Ricoh Company, Ltd.

Hidetoshi Fujii

Hiroshi Gotou

Yuuki Yokohama

Michihiko Namba

Kiyofumi Nagai

Shigeyuki Harada

Amika Sagara

Hiroshi Goto

Akihiko Gotoh

Akira Izutani

Tomoyuki Shimada

Kazukiyo Nagai

Tamotsu Aruga

Hiroaki Takahashi

Akihiko Matsuyama

Yoshiki Yanagawa

Yuusuke Koizuka

Akiyoshi Sabu

Daisuke Asahina

Masayuki Fukuoka

Takashi Tamai

Takuya Yamazaki

Kiminori Masuda

Manabu Arita

Kohta Akiyama

Ryo Miyakoshi

Yuya Hirokawa

Takuya Saiga

Ryoh Miyakoshi

An image forming method includes discharging ink containing water, a coloring material, a polymerization initiator, and a polymerizable compound to a recording medium by a line head to obtain an image, exposing the image to active energy radiation, applying a processing fluid to the image, and drying the image with heat, wherein the time interval between when the ink is discharged in the discharging from the line head to the recording medium passing under a bottom portion of the line head and when the recording medium is exposed to the active energy radiation in the exposing is from 0.5 to 15 seconds.

Image forming method

An active-energy-ray-polymerizable initiator having a structure represented by the following general formula (1) is provided. In general formula (1), Lrepresents &#x2014;C(&#x2550;O)&#x2014;O&#x2014; (binding to Lside) or &#x2014;O&#x2014;, Lrepresents &#x2014;O(CH)-(binding to Lside), &#x2014;(OCH)-(binding to Lside), or &#x2014;(OCH)-(binding to Lside), where p represents an integer of 2 to 16, n represents an integer of 2 to 12, and m represents 2 or 3, Lrepresents a direct binding or &#x2014;NH&#x2014;, Lrepresents &#x2014;OCH-(binding to Lside) or &#x2014;(OCH)-(binding to Lside), and R represents &#x2014;H or &#x2014;CH.

Active-energy-ray-polymerizable initiator, active-energy-ray-polymerizable composition, active-energy-ray-polymerizable ink, ink storage container, image forming method, and image forming apparatus

A curable composition comprises water, a polysilane compound having a phenyl group, and at least one of a polymerizable particle and a polymerizable monomer.

Curable composition, curable ink, accommodating unit, two- or three-dimensional image forming device, two-dimensional or three-dimensional image forming method, cured matter, and printed matter

An active energy ray-curable composition is provided which comprises a polymerizable monomer, a polysilane compound containing a phenyl group in a repeating unit, and a photopolymerization initiator.

Active energy ray-curable composition, active energy ray-curable ink, composition storing container, two-dimensional or three-dimensional image forming device, method for producing cured product, and cured product

An ink is provided. The ink includes a colorant, an organic solvent, a resin particle including an anionic urethane resin, and an organic amine compound having a boiling point in the range of from 120&#xb0; C. to 200&#xb0; C. and a molecular weight of 100 or less, and water, and the mass ratio of the organic amine compound to the resin particle is in the range of from 0.01 to 1.00.

Ink, image forming method, image forming apparatus, and image formed product

Member for an image forming apparatus having an outer layer that includes polyethylene glycol and a polyether ester amide having therein a structural unit of polyethylene glycol.

Member for an image forming appratus

An ink including an organic solvent, a pigment, a polyurethane particle, and water is provided. The organic solvent includes at least one of 3-methoxy-1-butanol and 3-methoxy-1-propanol. The polyurethane particle has a particle diameter D50 of 50 nm or less.

Ink, ink container, and inkjet recording apparatus

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

A member for an image forming apparatus includes a surface layer including a block copolymer, wherein the block copolymer includes a polyamide block and a polyether block and the composition ratio of the polyether block to the polyamide block is from 0.2 to 1.5.

Intermediate transfer member for image forming apparatus, method of manufacturing the same and image forming apparatus

To provide an inkjet ink, which contains: water; a wetting agent; a surfactant; and a colorant, wherein the wetting agent contains at least an amide compound represented by the following structural formula (I): 

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

Inkjet ink contains water, hydrosoluble organic materials; and a colorant, wherein the hydrosoluble organic materials account for 30% by weight to 50% by weight of the inkjet ink, wherein the hydrosoluble organic materials contain 3-methoxy-1-butanol, herein the hydrosoluble organic materials contain at least one of 1,3-butane diol, 3-methyl-1,3-butane diol, 1,2-butane diol, 2,3-butane diol, 1,2-pentane diol, 3-methyl-3-hydroxymethyl oxetane, 1,2-propane diol, or 1,3-propane diol in an amount of 1% of the inkjet ink.

Inkjet ink, ink cartridge, inkjet recording device, and ink printed matter

An ink for inkjet includes water, a hydrosoluble organic material and a hydrodispersible colorant. The ink satisfies the following requirements (A) to (C):

Ink for inkjet, inkjet recording method, inkjet recorder and ink recorded matter

An inkjet ink of the present invention including: water; an organic solvent; a surfactant; and a colorant, wherein the organic solvent comprises the following (1), (2) and (3): (1) at least one polyhydric alcohol having an equilibrium moisture content of 30% by mass or higher at a temperature of 23&#xb0; C. and humidity of 80% RH; (2) an amide compound expressed by the Structural Formula (I); (3) a compound expressed by the Structural Formula (II); a compound expressed by the Structural Formula (III), or a compound represented by the General Formula (I), or any combination thereof.

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Kanagawa, Japan

Hidetoshi Fujii