Patents by Inventor Kazuma Goto
Kazuma Goto 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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Patent number: 7303618Abstract: An ink for ink-jet recording is provided in which copper phthalocyanine dyes and a thiazole-based compound are used. In this ink, the mildew resistant properties are not impaired, and the ink exhibits excellent ozone resistance. Furthermore, the formation of a precipitate is prevented in the ink although the thiazole-based compound is used. In the ink for ink-jet recording, as copper phthalocyanine dyes, two types of dyes are used together with a thiazole-based compound. Furthermore, about 1 mol % to about 20 mol % of the total counter ions in the two types of copper phthalocyanine dyes are ammonium ions or organic ammonium ions.Type: GrantFiled: February 15, 2007Date of Patent: December 4, 2007Assignee: Brother Kogyo Kabushiki KaishaInventors: Yasuhiro Taga, Tomoyo Hamajima, Masaya Fujioka, Kazuma Goto
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Patent number: 7303617Abstract: An ink for ink-jet recording is provided in which C. I. Direct Blue 199 and a thiazole-based compound are used. In this ink, about 1 mol % to about 20 mol % of the total counter ions in C. I. Direct Blue 199 are ammonium ions or organic ammonium ions.Type: GrantFiled: February 15, 2007Date of Patent: December 4, 2007Assignee: Brother Kogyo Kabushiki KaishaInventors: Yasuhiro Taga, Tomoyo Hamajima, Masaya Fujioka, Kazuma Goto
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Patent number: 7297198Abstract: An ink for ink-jet recording is provided in which a copper phthalocyanine dye is used and a thiazole-based compound is also used. In this ink, the mildew resistant properties are not impaired. Furthermore, the ink exhibits excellent ozone resistance, and the formation of a precipitate is prevented in the ink although the thiazole-based compound is used. In the ink for ink-jet recording containing the copper phthalocyanine dye and the thiazole-based compound, the used copper phthalocyanine dye has a specific structure, and about 1 mol % to about 20 mol % of the total counter ions of the dye are ammonium ions or organic ammonium ions.Type: GrantFiled: February 15, 2007Date of Patent: November 20, 2007Assignee: Brother Kogyo Kabushiki KaishaInventors: Yasuhiro Taga, Tomoyo Hamajima, Masaya Fujioka, Kazuma Goto
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Patent number: 7288141Abstract: In a water base ink set for ink-jet recording including a pigment-based black ink and a dye-based yellow ink, a first water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 95° to 105° is used, as the dye used in the yellow ink, together with a second water-soluble dye in which a number of counter ion or ions per one molecule is not more than 3 and a hue angle h* is 75° to 85°; or 30° to 70°; or 0° to 30° or 350° to 360°. When the ink set is applied to a general ink-jet printer with a simple maintenance system, the coagulation of black pigment in the printer and the blurring or bleeding on the printing paper are prevented, thereby realizing a satisfactory and complex coloring of the dye-based yellow ink.Type: GrantFiled: September 2, 2005Date of Patent: October 30, 2007Assignee: Brother Kogyo Kabushiki KaishaInventors: Junichiro Sugimoto, Masaya Fujioka, Kazuma Goto, Narumi Koga, Shunichi Higashiyama
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Patent number: 7281789Abstract: In a water base ink set for ink-jet recording, a pigment ink has a total ion concentration of lithium ion, potassium ion, and sodium ion of not less than 60 ppm and a total ion concentration of divalent or multivalent metal ion or ions of not more than 10 ppm, and a dye ink has a total ion concentration of lithium ion, potassium ion, and sodium ion of not more than 1,800 ppm and a total ion concentration of divalent or multivalent metal ion or ions of not more than 10 ppm, wherein the total ion concentration of lithium ion, potassium ion, and sodium ion of the dye ink is 3 to 25 times that of the pigment ink. Accordingly, the water base ink set in which the pigment ink and the dye ink can be reliably used in combination without complicating a maintenance system is provided.Type: GrantFiled: May 19, 2004Date of Patent: October 16, 2007Assignee: Brother Kogyo Kabushiki KaishaInventors: Kazuma Goto, Hideo Ohira, Masahito Kato, Masaya Fujioka, Shunichi Higashiyama
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Publication number: 20070186809Abstract: An ink for ink-jet recording is provided in which C. I. Direct Blue 199 and a thiazole-based compound are used. In this ink, about 1 mol % to about 20 mol % of the total counter ions in C. I. Direct Blue 199 are ammonium ions or organic ammonium ions.Type: ApplicationFiled: February 15, 2007Publication date: August 16, 2007Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yasuhiro TAGA, Tomoyo HAMAJIMA, Masaya FUJIOKA, Kazuma GOTO
