Canon Kabushiki Kaisha

Shingo Okushima

Seiichiro Karita

Takatsuna Aoki

Noriyasu Nagai

Kazuhiro Yamada

Yumi Komamiya

Shuzo Iwanaga

Yoshiyuki Nakagawa

Akira Yamamoto

Seiji Suzuki

Junichi Seki

Eisuke Nishitani

Akio Saito

Satoshi Kimura

Nobuhito Suehira

Atsunori Terasaki

Satoshi Oikawa

Hideki Ina

Yoichi Takada

Ryo Kasai

Takaya Sato

Zentaro Tamenaga

Toru Nakakubo

Mitsutoshi Noguchi

Toru Ohnishi

Ryosuke Hirokawa

Kengo Umeda

Takuto Moriguchi

Takuya Iwano

Koichi Ishida

Kazuyuki Kasumi

Naozumi Nabeshima

Takatsugu Moriya

Yasuhiko Osaki

Ryota Kashu

Motoki Okinaka

Masataka Sakurai

Hiromasa Amma

Mikio Sanada

Eigo Kawakami

Shintaro Kasai

Masashi Hayashi

Akiko Saito

Tomohiro Sato

Tatsuya Yamada

Takuro Yamazaki

Tamaki Sato

Takeshi Murase

Haruhito Ono

Akiko Hammura

Ryosuke Araki

Takayuki Okamoto

Tatsurou Mori

Naoto Sasagawa

Masao Furukawa

Tetsushi Ishikawa

Yoshihiro Hamada

Manabu Otsuka

Yasuaki Tominaga

Shin-ichi Hakamada

Nao Nakatsuji

Yuki Sawai

Ran Kudo

Tomoki Tsuji

Hirotomo Taniguchi

Takuya Hane

Asuka Horie

Koji Tachibana

Shin-Ichi Hakamada

To improve the structural reliability of a liquid ejection head, the liquid ejection head includes a first substrate having ejection ports, liquid chambers, and energy generation elements, and a second substrate joined to a second surface of the first substrate situated opposite to its first surface. The first substrate includes projecting areas projecting from end portions of the second substrate in a planar direction perpendicular to a first-axis direction (z-axis direction). Terminals to be electrically connected to the energy generation elements are provided at the second surfaces of the projecting areas. A support member is joined to the first surface of the first substrate, has an opening at a position opposed to where the ejection ports are formed, and is fixed to the frame.

Liquid ejection head and liquid ejection apparatus

A liquid ejection head includes an ejection opening; a passage in which an energy generation element is disposed; an ejection opening portion that allows communication between the ejection opening and the passage; a supply passage for allowing the liquid to flow into the passage; and an outflow passage for allowing the liquid to flow out to the outside. An expression of H×P×W>1.7 is satisfied when a height of the passage is set to H [μm], a length of the ejection opening portion is set to P [μm], and a length of the ejection opening portion is set to W [μm].

Liquid ejection head, liquid ejection apparatus, and method of supplying liquid

A liquid ejection head and a liquid ejection apparatus are designed to suppress separation of ejection modules from a support member. To this end, a liquid supply unit is aligned with respect to the support member to which the ejection modules are bonded. Moreover, in a connection unit of an ejection unit and the liquid supply unit, liquid connection units of the ejection unit are connected to be movable relative to the liquid supply unit.

A liquid ejection head includes a liquid ejection part configured to eject a liquid; and a guide part provided upstream of the liquid ejection part with respect to a conveying direction of a recording medium and configured to guide the front end of the recording medium conveyed to the liquid ejection part. The guide part has an inclined surface inclined so as to be more spaced apart from a conveyance path for the recording medium as the inclined surface is more distant from the liquid ejection part.

A liquid ejecting head has a laminated flow path member on which a supply flow path for individually supplying a plurality of liquids to an element substrate and a collection flow path for individually collecting the liquids are formed. The supply flow path includes first and second common supply flow paths for horizontally leading first and second liquids to positions corresponding to a plurality of element substrates. The first and second common supply flow paths are formed in the same layer of the laminated flow path member. The collection flow path includes a first common collection flow path for horizontally collecting the first liquid and a second common collection flow path for horizontally collecting the second liquid from positions corresponding to the plurality of element substrates. The first and second common collection flow paths are formed in the same layer of the laminated flow path member.

Liquid ejecting head and liquid ejecting apparatus

A liquid discharge head includes a liquid discharge substrate that has a discharge-orifice row, pressure generating elements, and pressure chambers. The liquid discharge head discharges a liquid in a block-by-block manner using sequential driving. The discharge-orifice row is disposed so as to incline at an angle θ=Arctan (d1/d2) relative to a direction extending orthogonal to the conveyance direction of the medium, in which d1 (μm) is a disposition spacing of the discharge orifices in the discharge-orifice row in the conveyance direction and d2 (μm) is a disposition spacing of the discharge orifices in the discharge-orifice row in the direction orthogonal to the conveyance direction. A partition wall is formed between adjacent pressure chambers so as to separate the adjacent pressure chambers from each other. The partition wall has a communicating portion that communicates the adjacent pressure chambers with each other.

