Ricoh Company, Ltd.

Goo Chemical Company, Ltd.

Yuusuke Koizuka

Kazukiyo Nagai

Akihiko Matsuyama

Keita Katoh

Shigeyuki Harada

Tomoyuki Shimada

Mitsuru Naruse

Masayasu Nonogaki

Yoshiki Yanagawa

Akiyoshi Sabu

Masayuki Fukuoka

Takuya Yamazaki

Koichiro Oyama

Minoru Hakiri

Naoto Shimura

Nozomi Terai

Tetsuro Suzuki

Yuuji Tanaka

Tatsuya Takarada

Hiroshi Gotou

Yuuki Yokohama

Amika Sagara

Masaki Kudo

Yuya Hirokawa

Nobuyuki Sakamoto

Yosuke Matsuoka

Masatomo Takahashi

Takashi Okada

Takayuki Shimizu

Michihiko Namba

Soh Noguchi

Mitsunobu Morita

Hidetoshi Fujii

Hisashi Habashi

Koji Katsuragi

Mio Akima

Takuya Saiga

Itsuro Sasaki

Yuichi Tanioku

Shunsuke Horie

Takuya Furuta

Kenta Hagiwara

Masato Matsumura

An image forming method includes a processing fluid applying step and an ink applying step. The processing fluid applying step involves applying a processing fluid containing a multivalent metal salt, a resin T, a resin Tdifferent from the resin T, and a silicone-based surfactant to a non-permeating base material by an inkjet method, where the processing fluid is free of an organic solvent having a boiling point of 200° C. or higher at normal pressure. The ink applying step involves applying an ink containing a coloring material, an organic solvent, and a resin onto the processing fluid.

Image forming method, set of processing fluid and ink, and image forming apparatus

A printing method includes discharging ink to a substrate, heating a non-ink-discharged side of the substrate at T, and heating an ink-discharged side of the substrate at T, wherein the ink contains an organic solvent A (boiling point lower than 250 degrees C.), an organic solvent B (boiling point of 250 degrees C.), and a resin, where 0 degrees C. C≤T−T≤90 degrees C. is satisfied, the proportion (organic solvent A/ink) is 30 percent by mass or less, the proportion (organic solvent B/ink) is 1 to 3 percent by mass, the proportion (resin/ink) is 5 to 15 percent by mass, the ink has a viscosity of 8.0 to 11.0 mPa-s at 25 degrees C. and 5.5 to 11.0 mPa-s at 36 degrees C., and a 2.5 μL ink droplet discharged to the substrate shrinks to 0.1 μL within 10.0 seconds at 25 degrees C.

Printing method and printing device

Provided is an ink set including standard ink and light ink. Standard ink includes cyan, magenta, and yellow inks. Light ink includes a light cyan or light magenta ink, or both. The pigment concentration in cyan ink is 1.9% by mass or greater but 3.6% by mass or less. The pigment concentration in light cyan ink is 0.4% by mass or greater but 1.4% by mass or less. The pigment concentration in magenta ink is 1.9% by mass or greater but 3.6% by mass or less. The pigment concentration in light magenta ink is 0.4% by mass or greater but 1.4% by mass or less. The light ink contains water, organic solvent, and resin. The organic solvent contains amide compound represented by General formula (1). In General formula (1), R, R, and Reach represent a hydrocarbon group containing from 1 through 8 carbon atoms.

Ink set, inkjet printing apparatus, and inkjet printing method

Printed matter includes a substrate comprising a vinyl chloride resin and a printing layer on the substrate, wherein the surface of the substrate has a static friction coefficient of from 0.04 to 0.06 and a dynamic friction coefficient of from 0.02 to 0.03 when the surface of the substrate is rubbed with standard adjacent fabrics for staining for color fastness test under a load of 200 g, wherein the surface of the printing layer has a static friction coefficient of from 0.35 to 0.50 and a dynamic friction coefficient of from 0.20 to 0.30 when the surface of the printing layer is rubbed with standard adjacent fabrics for staining for color fastness test under a load of 200 g.

Printed matter

Provided is a liquid discharging apparatus including a liquid discharging unit configured to discharge a liquid, and a dummy discharge receptacle including an absorbing member configured to absorb a liquid dummy-discharged by the liquid discharging unit, wherein the liquid discharging unit discharges a liquid having a resin content of 5% by mass or greater, and wherein the absorbing member of the dummy discharge receptacle is formed of melamine foam.

