Patents by Inventor Tomoko Nakagawa
Tomoko Nakagawa 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: 20240110071Abstract: Provided is a UV-curable water-based ink excellent in coating film performance, especially alcohol resistance and scratch resistance. The UV-curable water-based ink includes at least a UV-curable oligomer, a colorant, and a mercapto compound, in which the UV-curable oligomer has a structural unit derived from a compound represented by the following chemical formula.Type: ApplicationFiled: October 23, 2023Publication date: April 4, 2024Applicant: Mitsubishi Chemical CorporationInventors: Tamae Karasawa, Keisuke Inaba, Tomoko Nakagawa, Shuhei Sakatani, Kengo Kasai
-
Publication number: 20240052184Abstract: Provided is a UV-curable water-based ink including at least a UV-curable oligomer, a colorant, and a water-soluble polyfunctional (meth)acrylamide compound, in which the UV-curable oligomer has a structural unit derived from a water-soluble compound and a structural unit derived from a compound containing two or more polymerizable unsaturated bonds.Type: ApplicationFiled: October 23, 2023Publication date: February 15, 2024Applicant: Mitsubishi Chemical CorporationInventors: Tamae Karasawa, Keisuke Inaba, Tomoko Nakagawa, Shuhei Sakatani, Kengo Kasai
-
Publication number: 20220282106Abstract: Provided is an ink for inkjet printing having high environmental safety, well satisfying characteristics required for a printing ink for a commercial inkjet printer such as high image quality performance, high coating performance, high-speed printability, and substrate versatility in a well-balanced manner, and having good pigment dispersion stability. The ultraviolet-curable water-based inkjet-printing ink contains at least an ultraviolet curable oligomer and a colorant. The ultraviolet-curable oligomer includes a structural unit derived from a polyisocyanate compound (A), a structural unit derived from a compound (B?) shown below, and a structural unit derived from a compound (C?) shown below. Compound (B?): a compound having two or more polymerizable unsaturated bonds and capable of bonding with the polyisocyanate compound (A) Compound (C?): a water-soluble compound capable of bonding with the polyisocyanate compound (A).Type: ApplicationFiled: May 27, 2022Publication date: September 8, 2022Applicant: Mitsubishi Chemical CorporationInventors: Keisuke Inaba, Tomoko Nakagawa, Tamae Karasawa, Aiko Ito, Tetsuharu Yuge, Atsushi Tsujimoto, Shuhei Sakatani
-
Patent number: 11194261Abstract: The present invention relates to an electrostatic charge image developing toner having a ratio of TP2/TP1 of 1.47 to 2.35, wherein a first measurement value of a tan ? maximal value measured in 40° C. to 80° C. by a rheometer is set as the TP1, and a second measurement value of a tan ? maximal value measured in 40° C. to 80° C. by the rheometer is set as the TP2.Type: GrantFiled: December 16, 2019Date of Patent: December 7, 2021Assignee: Mitsubishi Chemical CorporationInventors: Masaya Ota, Tomoko Nakagawa, Yuki Narukawa, Masaaki Okamoto
-
Patent number: 10725392Abstract: The present invention relates to an electrostatic charge image developing toner, wherein when a tan ? measurement is performed twice by a rheometer, in the first measurement, a tan ? value measured at 130° C. is set as TP1 (130° C.), and a tan ? value measured at 140° C. is set as TP1 (140° C.), in the second measurement, a tan ? value measured at 140° C. is set as TP2 (140° C.), TP2 (140° C.)/TP1(140° C.) is equal to or smaller than 0.95, and TP1 (130° C.) is equal to or greater than 2.5.Type: GrantFiled: July 19, 2019Date of Patent: July 28, 2020Assignee: Mitsubishi Chemical CorporationInventors: Kumiko Kameya, Tomoko Nakagawa, Yuki Narukawa, Masaya Ota, Tetsuharu Yuge
-
Publication number: 20200117108Abstract: The present invention relates to an electrostatic charge image developing toner having a ratio of TP2/TP1 of 1.47 to 2.35, wherein a first measurement value of a tan ? maximal value measured in 40° C. to 80° C. by a rheometer is set as the TP1, and a second measurement value of a tan ? maximal value measured in 40° C. to 80° C. by the rheometer is set as the TP2.Type: ApplicationFiled: December 16, 2019Publication date: April 16, 2020Applicant: Mitsubishi Chemical CorporationInventors: Masaya OTA, Tomoko NAKAGAWA, Yuki NARUKAWA, Masaaki OKAMOTO
-
Patent number: 10551755Abstract: The present invention relates to an electrostatic charge image developing toner having a ratio of TP2/TP1 of 1.47 to 2.35, wherein a first measurement value of a tan ? maximal value measured in 40° C. to 80° C. by a rheometer is set as the TP1, and a second measurement value of a tan ? maximal value measured in 40° C. to 80° C. by the rheometer is set as the TP2.Type: GrantFiled: June 26, 2018Date of Patent: February 4, 2020Assignee: Mitsubishi Chemical CorporationInventors: Masaya Ota, Tomoko Nakagawa, Yuki Narukawa, Masaaki Okamoto
