Patents by Inventor Kaoru Takahashi
Kaoru Takahashi 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).
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Publication number: 20140285567Abstract: There are provided a new compound which has the following general formula (1) and which is useful as a coloring material, an ink containing the compound, an ink cartridge containing the ink and an ink jet recording method including ejecting the ink from a recording head of an ink jet system to record an image on a recording medium,Type: ApplicationFiled: March 19, 2014Publication date: September 25, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Masahiro Suenaga, Kaoru Takahashi, Yasuaki Murai, Takeshi Miyazaki, Yutaka Tani, Masashi Hirose, Ryosuke Nagao, Yoshio Kinoshita, Yoshihide Aikawa
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Patent number: 8837059Abstract: According to an aspect of the invention, an image reading apparatus includes a substrate, light emitting elements, a catoptrics system, an imaging lens, a lens position fixing unit, and a reflective surface fixing unit. The plurality of light emitting elements is arranged on the substrate in a line and emits light to a surface of an object to be irradiated. The imaging element is disposed on the substrate and receives light reflected from the surface of the object. The first optical system guides the light emitted from the light emitting elements to the surface of the object. The second optical system guides the light reflected from the surface to the imaging element. The second optical system includes a catoptrics system including a first reflective surface and a second reflective surface so that light reflected from the first reflective surface is reflected to the substrate, and an imaging lens.Type: GrantFiled: January 24, 2012Date of Patent: September 16, 2014Assignee: Fuji Xerox Co., Ltd.Inventor: Kaoru Takahashi
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Publication number: 20140225048Abstract: It is aimed to provide a liquid composition having a high solubility in solvents, high brightness and chroma, and spectral reflection characteristics with a broad color range. It is a liquid composition characterized by having a medium and a compound represented by the following general formula (1). In the general formula (1), R1 and R2 each represent an alkyl group, and either one of these represents an alkyl group having 7 or more carbon atoms.Type: ApplicationFiled: July 24, 2012Publication date: August 14, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Satoshi Saito, Taichi Shintou, Takayuki Ujifusa, Yutaka Tani, Masao Nakano, Kaoru Takahashi, Takeshi Miyazaki, Masashi Hirose
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Publication number: 20140162182Abstract: An object of the present invention is to provide a magenta toner having high lightness and saturation and having spectral reflection properties having a wider color range. A magenta toner including magenta toner particles each including a binder resin and a colorant, wherein the colorant includes a compound represented by a formula (1): (wherein R1 and R2 represent an alkyl group or an alkoxyalkyl group, and at least one of R1 and R2 has not less than 7 carbon atoms.Type: ApplicationFiled: July 24, 2012Publication date: June 12, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Masao Nakano, Taichi Shintou, Yutaka Tani, Takayuki Ujifusa, Kaoru Takahashi, Satoshi Saito, Takeshi Miyazaki, Masashi Hirose
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Publication number: 20140113229Abstract: An object of the present invention is to provide a magenta toner having high dispersibility of a colorant and good spectral characteristics. A magenta toner includes a magenta toner particle including at least a binder resin, a compound represented by the formula (1), and a colorant, wherein the colorant includes a pigment having a quinacridone skeleton: (wherein R1 and R2 each independently represent a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group.Type: ApplicationFiled: July 24, 2012Publication date: April 24, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Yutaka Tani, Masao Nakano, Takayuki Ujifusa, Taichi Shintou, Kaoru Takahashi, Satoshi Saito, Takayuki Toyoda, Takeshi Miyazaki, Masashi Hirose
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Publication number: 20140113231Abstract: To provide a pigment dispersion excellent in dispersibility and spectral characteristics. The pigment dispersion at least includes: a dispersion medium; a compound represented by a general formula (1), the compound being dispersed in the dispersion medium; and a pigment having a quinacridone skeleton, the pigment being dispersed in the dispersion medium: in the general formula (1), R1 and R2 each independently represent a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group.Type: ApplicationFiled: July 24, 2012Publication date: April 24, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Taichi Shintou, Takayuki Ujifusa, Masao Nakano, Yutaka Tani, Kaoru Takahashi, Satoshi Saito, Takayuki Toyoda, Takeshi Miyazaki, Masashi Hirose
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Publication number: 20140080049Abstract: To provide a yellow toner having a colorant in a good dispersed state, obtained through excellent granulation performance and having stable developing performance, the yellow toner contains a binder resin, a wax and a colorant, and is characterized by containing as the colorant a compound represented by the following general formula (1) and a compound represented by the following general formula (2).Type: ApplicationFiled: June 21, 2012Publication date: March 20, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Takayuki Ujifusa, Taichi Shintou, Yutaka Tani, Masao Nakano, Kaoru Takahashi, Satoshi Saito, Takeshi Miyazaki, Masashi Hirose
