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公开(公告)号：US12090760B2
公开(公告)日：2024-09-17
申请号：US17935674
申请日：2022-09-27
发明人： Jason Thelander , David Burke , Andrew Thomas
CPC分类号： B41J2/155 , B41J2/14 , B41J2/14145 , B41J2/1433 , B41J2/175 , B41J2/1752 , B41J2/17523 , B41J2/19 , B41J2/21 , B41J2/2103 , B41J25/34 , B41J2002/14362 , B41J2002/14419 , B41J2002/14491 , B41J2202/19 , B41J2202/20 , B41J2202/21
摘要： A pagewide printhead for redundant printing has first and second rows of printhead chips mounted on a common ink manifold. The ink manifold has four ink supply channels for supplying ink to the first and second rows of printhead chips. Dedicated ink outlets interconnect one ink supply channel of the ink manifold with two color channels in each printhead chip.
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公开(公告)号：USRE50097E1
公开(公告)日：2024-08-27
申请号：US17490062
申请日：2021-09-30
CPC分类号： B41J2/1752 , B41J2/17503 , B41J2/17513 , B41J2/17523 , B41J2/1753 , B41J2/19 , B41J29/13 , B41J29/38
摘要： For an image forming apparatus including first and second storage chambers, an inequality expression of “R2>A×R1” is met. R1 is a sum of a passage resistance value obtained by flowing air through a first air communication portion and a passage resistance value obtained by flowing liquid through a supply portion. R2 is a passage resistance value obtained by flowing air through a second air communication portion. A is a cross-sectional area ratio obtained by dividing a first average cross-sectional area of a first space of the first storage chamber taken along a plurality of horizontal planes by a second average cross-sectional area of a second space of the second storage chamber taken along the plurality of horizontal planes. The first space contains at least a portion adjacent to the supply portion and accumulating the liquid. The second space contains at least a portion accumulating the liquid.
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公开(公告)号：US12070956B2
公开(公告)日：2024-08-27
申请号：US17835481
申请日：2022-06-08
CPC分类号： B41J2/18 , B41J2/14024 , B41J2/14145 , B41J2/17563 , B41J2/17596 , B41J2/19 , B41J2202/12
摘要： 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.
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公开(公告)号：US20240246342A1
公开(公告)日：2024-07-25
申请号：US18399341
申请日：2023-12-28
发明人： Yuto SUZUKI , Hideaki ONISHI , Takanori TSUJI , Noboru HAMAGUCHI , Akihiro OGAWA , Miki NAKAGAWA , Mitsuru TANEMOTO , Takaharu YAMAMOTO
CPC分类号： B41J2/17596 , B41J2/17563 , B41J2/17566 , B41J2/185 , B41J2/19
摘要： An inkjet printing apparatus includes a discharge head configured to discharge ink, a supply tank in which ink supplied to the discharge head is stored, a collecting tank in which ink collected from the discharge head is stored, a connecting pipe connecting the supply tank and the collecting tank, a circulation pump that is interposed in the connecting pipe and is configured to deliver ink from the collecting tank to the supply tank, a replenishment tank in which ink with which the supply tank is replenished is stored, a replenishment pipe connecting the replenishment tank and the connecting pipe, and a replenishment pump that is interposed in the replenishment pipe and is configured to deliver ink from the replenishment tank to the connecting pipe. A connection point of the replenishment pipe and the connecting pipe is positioned between the circulation pump and the supply tank.
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公开(公告)号：US11858272B2
公开(公告)日：2024-01-02
申请号：US17674846
申请日：2022-02-18
发明人： Po-Chih Chang , Pei-Chi Ho , Ya-Ching Tung , Chi-Kuang Shen , Shou-Chih Sun , Yao-Te Huang
CPC分类号： B41J2/17513 , B41J2/17553 , B41J2/19
摘要： An ink circulation system, including an ink cartridge, an ink tank, an ink pump, first, second, and third valves, a print head, a heating assembly, and a positive-negative pressure assembly, is provided. The ink cartridge has an output pipeline and an ink cartridge valve. The ink tank is disposed on one side of the ink cartridge and connected to the output pipeline. The ink pump is connected to the output pipeline and the ink tank through an ink pipeline. The first valve is connected to the ink tank through a first pipeline. The second valve is disposed on the output pipeline. The third valve is connected to the output pipeline and the ink pipeline through a return pipeline. The print head is connected to the ink tank and the return pipeline. The heating assembly is disposed in the ink tank. The positive-negative pressure assembly is connected to the first pipeline.
