Patents by Inventor Tatsuo Nanjo
Tatsuo Nanjo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11975543Abstract: A liquid replenishing system includes a liquid tank and a liquid storage bottle for storing liquid to be replenished to the liquid tank. The liquid tank includes a tank body, a cylindrical adapter, and a needle penetrating into the tank body inside the cylindrical adapter. One end of the needle is located outside the tank body and another end of the needle is located inside the tank body. The liquid storage bottle includes a bottle body, a nozzle having an ejection port for ejecting a liquid stored in the bottle body, and includes a slit valve provided at the ejection port. In a case where the nozzle of the liquid storage bottle and the cylindrical adapter of the liquid tank are fitted to each other, one end of the needle is inserted into the slit valve so that the liquid storage bottle is secured to the liquid tank.Type: GrantFiled: March 8, 2022Date of Patent: May 7, 2024Assignee: Canon Kabushiki KaishaInventors: Takanori Yashiro, Chiaki Muraoka, Tatsuo Nanjo, Hirofumi Okuhara, Kazumasa Matsushita, Yuji Tamaru
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Patent number: 11794481Abstract: An inkjet printer includes an inkjet head configured to discharge ink and an ink tank including a plurality of ink storage portions in which the ink is stored to supply the ink to the inkjet head via a connected tube, and replenishing ports via which the plurality of ink storage portions is replenished with ink, wherein the ink tank has an outer wall facing an outer side of the ink tank and having a thickness greater than a thickness of a partition wall arranged between the plurality of ink storage portions.Type: GrantFiled: August 18, 2022Date of Patent: October 24, 2023Assignee: Canon Kabushiki KaishaInventors: Masatomo Ojima, Hirofumi Okuhara, Tatsuo Nanjo, Chiaki Muraoka
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Publication number: 20230256744Abstract: An inkjet printer includes an inkjet head configured to discharge ink and an ink tank including a plurality of ink storage portions in which the ink is stored to supply the ink to the inkjet head via a connected tube, and replenishing ports via which the plurality of ink storage portions is replenished with ink, wherein the ink tank has an outer wall facing an outer side of the ink tank and having a thickness greater than a thickness of a partition wall arranged between the plurality of ink storage portions.Type: ApplicationFiled: April 24, 2023Publication date: August 17, 2023Inventors: Masatomo Ojima, Hirofumi Okuhara, Tatsuo Nanjo, Chiaki Muraoka
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Publication number: 20230173817Abstract: A liquid cartridge includes: a valve unit configured to be movable to a position to close the atmosphere communication hole and a position to open the atmosphere communication hole; and a lever configured to fix the valve unit to the position to close the atmosphere communication hole by pressing the valve unit and configured to be capable of moving the valve unit to the position to open the atmosphere communication hole by removing the pressing against the valve unit, wherein the lever is configured to remove the pressing against the valve unit by moving in a direction intersecting a direction in which the valve unit moves.Type: ApplicationFiled: January 31, 2023Publication date: June 8, 2023Inventors: Shinji KISHIKAWA, Keisuke KOUNO, Hiroki HAYASHI, Tatsuo NANJO
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Patent number: 11597210Abstract: A liquid cartridge includes: a valve unit configured to be movable to a position to close the atmosphere communication hole and a position to open the atmosphere communication hole; and a lever configured to fix the valve unit to the position to close the atmosphere communication hole by pressing the valve unit and configured to be capable of moving the valve unit to the position to open the atmosphere communication hole by removing the pressing against the valve unit, wherein the lever is configured to remove the pressing against the valve unit by moving in a direction intersecting a direction in which the valve unit moves.Type: GrantFiled: April 28, 2021Date of Patent: March 7, 2023Assignee: Canon Kabushiki KaishaInventors: Shinji Kishikawa, Keisuke Kouno, Hiroki Hayashi, Tatsuo Nanjo