Liquid discharging apparatus

Ink includes water, a coloring material, and a copolymer including a first structure unit represented by the following Chemical formula 1 and a second structure unit including an anionic group.  In the Chemical formula, R represents a hydrogen atom or a methyl group, X represents an alkylene group having 2-4 carbon atoms, and Y represents a substituted or non-substituted straight-chain alkylene group having 5 to 7 carbon atoms.

Ink, method of manufacturing ink, and ink cartridge

An ink and cleaning liquid set includes an ink comprising a coloring material and a resin and a cleaning liquid comprising water and at least one type of organic solvent, wherein the ink in a dried form has a glass transition temperature of from 40 to 90 degrees C. and the swelling ratio calculated from a mass of a film of the ink in a dried form before and after immersion in the cleaning liquid is 10 percent or greater according to the following relationship 1: swelling ratio (percent)=100&#xd7;[(B&#x2212;A)/A] Relationship 1, where A represents the mass of the film before the immersion and B represents the mass of the film after the immersion.

Ink and cleaning liquid set, inkjet printing device, inkjet printing method, and method of cleaning nozzle surface of inkjet discharging head

An ink, includes water; a coloring material; and a cross-linked copolymer having a structure unit represented by the following Chemical formula 1, and a structure unit represented by the following Chemical formula 2, 

Ink, ink cartridge, image forming method, and printed matter

A curable composition includes an acrylamide compound represented by the following Chemical formula 1:   

Curable composition, curable ink, accommodating container, image forming device, image forming method, cured matter, and acrylamide compound

A copolymer including a structural unit represented by General Formula (1) below, and a structural unit represented by General Formula (2) below, where, in General Formula (1), Ris a hydrogen atom or a methyl group, Lis an alkylene group having 2 or greater carbon atoms but 5 or less carbon atoms, and X is a hydrogen atom or a cation, where, in General Formula (2), Ris a hydrogen atom or a methyl group and Lis an alkylene group having 2 or greater carbon atoms but 18 or less carbon atoms.

Copolymer, ink including copolymer, and ink-stored container

An ink includes a pigment, a wax, a water soluble solvent including a solvent having an SP value of from 9.0 to 11.0, and water, wherein the mass ratio of the content of the wax in the ink to the content of the solvent having an SP value of from 9.0 to 11.0 is in a range of from 1.0:2.5 to 1.0:25.0.

Ink, ink container, inkjet recording device, and recorded matter

Provided is an ink containing water, a coloring material, and a copolymer, wherein the copolymer contains a structural unit represented by any one of general formulae (1a), (1b), and (1c) below and a structural unit containing an anionic group, where Rrepresents a hydrogen atom or a methyl group, a represents an integer of from 6 through 10, and b represents an integer of 0 or 1, where Rrepresents a hydrogen atom or a methyl group, c represents an integer of 3 or 4, and d represents an integer of 0 or 1, where Rrepresents a hydrogen atom or a methyl group and e represents an integer of from 2 through 10.

Ink and method for producing same, and ink stored container, printing method, and printing apparatus

To provide a copolymer including: a structural unit represented by the following General Formula (1) where X represents a hydrogen atom or a cation; a structural unit expressed by the following Structural Formula (1); and a structural unit represented by the following General Formula (2) where R is a hydrogen atom or a methyl group, L is a single bond or &#x2014;(CH)&#x2014;O&#x2014;CO&#x2014; where n is an integer in a range of from 2 through 18, and a carbonyl carbon atom in the &#x2014;(CH)&#x2014;O&#x2014;CO&#x2014; is bound to naphthyl. 

Copolymer, aqueous ink, and ink cartridge

An ink includes a pigment a quinacridone compound represented by Chemical formula 1, and a copolymer including the structure unit represented by Chemical formula 2 or Chemical formula 3.  In Chemical formula 1, R, R, R, and Reach, independently represent hydrogen atoms, halogen atoms, or alkyl groups having 1-4 carbon atoms, R, R, and Reach, independently represent alkyl groups having 1-4 carbon atoms or alkylene groups having 1-4 carbon atoms, and m represents 1 or 2,  In Chemical formula 2, Rrepresents a hydrogen atom or a methyl group and Lrepresents an alkylene group having 2-16 carbon atoms,  In Chemical formula 3, R9 represents a hydrogen atom or a methyl group, L2 represents a single bond or &#x2014;(CH)&#x2014;O&#x2014; and n represents an integer of 2-16.

Ink, recorded matter, ink container, recording device, and recording method

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Shizuoka, Japan

Yuusuke Koizuka