Canon Kabushiki Kaisha

Sayaka Seki

Naoko Tsujiuchi

Yuichiro Akama

Yuji Tamaru

Kyosuke Toda

Yosuke Takagi

Yasuaki Kitayama

Kiyomitsu Kudo

Satoshi Kimura

Tomotsugu Kuroda

Keiichiro Tsukuda

Ryo Sato

Kenji Yabe

Shimpei Yoshikawa

Hiroki Tajima

Yusuke Hashimoto

Takanobu Manabe

Naoko Shimizu

Genji Inada

Atsushi Omura

Junji Tatsumi

Kazuhiko Okito

Kazuhiro Idogawa

A liquid ejection head includes an element substrate having an energy-generating element configured to generate an energy for ejecting a liquid from an ejection orifice, a support member for supporting the element substrate, the support member including a liquid chamber formed therein to supply the liquid to the ejection orifice, and a damper portion for absorbing vibration of the liquid inside the liquid chamber, the damper portion being flexible. The support member has a through-hole for communicating with the liquid chamber at a position located above the liquid chamber in a vertical direction when the liquid ejection head is in a use orientation. The damper portion has a taper portion that tapers downwardly in the vertical direction and is positioned in such a manner that the tapering portion closes the through-hole, and the damper portion and the support member are attached to each other by a fixing member.

Liquid ejection head and manufacturing method of liquid ejection head

A liquid filling method of filling a liquid storage device including a first tank that stores a liquid to be supplied to an ejection head ejecting the liquid and a second tank that stores the liquid to be supplied to the first tank through a connection port provided in the first tank with the liquid, the method including: injecting the liquid from a liquid storage container into the first tank through a first liquid introduction port provided in the first tank, in a state where a second liquid introduction port provided in the second tank is closed.

Liquid storage device and liquid filling method

A liquid ejection apparatus includes: a recording head that ejects liquid; a sub-tank that is connected to the recording head and temporarily stores the liquid to be supplied to the recording head; a liquid tank that communicates with the sub-tank and is able to be filled with the liquid; a first atmosphere opening unit that is provided in the liquid tank; and a second atmosphere opening unit that is provided in the sub-tank. The second atmosphere opening unit is closable when the liquid tank is filled with the liquid, and the first atmosphere opening unit and the second atmosphere opening unit are able to open the liquid tank and the sub-tank to the atmosphere, respectively, when the sub-tank is filled with the liquid filled in the liquid tank by a hydraulic head pressure.

Liquid ejection apparatus and liquid filling method

There is provided a method for manufacturing a liquid discharge head including a liquid discharge head substrate and a flow path forming member, the liquid discharge head substrate having a base, a pressure generation portion provided at a front surface of the base to generate pressure for discharging a liquid, and a supply port for supplying the liquid to the pressure generation portion, and the flow path forming member forming a flow path for feeding the liquid supplied from the supply port to the pressure generation portion. The method includes removing a sacrificial layer by etching the base from a back surface of the base, in a state in which an end covering portion of a cover layer for covering the sacrificial layer is covered with the resin layer. The method suppresses formation of a crack in the end covering portion that covers the end portion of the sacrificial layer.

Method for manufacturing liquid discharge head, liquid discharge head, and method for manufacturing liquid discharge head substrate

A liquid discharge head includes a recording element substrate having first to fourth discharge port groups, each of which includes a plurality of discharge ports for discharging liquid, first flow path connecting a first liquid tank to the first discharge port group, a second flow path connecting a second liquid tank to the second discharge port group, and a third flow path connecting a third liquid tank to the third discharge port group and the fourth discharge port group, wherein a flow resistance in the first flow path is smaller than a flow resistance in the second flow path and larger than a flow resistance in the third flow path, and wherein a ratio of the flow resistance in the second flow path to the flow resistance in the third flow path is 4 or less.

Liquid discharge head, liquid discharge apparatus, and manufacturing method

A liquid ejection head includes a substrate in which at least four inlets to which a liquid is supplied are arranged, and an ejection port forming member provided with an ejection port from which the liquid supplied to the inlets is ejected and provided in the substrate. The inlets are each formed along a first direction and are arranged in a second direction which crosses the first direction. A plurality of inter-inlet areas sandwiched between the inlets adjacent to each other has at least two types of areas different in distance between the inlets adjacent to each other, and, among the inter-inlet areas, an area positioned on each of both ends of the substrate is different from an area in which the distance between the inlets is the shortest.

