Patents by Inventor Naohiro Toda

Naohiro Toda 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: 9446606
    Abstract: An aqueous ink for inkjet includes water; a hydrosoluble organic solvent; a pigment; and a particulate resin. The hydrosoluble organic solvent includes 2,3-butanediol and 1,2-propanediol at a weight ratio (2,3-butanediol/1,2-propanediol) of from 98/2 to 60/40.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: September 20, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Ichiroh Fujii, Naohiro Toda, Tomohiro Nakagawa, Hidefumi Nagashima, Juichi Furukawa
  • Publication number: 20160264808
    Abstract: Ink having high adhesiveness for various substrates. The ink contains water, an organic solvent, at least one compound selected from formulae (1) and (2), and at least two kinds of resin particles. Ink-jet method. Record.
    Type: Application
    Filed: March 7, 2016
    Publication date: September 15, 2016
    Inventors: Masahiro KIDO, Naohiro Toda, Juichi Furukawa, Hidefumi Nagashima, Tomohiro Nakagawa, Noriaki Okada, Hikaru Kobayashi
  • Patent number: 9358360
    Abstract: In an illumination apparatus, a control unit starts lighting of a light source at a first time before a wake-up set time and executes a first control pattern to increase a dimming ratio of the light source from the first time to a second time determined based on the wake-up set time and a second control pattern to further increase the dimming ratio of the light source from the second time to a third time determined based on the wake-up set time. When a change curve of the dimming ratio in the first control pattern and the second control pattern is applied to a function represented by the equation: Y(t)=d+(a?d)/(1+(t/c)b), the time c becomes closer to the second time than the first time in the first control pattern, and becomes closer to the second time than the third time in the second control pattern.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: June 7, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Naohiro Toda, Kazuhiro Hatta
  • Patent number: 9358810
    Abstract: An inkjet recording method includes recording an image on a heated nonpermeable substrate with an aqueous ink by an inkjet method; and drying the aqueous ink, wherein the method satisfies the following requirements (1) to (3): (1) the aqueous ink comprises water, a hydrosoluble organic solvent, a pigment and a particulate resin, wherein the hydrosoluble organic solvent comprises a solvent having a boiling point not higher than 200° C. in an amount not less than 50% by weight; (2) the hydrosoluble organic solvent having a boiling point not higher than 200° C. comprises 3-methoxy-3-methyl-1-butanol; and (3) a difference of heating temperatures between the recording and the drying is from 25 to 80° C.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: June 7, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Ichiroh Fujii, Naohiro Toda, Tomohiro Nakagawa, Hidefumi Nagashima, Juichi Furukawa
  • Patent number: 9340692
    Abstract: An ink contains water, a hydrosoluble organic solvent, a colorant, a resin A; and a resin B, wherein the content of the resin B is from 0.5% by weight to less than 10% by weight to the content of the resin A and the resin B has a minimum film-forming temperature at least 30° C. lower than that of the resin A.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: May 17, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiro Nakagawa, Naohiro Toda, Hidefumi Nagashima, Juichi Furukawa, Hikaru Kobayashi
  • Patent number: 9321923
    Abstract: Aqueous ink for inkjet that contains water; a hydrosoluble organic solvent; a pigment; and a resin, wherein the hydrosoluble organic solvent comprises 2,3-butane diol having a total ratio of (2R, 3R) form and (2S, 3S) form of greater than 50% by weight in 2,3-butane diol, where (2R, 3R) form represents (2R, 3R)-(?)-2,3-butane diol and (2S, 3S) form represents (2S, 3S)-(+)-2,3-butane diol, wherein 2,3-butane diol accounts for 5% by weight to 40% by weight of the entire of the aqueous ink.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: April 26, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiro Nakagawa, Naohiro Toda, Hidefumi Nagashima, Juichi Furukawa, Ichiroh Fujii
  • Patent number: 9326364
    Abstract: An illumination system includes an illumination device, a control unit for controlling a turn-on operation of the illumination device, and a terminal through which manipulation information of the illumination device is inputted by a user. The control unit includes an information extracting unit for extracting illumination information, within a period between a first moment prior to a falling-asleep time of the user and a second moment after a wakeup time of the user, from manipulation information and operation information of the illumination device stored in a memory unit, and an information transceiver unit for transmitting and receiving the illumination information to and the terminal. The terminal includes a terminal transceiver unit for transmitting and receiving the illumination information to and from the control unit, a display unit for displaying the illumination information received through the terminal transceiver unit and an input unit by which the manipulation information is inputted.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: April 26, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hikaru Maeda, Takahiro Kurihara, Tomoaki Mannami, Hiroaki Kobayashi, Naohiro Toda, Kazuhiro Hatta
  • Publication number: 20160102220
    Abstract: An inkjet ink set is provided. The inkjet ink set includes a first ink including a resin A and an organic solvent A; and a second ink including a resin B and an organic solvent which is the same as or different from the organic solvent A. The minimum film forming temperature (MFT) of the resin A is lower than that of the resin B.