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Publication number: 20140080063Abstract: The present invention provides a pigment dispersion excellent in dispersibility. Furthermore, the present invention provides a color filter yellow resist composition and an ink composition, which include the pigment dispersion. A pigment dispersion containing at least a compound represented by General formula (1) and a yellow pigment represented by General formula (2) in a dispersion medium and a method for manufacturing the same are provided. Furthermore, a color filter yellow resist composition and an ink composition are provided, wherein images can be displayed with high spectral characteristics and high display contrast because the brightness is high and the hue of yellow is excellent.Type: ApplicationFiled: April 23, 2012Publication date: March 20, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Taichi Shintou, Yutaka Tani, Masao Nakano, Takayuki Ujifusa, Kaoru Takahashi, Satoshi Saito, Takeshi Miyazaki, Masashi Hirose
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Publication number: 20140005417Abstract: The present invention provides a water-insoluble coloring compound that has high solubility in solvent, good color tone and saturation, spectral reflectance characteristics for a wide color gamut, and a high light resistance. The present invention provides an ink containing the water-insoluble coloring compound. Furthermore, the present invention provides a resist composition for color filter and a thermal transfer recording sheet each produced using the ink. The present invention provides a water-insoluble xanthene coloring compound having a specific structure.Type: ApplicationFiled: March 9, 2012Publication date: January 2, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Kaoru Takahashi, Taichi Shintou, Yutaka Tani, Masao Nakano, Takayuki Ujifusa, Satoshi Saito, Yasuaki Murai, Kei Inoue, Masashi Hirose, Takeshi Miyazaki
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Publication number: 20140004458Abstract: There is provided a magenta toner having spectral reflection characteristics, such as high color developability and transparency, and high lightfastness. The magenta toner contains at least a water-insoluble xanthene dye compound having a specific structure and a binder resin.Type: ApplicationFiled: March 9, 2012Publication date: January 2, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Yutaka Tani, Kaoru Takahashi, Masao Nakano, Takayuki Ujifusa, Taichi Shintou, Satoshi Saito, Yasuaki Murai, Kei Inoue, Takeshi Miyazaki, Masashi Hirose
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Patent number: 8603711Abstract: To obtain a pigment dispersion and a yellow toner having high coloring power and high dispersibility of a pigment in a dispersion medium, a pigment dispersion containing a compound represented by general formula (1) and a yellow pigment represented by general formula (2) are provided in a dispersion medium.Type: GrantFiled: March 21, 2012Date of Patent: December 10, 2013Assignee: Canon Kabushiki KaishaInventors: Yutaka Tani, Masao Nakano, Takayuki Ujifusa, Taichi Shintou, Kaoru Takahashi, Satoshi Saito, Tomoyuki Noda, Takeshi Miyazaki, Masashi Hirose
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Patent number: 8537434Abstract: An image reading device includes: a plurality of light sources that are arranged in a row and emit light; a light guide body that guides the light emitted from the plurality of light sources to a reading portion and transmits light reflected from the reading portion; a carriage having the plurality of light sources and the light guide body; and a reading unit that receives the light reflected from the reading portion and reads an image on the reading portion.Type: GrantFiled: March 18, 2010Date of Patent: September 17, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Kaoru Takahashi, Shusaku Yokota
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Patent number: 8488217Abstract: An image reading device including: plural point light sources, each point light source being disposed at a placement interval F in a first direction; a light guiding body having an exit surface, incident light from the plural light sources exiting from the exit surface to a surface to be read, and a width S of the exit surface, in a second direction intersecting with the first direction, being smaller than the placement interval F; a light diffusing portion which diffuses light exiting from the exit surface, at an angle that is greater in the first direction than in the second direction; and a reading portion which receives light reflected at the surface to be read, and reads an image at the surface to be read, is provided.Type: GrantFiled: March 22, 2010Date of Patent: July 16, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Kaoru Takahashi, Shusaku Yokota
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Patent number: 8477385Abstract: An image reading apparatus includes a casing, a light emitting section, a substrate, a support member, and a light guide. The light emitting section includes plural point light sources disposed in a row. The light emitting section is installed to a first face of the substrate. The support member is installed to the casing and supports a second face of the substrate at a projection portion where a position of the light emitting section is projected at the second face of the substrate. The light guide is installed to the casing adjacent to the light emitting section, and guides light from the light emitting section to a read-face.Type: GrantFiled: February 16, 2010Date of Patent: July 2, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Kaoru Takahashi, Hironori Shimada, Minoru Aoki, Masayuki Saito