Liquid ejection head and liquid ejection apparatus

A liquid discharge head includes a recording element substrate including energy generating elements configured to generate energy for discharging liquid and a driving circuit configured to drive the energy generating elements, and a wiring unit including a plurality of connection terminals for connection with the main body side and electrically connected to the recording element substrate. In the wiring unit, wiring lines are respectively connected to the plurality of connection terminals, and a functional element configured to regulate an applied voltage to a predetermined voltage or less is provided between at least one signal wiring line connected to the driving circuit and used to transmit a signal for driving the energy generating element among the wiring lines and the wiring line having a relatively larger electric capacitance than that of the signal wiring line.

Liquid discharge head

In a liquid discharge head, a third discharge port array group Cwhich discharges a liquid of cyan, a second discharge port array group Mwhich discharges a liquid of magenta, a fourth discharge port array group G which discharges a liquid of gray, a first discharge port array group Y which discharges a liquid of yellow, a second discharge port array group Mwhich discharges a liquid of magenta, a third discharge port array group Cwhich discharges a liquid of cyan are arranged in this order, in a direction. Each of discharge port arrays of the fourth discharge port array group G is formed of a plurality of discharge ports having a diameter smaller than that of a plurality of discharge ports which constitute first discharge port arrays of the second and third discharge port array groups C, C, Mand M

A liquid discharge head includes a recording element substrate for discharging a liquid and a housing with the recording element substrate attached thereto. A plurality of holes having openings on a back side of an attachment surface of the housing to be attached to the carriage, are juxtaposed in a direction intersecting with a vertical direction in a state where the liquid discharge head is attached to the carriage. Two positioning bosses, on the attachment surface, are formed above two holes at both end sides of a plurality of the juxtaposed holes or above portions on an inner side than the two holes, and configured to contact the carriage to determine a position of the liquid discharge head on the carriage.

A liquid discharging head includes a recording element substrate configured to discharge a liquid; an electric wiring substrate that is provided with a lead terminal that is connected to the recording element substrate; and a supporting member to which the electric wiring substrate is bonded. The electric wiring substrate is bonded to the supporting member with two or more types of adhesives including at least a first adhesive and a second adhesive whose volume resistivity is higher than that of the first adhesive, a bond strength of the first adhesive is higher than a bond strength of the second adhesive, and, at the supporting member, the second adhesive is applied such that the second adhesive is provided closer to the lead terminal than the first adhesive.

Liquid discharging head and method for producing the same

A liquid ejection head includes a liquid ejection section including an element substrate having ejection ports for ejecting liquid and an electrical wiring substrate connected to a contact of the liquid ejection apparatus to transmit signals to the element substrate, a liquid tank loading section including a containing space for containing a liquid tank storing liquid to be supplied to the element substrate and a lock member having an engaging part for engaging with a holding part of the liquid tank and a fixation means for rigidly securing the liquid election section and the liquid tank loading section in position.

Liquid ejection cartridge and liquid ejection apparatus

A liquid ejection head includes a recording element substrate that ejects liquid, and an element-substrate support member to which the recording element substrate is bonded with an adhesive. A groove to be filled with the adhesive is provided in a bonding region of the element-substrate support member, at which the element-substrate support member and the recording element substrate are bonded together, along a part or an entirety of the outer circumference of the recording element substrate.

Liquid ejection head and method of manufacturing the same

A liquid ejection cartridge having a liquid ejection section for ejecting liquid includes an electrical contact section to be electrically connected to a terminal section of an apparatus main body, the electrical contact section being formed by a plurality of printed substrates arranged on a same surface.

A liquid ejection head includes an ejection section for ejecting liquid; an electrical wiring substrate having terminals to be electrically connected to the respective electrical contacts of a liquid ejection apparatus; a first loading section to be loaded with a first liquid storing container; and a second loading section to be loaded with a second liquid storing container having a width greater than that of the first liquid storing container. The wall of the liquid ejection head is provided with a rib extending in the height direction on the surface opposite to the surface mounted by the electrical wiring substrate; and the second loading section and the rib are arranged at respective positions where the second loading section and the rib overlap with each other as viewed in the direction of loading the second liquid storing container in the second loading section.

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Tokyo, Japan

Sayaka Seki