with a plurality of channels and that accommodates the plurality of heads in cooperation with the fixing plate. Each of heads has a nozzle plate provided with a nozzle row having a plurality of nozzles. The head is fixed to a first surface of the fixing plate. An ejection surface is defined by a second surface of the fixing plate and the nozzle plate. The fixing plate has a plurality of sets, each of which has the plurality of openings. Only a part of the openings constituting each of the sets are disposed to be overlapped in a second direction, and the openings are disposed not to be overlapped in a first direction.

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

A liquid ejecting head includes a first nozzle row in which nozzles which eject a liquid are juxtaposed along a first direction, first drive elements which cause the liquid to be ejected from each nozzle of the first nozzle row, a plurality of first individual wirings which are connected to the first drive elements, a first common wiring which is connected in common to the first drive elements, a second nozzle row in which nozzles are juxtaposed along the first direction, second drive elements which cause the liquid to be ejected from each nozzle of the second nozzle row, a plurality of second individual wirings which are connected to the second drive elements, and a second common wiring which is connected in common to the second drive elements and is not connected to the first common wiring. The plurality of first individual wirings, the first common wiring, the second individual wirings, and the second common wiring are connected to a common flexible cable.

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

A liquid ejecting apparatus includes a plurality of head units, in each of which a plurality of recording heads are disposed so as to be aligned in a main scanning direction in a holding member as a frame body, and a plurality of nozzle openings for discharging ink being disposed in a sub scanning direction in each recording head. The head units are aligned such that center lines thereof in the main scanning direction differ from each other in the main scanning direction. M (M is a natural number) liquid ejecting heads are attachable to each holding member in the main scanning direction. N (M&#x3e;N (N is a natural number)) liquid ejecting heads, which discharge liquid, among the M liquid ejecting heads are arranged so as to be close to a center side of an entire width of the head units in the main scanning direction.

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 generating chambers communicating with nozzles, a manifold communicating with the pressure generating chambers, a flexible member that has a compliance region, which is able to perform deflection in response to pressure fluctuation in the manifold, a compliance space disposed on a side opposite to the manifold through the flexible member, a cap member facing the flexible member through the compliance space; a frame-like member disposed between the flexible member and the cap member, and an island-like member to be disposed in the compliance region and separated from the frame-like member. One surface of the frame-like member faces the flexible member and the other surface faces the cap member. In a direction in which the flexible member and the cap member face each other, the island-like member is thinner in thickness than the frame-like member.

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Okaya, Japan

Hiroshige Owaki