公开(公告)号：US20240343045A1

公开(公告)日：2024-10-17

申请号：US18682151

申请日：2022-06-27

Applicant: Hitachi Industrial Equipment Systems Co., Ltd.

Inventor： Yusuke OKAMOTO ,  Takahiro ARIMA ,  Akira MIYAO

IPC: B41J2/195 ,  B41J2/175 ,  B41J2/185

CPC classification number: B41J2/195 ,  B41J2/17566 ,  B41J2/17596 ,  B41J2/185

Abstract: An inkjet recording apparatus is made capable of preventing ink from sticking during inactivity of the apparatus and, when viscosity of ink contained in a main ink container has fallen outside an appropriate range of viscosity, adjusting ink viscosity to fall within the appropriate range. The apparatus is configured to perform repetitively supplying a solvent contained in a solvent container to the print head and letting the solvent flow back to an ink container through a circulation path and a collection path at intervals of a certain period of time during inactivity of printing by the print head through controlling the print head and a main body.

公开(公告)号：US20240326459A1

公开(公告)日：2024-10-03

申请号：US18573633

申请日：2022-07-07

Applicant: BOBST MEX SA

Inventor： Francisco Javier PEREZ GELLIDA

IPC: B41J2/195 ,  B41J2/18

CPC classification number: B41J2/195 ,  B41J2/18

Abstract: The invention relates to an inkjet printing system (10) and method for controlling the jetting ink viscosity. A printing head (16) comprises a first pressure sensor (20) located at a fluid inlet (26) and a second pressure sensor (22) located at a fluid outlet (28). A control unit (24) is configured to retrieve the volumetric flow (Q) from a supply pump (18) of the inkjet printing system (10) and the inlet and outlet pressures (P_in, P_out) from the pressure sensors (20, 22). The control unit (24) is further configured to calculate an actual flow resistance (R_a) and a required temperature change (ΔT) of the ink such that a calibrated ink viscosity (μ_ref) is obtained.

公开(公告)号：US11801686B2

公开(公告)日：2023-10-31

申请号：US17200957

申请日：2021-03-15

Applicant: SEIKO EPSON CORPORATION

Inventor： Takahiro Netsu ,  Takuma Usuda

IPC: B41J2/175 ,  B41J2/21 ,  B41J2/195

CPC classification number: B41J2/195 ,  B41J2/17513 ,  B41J2/2107

Abstract: A printer includes an ink tank; a print head performing printing by using ink in the ink tank; a light source irradiating an inside of the ink tank with light; a sensor detecting light of a plurality of colors incident from the ink tank during a period in which the light source emits light; and a processing section estimating an ink type of the ink in the ink tank based on an output of the sensor at a position corresponding to a meniscus portion of the ink.

公开(公告)号：US20230173822A1

公开(公告)日：2023-06-08

申请号：US18061587

申请日：2022-12-05

Applicant: KONICA MINOLTA, INC.

Inventor： Katsuhiro UMEDA ,  Yusuke NISHISAKA ,  Hiroshi AKITA

IPC: B41J2/195 ,  B41J2/14 ,  B41J29/393

CPC classification number: B41J2/195 ,  B41J2/14233 ,  B41J29/393 ,  B41J2029/3935

Abstract: An image forming apparatus includes: an ink-jet head including a storage that stores phase transition ink, the ink jet head forms an image on a recording medium by ejecting the phase transition ink; and one or more hardware processors. The one or more hardware processors change a driving condition of the ink jet head for a case of ejecting the phase transition ink on a basis of a first reading result of a pattern image formed by the ink-jet head; estimate occurrence of a state change of the phase transition ink in the storage when the driving condition that is changed satisfies a predetermined condition; and determine whether a lifetime of the ink jet head is over in accordance with whether the occurrence of the state change is estimated.

公开(公告)号：US11366000B2

公开(公告)日：2022-06-21

申请号：US16929576

申请日：2020-07-15

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Michael W. Cumbie ,  Robert N. K. Browning

IPC: G01F23/24 ,  G01F23/22 ,  B41J2/175 ,  B41J2/195 ,  H05B3/82

Abstract: In some examples, a liquid container comprises a chamber forming a volume containing a liquid, an elongated strip extending into the volume containing the liquid, a plurality of heaters supported by the strip along the strip, and a plurality of temperature sensors supported by the strip along the strip. The temperature sensors output signals indicative of dissipation of heat from the heaters to indicate a level of the liquid in the volume.

