Ricoh Company, Ltd.

Rioch Company, Limited

Ricob Company, Ltd.

Juichi Furukawa

Hidefumi Nagashima

Tomohiro Nakagawa

Naohiro Toda

Ichiroh Fujii

Masahiro Kido

Hikaru Kobayashi

Yukihiro Imanaga

Yuta Nakamura

Tatsuya Tomura

Hiroshi Adachi

Ayaka Tanaka

Hiroshi Gotou

Satoyuki Sekiguchi

Hisashi Habashi

Toshiyuki Kobashi

Masaaki Tsuda

Daisuke Ozaki

Kiyofumi Nagai

Hiroaki Takahashi

Takahiro Yoshida

Michihiko Namba

Keisuke Hayashi

Takashi Tamai

Daisuke Takagi

Toshitaka Osanai

Atsufumi Hanazawa

Shinichi Kakuda

Noriaki Okada

Tatsuya Sameshima

Shigeaki Kimura

Tomoyuki Aratani

An ink discharging device contains an ink containing an organic solvent with an SP value of from 9.0 to 12.0, a white pigment, a polyurethane resin with a glass transition temperature Tg of 0 degrees C. or lower, and water, and an ink discharging unit including a nozzle plate including a liquid repellent layer containing a silicone resin, the ink discharging unit for discharging the ink, wherein the proportion of the organic solvent to the entire of the ink is from 0.5 to 2.5 percent by mass and the proportion of the white pigment to the entire of the ink is from 6 to 15 percent by mass.

Ink discharging device, method of discharging ink, method of manufacturing ink-discharged matter, white ink, and set

A set of inkjet inks used for forming an image by application of an ink on a cloth is provided. The set includes an ink and a pre-processing fluid. The pre-processing fluid contains water, a compound that flocculates an anionic compound, and at least one emulsified sizing agent.

Set of inkjet inks, inkjet image forming method, and inkjet image forming apparatus

A glittery ink contains glittery pigment particles, resin particles, and an organic solvent, wherein the following relationships are satisfied: a≤c≤b and a<b, where a represents the particle diameter of the resin particles corresponding to the minimum of two or more peaks in a particle size distribution as measured by a dynamic light scattering particle size distribution measuring device, b represents the particle diameter of the resin particles corresponding to the maximum of the two or more peaks in the particle size distribution, and c represents the particle diameter of the glittery pigment corresponding to a maximum number of particles in a particle size distribution as measured by the dynamic light scattering particle size distribution measuring device.

Glittery ink and image forming device

Provided is an ink containing water, a plurality of organic solvents, a color material, and resin particles, wherein the plurality of organic solvents contain at least one compound having a hydrogen bond term &#x3b4;H, which is a Hansen solubility parameter, of 4.1 MPaor higher but 9.5 MPaor lower and a boiling point of 170&#xb0; C. or higher and at least one diol compound containing 3 or 4 carbon atoms.

Ink, inkjet recording method, inkjet recording apparatus, and recorded matter

An image recording method is provided. The image recording method includes the steps of: applying a treatment liquid containing a pore forming material onto a recording medium to form a porous layer; and applying a metallic ink containing a metallic pigment onto the porous layer. A surface tension of the metallic ink at 23&#xb0; C. is equal to or greater than a surface tension of the treatment liquid at 23&#xb0; C. The surface tension of the metallic ink at 23&#xb0; C. is 19 mN/m or more and 28 mN/m or less.

Image recording method and ink set

A recording liquid contains a luster pigment having a mean number diameter of less than 200 nm and a modified ethylene vinyl acetate polymer or the combination of a polyamide amine salt and an aliphatic acid amide, wherein the recording liquid has a viscosity of 40 mPa&#xb7;s or less at 20 degrees C.

Recording liquid and printed matter

An image forming method for forming an image on a non-absorbable substrate includes (a) applying a surface processing composition including water, a first organic solvent, and a urethane resin particle to the non-absorbable substrate, (b) applying a non-white ink including water, a second organic solvent, and a second acrylic resin particle and (c) applying a white ink including water, a third organic solvent, a third acrylic resin particle, and a white colorant.

Image forming method, image forming apparatus, and method for manufacturing printed matter

An image forming method comprises applying a white ink containing a metal oxide having a number average particle diameter of from 200 to 700 nm and a polymer to a recording medium and applying a glittery ink containing a glittery pigment to an area on the recording medium where the white ink has been applied, wherein the following relation 1 is satisfied:0.6&#x2264;Vp/(Vp+Ve) &#x2003;&#x2003;Relation 1, where Vp represents a volume of the metal oxide in the white ink and Ve represents a volume of the polymer in the white ink.

Image forming method, image forming device, and recorded matter

Provided is an ink including water, organic solvents, a color material, and resin particles, wherein the ink is used in a printing method including applying the ink onto a substrate including a resin to print, and the organic solvents include a compound, a diol compound including 3 or 4 carbon atoms, and 2-ethylhexyl alcohol, where the compound has a boiling point of 170&#xb0; C. or higher and an absolute value of a difference between Fh of the compound represented by Mathematical Formula 1 and Fh of the resin in the substrate represented by Mathematical Formula 1 is 5% or less,(%)=[&#x3b4;/(&#x3b4;)]&#xd7;100&#x2003;&#x2003;&#x3c;Mathematical Formula 1&#x3e;where, in Mathematical Formula 1, &#x3b4;H is a hydrogen bond term of the Hansen solubility parameter, &#x3b4;D is a dispersion term of the Hansen solubility parameter, and &#x3b4;P is a polarity term of the Hansen solubility parameter.

Ink, set of ink and substrate, ink-jet printing method, ink-jet printer, and print

A print method includes applying a first ink to a recording medium to form a first ink print layer, drying the first ink print layer to a drying ratio of 30 percent or less, and applying a second ink having a color different from that of the first ink to the first ink print layer to form a second ink print layer thereon, wherein the first ink includes a urethane resin particle and a water-soluble organic solvent having a boiling point of from 100 to 180 degrees C. or &#x3b2;-alkoxy propionamide of Chemical formula I, 

Print method, ink set, and inkjet print device

A surface treatment liquid composition for a substrate includes a nonionic resin particle and a multivalent metal salt.

Surface treatment liquid compostion, ink set, recording method, and recording device

An ink including: water; at least one organic solvent; a polysiloxane surfactant; and acryl-silicone resin particles, where the polysiloxane surfactant has an HLB value of 8 or less.

Ink, inkjet printing apparatus, inkjet printing method, and printed matter

An aqueous ink for inkjet includes water, at least one hydrosoluble organic solvent each having a boiling point of 250&#xb0; C. or lower; vinyl polymer particles containing a pigment, and polycarbonate-based urethane resin particles, wherein the aqueous ink for inkjet is used for an inkjet recording system including a heating step.

Aqueous ink for inkjet, inkjet recording method, inkjet recorded matter, and inkjet recording device

A cleaning liquid for an inkjet recording apparatus is provided. The cleaning liquid includes an organic solvent having a boiling point of less than 250&#xb0; C. and no organic solvent having a boiling point of 250&#xb0; C. or more. The organic solvent having a boiling point of less than 250&#xb0; C. includes two or more methoxy-group-containing organic solvents and at least one of 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, and 2,3-butanediol.

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Kanagawa, Japan

Juichi Furukawa