Seiko Epson Corporation

Fujifilm Corporation

Nitto Boseki Co., Ltd.

Orient Chemical Industries, Ltd.

Iko Epson Corporation

Kazuhiko Kitamura

Yasuhiro Oki

Hiroshi Fukumoto

Akihito Sao

Tetsuya Aoyama

Hiroshi Takahashi

Hitoshi Ohta

Shigemi Wakabayashi

Masahiro Hanmura

Nobuo Uotani

Yuji Ito

Hiromi Iseki

Hiroko Hayashi

Yasunari Ikeda

Ryosuke Teramoto

Kyoichi Oka

Yoshiharu Yabuki

Hidefumi Maruyama

Toshiaki Kakutani

Hitoshi Ota

Kiyohiko Takemoto

Keiichi Tateishi

Takashi Oyanagi

Masahiro Yatake

Hidehiko Komatsu

Miharu Kanaya

Shigeaki Tanaka

Toshiki Fujiwara

Shinichi Kato

Shuji Sugawara

Makoto Taniguchi

Yoshifumi Hano

Ikuo Hayashi

Yoshihiro Sawatari

Motoki Masuda

Makiko Matsui

Hiroshi Itoh

Tadashi Kato

Yasuhiro Fujita

Hitosi Ohta

An ink set according to one embodiment of the disclosure includes a colored ink composition, which contains a pigment and is a water-based ink jet ink, and a water-based resin liquid composition which contains a resin, in which the resin liquid composition contains a urethane resin having an alicyclic structure or an aromatic ring structure and an acid value of 50 to 100 mg KOH/g.

Ink set and recording method

An ink jet etching method according to the invention includes an etching step of etching fabric by using an ink set including first etching ink containing an etching agent, and second etching ink containing the etching agent in which a concentration of the etching agent is lower than a concentration of the etching agent in the first etching ink, in which etching fabric includes ejecting the first etching ink is ejected from two or more nozzle arrays among a plurality of nozzle arrays included in a recording head.

Ink jet etching method and ink jet printing system

Disclosed are an ink composition containing at least one of a porphyrazine compound or a salt thereof and an aromatic compound having a sulfo group or a salt thereof, an ink jet recording method using the ink composition and a recorded material recorded by the recording method.

Ink composition, ink jet recording method using the same and recorded material

Disclosed are an ink composition at least containing a porphyrazine compound or a salt thereof and an aromatic compound having a carboxy group and/or a salt thereof, an ink jet recording method using the ink composition and a recorded material recorded by the recording method.

Ink compostion, recording method using the same and recorded material

An ink composition contains a dye whose free acid is expressed by formula (1), lithium ions, and an aromatic compound having a carboxy group. In formula (1), Q represents a halogen atom, x represents an integer of 2 to 4, and y represents an integer of 1 to 3.

Ink composition, recording method, and recorded article

An ink composition contains a particular anthrapyridone dye and a particular copper phthalocyanine dye. The hue angle in the L*a*b* color system calculated from spectral characteristics of a 1,000-fold diluted solution of the ink composition in water is 270&#xb0; to 360&#xb0;. The content of the anthrapyridone dye is higher than the content of the copper phthalocyanine dye.

Ink composition

An ink composition includes: water, a compound represented by the following general formula (1) or a salt thereof, and a compound represented by the following general formula (21) or a salt thereof.  Group A represents a substituted heterocyclic group represented by the following general formula (2) or (3):   

Ink composition and ink jet recording method using the same

An ink composition contains a water-soluble copper compound and an anthrapyridone dye represented by the following formula: wherein Mrepresents a hydrogen atom, NH, or Na; Rrepresents a hydrogen atom, a substitutable alkyl group, a substitutable aryl group, or a substitutable benzoyl group; Rrepresents a hydrogen atom or a substitutable alkyl group; Rrepresents a hydrogen atom, a halogen atom, or a substitutable alkyl group; Rrepresents a hydrogen atom, NHwhich may be substituted, or a substitutable sulfo group; and Rrepresents an acyl group or a group represented by the following formula: where X and Y independently represent a chlorine atom, hydroxy group, amino group, monoethanolamino group, diethanolamino group, morpholino group, anilino group, or phenol group in which hydrogen atoms may be substituted by one or more substituents.

An ink composition at least comprising water and a colorant, and further comprising 0.01% by weight or more of lithium ions based on the total weight of the ink composition, wherein at least one type of glycol ether represented by the following formula 1 is contained:RO&#x2014;[&#x2014;CH&#x2014;CH&#x2014;O]&#x2014;R&#x2003;&#x2003;Formula 1

INK composition

Problem: To improve clogging and ink droplet deflection. Solving Means: An ink composition comprising at least water, a colorant and an aromatic compound having a carboxyl group, which contains at least one member selected from the group consisting of a sodium ion, a potassium ion and an ammonium ion and also contains a lithium ion. Alternatively, an ink composition comprising at least water, a specific cyan dye and an aromatic compound having a carboxyl group, which contains a lithium ion and also contains a sodium ion and/or a potassium ion.

Ink composition, and ink jet recording method and recorded matter using the same

An ink set containing at least a yellow ink composition, a magenta ink composition, and a cyan ink composition:

Ink set, ink cartridge, inkjet recording method, and recorded matter

An inkset comprising at least a yellow ink composition, two types of magenta ink compositions of different color density, and a cyan ink composition:

Inkset, ink cartridge, inkjet recording method, and recorded matter

An ink set including at least a yellow ink composition, a magenta ink composition, and a cyan ink composition; the magenta ink composition containing as a colorant at least one type of compound expressed by the Formula M-1 in claim; the yellow ink composition containing as a colorant at least one type of compound expressed by the formula Y-1 in claim; and the cyan ink composition containing as a colorant at least one type of compound selected from the group consisting of compounds or salts thereof expressed by the Formula C-1 in claim

An ink composition including at least water, a cyan dye represented by the formula shown below and an aromatic compound having a carboxyl group and/or a salt thereof; an inkjet recording method using the composition; and recorded matter which is recorded by the recording method wherein M represents a hydrogen atom, a metal element, a metal oxide, a metal hydroxide or a metal halide, Rto Reach independently represents &#x2014;SOZ, and Z represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group, provided that at least one of four Z's has an ionic hydrophilic group as a substituent.

An ink set includes an oil ink composition containing a metal pigment; and at least one aqueous ink composition selected from the group consisting of a chromatic ink composition containing a chromatic pigment, a black ink composition containing a black pigment, and a white ink composition containing a white pigment.

Growing community of inventors

Matsumoto, Japan

Kazuhiko Kitamura