公开(公告)号：US10471711B2

公开(公告)日：2019-11-12

申请号：US15965682

申请日：2018-04-27

Applicant: CANON KABUSHIKI KAISHA

Inventor： Seiichiro Karita ,  Shuzo Iwanaga ,  Kazuhiro Yamada ,  Takatsuna Aoki ,  Shingo Okushima ,  Zentaro Tamenaga ,  Yumi Komamiya ,  Noriyasu Nagai ,  Tatsurou Mori ,  Yoshiyuki Nakagawa ,  Akira Yamamoto

IPC: B41J2/175 ,  B41J2/18 ,  B41J2/045 ,  B41J2/195 ,  B41J2/14 ,  B41J2/155 ,  B41J2/165

Abstract: In a printing apparatus including a circulation system circulating a liquid, a volatile component included in the liquid evaporates from an ejection opening and thus characteristics of the liquid involving with concentration or viscosity change. The invention provides a printing apparatus that uses a liquid ejection head including an ejection opening ejecting a liquid, a print element generating energy for ejecting a liquid, and a pressure chamber having the print element provided therein, the printing apparatus including: a circulator configured to circulate the liquid so that the liquid passes through the pressure chamber; and a concentration adjustment unit configured to adjust a concentration of a liquid inside a liquid circulation system by discharging the liquid from the inside of the liquid circulation system and replenishing the liquid into the liquid circulation system from the outside of the liquid circulation system in response to the amount of the discharged liquid.

公开(公告)号：US10350885B2

公开(公告)日：2019-07-16

申请号：US15597682

申请日：2017-05-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takatsuna Aoki ,  Shuzo Iwanaga ,  Seiichiro Karita ,  Kazuhiro Yamada ,  Shingo Okushima ,  Zentaro Tamenaga ,  Akira Yamamoto ,  Tatsurou Mori ,  Noriyasu Nagai ,  Akio Saito ,  Ryo Kasai

IPC: B41J29/38 ,  B41J2/045 ,  B41J2/14 ,  B41J2/155

Abstract: A liquid discharge device performs recording by use of a liquid discharge head including discharge ports to discharge a liquid, pressure generation elements to generate energy to be used to discharge the liquid, and pressure chambers communicating with the discharge ports. The liquid discharge device includes a control unit to control a temperature of the liquid discharge head by applying heat with heating elements arranged in divided areas of a region of the liquid discharge head where the discharge ports are arranged. When there is recording data for the discharge port in a certain one of the divided areas, the control unit causes the heating element in the divided area to generate heat, and when there is no recording data for the discharge port in the certain divided area, the control unit keeps the heating element in the certain divided area from generating heat.

公开(公告)号：US10293604B2

公开(公告)日：2019-05-21

申请号：US15459408

申请日：2017-03-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takatsuna Aoki ,  Shuzo Iwanaga ,  Seiichiro Karita ,  Kazuhiro Yamada ,  Shingo Okushima ,  Zentaro Tamenaga ,  Akira Yamamoto ,  Tatsurou Mori ,  Noriyasu Nagai ,  Akio Saito ,  Masashi Hayashi ,  Takeshi Murase ,  Yuki Sawai

IPC: B41J2/045 ,  B41J2/14

Abstract: In order to keep possible local temperature differences in a liquid ejection head small to allow stable liquid ejection performance to be achieved, temperatures in a plurality of heating areas in a liquid ejection head are discretely controlled using heating elements and temperature detection elements.

公开(公告)号：US10201980B2

公开(公告)日：2019-02-12

申请号：US15888974

申请日：2018-02-05

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takatsuna Aoki ,  Seiichiro Karita ,  Shingo Okushima ,  Eisuke Nishitani ,  Yumi Komamiya ,  Kazuhiro Yamada ,  Zentaro Tamenaga ,  Noriyasu Nagai ,  Tatsurou Mori ,  Shuzo Iwanaga ,  Akio Saito ,  Akira Yamamoto

IPC: B41J2/18 ,  B41J2/14 ,  B41J2/175 ,  B41J2/01

Abstract: A liquid discharge head includes discharge orifices, recording elements that generate energy, supply channels that supply liquid to the recording elements, a common supply channel communicating with the supply channels, recovery channels that recover liquid supplied to the recording elements, a common recovery channel that recovers liquid from the recovery channels, a first inlet port that supplies liquid to the common supply channel, a first recovery port that recovers liquid from the first common supply channel, a second inlet port that supplies liquid to the common recovery channel, and a second recovery port that recovers liquid from the second common recovery channel. The first inlet port and the first recovery port communicate without going through channel portions where recording elements are disposed, and the second inlet port and the second recovery port communicate without going through channel portions where recording elements are disposed.

公开(公告)号：US20190023018A1

公开(公告)日：2019-01-24

申请号：US16140896

申请日：2018-09-25

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yoshiyuki Nakagawa ,  Kazuhiro Yamada ,  Noriyasu Nagai ,  Takuro Yamazaki ,  Toru Nakakubo ,  Akira Yamamoto ,  Masafumi Morisue ,  Ryo Kasai

IPC: B41J2/175 ,  B41J2/18

CPC classification number: B41J2/175 ,  B41J2/1404 ,  B41J2/18 ,  B41J2202/12

Abstract: The liquid ejection head 1 is provided with: an ejection orifice array 19 arraying multiple ejection orifices 12 in order to eject a liquid; multiple energy-generating elements 11 for generating energy in order to eject the liquid; a substrate 10 provided with the multiple energy-generating elements 11; a through port array 25 arraying multiple through ports 16 penetrating the substrate 10; multiple linear liquid flow paths 13 positioned between the through port array 25 and the ejection orifice array 19, and connected to respective ejection orifices 12 of the ejection orifice array 19 and respective through ports 16 of the through port array 25; and first and second electrode 21 and 22 arranged in each of the multiple liquid flow paths 13, and for generating an electroosmotic flow in the liquid.

