Patents by Inventor Katsuko Aoki

Katsuko Aoki 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).

  • Patent number: 8632154
    Abstract: An ink jet recording method includes a first process in which a coloring ink is recorded on a recording medium using an ink jet head so as to form a first image, a second process in which a background ink is recorded using the ink jet head so as to form a background image that covers the first image, and a third process in which a coloring ink is recorded using the ink jet head so as to form a second image, and a drying process is included between the first process and the third process.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: January 21, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Katsuko Aoki, Yoshiko Azami, Shoki Kasahara
  • Patent number: 8614264
    Abstract: An ink jet recording method includes ejecting droplets of an aqueous ink composition on an ink-non-absorbent or ink-low-absorbent recording medium from an ink jet recording apparatus, and drying the aqueous ink composition on the recording medium by heating the recording medium to 40° C. or more. The aqueous ink composition used in the method contains a pigment, a first solvent and a second solvent, but does not contain glycerol. The first solvent content W‘is in the range of 3% to 6% by mass, and the ratio W2/W1 of the second solvent content W2 to the first solvent content W1 is 2 or more.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: December 24, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Katsuko Aoki, Hiroshi Mukai
  • Publication number: 20130293651
    Abstract: An inkjet recording method for printing by ejecting droplets of a water-based ink composition onto a recording medium having a recording surface which is a plastic film and by causing the droplets to adhere to the recording surface, including: using, as the water-based ink composition, a water-based ink composition including at least colorant, between 0.1 wt % and 1.5 wt % of a silicon-based surfactant, alkanediol, pyrrolidone derivative, thermoplastic resin, and water; and heating the water-based ink composition that has adhered to the recording surface to a temperature of 40° C. or higher.
    Type: Application
    Filed: July 10, 2013
    Publication date: November 7, 2013
    Inventors: Hiroshi MUKAI, Katsuko AOKI
  • Patent number: 8523343
    Abstract: An ink jet recording method includes ejecting droplets of an aqueous ink composition from an ink jet recording apparatus onto a non-ink-absorbing or low-ink-absorbing recording medium, and heating the recording medium to 40° C. or more to dry the aqueous ink composition deposited on the recording medium, wherein the first solvent content (W1) is 3% by mass or more and 6% by mass or less of the mass of the aqueous ink composition, the ratio (W2/W1) of the second solvent content (W2) to the first solvent content (W1) is one or more, and the ratio [(W2+W3)/(W1)] of the total (W2+W3) of the second solvent content (W2) and the third solvent content (W3) to the first solvent content (W1) is three or more.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: September 3, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Katsuko Aoki, Hiroshi Mukai
  • Patent number: 8500264
    Abstract: A recording method for printing on a plastic film surface of a print medium by ejecting droplets of a water-based ink composition onto the plastic film surface includes applying a water-based ink composition on the plastic film surface, and heating the water-based ink composition on the plastic film surface to a temperature of 40° C. or more. The water-based ink composition contains a coloring agent, 0.1% to 1.5% by weight of a silicone surfactant, an acetylene glycol surfactant, a pyrrolidone derivative, a thermoplastic resin, and water.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: August 6, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Mukai, Katsuko Aoki
  • Patent number: 8474966
    Abstract: Recording onto a non-ink-absorbing or low-ink-absorbing recording medium is performed using an aqueous ink composition containing a first solvent composed of a glycol diether having a boiling point of 150 to 220° C., a second solvent composed of at least one selected from 1,2-hexanediol and 1,2-pentanediol, and a third solvent composed of a glycol having a boiling point of 170 to 220° C. and conducting two drying steps at different heating conditions.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: July 2, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Katsuko Aoki, Hiroshi Mukai
  • Patent number: 8474967
    Abstract: Recording onto a non-ink-absorbing recording medium is performed using an aqueous ink composition containing a first solvent composed of at least one selected from 2-pyrrolidone, 1,3-dimethyl-imidazolidinone, and N,N?-dimethylpropylene urea, a second solvent composed of at least one selected from 1,2-hexanediol and 1,2-pentanediol, and a third solvent composed of at least one selected from glycol diethers and heating the non-ink-absorbing recording medium at 40 to 60° C.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: July 2, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Katsuko Aoki, Hiroshi Mukai
  • Publication number: 20120249705
    Abstract: An ink jet recording method includes heating an ink non-absorbent or low ink-absorbing recording medium to a temperature of 40° C. to 110° C. and performing recording using an aqueous ink composition containing a water-insoluble colorant, a paraffin wax, resin particles, and water.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 4, 2012
    Applicant: Seiko Epson Corporation
    Inventors: Katsuko Aoki, Hiroshi Mukai
  • Publication number: 20120252942
    Abstract: An aqueous ink composition includes at least one kind of water-insoluble colorant and a wax in which the wax is a paraffin wax with a melting point of 60° C. to 110° C. and an average particle size of 30 nm to 250 nm.