Liquid discharge head

A liquid ejection head including a recording element substrate for ejecting liquid supported by a support member with an adhesive layer provided between the recording element substrate and the support member. A terminal is provided at an end portion of the recording element substrate with a sealing member covering the end portion of the recording element substrate including the terminal. The sealing member is in contact with a side surface of the end portion and an end surface of the adhesive layer. The adhesive layer comprises includes a first adhesive portion and a second adhesive portion positioned between the first adhesive portion and the sealing member. Rigidity of the second adhesive portion is less than the rigidity of the sealing member and less than the rigidity of the first adhesive portion.

Liquid ejection head

A liquid discharge head includes a recording element substrate including a discharge port. A channel member is configured to supply the recording element substrate with a liquid. An electric wiring board is configured to supply the recording element substrate with power. A plate-like protective member is directly or indirectly fixed to the channel member. In a case where a direction in which the recording element substrate is viewed from the channel member is defined as downward, the protective member includes a first bent portion configured to be bent in a transverse direction of the liquid discharge head. The first bent portion is located at a position that is above an upper end of the channel member and below a midpoint of a line segment connecting the upper end of the channel member and an upper end of the protective member.

Liquid discharge head and recording apparatus

Misalignment of printing positions is reduced in a print head that circulates an ink between a printing apparatus and the print head in a case where the misalignment is apt to change dynamically along with heat deformation. To this end, printing element substrates in the print head are adjusted to a target temperature and then a liquid is circulated through the print element substrates. After thermal expansion of the print head reaches a steady state, an amount of misalignment of printing positions in a direction of conveyance of the print head is obtained by using a test pattern printed by using printing elements. Further, a correction value for correcting the misalignment of the printing positions is set based on the obtained amount of misalignment of the printing positions.

Printing position correction method, printing apparatus, and storage medium

Misalignment of printing positions between print heads associated with thermal expansion is reduced without increasing a data processing load. To this end, printing element substrates in a reference head and an adjustment target head are adjusted to a target temperature, and a liquid is circulated through the print element substrates. After thermal expansion of the reference head and the adjustment target head reaches a steady state, a first printing region being a printing region of the reference head and a second printing region being a printing region of the adjustment target head in a longitudinal direction are obtained from an image printed by using all printing elements. Then, used regions to be used for actual printing are set among the printing elements arranged on the reference head and the adjustment target head based on the first printing region and the second printing region.

Printing position adjustment method and storage medium

A liquid ejection head includes an ejection opening; a passage in which an energy generation element is disposed; an ejection opening portion that allows communication between the ejection opening and the passage; a supply passage for allowing the liquid to flow into the passage; and an outflow passage for allowing the liquid to flow out to the outside. An expression of H&#xd7;P&#xd7;W&#x3e;is satisfied when a height of the passage is set to H [&#x3bc;m], a length of the ejection opening portion is set to P [&#x3bc;m], and a length of the ejection opening portion is set to W [&#x3bc;m].

An element substrate of a liquid ejection head includes an ejection opening array in which multiple ejection openings are arranged along a predetermined direction, pressure chambers communicating with the ejection openings, and heat generating elements for ejecting liquid, supplied to the pressure chambers, through the ejection openings. The element substrate also includes a predetermined supply path extending in the predetermined direction and communicating with the pressure chambers, a predetermined collection path communicating with the pressure chambers, multiple liquid supply ports communicating with the supply path at different positions in the predetermined direction, and a liquid collection port communicating with the collection path. Among the multiple liquid supply ports, at least a liquid supply port located at an end portion in the predetermined direction has an opening area larger than the opening area of the liquid collection port.

Liquid ejection head, liquid ejection apparatus, and printing apparatus

Provided is a liquid ejection head comprising: an ejection opening row along a first direction; a pressure chamber with print-element; a passage communicating with the pressure chamber; a supply opening row along the first direction with supply openings extending in a second direction to supply liquid to the passage; a collection opening row along the first direction with collection openings extending in the second direction to collect a liquid from the passage; a first common supply passage along the first direction to supply a liquid to the supply opening row; a first common collection passage along the first direction to collect a liquid from the collection opening row; a first supply side communication opening extending in the second direction to supply a liquid to the first common supply passage; and a first collection side communication opening extending in the second direction to collect a liquid from the first common collection passage, wherein at least one of the first supply side communication opening and the first collection side communication opening is provided at a plurality of positions.

A liquid ejection head includes an ejection orifice for ejecting a liquid; a flow path in which an energy generating element is disposed, generates an energy to be used for ejecting the liquid; a liquid inside the flow path; an ejection orifice part that allows the ejection orifice and the flow path to communicate with each other; a supply flow path for supplying the liquid from the outside; and a recovery flow path for recovering the liquid to the outside. The moisture content of the liquid is 65 wt % or less. The liquid inside the flow path is circulated between the inside and the outside of the flow path.

Growing community of inventors

Kawasaki, Japan

Shingo Okushima