    Type: Application
    Filed: September 29, 2015
    Publication date: April 14, 2016
    Inventors: Masahiro KIDO, Naohiro TODA, Tomohiro NAKAGAWA, Juichi FURUKAWA, Hidefumi NAGASHIMA, Hikaru KOBAYASHI
  • Patent number: 9298113
    Abstract: An electrophotographic photoconductor, including: an electroconductive substrate; and at least a photoconductive layer and a surface layer in this order over the electroconductive substrate, wherein the surface layer includes a resin having no charge transport properties, and first inorganic fine particles, and wherein the first inorganic fine particles are inorganic fine particles having surfaces modified with at least one of a primary amino group and a secondary amino group, and a volume resistivity of the first inorganic fine particles is 1×108 ?·cm or less.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: March 29, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshihiro Ishida, Hiroshi Ikuno, Tetsuya Toshine, Naohiro Toda, Takafumi Iwamoto, Kazuhiro Egawa
  • Publication number: 20160074620
    Abstract: In an illumination apparatus, a control unit starts lighting of a light source at a first time before a wake-up set time and executes a first control pattern to increase a dimming ratio of the light source from the first time to a second time determined based on the wake-up set time and a second control pattern to further increase the dimming ratio of the light source from the second time to a third time determined based on the wake-up set time. When a change curve of the dimming ratio in the first control pattern and the second control pattern is applied to a function represented by the equation: Y(t)=d+(a?d)/(1+(t/c)b), the time c becomes closer to the second time than the first time in the first control pattern, and becomes closer to the second time than the third time in the second control pattern.
    Type: Application
    Filed: September 9, 2015
    Publication date: March 17, 2016
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Naohiro TODA, Kazuhiro HATTA
  • Patent number: 9284464
    Abstract: An inkjet ink including: water; a water-soluble organic solvent; a pigment; polycarbonate modified urethane resin particles; an ultraviolet absorber; and a light stabilizer.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: March 15, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hidefumi Nagashima, Naohiro Toda, Tomohiro Nakagawa, Juichi Furukawa, Ichiroh Fujii
  • Publication number: 20160068697
    Abstract: An ink for inkjet includes water; two or more hydrosoluble organic solvents; a pigment; and a resin particle more than the pigment by weight. A hydrosoluble organic solvent A having the smallest SP value and a hydrosoluble organic solvent B having the largest SP among the two or more hydrosoluble organic solvents satisfy the following relations (1) and (2): SP value of hydrosoluble organic solvent B?SP value of hydrosoluble organic solvent A?3??(1) boiling point of hydrosoluble organic solvent B>boiling point of hydrosoluble organic solvent A??(2).
    Type: Application
    Filed: August 10, 2015
    Publication date: March 10, 2016
    Inventors: Naohiro TODA, Tomohiro NAKAGAWA, Hidefumi NAGASHIMA, Juichi FURUKAWA, Masahiro KIDO, Hikaru KOBAYASHI
  • Publication number: 20160032122
    Abstract: An ink set for inkjet contains a white ink and one or more color inks other than the white ink, wherein the ink set satisfies the following I to III: I. each ink comprises water, a pigment, resin particulates, a water soluble organic solvent, and a silicone-based surfactant accounting for 1% by weight to 3% by weight of the ink, II. the pigment contained in each of the one or more color inks is a reformed pigment reformed by at least one of a geminal bisphosphonic acid group or a geminal bisphosphonic acid salt group, and III. the water soluble organic solvent of the white ink comprises glycol ether having a boiling point of from 200 degrees C. to 250 degrees C.
