Patents by Inventor Masaru Ohnishi

Masaru Ohnishi 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).

  • Publication number: 20220080752
    Abstract: To suppress the risk of ink bleeding and thereby attain an improved printing quality, a printing apparatus is provided that carries out an inkjet printing operation for a medium. The printing apparatus includes inkjet heads that eject droplets of ink using inkjet technique; and ultraviolet light sources that radiate ultraviolet light. The ink ejected from the inkjet heads contains an ultraviolet absorbent that absorbs ultraviolet light, and a solvent that dissolves or disperses the ultraviolet absorbent. The ejected ink is adherable to the medium and fixable by evaporating the solvent. The ultraviolet light sources irradiate the ink adhered to the medium with ultraviolet light so as to volatilize and remove at least part of the solvent from the ink.
    Type: Application
    Filed: November 23, 2021
    Publication date: March 17, 2022
    Applicant: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru OHNISHI
  • Publication number: 20210387463
    Abstract: Powdering on a front surface of a printed matter or the like is appropriately performed. A printing apparatus configured to perform printing on a medium includes: an ink ejection portion configured to eject an ink to the medium; and a powdering portion configured to perform powdering that applies powder to the medium. The powdering portion includes: a liquid applying device configured to apply, to the medium, a powder containing liquid that is a liquid including the powder and a solvent and an energy ray emitting portion configured to irradiate the powder containing liquid applied to the medium with energy rays. The powder containing liquid is a liquid that generates heat when irradiated with energy rays. The energy ray emitting portion irradiates the powder containing liquid applied to the medium with energy rays to evaporate the solvent of the powder containing liquid, so that the powder adheres to the medium.
    Type: Application
    Filed: October 4, 2019
    Publication date: December 16, 2021
    Applicant: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru OHNISHI
  • Patent number: 11167569
    Abstract: A dye printing method and an ink capable of performing printing on more types of media than in the related art are shown. A dye printing method using ink 10 containing a solvent 11, and particles 12 of a thermoplastic resin dispersed in the solvent 11 and containing a dye 13 is characterized by including a printing process of performing a printing on a medium 20 with the ink 10, a particle fixing process of fixing the particles 12 to the medium 20 by drying the solvent 11 of the ink 10 ejected to the medium 20 by the printing process, and a resin fixing process of fixing the thermoplastic resin to the medium 20 by heating the particles 12 fixed to the medium 20 by the particle fixing process, at least at a glass-transition temperature or higher.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: November 9, 2021
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Patent number: 11084302
    Abstract: An inkjet printing apparatus includes a mounting unit where a recording medium is mountable, a head unit that ejects ink droplets to the recording medium, a planar direction driving unit that drives at least one of the head unit ejecting the ink droplets and the mounting unit to move in a planar direction and that changes a relative positions of the head unit and the mounting unit in the planar direction, and a height direction driving unit that changes a relative positions of the head unit and the mounting unit in a height direction perpendicular to the planar direction. The planar direction driving unit has a moving speed changing mechanism that changes a carriage speed between the head unit and the mounting unit in the planar direction. The height direction driving unit has a distance changing mechanism that changes a distance between the head unit and the mounting unit.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: August 10, 2021
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Patent number: 11065901
    Abstract: A transfer method is provided and includes a disposing step of disposing a transfer sheet and a medium in an inside of a sealed space formed by using a pressure welding sheet having flexibility in at least one part; a pressure welding step of suctioning the inside of the sealed space by a negative pressure and pressure welding the pressure welding sheet and the medium by the negative pressure to closely attach the transfer sheet and the medium; an irradiating step of softening an adhesive layer of the transfer sheet by irradiation of a light ray in a state in which the transfer sheet is closely attached to the medium by the pressure welding sheet and adhering the adhesive layer to the medium by a pressure welding force from the pressure welding sheet; and a peeling step of peeling off the transfer sheet from the medium after the irradiating step.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: July 20, 2021
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Patent number: 11059314
    Abstract: A printing method that carries out printing using a mesh screen, which is a screen gauze including multiple holes, is provided. The printing method includes: a covering process of covering one surface of the mesh screen with a covering member; an entering process of entering the covering member to at least a middle of the hole from a side of the one surface with respect to the multiple holes of the mesh screen; a mask forming process of ejecting a mask forming liquid used to form a mask that covers one part of an other surface of the mesh screen from an ejection head, to form the mask; a peeling process of peeling the covering member from the mesh screen; and a print executing process of printing an image corresponding to a pattern of the mask on the medium using the mesh screen and the printing ink.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: July 13, 2021
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Publication number: 20210107295
    Abstract: A printing device performs printing through an inkjet system includes an inkjet head, an ultraviolet irradiator, and a controller. An ink ejected by the inkjet head contains a curable substance and a solvent. The controller is configured to: cause the inkjet head to perform an ejecting operation; cause the ultraviolet irradiator to perform a viscosity increasing operation and a curing operation; cause, in the viscosity increasing operation, the ultraviolet irradiator to irradiate the ink with ultraviolet light to evaporate at least a part of the solvent in the ink by heat of polymerization and increase the viscosity of the ink to a viscosity at which smearing does not occur on the medium; and cause, in the curing operation, the ultraviolet irradiator to irradiate the ink with ultraviolet light to cure the ink on the medium.
