Ricoh Company, Ltd.

Hodogaya Chemical Co., Ltd.

Richoh Company, Ltd.

Tamotsu Aruga

Masaomi Sasaki

Satoshi Yamamoto

Tomoyuki Shimada

Hiroshi Adachi

Kakuji Murakami

Kiyofumi Nagai

Chiaki Tanaka

Mitsutoshi Anzai

Masayuki Koyano

Masafumi Ohta

Masaru Shimada

Mitsuru Hashimoto

Takao Hiraoka

Soh Noguchi

Shinji Matsumoto

Daisuke Goto

Masafumi Torii

Takashi Okada

Hiroshi Goto

Michihiko Namba

Akihiko Gotoh

Toshiya Sagisaka

Naoya Morohoshi

Kazukiyo Nagai

Akihiko Matsuyama

Hiroshi Ikuno

Tamotsu Horiuchi

Toshiyuki Kabata

Tatsuya Niimi

Hiroshi Gotou

Kazuhiko Umemura

Shigeyuki Harada

Hiroyuki Fushimi

Yoshihiro Moriya

Noriyasu Takeuchi

Hiroyuki Uemura

Eiji Noda

Toshiyuki Kawanishi

Tsutomu Maekawa

Okitoshi Kimura

Eiichi Akutsu

Tomoko Hasegawa

Takuji Kato

Shinya Seno

Akihiro Imai

Hisashi Habashi

Tadashi Fujii

Atsushi Takesue

Mariko Kojima

Katsuhiro Morooka

Tohru Ohshima

Hidetoshi Fujii

Yoshiaki Kawasaki

Takeshi Orito

Masataka Mohri

Yasuo Murakami

Shin-ya Seno

Toshiroh Tokuno

Katsuichi Ohta

Masanori Kusunoki

Kunihiro Yamanaka

Masaki Okubo

Takashi Rokutanzono

Yuka Miyamoto

Hirofumi Yamanami

Masafumi Ota

Tomoyuki Shimida

Norlyasu Takeuchi

Ink includes water, a pigment, an organic solvent including glycol ether, and a surfactant including a silicone-based surfactant and a salt of sulfo succinic acid dialkyl ester. As measured by maximum bubble pressure technique at 23 degrees C., the dynamic surface tension of the ink at 15 msec is not greater than 31 mN/m and the difference between the dynamic surface tension of the ink at 15 msec and the dynamic surface tension of the ink at 1,500 msec is not greater than 4.0 mN/m.

Ink, ink container, and inkjet recording device

A polymer containing a repeating unit expressed by General Formula (I): 

Arylamine polymer, method for producing the same, ink composition, film, electronic device, organic thin-film transistor, and display device

A copolymer contains repeating units represented by the following chemical formulae 1 and 2:  In the chemical formulae 1 and 2, R represents a hydrogen atom or a cation; X represents an alkylene group having 2 to 18 carbon atoms; Y represents a single bond, an oxycarbonyl group [(X)&#x2014;O&#x2014;CO&#x2014;(Z)], a carbonyloxy group [(X)&#x2014;CO&#x2014;O&#x2014;(Z)], an ether group (&#x2014;O&#x2014;), or an imido group [(X)&#x2014;N&#x2014;CO&#x2014;(&#x2014;CO&#x2014;)(Z)]; and Z represents a biphenyl group or a naphthyl group).

Copolymer, aqueous ink, and ink cartridge

To provide a method of producing a film, comprising: ejecting a liquid B over a liquid surface of an active energy ray-curable liquid as a liquid A by an inkjet process, according to a predetermined periodic signal; and subsequently applying an active energy ray to the liquid A and the liquid B so as to perform curing and obtain a film which comprises a pattern according to any one of (1) to (4) below, (1) a smooth pattern having a periodic amplitude based upon a trigonometric function, (2) a pattern having a periodic depression, (3) a pattern in the form of a periodic flat surface, and (4) a pattern having a periodic semicylindrical shape.

Method of producing film by inkjet process, and film

An image recording apparatus is provided containing:

Inkjet image forming apparatus and inkjet image forming method

An ink jet recording method including: applying at least two energy beam curable liquids different from each other in surface tension on a recording medium to form an energy beam curable liquid layer having a distribution pattern of different surface tensions; ejecting an energy beam curable ink on the energy beam curable liquid layer formed on the recording medium; and irradiating the energy beam curable liquid layer and the energy beam curable ink with energy beams to cure the energy beam curable liquid layer and the energy beam curable ink to form an image.

Ink jet recording method, ink jet recording apparatus, and ink jet recorded matter

An ultraviolet crosslinking ink including a radically polymerizable and anionically polymerizable monomer; a photoradical generator; and a photo-base generator. An inkjet recording method including ejecting an ultraviolet crosslinking ink including a radically polymerizable and anionically polymerizable monomer; a photoradical generator; a photo-base generator; and a colorant, toward a surface of a recording material to form an ink image, and irradiating the ink image with ultraviolet light using a light emitting diode.