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Patent number: 11590759Abstract: A liquid container is removably mountable into the apparatus body of a liquid ejection apparatus. The liquid container comprises a liquid storage chamber equipped with an air intake hole and a liquid supply port, for storing liquid and a valve unit having a sealing member and an urging member. The urging member is arranged so as to be at least partly rotationally movable and the urging member has urging force for urging the sealing member in the direction of making the sealing member abut the air intake hole. The sealing member is rotationally movable between a position of abutting and closing the air intake hole and a position separated from the air intake hole so as to open the air intake hole in response to a rotary motion of the urging member.Type: GrantFiled: September 23, 2021Date of Patent: February 28, 2023Assignee: Canon Kabushiki KaishaInventors: Tatsuo Nanjo, Hiroki Hayashi, Keisuke Kouno
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Publication number: 20220410577Abstract: An inkjet printer includes an inkjet head configured to discharge ink and an ink tank including a plurality of ink storage portions in which the ink is stored to supply the ink to the inkjet head via a connected tube, and replenishing ports via which the plurality of ink storage portions is replenished with ink, wherein the ink tank has an outer wall facing an outer side of the ink tank and having a thickness greater than a thickness of a partition wall arranged between the plurality of ink storage portions.Type: ApplicationFiled: August 18, 2022Publication date: December 29, 2022Inventors: Masatomo Ojima, Hirofumi Okuhara, Tatsuo Nanjo, Chiaki Muraoka
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Patent number: 11458734Abstract: An inkjet printer includes an inkjet head configured to discharge ink and an ink tank including a plurality of ink storage portions in which the ink is stored to supply the ink to the inkjet head via a connected tube, and replenishing ports via which the plurality of ink storage portions is replenished with ink, wherein the ink tank has an outer wall facing an outer side of the ink tank and having a thickness greater than a thickness of a partition wall arranged between the plurality of ink storage portions.Type: GrantFiled: January 24, 2020Date of Patent: October 4, 2022Assignee: Canon Kabushiki KaishaInventors: Masatomo Ojima, Hirofumi Okuhara, Tatsuo Nanjo, Chiaki Muraoka
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Publication number: 20220184961Abstract: A liquid replenishing system includes a liquid tank and a liquid storage bottle for storing liquid to be replenished to the liquid tank. The liquid tank includes a tank body, a cylindrical adapter, and a needle penetrating into the tank body inside the cylindrical adapter. One end of the needle is located outside the tank body and another end of the needle is located inside the tank body. The liquid storage bottle includes a bottle body, a nozzle having an ejection port for ejecting a liquid stored in the bottle body, and includes a slit valve provided at the ejection port. In a case where the nozzle of the liquid storage bottle and the cylindrical adapter of the liquid tank are fitted to each other, one end of the needle is inserted into the slit valve so that the liquid storage bottle is secured to the liquid tank.Type: ApplicationFiled: March 8, 2022Publication date: June 16, 2022Inventors: Takanori Yashiro, Chiaki Muraoka, Tatsuo Nanjo, Hirofumi Okuhara, Kazumasa Matsushita, Yuji Tamaru
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Patent number: 11298945Abstract: A liquid replenishing system includes a liquid tank and a liquid storage bottle for storing liquid to be replenished to the liquid tank. The liquid tank includes a tank body, a cylindrical adapter, and a needle penetrating into the tank body inside the cylindrical adapter. One end of the needle is located outside the tank body and another end of the needle is located inside the tank body. The liquid storage bottle includes a bottle body, a nozzle having an ejection port for ejecting a liquid stored in the bottle body, and includes a slit valve provided at the ejection port. In a case where the nozzle of the liquid storage bottle and the cylindrical adapter of the liquid tank are fitted to each other, one end of the needle is inserted into the slit valve so that the liquid storage bottle is secured to the liquid tank.Type: GrantFiled: August 4, 2020Date of Patent: April 12, 2022Assignee: Canon Kabushiki KaishaInventors: Takanori Yashiro, Chiaki Muraoka, Tatsuo Nanjo, Hirofumi Okuhara, Kazumasa Matsushita, Yuji Tamaru