公开(公告)号：US20190023016A1

公开(公告)日：2019-01-24

申请号：US16141055

申请日：2018-09-25

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yoshiyuki Nakagawa ,  Kazuhiro Yamada ,  Noriyasu Nagai ,  Takuro Yamazaki ,  Toru Nakakubo ,  Akira Yamamoto ,  Masafumi Morisue ,  Ryo Kasai

IPC: B41J2/14

Abstract: A liquid ejection head 1 includes an ejection orifice 12 through which a liquid is ejected, a first liquid flow path 13 which is in communication with the ejection orifice 12 and through which the liquid flows, a second liquid flow path 14 which is in communication with the ejection orifice 12 on the opposite side of the first liquid flow 13 with respect to the ejection orifice 12 and through which the liquid flows, a first electrode 21 positioned in the first liquid flow path 13, and a second electrode 22 which is positioned in the second liquid flow path 14 and generates an electro-osmotic flow in the liquid together with the first electrode 21.

公开(公告)号：US20190001699A1

公开(公告)日：2019-01-03

申请号：US15995493

申请日：2018-06-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Toru Nakakubo ,  Takuro Yamazaki ,  Kazuhiro Yamada ,  Yoshiyuki Nakagawa

IPC: B41J2/18 ,  B41J2/175 ,  B41J2/14 ,  B41J2/21

Abstract: 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 includes an element arranged face in which a plurality of ejecting elements are arranged, a circulation flow path including a supply flow path which supplies liquid to a pressure chamber and a collection flow path which collects liquid from the pressure chamber, and a liquid delivery mechanism provided in the circulation flow path for circulating liquid in the pressure chamber. The liquid delivery mechanism is located lower than the element arranged face.

公开(公告)号：US20190001698A1

公开(公告)日：2019-01-03

申请号：US15992667

申请日：2018-05-30

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takuro Yamazaki ,  Toru Nakakubo ,  Kazuhiro Yamada ,  Yoshiyuki Nakagawa ,  Yoshihiro Hamada ,  Koichi Ishida ,  Shingo Okushima

IPC: B41J2/18

CPC classification number: B41J2/18 ,  B41J2/1404 ,  B41J2/14145 ,  B41J2002/14459 ,  B41J2202/12 ,  B41J2202/21

Abstract: A plurality of pressure chambers are formed in a circulation channel for liquid in order to array ejection ports in a high density in association with the circulation channel. The circulation channel is connected to a penetration supply path and a penetration recovery path that penetrate a substrate.

公开(公告)号：US09744760B2

公开(公告)日：2017-08-29

申请号：US14615960

申请日：2015-02-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazuhiro Yamada ,  Takuto Moriguchi ,  Zentaro Tamenaga ,  Shuzo Iwanaga ,  Takatsugu Moriya

IPC: B41J29/377 ,  B41J2/045 ,  B41J2/14 ,  B41J2/155

CPC classification number: B41J2/04528 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/1408 ,  B41J2/155 ,  B41J2202/12 ,  B41J2202/20

Abstract: Provided is a liquid ejection head including: a plurality of recording element substrates including energy generating elements that generate ejection energy for ejecting liquid from ejection orifices; a first support member that supports the plurality of recording element substrates such that the recording element substrates are arranged in one or more lines on a main surface of the first support member; and a second support member that supports the first support member on a surface opposite to the main surface. A first thermal resistance concerning an in-plane direction parallel to the main surface, of a region between the recording element substrates in the first support member is higher than a second thermal resistance concerning a thickness direction of the second support member, of a projection region that overlaps with each recording element substrate in the second support member.

公开(公告)号：US20170197435A1

公开(公告)日：2017-07-13

申请号：US15389323

申请日：2016-12-22

Applicant: CANON KABUSHIKI KAISHA

Inventor： Akira Yamamoto ,  Shuzo Iwanaga ,  Seiichiro Karita ,  Kazuhiro Yamada ,  Takatsuna Aoki ,  Shingo Okushima ,  Akio Saito ,  Zentaro Tamenaga ,  Noriyasu Nagai ,  Tatsurou Mori

IPC: B41J2/18 ,  B41J2/14

CPC classification number: B41J2/18 ,  B41J2/14024 ,  B41J2/1404 ,  B41J2/14072 ,  B41J2/1433 ,  B41J2/175 ,  B41J2/17563 ,  B41J2002/012 ,  B41J2202/12 ,  B41J2202/20 ,  B41J2202/21

Abstract: A liquid discharge head includes: a plurality of recording element boards each having a plurality each of discharge orifices configured to discharge liquid, liquid supply channels configured to supply liquid to the discharge orifices, and liquid recovery channels configured to recover liquid supplied from the liquid supply channels; a common supply channel communicating with at least one liquid supply channel of the recording element boards and configured to supply liquid to the plurality of recording element boards; and a common recovery channel communicating with at least one liquid recovery channel of the recording element boards and configured to recover liquid from the plurality of recording element boards.