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Yui Tokuda, Mikio Sanada, Yoshihisa Takizawa, Masashi Ogasawara, Tomonari Watanabe, Takashi Imai, Yasuhiro Nito, Tetsu Iwata, Shinichi Hakamada, Sadayuki Sugama: Aqueous ink, ink-jet recording method, ink cartridge, recording unit, ink-jet recording apparatus and image forming method. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, October 2, 2007: US07276112 (51 worldwide citation)

Disclosed is an aqueous ink comprising at least water, a plurality of water-soluble organic solvents and a coloring material. The coloring material is a pigment, and, it contains a pigment particle having at least one ionic group bonded to a surface of the pigment particle directly or via another at ...


2
Mikio Sanada, Yoshihisa Takizawa, Katsuhiko Takahashi, Masashi Ogasawara, Yoichi Takada, Tomonari Watanabe, Yui Tokuda: Aqueous ink, ink jet recording method, ink cartridge, recording unit, and ink jet recording apparatus. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, February 28, 2006: US07005461 (49 worldwide citation)

The present invention relates to an aqueous ink, particularly an aqueous ink suitable for ink jet recording. The ink is an aqueous ink comprising a modified pigment having organic groups chemically attached to the surface of a particle of the pigment and an aqueous medium which is a dispersant of th ...


3
Yuko Takada, Mikio Sanada, Tomonari Watanabe: Aqueous ink, ink-jet recording method, recording unit, ink cartridge, ink set, and ink-jet recording apparatus. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, March 16, 2004: US06706105 (45 worldwide citation)

The present invention relates to aqueous ink that exhibits characteristics based on cationic self-dispersing carbon black, and that has superior ejection stability even after suspension of printing. The aqueous ink includes cationic self-dispersing pigment, in which at least one cationic group is bo ...


4
Shinsuke Fukuoka, Tomonari Watanabe, Tetsuro Dozono: Method for producing a crystallized aromatic polycarbonate, and a crystallized aromatic polycarbonate obtained thereby. Asahi Kasei Kogyo Kabushiki Kaisha, Berman Aisenberg & Platt, August 14, 1990: US04948871 (39 worldwide citation)

A crystallized aromatic polycarbonate having a weight average molecular weight of from 6,000 to 200,000 and having a terminal hydroxyl group content of not greater than 0.03% by weight based on the weight of the polycarbonate is effectively produced by first heating a mixture of a dihydroxydiaryl co ...


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Tomonari Watanabe, Mikio Sanada, Masashi Ogasawara, Yui Tokuda: Aqueous ink, and ink-jet recording method, ink-jet recording apparatus, and image forming method using the same. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, January 9, 2007: US07160376 (35 worldwide citation)

An aqueous ink comprising at least water, a water-soluble organic solvent and a colorant. The colorant comprises a pigment containing a pigment particle having at least one ionic group bonded to a surface of the pigment particle directly or via another atomic group. The organic solvent undergoes com ...


6
Koichi Osumi, Shinya Mishina, Tomonari Watanabe: Ink, ink set, ink cartridge, recording unit, color-image recording apparatus, image recording process, color-image forming process, and method for improving density of ink-jet recorded image. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, February 18, 2003: US06521034 (33 worldwide citation)

An ink is provided which suppresses the influence of the kinds of recording media on the image quality, is excellent in image quality, effectively inhibits the occurrence of bleed upon the formation of color images, is excellent in long-term shelf stability and stably forms high quality images. The ...


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Tomonari Watanabe, Shinya Mishina, Koichi Osumi: Ink, image recording process, ink cartridge, recording unit, ink set, crust-preventing method and image forming apparatus. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, April 15, 2003: US06547381 (32 worldwide citation)

An ink comprises a coloring material and an aqueous medium wherein the coloring material contains a self-dispersing type carbon black, in which self-dispersing carbon black a hydrophilic group combines with the surface of a carbon black directly or through another atomic group, and which ink contain ...


8
Tomonari Watanabe, Masashi Ogasawara, Yui Kitamura: Aqueous ink, ink jet recording method, ink cartridge, recording unit, ink jet recording apparatus and image forming method. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, September 11, 2007: US07267717 (24 worldwide citation)

An object of the present invention is to provide an aqueous ink which can form a more excellent image in bleeding resistance, character quality and print density than the image formed by using an aqueous ink containing a conventional self-dispersion pigment and a salt. The aqueous ink includes a sel ...


9
Mikio Sanada, Katsuhiko Takahashi, Masashi Ogasawara, Tomonari Watanabe, Yui Tokuda: Water-based ink, ink jet recording method, ink cartridge, recording unit, ink jet recording apparatus, and image forming method.. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, May 13, 2008: US07371274 (23 worldwide citation)

A water-based ink of the present invention comprises water, a plurality of different water-soluble organic solvents, and a water-insoluble coloring material, wherein the above water-soluble organic solvents consist of a good solvent to the above water-insoluble coloring material and a poor solvent t ...


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Mikio Sanada, Katsuhiko Takahashi, Masashi Ogasawara, Tomonari Watanabe, Yui Tokuda: Water-based ink, ink jet recording method, ink cartridge, recording unit, ink jet recording apparatus, and image forming method. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, August 30, 2011: US08007097 (19 worldwide citation)

A water-based ink of the present invention includes water, a plurality of different water-soluble organic solvents, and a water-insoluble coloring material, wherein the above water-soluble organic solvents consist of a good solvent to the above water-insoluble coloring material and a poor solvent to ...