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Publication number: 20070186811Abstract: An ink for ink-jet recording is provided in which copper phthalocyanine dyes and a thiazole-based compound are used. In this ink, the mildew resistant properties are not impaired, and the ink exhibits excellent ozone resistance. Furthermore, the formation of a precipitate is prevented in the ink although the thiazole-based compound is used. In the ink for ink-jet recording, as copper phthalocyanine dyes, two types of dyes are used together with a thiazole-based compound. Furthermore, about 1 mol % to about 20 mol % of the total counter ions in the two types of copper phthalocyanine dyes are ammonium ions or organic ammonium ions.Type: ApplicationFiled: February 15, 2007Publication date: August 16, 2007Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yasuhiro TAGA, Tomoyo HAMAJIMA, Masaya FUJIOKA, Kazuma GOTO
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Publication number: 20070186808Abstract: A cyan ink for ink-jet recording contains a coloring agent, water and a water soluble organic solvent. Different types of dyes are employed as the coloring agent. In particular, a dye represented by the general formula (1) is used together with at least one dye selected from the group consisting of a dye represented by the general formula (2), a dye represented by the general formula (3) and C. I. Direct Blue 86. In the formulas, Pc(Cu) is a copper phthalocyanine nucleus.Type: ApplicationFiled: February 12, 2007Publication date: August 16, 2007Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Tomoyo HAMAJIMA, Shunichi HIGASHIYAMA, Kazuma GOTO, Narumi KOGA, Yasuhiro TAGA
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Publication number: 20070186810Abstract: An ink for ink-jet recording is provided in which a copper phthalocyanine dye is used and a thiazole-based compound is also used. In this ink, the mildew resistant properties are not impaired. Furthermore, the ink exhibits excellent ozone resistance, and the formation of a precipitate is prevented in the ink although the thiazole-based compound is used. In the ink for ink-jet recording containing the copper phthalocyanine dye and the thiazole-based compound, the used copper phthalocyanine dye has a specific structure, and about 1 mol % to about 20 mol % of the total counter ions of the dye are ammonium ions or organic ammonium ions.Type: ApplicationFiled: February 15, 2007Publication date: August 16, 2007Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yasuhiro Taga, Tomoyo Hamajima, Masaya Fujioka, Kazuma Goto
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Publication number: 20070186812Abstract: According embodiments of the present disclosure, a water-based ink set for ink-jet recording is provided. The ink set may contain a black ink, a cyan ink, a magenta ink and a yellow ink. Each ink may contain a polyoxyethylene alkyl ether sulfonate.Type: ApplicationFiled: February 15, 2007Publication date: August 16, 2007Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Narumi Koga, Masaya Fujioka, Kazuma Goto, Shunichi Higashiyama
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Publication number: 20070186806Abstract: An ink set for ink-jet recording is formed from a yellow ink in which C. I. Direct Yellow 132 and C. I. Direct Yellow 86 are employed, a magenta ink in which a specific pyrazolylazopyridine-based (or pyrazolylazopyrazine-based) dye and another specific dye are employed, and a cyan ink in which two specific types of copper phthalocyanine-based dyes are employed.Type: ApplicationFiled: February 12, 2007Publication date: August 16, 2007Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuma GOTO, Narumi KOGA, Satoshi Okuda, Tomoyo Hamajima, Yasuhiro TAGA, Shunichi HIGASHIYAMA
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Publication number: 20070191507Abstract: An ink for ink-jet recording that is used in an ink-jet recording apparatus. The ink-jet recording apparatus includes an ink-jet head provided with an ink flow passage formed of nickel-containing metal. The ink contains water, a coloring agent, and a polymer. The polymer contains at least one of —COOM and —SO3M, where M denotes at least one of an alkali metal ion and an ammonium ion.Type: ApplicationFiled: February 8, 2007Publication date: August 16, 2007Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Junichiro SUGIMOTO, Masaya FUJIOKA, Kazuma GOTO
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Publication number: 20070186807Abstract: A magenta ink for ink-jet recording contains a coloring agent, water and a water soluble organic solvent. Different types of dyes are employed as the coloring agent. In particular, a dye (1) represented by the general formula (1) is used together with at least one dye selected from the group consisting of a dye (2) represented by the general formula (2) in a free acid form, C. I. Acid Red 289 and C. I. Acid Red 52.Type: ApplicationFiled: February 12, 2007Publication date: August 16, 2007Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuma GOTO, Shunichi HIGASHIYAMA, Tomoyo HAMAJIMA, Narumi KOGA, Satoshi OKUDA