    Type: Application
    Filed: June 15, 2015
    Publication date: February 4, 2016
    Inventors: Naohiro Toda, Juichi Furukawa, Hidefumi Nagashima, Tomohiro Nakagawa, Hikaru Kobayashi
  • Patent number: 9243158
    Abstract: An aqueous ink for inkjet recording contains water, a hydrosoluble organic solvent, resin particles, and a pigment, wherein the hydrosoluble organic solvent contains at least three kinds of diol compounds accounting for 45% by weight or more in the hydrosoluble organic solvent, wherein three or more of the at least three kinds of diol compounds have boiling points 10° C. or greater apart from each other.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: January 26, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Naohiro Toda, Tomohiro Nakagawa, Hidefumi Nagashima, Ichiroh Fujii
  • Patent number: 9247604
    Abstract: A lighting device is provided with an illumination unit including two or less LED light sources. The illumination unit uses the two or less LED light sources to emit light of a short wavelength band and light of a long wavelength band. An output varying unit functions to vary an output of at least the long wavelength band light. When the output varying unit receives a varying signal, the output varying unit functions to decrease the output of at least the long wavelength band light.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: January 26, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Sayaka Nishi, Takashi Saito, Hiroki Noguchi, Naohiro Toda, Ayako Tsukitani, Kensuke Yamazoe, Toshihide Mori, Hiroshi Hamano, Kouichi Wada, Yoshinori Karasawa
  • Publication number: 20150368492
    Abstract: An ink contains a colorant, a water soluble organic solvent, a silicone-based surfactant, a compound represented by the following chemical formula 1, and water, wherein the water soluble organic solvent having a boiling point of 250° C. or higher accounts for 38% by weight or less in a total amount of the water soluble organic solvent, where R11 and R12 each, independently represent aliphatic hydrocarbon groups having 3 to 6 carbon atoms with forks and R13 and R14 each, independently represent alkyl groups having one to two carbon atoms, and n represents an integer of from 1 to 6.
    Type: Application
    Filed: June 5, 2015
    Publication date: December 24, 2015
    Inventors: Ichiroh FUJII, Naohiro TODA, Tomohiro NAKAGAWA, Hidefumi NAGASHIMA, Juichi FURUKAWA, Hikaru KOBAYASAHI
  • Publication number: 20150361282
    Abstract: An inkjet ink, containing: water; a water-soluble organic solvent; a pigment; and polycarbonate urethane resin particles, wherein the water-soluble organic solvent contains 50% by mass or more of a diol compound, and wherein the water-soluble organic solvent contains 50% by mass or more of a water-soluble organic solvent having a boiling point of 200° C. or less.
    Type: Application
    Filed: January 27, 2014
    Publication date: December 17, 2015
    Applicant: Ricoh Company, Ltd.
    Inventors: Tomohiro NAKAGAWA, Naohiro TODA, Hidefumi NAGASHIMA, Ichiroh FUJII, Juichi FURUKAWA
  • Publication number: 20150305126
    Abstract: An illumination system includes an illumination device, a control unit for controlling a turn-on operation of the illumination device, and a terminal through which manipulation information of the illumination device is inputted by a user. The control unit includes an information extracting unit for extracting illumination information, within a period between a first moment prior to a falling-asleep time of the user and a second moment after a wakeup time of the user, from manipulation information and operation information of the illumination device stored in a memory unit, and an information transceiver unit for transmitting and receiving the illumination information to and the terminal. The terminal includes a terminal transceiver unit for transmitting and receiving the illumination information to and from the control unit, a display unit for displaying the illumination information received through the terminal transceiver unit and an input unit by which the manipulation information is inputted.
    Type: Application
    Filed: April 15, 2015
    Publication date: October 22, 2015
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hikaru MAEDA, Takahiro KURIHARA, Tomoaki MANNAMI, Hiroaki KOBAYASHI, Naohiro TODA, Kazuhiro HATTA
  • Patent number: 9163160
    Abstract: Aqueous ink for inkjet contains water; a hydrosoluble organic solvent; a pigment; and a resin, wherein the hydrosoluble organic solvent contains 2,3-butane diol having meso-2,3-butane diol in an amount of 50% by weight or more in 2,3-butane diol and 2,3-butane diol accounts for 5% by weight to 40% by weight of the entire of the aqueous ink.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: October 20, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Naohiro Toda, Tomohiro Nakagawa, Hidefumi Nagashima, Juichi Furukawa, Ichiroh Fujii, Kiyofumi Nagai
  • Publication number: 20150274535
    Abstract: An object is to provide polycrystalline diamond applicable to diverse applications; and a water jet orifice, a stylus for gravure printing, a scriber, a diamond cutting tool, and a scribing wheel that include such polycrystalline diamond. This object is achieved by polycrystalline diamond obtained by converting and sintering non-diamond carbon under an ultrahigh pressure and at a high temperature without addition of a sintering aid or a catalyst, wherein sintered diamond grains constituting the polycrystalline diamond have an average grain diameter of more than 50 nm and less than 2500 nm and a purity of 99% or more, and the diamond has a D90 grain diameter of (average grain diameter+average grain diameter×0.9) or less.
    Type: Application
    Filed: June 12, 2015
    Publication date: October 1, 2015
    Inventors: Takeshi SATO, Katsuko YAMAMOTO, Naohiro TODA, Hitoshi SUMIYA, Yutaka KOBAYASHI