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Publication number: 20220097388Abstract: A liquid container is removably mountable into the apparatus body of a liquid ejection apparatus. The liquid container comprises a liquid storage chamber equipped with an air intake hole and a liquid supply port, for storing liquid and a valve unit having a sealing member and an urging member. The urging member is arranged so as to be at least partly rotationally movable and the urging member has urging force for urging the sealing member in the direction of making the sealing member abut the air intake hole. The sealing member is rotationally movable between a position of abutting and closing the air intake hole and a position separated from the air intake hole so as to open the air intake hole in response to a rotary motion of the urging member.Type: ApplicationFiled: September 23, 2021Publication date: March 31, 2022Inventors: Tatsuo Nanjo, Hiroki Hayashi, Keisuke Kouno
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Patent number: 11254135Abstract: A sealing member is applied to the surface of a liquid storage container having a liquid supply port provided so as to be open to a concave space formed on the surface with a gap between the applied sealing member and the liquid supply ports so as to seal the concave space. The liquid supply port has a profile adapted to be inserted into and connected to a connecting portion for supplying liquid to the liquid supply port. A cut score section is formed on the sealing member as including a center point located at the position on the extension from the front end of the liquid supply port in the direction of connecting the liquid supply port to the connecting portion and the cut score section is torn as it is pressed by the connecting portion moving toward the liquid supply port.Type: GrantFiled: March 11, 2020Date of Patent: February 22, 2022Assignee: Canon Kabushiki KaishaInventors: Keisuke Iinuma, Tatsuo Nanjo, Wataru Takahashi, Kenta Udagawa
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Patent number: 11247475Abstract: A liquid collecting device to collect liquid stored in a storage portion of a liquid container includes a bottle main body, a collecting joint portion, and a first valve element. A flow passage member of the liquid container ports the liquid to the storage portion. The bottle main body has first and second openings in communication with outside the liquid collecting device. The collecting joint portion connects to the bottle main body through the first opening and includes a first coupling portion coupled to the flow passage member, and an internal flow passage extending between the first opening and the first coupling portion. The internal flow passage includes a throttle portion and a space. The first valve element is moveably provided in the space and the first valve element has an area larger than an opening area of the first opening and an opening area of the throttle portion.Type: GrantFiled: July 23, 2020Date of Patent: February 15, 2022Assignee: Canon Kabushiki KaishaInventors: Tatsuo Nanjo, Yuji Tamaru
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Publication number: 20210362506Abstract: A liquid cartridge includes: a valve unit configured to be movable to a position to close the atmosphere communication hole and a position to open the atmosphere communication hole; and a lever configured to fix the valve unit to the position to close the atmosphere communication hole by pressing the valve unit and configured to be capable of moving the valve unit to the position to open the atmosphere communication hole by removing the pressing against the valve unit, wherein the lever is configured to remove the pressing against the valve unit by moving in a direction intersecting a direction in which the valve unit moves.Type: ApplicationFiled: April 28, 2021Publication date: November 25, 2021Inventors: Shinji KISHIKAWA, Keisuke KOUNO, Hiroki HAYASHI, Tatsuo NANJO
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Patent number: 10994548Abstract: Provided is a technique that enables openings for injecting liquid to be sealed with a simple and low-cost configuration. A liquid reservoir container includes: a reservoir portion configured to contain liquid in an inside of the reservoir portion and having multiple openings communicating with the inside; a supply portion connected to at least one of the openings and configured to supply liquid to the reservoir portion from a tank reserving the liquid via a flow path; and a sheet member. The liquid reservoir container supplies liquid reserved in the reservoir portion to an ejecting portion configured to eject liquid, and the sheet member is attached to the reservoir portion so as to seal an opening to which the supply portion is not connected of the multiple openings.Type: GrantFiled: August 9, 2019Date of Patent: May 4, 2021Assignee: Canon Kabushiki KaishaInventors: Keisuke Iinuma, Kenta Udagawa, Tatsuo Nanjo, Hiroshi Koshikawa