    Type: Application
    Filed: October 6, 2020
    Publication date: April 15, 2021
    Applicant: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru OHNISHI
  • Patent number: 10967652
    Abstract: To perform high-quality printing more appropriately, a printing device that performs printing on a medium includes: an inkjet head as a head for pretreatment agent that ejects a pretreatment agent; inkjet heads as heads for color ink; and an ultraviolet ray irradiation unit as an energy ray irradiation unit. The pretreatment agent is a liquid that contains a solvent and generates heat in response to ultraviolet rays. The ultraviolet ray irradiation unit emits ultraviolet rays to respective positions at which printing is performed on the medium after the inkjet head ejects the pretreatment agent, and evaporates at least part of the solvent in the pretreatment agent.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: April 6, 2021
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Patent number: 10960686
    Abstract: A printing apparatus is provided and includes: a platen that supports a medium; an inkjet head provided to face the medium, the inkjet head ejecting an ink containing a charge controlling agent toward the medium by driving a drive element to land the charged ink droplet, which becomes a polarity of one of the positive polarity and the negative polarity, on the medium; and a voltage applying part that applies to at least one of the platen and the medium to have the other polarity of the positive polarity and the negative polarity.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: March 30, 2021
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Patent number: 10926554
    Abstract: A printing apparatus and a printing method are provided. The printing apparatus that performs a printing through an inkjet method includes: a conveyor driver which is a medium conveyor device; a plurality of ink ejection portions arranged side by side along a conveyance direction; and a plurality of ultraviolet light sources which are a plurality of fixing devices. Each of the ink ejection portions includes a plurality of inkjet heads arranged side by side along the conveyance direction. Each of the plurality of ultraviolet light sources is disposed on a downstream side in the conveyance direction with respect to any one of the ink ejection portions. After the medium passes a position facing the plurality of inkjet heads in one of the ink ejection portions, the ink ejected by the one of the ink ejection portions is fixed to the medium.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: February 23, 2021
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Patent number: 10828912
    Abstract: A wider variety of printing is performed more appropriately using ink that generates heat by energy radiation. A printing method of performing a printing on a medium using a color ink includes a water-soluble ink layer forming step of forming a water-soluble ink layer that is a layer of ink that becomes water-soluble after fixing, a color ink layer forming step of ejecting the color ink to the medium to form a color ink layer that is a layer of the color ink, and a water-soluble ink layer removing step of removing the water-soluble ink layer. The color ink includes a colorant and a solvent and generates heat by radiation of an energy ray. In the color ink layer forming step, the energy ray is emitted to the color ink after ink droplets landing to remove by evaporation at least a part of the solvent included in the color ink.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: November 10, 2020
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Publication number: 20200338914
    Abstract: An inkjet printing apparatus includes a mounting unit where a recording medium is mountable, a head unit that ejects ink droplets to the recording medium, a planar direction driving unit that drives at least one of the head unit ejecting the ink droplets and the mounting unit to move in a planar direction and that changes a relative positions of the head unit and the mounting unit in the planar direction, and a height direction driving unit that changes a relative positions of the head unit and the mounting unit in a height direction perpendicular to the planar direction. The planar direction driving unit has a moving speed changing mechanism that changes a carriage speed between the head unit and the mounting unit in the planar direction. The height direction driving unit has a distance changing mechanism that changes a distance between the head unit and the mounting unit.