    Type: Application
    Filed: March 29, 2012
    Publication date: October 4, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Katsuko AOKI, Hiroshi MUKAI
  • Publication number: 20110234728
    Abstract: Recording onto a non-ink-absorbing recording medium is performed using an aqueous ink composition containing a first solvent composed of at least one selected from 2-pyrrolidone, 1,3-dimethyl-imidazolidinone, and N,N?-dimethylpropylene urea, a second solvent composed of at least one selected from 1,2-hexanediol and 1,2-pentanediol, and a third solvent composed of at least one selected from glycol diethers and heating the non-ink-absorbing recording medium at 40 to 60° C.
    Type: Application
    Filed: March 28, 2011
    Publication date: September 29, 2011
    Applicant: Seiko Epson Corporation
    Inventors: Katsuko Aoki, Hiroshi Mukai
  • Publication number: 20110234726
    Abstract: An ink jet recording method includes recording with an aqueous ink composition on a non-ink-absorbing or low-ink-absorbing recording medium. The aqueous ink composition contains a water-insoluble colorant, water-insoluble thermoplastic resin particles, a surfactant, a first solvent including at least one selected from 2-pyrrolidone and N,N?-dimethylpropylene urea, a second solvent including 1,2-hexanediol, and a third solvent including at least one selected from glycol diethers having a boiling point of 240° C. or more and 280° C. or less.
    Type: Application
    Filed: March 25, 2011
    Publication date: September 29, 2011
    Inventors: Hiroshi Mukai, Katsuko Aoki
  • Publication number: 20110234727
    Abstract: Recording onto a non-ink-absorbing or low-ink-absorbing recording medium is performed using an aqueous ink composition containing a first solvent composed of a glycol diether having a boiling point of 150 to 220° C., a second solvent composed of at least one selected from 1,2-hexanediol and 1,2-pentanediol, and a third solvent composed of a glycol having a boiling point of 170 to 220° C. and conducting two drying steps at different heating conditions.
    Type: Application
    Filed: March 28, 2011
    Publication date: September 29, 2011
    Applicant: Seiko Epson Corporation
    Inventors: Katsuko Aoki, Hiroshi Mukai
  • Publication number: 20110183125
    Abstract: An ink jet recording method includes ejecting droplets of an aqueous ink composition from an ink jet recording apparatus onto a non-ink-absorbing or low-ink-absorbing recording medium, and heating the recording medium to 40° C. or more to dry the aqueous ink composition deposited on the recording medium, wherein the first solvent content (W1) is 3% by mass or more and 6% by mass or less of the mass of the aqueous ink composition, the ratio (W2/W1) of the second solvent content (W2) to the first solvent content (W1) is one or more, and the ratio [(W2+W3)/(W1)] of the total (W2+W3) of the second solvent content (W2) and the third solvent content (W3) to the first solvent content (W1) is three or more.
    Type: Application
    Filed: January 28, 2011
    Publication date: July 28, 2011
    Applicant: Seiko Epson Corporation
    Inventors: Katsuko Aoki, Hiroshi Mukai
  • Publication number: 20110183124
    Abstract: An ink jet recording method includes ejecting droplets of an aqueous ink composition on an ink-non-absorbent or ink-low-absorbent recording medium from an ink jet recording apparatus, and drying the aqueous ink composition on the recording medium by heating the recording medium to 40° C. or more. The aqueous ink composition used in the method contains a pigment, a first solvent and a second solvent, but does not contain glycerol. The first solvent content W1 is in the range of 3% to 6% by mass, and the ratio W2/W1 of the second solvent content W2 to the first solvent content W1 is 2 or more.