Ultraviolet crosslinking ink and inkjet recording method

An ultraviolet crosslinking inkjet ink including a radically polymerizable monomer including a methacrylate and no acrylate; and a photoradical generator. An ink cartridge including the ultraviolet crosslinking inkjet ink and a container containing the ultraviolet crosslinking inkjet ink therein. An image forming method including ejecting droplets of the ultraviolet crosslinking inkjet ink toward a recording material to form an image on the recording material; and irradiating the image with ultraviolet light to crosslink the image. An image forming apparatus including a recording device to eject droplets of the ultraviolet crosslinking inkjet ink toward a recording material to form an image on the recording material; and an ultraviolet irradiator to irradiate the image with ultraviolet light to crosslink the image.

Ultraviolet crosslinking inkjet ink, ink cartridge containing same, and image forming method and apparatus using same

A method of ink jet recording including forming an uncured first ink layer of a first ultraviolet curable ink A on a recording medium, forming an uncured second ink layer having a recording pattern inside the uncured first ink layer of the ink A by discharging a second ultraviolet curable ink B from an ink jet head, and curing the uncured first ink layer by irradiating the uncured first ink layer with ultraviolet light after forming the uncured second ink layer, wherein the ink A contains a photoradical generator and the ink B contains a photobase generator and a coloring agent.

Ink jet recording method

There is provided an ink for recording, which contains: a coloring agent; a water-dispersible resin; a wetting agent; a surfactant; and water, wherein a total solid content of the coloring agent and the water-dispersible resin is 10% by mass to 30% with respect to a total mass of the ink, a ratio B/C is 0.1 to 1.6 where B is a solid content of the coloring agent in the ink, and C is a solid content of the water-dispersible resin in the ink, a viscosity of the ink is 5 mPa&#xb7;s to 20 mPa&#xb7;s at 25&#xb0; C., and a surface tension of the ink is 35 mN/m or less.

Ink for recording, and ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method using the same

A [1]benzothieno[3,2-b][1]benzothiophene compound expressed by General Formula (I): General Formula (I) where X and Y are each independently a hydrogen atom; a halogen atom; or a functional group having a straight or branched aliphatic alkyl group optionally having a halogen atom, a functional group having an alicyclic alkyl group optionally having a halogen atom, a functional group having a straight or branched aliphatic alkenyl group optionally having a halogen atom, a functional group having an alicyclic alkenyl group optionally having a halogen atom, a functional group having a carboxyl group, or a functional group having a thiol group, as a partial structure; and X and Y are the same or each independently different, provided that at least one of X and Y has a straight or branched aliphatic alkenyl group, an alicyclic alkenyl group, a carboxyl group or a thiol group, as a partial structure. 

[1]benzothieno[3,2-B][1]benzothiophene compound and method for producing the same, and organic electronic device using the same

An ink set includes at least two aqueous inks A and B with different colors, the inks A and B used in an inkjet recording method in which the inks A and B are superimposed for formation of a color image, wherein the ink A contains water-dispersible colorant A1 free of a surfactant-based dispersant, and anionic compound A2, and wherein the ink B contains water-dispersible colorant B1 containing a surfactant-based dispersant.

Ink set, ink cartridge, inkjet recording method, and inkjet recording apparatus

A recording ink containing at least a solid component which contains a colorant and a resin and is a solid at 25&#xb0; C., a liquid component which has a higher boiling point than that of water and is a liquid at 25&#xb0; C. and water, wherein the total content of the liquid component in the recording ink is 20% by mass or less, the total content of the solid component in the recording ink is 20% by mass or more, and the total content of a resin component in the solid component is 40% by mass to 95% by mass relative to a total amount of the solid component is provided.

Recording ink as well as ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method

A benzobisthiazole compound having a specific formula, and a benzobisthiazole polymer having a specific benzothiazole structure. An organic film including the benzobisthiazole polymer, the benzobisthiazole compound and/or a polymer obtained from the benzobisthiazole compound. An organic thin-film transistor including an organic semiconductor layer including the organic film; a pair of electrodes configured to flow an electric current through the organic semiconductor layer; and a third electrode configured to apply a voltage to the organic semiconductor layer.

Benzobisthiazole compound, benzobisthiazole polymer, organic film including the compound or polymer and transistor including the organic film

There is provided a recording ink containing: solid constituents, which contain a colorant and a resin, and stay solid in the ink having a temperature of 25&#xb0; C.; liquid constituents, which have a higher boiling point than a boiling point of water, and stay liquid in the ink having a temperature of 25&#xb0; C.; and water, wherein a total amount of the solid constituents in the recording ink is in the range of 2.0% by mass or more to less than 20% by mass, wherein a ratio A/B of a total amount of the liquid constituents in the recording ink A to the total amount of the solid constituents in the recording ink B is from 0.70 to 1.75, and wherein the viscosity of the recording ink at 25&#xb0; C. is 10 mPa s or less.

Recording ink, ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus, and inkjet recording method

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Mishima, Japan

Tamotsu Aruga