Ricoh Company, Ltd.

Rioch Company, Limited

Hidefumi Nagashima

Juichi Furukawa

Naohiro Toda

Tomohiro Nakagawa

Ichiroh Fujii

Masahiro Kido

Hikaru Kobayashi

Kiyofumi Nagai

Michihiko Namba

Yuta Nakamura

Yukihiro Imanaga

Mariko Kojima

Masaaki Tsuda

Hiroshi Goto

Hiroaki Takahashi

Takahiro Yoshida

Hiroshi Gotou

Akiko Bannai

Hisashi Habashi

Takashi Tamai

Koji Katsuragi

Mio Kumai

Yukitaka Watarai

Yuri Haga

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 ink contains a water-soluble organic solvent, a glittery pigment having a median size less than 300 nm, and a polycarbonate-based urethane resin.

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

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.

Cleaning liquid for inkjet recording apparatus, method for cleaning inkjet recording apparatus, recording method, and cleaning and filling liquid

An ink for inkjet includes water; two or more hydrosoluble organic solvents; a pigment; and a resin particle more than the pigment by weight. A hydrosoluble organic solvent A having the smallest SP value and a hydrosoluble organic solvent B having the largest SP among the two or more hydrosoluble organic solvents satisfy the following relations (1) and (2):value of hydrosoluble organic solventvalue of hydrosoluble organic solvent&#x2267;3&#x2003;&#x2003;(1)boiling point of hydrosoluble organic solvent&#x3e;boiling point of hydrosoluble organic solvent&#x2003;&#x2003;(2).

Ink for inkjet and inkjet recording method

An inkjet ink set is provided. The inkjet ink set includes a first ink including a resin A and an organic solvent A; and a second ink including a resin B and an organic solvent which is the same as or different from the organic solvent A. The minimum film forming temperature (MFT) of the resin A is lower than that of the resin B.

Inkjet ink, inkjet recording method using the inkjet ink, and print formed by the inkjet ink

An inkjet ink, containing: water; a water-soluble organic solvent; a pigment; and polycarbonate urethane resin particles, wherein the water-soluble organic solvent contains 50% by mass or more of a diol compound, and wherein the water-soluble organic solvent contains 50% by mass or more of a water-soluble organic solvent having a boiling point of 200&#xb0; C. or less.

Inkjet ink, inkjet recording method and ink recorded matter

An ink contains a colorant, a water soluble organic solvent, a silicone-based surfactant, a compound represented by the following chemical formula 1, and water, wherein the water soluble organic solvent having a boiling point of 250&#xb0; C. or higher accounts for 38% by weight or less in a total amount of the water soluble organic solvent,  where Rand Reach, independently represent aliphatic hydrocarbon groups having 3 to 6 carbon atoms with forks and Rand Reach, independently represent alkyl groups having one to two carbon atoms, and n represents an integer of from 1 to 6.

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

An ink for inkjet recording, including: water; a water-soluble organic solvent; a pigment; and resin particles, wherein 50% by mass or more of the water-soluble organic solvent is a water-soluble organic solvent having a boiling point of lower than 200&#xb0; C., and the water-soluble organic solvent having a boiling point of lower than 200&#xb0; C. comprises 3-methoxy-3-methyl-1-butanol.

Ink for inkjet recording and recording method therewith

An inkjet recording method includes forming an image on a coated layer provided at least one side of the substrate of a recording medium with ink containing a colorant; and then applying a post-processing fluid comprising a resin to the image; wherein the application amount per unit area of the post-processing fluid to the image is controlled to be less than the application amount per unit area of the ink to form the image.

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Kanagawa, Japan

Hidefumi Nagashima