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Patent number: 8460639Abstract: Provided are a novel probe for a hair cell for clearly identifying various conditions of a hair cell, and a labelling method for a hair cell using the probe for a hair cell, more particularly, a probe for a hair cell containing, as an active agent, a staining compound represented by the general formula (I)Type: GrantFiled: December 22, 2009Date of Patent: June 11, 2013Assignee: Canon Kabushiki KaishaInventors: Tsuyoshi Nomoto, Takeshi Miyazaki, Kohei Watanabe, Taichi Shintou, Kaoru Takahashi, Toshio Tanaka, Yuhei Nishimura, Yasuhito Shimada, Norihiro Nishimura
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Publication number: 20130070349Abstract: According to an aspect of the invention, an image reading apparatus includes a substrate, light emitting elements, a catoptrics system, an imaging lens, a lens position fixing unit, and a reflective surface fixing unit. The plurality of light emitting elements is arranged on the substrate in a line and emits light to a surface of an object to be irradiated. The imaging element is disposed on the substrate and receives light reflected from the surface of the object. The first optical system guides the light emitted from the light emitting elements to the surface of the object. The second optical system guides the light reflected from the surface to the imaging element. The second optical system includes a catoptrics system including a first reflective surface and a second reflective surface so that light reflected from the first reflective surface is reflected to the substrate, and an imaging lens.Type: ApplicationFiled: January 24, 2012Publication date: March 21, 2013Applicant: FUJI XEROX CO., LTD.Inventor: Kaoru TAKAHASHI
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Patent number: 8395829Abstract: An aspect of the present invention provides an illuminating device including point-light-sources arranged in a line, that emit light; an optical guide member formed by injection molding and one end face of the optical guide member facing the point-light-sources, that guides light emitted from the point-light-sources to a surface to be illuminated such that the light emitted from the point-light-sources is incident on the one end face and the light incident on the one end face exits from the other end face; and first pin marks formed by projection pins used when removing the optical guide member when injection molding, the first pin marks being formed on one of faces of the optical guide member facing in a thickness direction of the optical guide member at the one end face side, and being formed in positions offset from the point-light-sources in a direction along which the point-light-sources are arranged.Type: GrantFiled: February 5, 2010Date of Patent: March 12, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Kaoru Takahashi, Hironori Shimada, Shusaku Yokota
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Patent number: 8343269Abstract: The present invention is a colorant compound represented by the following general formula (1): wherein at least one of R2, R4, R7 and R9 is an acylamino group represented by the following general formula (2): wherein R11 denotes one of an alkyl group, a cycloalkyl group, an aryl group, an arylalkyl group, an alkenyl group and a heterocyclic group; and ‘*’ denotes a bonding site with an aromatic ring of the general formula (1).Type: GrantFiled: September 3, 2010Date of Patent: January 1, 2013Assignee: Canon Kabushiki KaishaInventors: Kaoru Takahashi, Yasuaki Murai, Kei Inoue, Masashi Hirose, Takeshi Miyazaki, Ryosuke Nagao, Otome Mori, Minako Kawabe
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Publication number: 20120251939Abstract: To obtain a pigment dispersion and a yellow toner having high coloring power and high dispersibility of a pigment in a dispersion medium, a pigment dispersion containing a compound represented by general formula (1) and a yellow pigment represented by general formula (2) are provided in a dispersion medium.Type: ApplicationFiled: March 21, 2012Publication date: October 4, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Yutaka Tani, Masao Nakano, Takayuki Ujifusa, Taichi Shintou, Kaoru Takahashi, Satoshi Saito, Tomoyuki Noda, Takeshi Miyazaki, Masashi Hirose
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Publication number: 20110096374Abstract: An image reading apparatus includes light emitting elements, a circuit board, a light guide member, a support member and a heat radiation member and a reading portion. The light emitting elements emit light for illuminating an original. The light emitting elements are installed on the circuit board. The light of the light emitting elements enters into the light guide member. The support member supports the circuit board and the light guide member. The heat radiation member has a heat transmission portion to which heat generated in the light emitting elements is transmitted, and a heat radiation portion that radiates the heat conducted to the heat transmission portion. The reading portion reads an image of the original with reflection light generated in such a way that the light exiting from the light guide member is reflected from the original.Type: ApplicationFiled: July 16, 2010Publication date: April 28, 2011Applicant: FUJI XEROX CO., LTD.Inventors: Kaoru TAKAHASHI, JiYoung Jeong