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公开(公告)号：US20230302809A1
公开(公告)日：2023-09-28
申请号：US18326056
申请日：2023-05-31
发明人： Masahiro HAYASHI , Akinari ISHIBE , Yuma TANABE , Masatake SATO , Akihito KOBAYASHI , Hiroaki TAKAHASHI
CPC分类号： B41J2/17523 , B41J2/17533 , B41J2/14274 , C09D11/40 , B41J2/17513 , B41J2/17509 , B41J2/1752 , B41J2/17553 , B41J2/19 , B41J29/02 , C09D11/30
摘要： An image-recording apparatus includes: a first tank defining a first storage chamber; a second tank defining a second storage chamber; a conveying mechanism for conveying sheets along a conveying path extending in a depthwise direction and a widthwise direction perpendicular to a vertical direction and the depthwise direction; and a recording head including a nozzle. Liquid in the first storage chamber is supplied through a communication port to the second storage chamber and then to the recording head through a liquid outlet port. The second storage chamber is positioned further in a first depthwise direction relative to the nozzle and further in a first widthwise direction relative to the conveying path. A volume of a prescribed space above a liquid level equal to a height of the communication port in the second storage chamber is greater than that of a liquid channel between the liquid outlet port and the nozzle.
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公开(公告)号：US20230234370A1
公开(公告)日：2023-07-27
申请号：US18086750
申请日：2022-12-22
摘要： An inkjet printing apparatus is provided with a tank that stores ink, a print head that performs print operation by ejecting ink supplied from the tank, a circulation unit that establishes a circulating state to circulate ink in a circulation path if print operation is performed and establishes a stopped state to stop circulation of ink if print operation is terminated, and a deaeration unit that performs deaeration operation to deaerate ink inside the circulation path. The apparatus includes an estimation unit that estimates a dissolved gas amount in ink inside the circulation path based on dissolved gas amounts increased in the circulating state and in the stopped state, respectively, and a control unit that causes the deaeration unit to execute deaeration operation after completion of print operation if the dissolved gas amount estimated by the estimation unit exceeds a predetermined threshold.
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公开(公告)号：US20230191794A1
公开(公告)日：2023-06-22
申请号：US18065346
申请日：2022-12-13
发明人： KAZUYA YOSHII , NAOZUMI NABESHIMA , SOJI KONDO
CPC分类号： B41J2/17596 , B41J2/19 , B41J2/14 , B41J2002/14467
摘要： A liquid ejection head includes a pressure chamber, an upstream channel, a downstream channel, a pump, an inflow channel, and a bypass channel. The upstream channel communicates with the pressure chamber to supply the liquid to the pressure chamber. The downstream channel communicates with the pressure chamber. The pump communicates with the upstream channel and the downstream channel to cause the liquid in the downstream channel to flow into the upstream channel. The inflow channel communicates with the upstream channel to cause the liquid to be supplied to the pressure chamber to flow into the upstream channel. The upstream channel and the downstream channel communicate with each other through the bypass channel without the pressure chamber being between the upstream channel and the downstream channel. Part of the liquid flowing from the upstream channel into the bypass channel flows into the pressure chamber through the downstream channel.
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公开(公告)号：US20230166520A1
公开(公告)日：2023-06-01
申请号：US18060127
申请日：2022-11-30
发明人： Satoru KOBAYASHI
CPC分类号： B41J2/17563 , B41J2/19 , B41J2/17566 , B41J2/17596 , B41J2002/17579
摘要： A liquid ejecting apparatus includes: an ejecting portion configured to be able to eject a liquid onto a medium; a supply flow path configured to be able to supply the liquid to the ejecting portion; a liquid storage unit coupled to the supply flow path and configured to be able to store the liquid, the liquid storage unit being a unit in which an air-liquid interface where the liquid and air are in contact is formed; a first filter provided lower than the air-liquid interface and configured to separate the supply flow path and the liquid storage unit; an adjustment mechanism configured to lift a position of the air-liquid interface in the liquid storage unit; and a control unit configured to control the adjustment mechanism.
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公开(公告)号：US11648777B2
公开(公告)日：2023-05-16
申请号：US17464457
申请日：2021-09-01
发明人： Yoshinori Misumi , Yuzuru Ishida , Maki Kato , Takeru Yasuda , Tsubasa Funabashi
CPC分类号： B41J2/1652 , B41J2/16517 , B41J2/18 , B41J2/19 , B41J2/14072 , B41J2202/07
摘要： An object is to provide a liquid ejection apparatus and a method of controlling a liquid ejection apparatus capable of preventing bubbles generated by kogation removal from interfering with the kogation removal. To this end, in a long liquid ejection head with a liquid circulated therethough, a pressure chamber is pressurized and a voltage is applied to a heat applying portion and an electrode to perform kogation removing cleaning.
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