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Patent number: 10967643Abstract: Provided is a liquid ejecting apparatus comprising: a cartridge capable of ejecting a liquid stored therein; a flow channel through which the cartridge and a liquid tank capable of supplying the liquid to the cartridge are in fluid communication with each other; a closing unit capable of closing the flow channel; and a movable member configured to be operated before the cartridge and the flow channel are uncoupled. The closing unit comprises a closing member, and closes the flow channel with the closing member moved with movement of the movable member. The liquid ejecting apparatus further comprises a carriage capable of carrying the cartridge and moving during liquid ejection of the cartridge. The movable member is a covering member provided to the carriage and configured to cover the cartridge, and in replacement of the cartridge, the movable member is removed from covering the cartridge to allow access to the cartridge.Type: GrantFiled: September 4, 2019Date of Patent: April 6, 2021Assignee: Canon Kabushiki KaishaInventors: Tatsuo Nanjo, Kenta Udagawa, Hiroshi Koshikawa, Keisuke Iinuma
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Publication number: 20210060958Abstract: A liquid replenishing system includes a liquid tank and a liquid storage bottle for storing liquid to be replenished to the liquid tank. The liquid tank includes a tank body, a cylindrical adapter, and a needle penetrating into the tank body inside the cylindrical adapter. One end of the needle is located outside the tank body and another end of the needle is located inside the tank body. The liquid storage bottle includes a bottle body, a nozzle having an ejection port for ejecting a liquid stored in the bottle body, and includes a slit valve provided at the ejection port. In a case where the nozzle of the liquid storage bottle and the cylindrical adapter of the liquid tank are fitted to each other, one end of the needle is inserted into the slit valve so that the liquid storage bottle is secured to the liquid tank.Type: ApplicationFiled: August 4, 2020Publication date: March 4, 2021Inventors: Takanori Yashiro, Chiaki Muraoka, Tatsuo Nanjo, Hirofumi Okuhara, Kazumasa Matsushita, Yuji Tamaru
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Publication number: 20210031531Abstract: A liquid collecting device to collect liquid stored in a storage portion of a liquid container includes a bottle main body, a collecting joint portion, and a first valve element. A flow passage member of the liquid container ports the liquid to the storage portion. The bottle main body has first and second openings in communication with outside the liquid collecting device. The collecting joint portion connects to the bottle main body through the first opening and includes a first coupling portion coupled to the flow passage member, and an internal flow passage extending between the first opening and the first coupling portion. The internal flow passage includes a throttle portion and a space. The first valve element is moveably provided in the space and the first valve element has an area larger than an opening area of the first opening and an opening area of the throttle portion.Type: ApplicationFiled: July 23, 2020Publication date: February 4, 2021Inventors: Tatsuo Nanjo, Yuji Tamaru
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Patent number: D923705Type: GrantFiled: October 21, 2019Date of Patent: June 29, 2021Inventors: Wataru Takahashi, Tatsuo Nanjo, Keisuke Iinuma, Norihiro Ikebe, Kenta Udagawa
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Patent number: RE49336Abstract: The printing apparatus of the present invention includes: a print head; and a liquid storage container in which a liquid storage chamber that stores a liquid to be supplied to the print head, an atmosphere communication chamber that communicates with the atmosphere, and a communication flow path that causes the liquid storage chamber and the atmosphere communication chamber to communicate are formed integrally. The liquid storage container can take a first posture in which the atmosphere communication chamber is located under the liquid storage chamber in the direction of gravity and a second posture in which the atmosphere communication chamber and the liquid storage chamber are located side by side in the horizontal direction. In the case where the liquid storage container is in the second posture, the liquid injection portion and the communication flow path are located on the upper side of the liquid storage container.Type: GrantFiled: December 27, 2019Date of Patent: December 20, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Yukimichi Kimura, Takahiro Kiuchi, Junichi Kubokawa, Kyohei Sato, Koki Shimada, Masaya Shimmachi, Yusuke Tanaka, Hideaki Matsumura, Keiichiro Tsukuda, Tatsuo Nanjo