    Type: Application
    Filed: July 9, 2020
    Publication date: October 29, 2020
    Applicant: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru OHNISHI
  • Patent number: 10792937
    Abstract: To perform high-quality printing more appropriately, a printing apparatus (10) configured to print on a medium (50) by inkjet includes: an inkjet head (102); and a UV light source (104) as an energy ray emitting unit. The UV light source (104) emits the ultraviolet rays to the ink adhered to the medium (50), causing the ink to generate heat to evaporate at least a part of a solvent in the ink. The ink ejected by the inkjet head (102) includes a polymerizing substance that polymerizes when irradiated with the energy rays, and the solvent. The ink on the medium (50) is in a state in which planarization of the ink progresses with a lapse of time at a time point after 100 ms has elapsed since the UV light source (104) emitted the ultraviolet rays.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: October 6, 2020
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Patent number: 10787004
    Abstract: Disclosed is a printing apparatus which performs printing on a medium in an inkjet mode. The printing apparatus includes inkjet heads and an ultraviolet irradiation section that is an energy ray irradiation section. In this printing apparatus, the ink is an ink containing a solvent and generating heat in accordance with ultraviolet rays. The ultraviolet irradiation section applies the ultraviolet ray to the ink on the medium to evaporate at least a portion of the solvent in the ink. When 45% by volume or more of the solvent evaporates from an initial solvent amount, the viscosity of the ink is 50 mPa┬Ěsec or more.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: September 29, 2020
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Publication number: 20200298593
    Abstract: An inkjet printer is provided. The printing unit prints an image on a medium by ejecting an ink onto the medium while moving in the main scanning direction. The printing unit includes a carriage, an inkjet head, a fixing device (drying device), a left air supply part, an intermediate air supply part, a right air supply part, and an intake part. The intake part takes in air by suctioning gas on a lower side. The gas on the lower side includes, in addition to air, a solvent evaporated when drying the ink (also referred to as a solvent vapor), and a misted ink that is mist of the ink ejected from the inkjet head.
    Type: Application
    Filed: March 16, 2020
    Publication date: September 24, 2020
    Applicant: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru OHNISHI
  • Patent number: 10744804
    Abstract: An inkjet printing apparatus includes a mounting unit where a recording medium is mountable, a head unit that ejects ink droplets to the recording medium, a planar direction driving unit that drives at least one of the head unit ejecting the ink droplets and the mounting unit to move in a planar direction and that changes a relative positions of the head unit and the mounting unit in the planar direction, and a height direction driving unit that changes a relative positions of the head unit and the mounting unit in a height direction perpendicular to the planar direction. The planar direction driving unit has a moving speed changing mechanism that changes a carriage speed between the head unit and the mounting unit in the planar direction. The height direction driving unit has a distance changing mechanism that changes a distance between the head unit and the mounting unit.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: August 18, 2020
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Publication number: 20200215829
    Abstract: To suppress the risk of ink bleeding and thereby attain an improved printing quality, a printing apparatus 10 is provided that carries out an inkjet printing operation for a medium 50. The printing apparatus 10 includes inkjet heads 102 that eject droplets of ink using inkjet technique; and ultraviolet light sources 104 that radiate ultraviolet light. The ink ejected from the inkjet heads 102 contains an ultraviolet absorbent that absorbs ultraviolet light, and a solvent that dissolves or disperses the ultraviolet absorbent. The ejected ink is adherable to the medium 50 and fixable by evaporating the solvent. The ultraviolet light sources 104 irradiate the ink adhered to the medium 50 with ultraviolet light so as to volatilize and remove at least part of the solvent from the ink.
    Type: Application
    Filed: March 16, 2020
    Publication date: July 9, 2020
    Applicant: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru OHNISHI
  • Patent number: 10696059
    Abstract: A printing apparatus is provided that prints a print target on a medium made of chemical fiber fabric. The printing apparatus includes inkjet heads which are chromatic color heads that eject inks having chromatic colors, and an inkjet head which is a black color head that ejects ink having black color. The inks ejected from these inkjet heads are allowed to dry by evaporation and each contain a solvent and a coloring material for expressing the ink color. The inks are dried by evaporating the solvents in the inks to be fixed to the medium. The chromatic color heads include at least six or more inkjet heads that respectively eject the inks having chromatic colors distinct from each other.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: June 30, 2020
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Patent number: 10689761
    Abstract: A plating method includes a first mask forming step of ejecting a UV-curable ink in the form of ink droplets from an inkjet head so as to have the ejected ink droplets land on a plating target object and to form a first plating mask on the plating target object, a catalyst applying step of applying a catalyst for deposition of plating material to the plating target object on which the first plating mask is formed, a second mask forming step of having the ink droplets land on the first plating mask so as to form a second plating mask on the first plating mask, a plating step of performing electroless plating to the plating target object subsequent to the second mask forming step, and a mask removing step of removing the first plating mask and the second plating mask from the plating target object subsequent to the plating step.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: June 23, 2020
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi
  • Patent number: 10618318
    Abstract: To suppress the risk of ink bleeding and thereby attain an improved printing quality, a printing apparatus is provided that carries out an inkjet printing operation for a medium. The printing apparatus includes inkjet heads that eject droplets of ink using inkjet technique; and ultraviolet light sources that radiate ultraviolet light. The ink ejected from the inkjet heads contains an ultraviolet absorbent that absorbs ultraviolet light, and a solvent that dissolves or disperses the ultraviolet absorbent. The ejected ink is adherable to the medium and fixable by evaporating the solvent. The ultraviolet light sources irradiate the ink adhered to the medium with ultraviolet light so as to volatilize and remove at least part of the solvent from the ink.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: April 14, 2020
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Masaru Ohnishi