    Type: Application
    Filed: January 28, 2011
    Publication date: July 28, 2011
    Applicant: Seiko Epson Corporation
    Inventors: Katsuko Aoki, Hiroshi Mukai
  • Patent number: 7731789
    Abstract: An ink composition containing an aprotic polar solvent, a thermoplastic resin, a pigment, a cyclic amide, a surfactant, and water and is printable on a recording surface that is a plastic film. The ink composition is capable of forming a record, having high weather resistance properties such as adhesion, scratch resistance, and water resistance, on a recording surface that is a plastic film.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: June 8, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Katsuko Aoki, Tsuyoshi Sano
  • Publication number: 20100092674
    Abstract: An ink jet recording method for forming an image by adhering water-based ink to a metallic foil medium, in which the method includes forming an image while heating the medium to 40° C. to 50° C., the amount of ink droplets to be adhered to the medium is 4 to 25 ng per dot, and the water-based ink contains a pigment, 3 to 11 mass of a water-soluble resin solvent, 0.5 to 1.1 mass of a water-soluble resin, 2.1 to 4.5 mass of a resin emulsion, and a surfactant.
    Type: Application
    Filed: October 13, 2009
    Publication date: April 15, 2010
    Inventors: Hiroshi MUKAI, Katsuko AOKI
  • Publication number: 20100092675
    Abstract: An ink jet recording method for forming an image by adhering water-based ink to a non-absorbing or low-absorbing medium, including: forming an image while heating the medium, in which the water-based ink contains a first solvent having a boiling point of 210° C. to 280° C., a second solvent having a boiling point of 150° C. to 280° C., a water-insoluble colorant, a water-soluble resin, thermoplastic resin particles, a silicon surfactant, and water, and the surface tension when the first solvent is formed into an aqueous solution is lower than the surface tension when the second solvent is formed into an aqueous solution.
    Type: Application
    Filed: October 14, 2009
    Publication date: April 15, 2010
    Inventor: Katsuko Aoki
  • Publication number: 20100086690
    Abstract: A printing method employing an ink jet recording technique includes forming an image with an ink jet recording technique by ejecting droplets of a water-based ink composition onto a recording medium having no or low ink absorbency; and drying the water-based ink composition on the recording medium, the drying being conducted so as to at least overlap the forming. The water-based ink composition contains 2-pyrrolidone, a water-insoluble coloring agent, a water-soluble resin, thermoplastic resin particles, a silicone-based surfactant, 1,2-hexanediol, 1,3-propanediol, and water. The content of the 2-pyrrolidone in the water-based ink composition is 3.0 to 10.0 mass %; and the content of the 1,3-propanediol in the water-based ink composition is 5.0 to 10.0 mass %.
    Type: Application
    Filed: October 7, 2009
    Publication date: April 8, 2010
    Inventor: Katsuko AOKI
  • Publication number: 20100086691
    Abstract: A printing method employing an ink jet recording technique includes: forming an image with an ink jet recording technique by ejecting droplets of a water-based ink composition onto a recording medium having no or low ink absorbency; and drying the water-based ink composition on the recording medium, the drying being conducted so as to at least overlap the forming. The water-based ink composition contains at least one selected from N-methyl-2-pyrrolidone, tetramethylurea, and dimethyl sulfoxide; a water-insoluble coloring agent; a water-soluble resin; thermoplastic resin particles; a silicone-based surfactant; an acetylene glycol-based surfactant; a penetrating agent; a moisture retaining agent; and water. The total content of the N-methyl-2-pyrrolidone, the tetramethylurea, and the dimethyl sulfoxide in the water-based ink composition is 3.0 to 10.0 mass %. The content of the penetrating agent in the water-based ink composition is 3.0 to 8.0 mass %.
    Type: Application
    Filed: October 7, 2009
    Publication date: April 8, 2010
    Inventors: Hiroshi MUKAI, Katsuko AOKI
  • Patent number: 7665822
    Abstract: The present invention provides an ink jet recording apparatus having an ink jet recording head provided with a plurality of nozzles through which inks of a plurality of colors are ejected, a cap to be detachably brought into close contact with a nozzle face in which holes of the plurality of nozzles are formed, and ink-suction means which sucks an ink within the ink jet recording head by way of the cap. The apparatus is configured such that contact angles ?a of the inks with respect to the nozzle face and contact angles ?b of the inks with respect to the cap have a relation of ?a>?b; and the angles ?a are 50° or larger, and differences between the angles ?a and the angles ?b are 40° or larger.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: February 23, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Katsuko Aoki