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Publication number: 20070176969Abstract: In one embodiment, the disclosure relates to an ink-jet head including an ink chamber, a pressure chamber in communication with the ink chamber, a nozzle for ejecting an ink in communication with the pressure chamber, a piezoelectric actuator for applying an ejection pressure to an ink in the pressure chamber, and an ink passage extending from a boundary of the ink chamber to a tip of the nozzle. The tip of the nozzle has an aperture diameter of from about 15 to about 25 ?m, and the ink passage is configured such that when an ink having a viscosity of from about 2.5 to about 3 mPa·s is passed therethrough, a passage resistance value of the ink passage is from about 50 to about 100 kPa·s/mm3. Another embodiment of the disclosure relates to an ink-jet recording device containing such an ink-jet head.Type: ApplicationFiled: January 26, 2007Publication date: August 2, 2007Inventors: Satoshi Okuda, Narumi Koga, Kazuma Goto, Atsushi Ito, Koichiro Hara, Masaharu Ito
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Patent number: 7247192Abstract: A water base ink for ink-jet recording is provided, which makes it possible to secure a high recording quality with a sharp image area edge by avoiding any blurring even when recording is performed on regular paper and which has satisfactory purge restoration performance. Therefore, no bubble remains in an ink flow passage, and no discharge failure is caused. Further, the discharge operation never becomes unstable. In the water base ink for ink-jet recording, the surface tension is not less than 40 mN/m, and the amount of dissolved oxygen is not more than 4 mg/L.Type: GrantFiled: August 21, 2003Date of Patent: July 24, 2007Assignee: Brother Kogyo Kabushiki KaishaInventors: Hideo Ohira, Hiromitsu Sago, Kazuma Goto, Narumi Koga, Masaya Fujioka, Shunichi Higashiyama
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Patent number: 7247197Abstract: A water base ink for ink-jet recording is provided, which is excellent in time-dependent stability of ink characteristics, which can be stably jetted over a long period of time, and which makes it possible to perform the high quality recording. The water base ink for ink-jet recording contains a self-dispersing type water-insoluble particulate coloring agent, a compound represented by the following formula (1), a surfactant having a nitrogen atom in a molecule, water, and a water-soluble organic solvent, wherein a surface tension is 30 to 50 mN/m, and a ratio of change of the surface tension after storage at 60° C. for 2 weeks is less than 5%: R1—O—(CH2CH2O)x—SO3Na??(1) wherein R1 represents an alkyl group and x is 20 to 30 in the formula (1).Type: GrantFiled: September 22, 2003Date of Patent: July 24, 2007Assignee: Brother Kogyo Kabushiki KaishaInventors: Kazuma Goto, Hideo Ohira, Yoshito Toyoda, Mayuko Okada, Masaya Fujioka, Shunichi Higashiyama
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Publication number: 20070153072Abstract: A water-based ink for ink-jet recording contains water, a water-soluble organic solvent, a coloring agent and a crown ether. Even when the water-based ink is employed in the ink passage of an ink-jet recording apparatus and comes into contact with rubber members employed in the ink passage, the occurrence of precipitation is prevented.Type: ApplicationFiled: December 1, 2006Publication date: July 5, 2007Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuma Goto, Noriaki Satoh, Junichiro Sugimoto
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Publication number: 20070137519Abstract: A preservative solution contains water, a water-soluble organic solvent and a crown ether. Even when the preservative solution is employed in the ink passage of an ink-jet recording apparatus and comes into contact with rubber members employed in the ink passage, the occurrence of precipitation is prevented.Type: ApplicationFiled: December 13, 2006Publication date: June 21, 2007Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Junichiro Sugimoto, Kazuma Goto, Noriaki Satoh
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Publication number: 20070081059Abstract: An ink-jet recording apparatus includes a rubber member in an ink flow passage. The rubber member is pretreated with an organic solvent having a high boiling point, a water-based liquid containing a coloring agent, or a mixture of the two. The pretreatment is effective for preventing additives in the rubber material from being eluted into a water-based liquid for ink-jet recording, which can lead to clogging of ink-jet nozzles and the like.Type: ApplicationFiled: October 3, 2006Publication date: April 12, 2007Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Akira Endo, Masashi Tsuda, Kazuma Goto
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Publication number: 20070064046Abstract: An ink-jet recording apparatus includes a rubber member in an ink flow passage. The rubber member is made of a rubber composition including a rubber base polymer selected from ethylene-propylene diene rubber polymer and isobutylene-isoprene rubber polymer, and at least one trapping agent selected from calcium carbonate, silicon dioxide, talc, and clay. The trapping agent is effective for absorb-trapping various types of additives that may be present in the rubber member. The additives in the rubber are thereby held in the rubber structure and prevented from being eluted into the water-based ink or the preservative solution, which can lead to clogging of ink nozzles and the like.Type: ApplicationFiled: September 14, 2006Publication date: March 22, 2007Applicant: Brother Kogyo Kabushiki KaishaInventors: Kazuma Goto, Noriaki Satoh