Seiko Epson Corporation

Mitsubishi Chemical Corporation

Mikuni Shikiso Kabushiki Kaisha

Eiko Epson Corporation

Takashi Oyanagi

Keitaro Nakano

Kiyohiko Takemoto

Chiyoshige Nakazawa

Hiroki Nakane

Akio Ito

Masaaki Itano

Kazuaki Tsukiana

Kazushige Inoue

Tsuyoshi Sano

Hiroshi Fukumoto

Seishin Yoshida

Shuichi Koganehira

Tetsuya Aoyama

Hidehiko Komatsu

Toshiyuki Miyabayashi

Kazuhiko Kitamura

Masahiro Ueda

Yukio Sugita

Kazuhide Kubota

Shuichi Kataoka

Munetaka Kakiuchi

Kimihiko Ohya

Seiji Kamamasu

A pigment dispersion containing a metal pigment, wherein the metal pigment contains plate-like particles, and in the case where the longitudinal diameter on the planar surface of the plate-like particle is X, the lateral diameter is Y, and the thickness is Z, the 50% average particle diameter R50 of a corresponding circle determined from the surface area in the X-Y plane of the plate-like particle is between 0.5 and 3 &#x3bc;m, and the condition R50/Z&#x3e;5 is satisfied.

Pigment dispersion, ink composition, inkset, and recording device

The present invention is directed to an ultraviolet curing ink jet ink composition which contains at least a polymerizable compound and a photopolymerization initiator, and is free from an aqueous solvent. The polymerizable compound comprises at least a urethane oligomer, and the photopolymerization initiator comprises an acylphosphineoxide and &#x3b1;-hydroxyketone. The polymerizable compound further comprises an allyl compound and/or an N-vinyl compound.

Ink composition, two-pack curing ink composition set, and recording method and recorded matter using these

An ink set includes a metallic ink composition containing a metal pigment and at least one curable ink composition selected from the group consisting of a chromatic ink composition, a black ink composition, and a white ink composition.

Ink set, ink-jet recording method, and recorded material

A recording apparatus includes an endless belt that transports a recording medium by supporting a first surface of a tape-like recording medium on a support surface; and a recording head that performs recording by ejecting ink on a second surface that is an attachment surface coated with an adhesive on the opposite side to the first surface of the recording medium transported by the endless belt.

Recording apparatus

A pigment dispersion containing metal pigment, wherein the metal pigment contains plate-like particles, and in the case where the longitudinal diameter on the planar surface of the plate-like particle is X, the lateral diameter is Y, and the thickness is Z, the 50% average particle diameter R50 of a corresponding circle determined from the surface area in the X-Y plane of the plate-like particle is between 0.5 and 3 &#x3bc;m, and the condition R50/Z&#x3e;5 is satisfied.

The present invention is directed to an ultraviolet curing ink jet ink composition which contains at least a polymerizable compound and a photopolymerization initiator, and is free from an aqueous solvent. The polymerizable compound comprises at least a urethane oligomer, and the photopolymerization initiator comprises an acylphosphineoxide and &#x3b1;-hydroxyketone.

A liquid composition including: a radical polymerization inhibitor; a solvent; and a surfactant, wherein the content of the radical polymerization inhibitor is 0.1 to 50% by weight.

Liquid composition, ink jet recording method, ink jet recording apparatus and recorded article

A method of forming an opaque layer includes forming a first layer by discharging droplets of an ink composition containing a metallic pigment on a record medium by an ink-jet recording process and forming a second layer by discharging droplets of an ink composition containing a white pigment on the record medium by an ink-jet recording process. The opaque layer is formed on the record medium on the side where the first layer and the second layer are formed in a region where the first layer and the second layer overlap each other.

Method of forming opaque layer, recording process, ink set, ink cartridge, and recording apparatus

The present invention provides an ink composition comprising at least a polymerizable compound, a photo-polymerization initiator and a polymerization accelerator, wherein the polymerizable compound comprises en N-vinyl compound, the photo-polymerization initiator comprises two or more compounds selected from the group consisting of bisacylphosphine oxides, monoacylphosphine oxides and &#x3b1;-amino ketones, and the polymerization accelerator comprises fine particles having a polymerizable functional group. The ink composition of the invention may be a transparent ink composition containing no coloring material. The ink composition of the invention may further contain a fluorescent whitening agent.

Ink composition

A light emitting device includes a substrate, a light emitting body, a thermally conductive member, and a heat radiation member. The substrate has a first face and a second face which is a face opposite to the first face. The light emitting body is held on a side of the first face of the substrate and emits light. The thermally conductive member is provided so as to be in contact with the second face of the substrate and contains a high thermal conductive material. The heat radiation member is provided so as to be in contact with the thermally conductive member and radiates heat conducted from the substrate through the thermally conductive member.

Growing community of inventors

Shiojiri, Japan

Takashi Oyanagi