-
Publication number: 20190339630Abstract: The present invention relates to an electrostatic charge image developing toner, wherein when a tan ? measurement is performed twice by a rheometer, in the first measurement, a tan ? value measured at 130° C. is set as TP1 (130° C.), and a tan ? value measured at 140° C. is set as TP1 (140° C.), in the second measurement, a tan ? value measured at 140° C. is set as TP2 (140° C.), TP2 (140° C.)/TP1(140° C.) is equal to or smaller than 0.95, and TP1 (130° C.) is equal to or greater than 2.5.Type: ApplicationFiled: July 19, 2019Publication date: November 7, 2019Applicant: Mitsubishi Chemical CorporationInventors: Kumiko KAMEYA, Tomoko Nakagawa, Yuki Narukawa, Masaya Ota, Tetsuharu Yuge
-
Publication number: 20180299800Abstract: The present invention relates to an electrostatic charge image developing toner having a ratio of TP2/TP1 of 1.47 to 2.35, wherein a first measurement value of a tan ? maximal value measured in 40° C. to 80° C. by a rheometer is set as the TP1, and a second measurement value of a tan ? maximal value measured in 40° C. to 80° C. by the rheometer is set as the TP2.Type: ApplicationFiled: June 26, 2018Publication date: October 18, 2018Applicant: Mitsubishi Chemical CorporationInventors: Masaya OTA, Tomoko NAKAGAWA, Yuki NARUKAWA, Masaaki OKAMOTO
-
Patent number: 9612544Abstract: The object of the present invention is to provide an electrostatic image developing toner excellent in providing high image quality and excellent in low-temperature fixation performance and environmental stability. The present invention is an electrostatic image developing toner having a toner base particle containing at least a binder resin and a colorant, and an external additive, wherein the toner base particle has a core-shell structure having a core particle and a shell layer, the toner base particle has a resin coating layer of a water-soluble resin on the surface of the core particle, and has the shell layer on the resin coating layer.Type: GrantFiled: February 26, 2016Date of Patent: April 4, 2017Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Tomoko Nakagawa, Akihiko Yanagibori
-
Publication number: 20160179025Abstract: The object of the present invention is to provide an electrostatic image developing toner excellent in providing high image quality and excellent in low-temperature fixation performance and environmental stability. The present invention is an electrostatic image developing toner having a toner base particle containing at least a binder resin and a colorant, and an external additive, wherein the toner base particle has a core-shell structure having a core particle and a shell layer, the toner base particle has a resin coating layer of a water-soluble resin on the surface of the core particle, and has the shell layer on the resin coating layer.Type: ApplicationFiled: February 26, 2016Publication date: June 23, 2016Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Tomoko NAKAGAWA, Akihiko YANAGIBORI
-
Patent number: 8273509Abstract: To realize an electrophotographic photoreceptor excellent in abrasion resistance, the photosensitive layer of the photoreceptor comprises a polyester resin containing a repeating structural unit represented by the formula (1) and a hydrazone compound. (In the formula (1), Ar1 to Ar4 each represents, independently of each other, an arylene group which may have a substituent. X1 represents a bivalent group (including a single bond) and X2 represents a bivalent group (including a single bond) with 3 or less atoms.Type: GrantFiled: January 9, 2007Date of Patent: September 25, 2012Assignee: Mitsubishi Chemical CorporationInventors: Yuka Nagao, Tadashi Mizushima, Masami Tsurumori, Tomoko Nakagawa, Hiroaki Takamura, Shunichirou Kurihara, Tooru Uenaka, Masayuki Hiroi
-
Publication number: 20090232551Abstract: To realize an electrophotographic photoreceptor excellent in abrasion resistance, the photosensitive layer of the photoreceptor comprises a polyester resin containing a repeating structural unit represented by the formula (1) and a hydrazone compound. (In the formula (1), Ar1 to Ar4 each represents, independently of each other, an arylene group which may have a substituent. X1 represents a bivalent group (including a single bond) and X2 represents a bivalent group (including a single bond) with 3 or less atoms.Type: ApplicationFiled: January 9, 2007Publication date: September 17, 2009Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Yuka Nagao, Tadashi Mizushima, Masami Tsurumori, Tomoko Nakagawa, Hiroaki Takamura, Shunichirou Kurihara, Tooru Uenaka, Masayuki Hiroi