公开(公告)号：US11318740B2

公开(公告)日：2022-05-03

申请号：US16882996

申请日：2020-05-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Yukihiro Hanaoka ,  Toshiro Murayama

IPC: B41J2/045 ,  B41J2/195 ,  B41J2/185

Abstract: A liquid ejecting system includes a liquid ejecting head having a nozzle ejecting liquid, a supply channel communicating with the nozzle, and a recovery channel communicated with the nozzle, and circulates the liquid in the liquid ejecting head through the supply channel and the recovery channel. The supply channel includes a pressurizing section and a first buffer mechanism disposed between the nozzle and the pressurizing section. The recovery channel includes a decompression section and a second buffer mechanism disposed between the nozzle and the decompression section. The first buffer mechanism is configured to increase a buffer capacity as the supply channel is pressurized. The second buffer mechanism is configured to reduce a buffer capacity as the recovery channel is decompressed.

公开(公告)号：US20220063285A1

公开(公告)日：2022-03-03

申请号：US17401162

申请日：2021-08-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takuya Hane ,  Takaya Sato

IPC: B41J2/175 ,  B41J2/185 ,  B41J2/195

Abstract: A printing apparatus includes a tank configured to store a liquid to be supplied to a print head, a supply channel configured to supply the liquid from the tank to the print head, a replenishment channel configured to replenish the tank with the liquid, and a stirring unit in the tank, the stirring unit being configured to stir the liquid in the tank by rotating in a first rotation direction. A first distance from a supply port at which the supply channel opens in the tank to a replenishment port at which the replenishment channel opens in the tank in the first rotation direction is less than a second distance from the replenishment port to the supply port in the first rotation direction.

公开(公告)号：US11230097B2

公开(公告)日：2022-01-25

申请号：US16834546

申请日：2020-03-30

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Alexander Govyadinov ,  Paul A. Richards ,  Chris Bakker

IPC: B41J2/045 ,  B41J2/17 ,  B41J2/195 ,  B41J2/20 ,  B41J2/14 ,  B41J2/175 ,  B41J2/18 ,  B41J2/165

Abstract: A fluid ejection device includes a fluid slot, at least one fluid ejection chamber communicated with the fluid slot, a drop ejecting element within the at least one fluid ejection chamber, a fluid circulation channel communicated with the fluid slot and the at least one fluid ejection chamber, and a fluid circulating element communicated with the fluid circulation channel. The fluid circulating element is to provide on-demand circulation of fluid from the fluid slot through the fluid circulation channel and the at least one fluid ejection chamber.

公开(公告)号：US20210300065A1

公开(公告)日：2021-09-30

申请号：US17210641

申请日：2021-03-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Kohei TATSUTA ,  Tadashi ISHIKAWA

IPC: B41J11/00 ,  B41J2/195 ,  B41J29/393

Abstract: A printing apparatus includes a medium accommodation portion that accommodates a medium, a medium discharge port for discharging the medium to an outside of the printing apparatus, a medium transport section that transports the medium along a transport path from the medium accommodation portion toward the medium discharge port, an ejection head that ejects a liquid to the medium to form an image on the medium, a heat generation section that dries the liquid ejected to the medium by heat, and an image detection section that detects the image formed on the medium. The ejection head, the heat generation section, and the image detection section are provided along the transport path. The ejection head is located between the heat generation section and the image detection section in a direction along the transport path.

公开(公告)号：US20210237454A1

公开(公告)日：2021-08-05

申请号：US17159756

申请日：2021-01-27

Applicant: Juichi Furukawa ,  Tatsuya Tomura

Inventor： Juichi Furukawa ,  Tatsuya Tomura

IPC: B41J2/17 ,  B41J2/195

Abstract: An image recording method is provided. The image recording method includes the steps of: applying a treatment liquid containing a pore forming material onto a recording medium to form a porous layer; and applying a metallic ink containing a metallic pigment onto the porous layer. A surface tension of the metallic ink at 23° C. is equal to or greater than a surface tension of the treatment liquid at 23° C. The surface tension of the metallic ink at 23° C. is 19 mN/m or more and 28 mN/m or less.