Ricoh Company, Ltd.

Nippon Kayaku Kabushiki Kaisha

Yuki Kaji

Tomohiro Nakagawa

Hiroki Hagiwara

Tatsuya Morita

Michiaki Takeda

Maiko Iwami

Aiko Matsumura

A colored dispersion for inkjet and a method for producing the same, the colored dispersion including a colorant, a dispersant, a tellurium compound, and water, in which the dispersant is an A-B block polymer; monomers constituting an A block are (meth)acrylic acid and butyl (meth)acrylate; the content of the (meth)acrylic acid in the A block is 26-42 mass %; a monomer constituting a B block includes cyclohexyl (meth)acrylate; the acid value of the dispersant is 100-159 mg KOH/g; and the mass-average molecular weight of the dispersant is 10,000-50,000. An inkjet recording ink containing the dispersion; an inkjet recording method using the ink; recording media to which the ink adheres; and an inkjet printer equipped with a container containing the ink.

Colored dispersion for inkjet, inkjet recording ink, and inkjet recording method

An ink is provided. The ink comprises a colorant, water, an organic solvent comprising a glycol ether having a solubility parameter of from 9.0 to 12.0 (cal/cm), and a surfactant comprising a silicone-based surfactant (a) and a nonionic surfactant (b).

Ink, inkjet printing method, and printed matter

An image forming method includes applying a pre-processing fluid to a non-permeable recording medium, jetting an ink to the non-permeable recording medium, and accelerating drying the pre-processing fluid applied to and the ink jetted to the non-permeable recording medium, wherein the pre-processing fluid contains a multivalent metal salt and a resin particle.

Image forming method, image forming device, and method of manufacturing printed matter

An image forming method includes coating a non-absorptive recording medium with a pre-processing fluid containing a metal salt and a resin A; and applying a magenta ink to the non-absorptive recording medium which has been coated with the pre-processing fluid, wherein the magenta ink contains a resin B having a glass transition temperature higher than the glass transition temperature of the resin A and C.I.Pigment Red 269 represented by the following Chemical formula 1: 

Growing community of inventors

Kanagawa, Japan

Yuki Kaji