-
Publication number: 20080248011Abstract: The present invention provides HIDE1 as novel monocyte markers. Since HIDE1 are membrane proteins, monocytes can be specifically detected by using antibodies that bind to HIDE1. Further, HIDE1-positive monocytes can also be collected from peripheral blood or the like using a cell sorter, magnet, or such. Monocytes that can be prepared based on the present invention are useful in cell immunotherapy.Type: ApplicationFiled: January 25, 2005Publication date: October 9, 2008Applicant: MEDICAL AND BIOLOGICAL LABORATORIES CO., LTD.Inventors: Tomoko Nakagawa, Shunsuke Kurei, Shingo Toji, Ayako Okabe, Motoki Kuhara, Yoshiro Kishi, Ichiro Yahara
-
Patent number: 6785055Abstract: A zoom lens system has, in order from an enlargement side, a first lens unit having negative optical power, a second lens unit having positive optical power, a third lens unit having positive optical power, a fourth lens unit having negative optical power, including an aperture stop, a fifth lens unit having positive or negative optical power, and a sixth lens unit having positive optical power. Zooming is achieved by varying the first to fifth variable distances between the lens units. The third and fifth lens units move from the enlargement side to the reduction side during zooming from the telephoto end to the wide-angle end. The zoom lens system is substantially telecentric toward the reduction side.Type: GrantFiled: May 16, 2002Date of Patent: August 31, 2004Assignee: Minolta Co. Ltd.Inventors: Jun Nishikawa, Tomoko Nakagawa
-
Publication number: 20030103268Abstract: A zoom lens system has, from an enlargement side, a first lens unit having a negative optical power, a second lens unit having a positive optical power and disposed on the image side of the first lens unit with a first variable distance secured in between, a third lens unit having a positive optical power and disposed on the image side of the second lens unit with a second variable distance secured in between, a fourth lens unit having a negative optical power, disposed on the image side of the third lens unit with a third variable distance secured in between, and including an aperture stop, a fifth lens unit having a positive or negative optical power and disposed on the image side of the fourth lens unit with a fourth variable distance secured in between, and a sixth lens unit having a positive optical power and disposed on the image side of the fifth lens unit with a fifth variable distance secured in between. Zooming is achieved by varying the first to fifth variable distances.Type: ApplicationFiled: May 16, 2002Publication date: June 5, 2003Inventors: Jun Nishikawa, Tomoko Nakagawa
-
Patent number: 6558007Abstract: An illumination optical system has a light source, an integrator for making the intensity distribution of the light from the light source even, and a relay optical system for imaging the light from the integrator on a plane conjugate with the exit surface of the integrator. The relay optical system includes a rear lens unit of which the refractive power is asymmetrical in one direction so that the plane on which the light is imaged is inclined relative to the optical axis of the relay optical system. This makes it possible to direct light to an inclined surface with an even intensity distribution and with minimum loss of the illumination light.Type: GrantFiled: January 28, 2002Date of Patent: May 6, 2003Assignee: Minolta Co., Ltd.Inventors: Tomoko Nakagawa, Shigeru Sawamura, Katsuhiro Takamoto
-
Publication number: 20020149939Abstract: An illumination optical system has a light source, an integrator for making the intensity distribution of the light from the light source even, and a relay optical system for imaging the light from the integrator on a plane conjugate with the exit surface of the integrator. The relay optical system includes a rear lens unit of which the refractive power is asymmetrical in one direction so that the plane on which the light is imaged is inclined relative to the optical axis of the relay optical system. This makes it possible to direct light to an inclined surface with an even intensity distribution and with minimum loss of the illumination light.Type: ApplicationFiled: January 28, 2002Publication date: October 17, 2002Applicant: Minolta Co., LtdInventors: Tomoko Nakagawa, Shigeru Sawamura, Katsuhiro Takamoto
-
Patent number: D652842Type: GrantFiled: February 16, 2010Date of Patent: January 24, 2012Assignee: Panasonic CorporationInventors: Tomoko Obama, Takanori Ogawa, Tomoko Nakagawa