Seiko Epson Corporation

Nagatoshi Kasahara

Tomohiro Sayama

Hironori Sato

Masako Fukuda

Masahiro Yatake

Jun Ito

Hidehiko Komatsu

Kazuhiko Hara

Miharu Kanaya

Hiroko Hayashi

Hiroshi Mukai

Hitoshi Ohta

Masashi Kamibayashi

Toshihiro Shinbara

Shinichi Tsubota

Keiichi Noto

Disclosed is an ink composition for ink jet recording that can realize excellent printing quality on various recording media, has a high level of color developing properties particularly on plain paper, and can realize excellent gloss for glossy paper and, at the same time, is excellent in ink reliability such as ejection stability, storage stability, and recovery from clogging. The ink composition includes at least a magenta solid solution pigment, a polymer, which can render the pigment dispersible in the ink composition, and water. The polymer is produced by copolymerizing a monomer composition including at least a styrene macromer (A) and a salt forming group-containing monomer (B).

Ink composition containing magenta solid solution pigment and ink jet recording method using the same

A maintenance device includes a liquid absorption body which absorbs a liquid which is attached to a nozzle forming surface by abutting the nozzle forming surface of a liquid ejecting head in which a plurality of nozzle rows configured of a plurality of nozzles ejecting the liquid are provided in parallel, wherein the liquid absorption body has a penetration suppressing section which suppresses the spread of the liquid due to penetration of the liquid absorbed from the nozzle forming surface of the liquid ejecting head, and wherein the penetration suppressing section is disposed between the nozzle rows ejecting the liquids of different colors from each other in a direction intersecting the nozzle row direction, in a case where the liquid absorption body abuts the nozzle forming surface of the liquid ejecting head.

Maintenance device and liquid ejecting apparatus

A printing apparatus includes a head having a nozzle through which ink that contains thermoplastic resin particles and whose viscosity at 50&#xb0; C. is equal to or greater than 2.1 mPa&#xb7;s is discharged, a pressure chamber, and a driving element; an ink non-absorptive medium; a heating unit; and a control unit that applies driving signals to the driving element. In the printing apparatus, a discharge waveform generated by the driving signal includes a first expansion-element that expands the pressure chamber, a contraction-element that contracts the pressure chamber having been expanded by the first expansion-element, a second expansion-element that expands the pressure chamber having been contracted by the contraction-element, a third expansion-element that further expands the pressure chamber having been expanded by the second-expansion element, and a connection-element that connects an end terminal of the second expansion-element with a start terminal of the third expansion-element at the same potential.

Printing apparatus and printing method

An aqueous ink ensuring less blurring and high color formation on plain paper, satisfactory color formation and fixing property on special paper and excellent ejection stability is realized by using a microcapsule of a colorant encapsulated with a polymer and rendered dispersible in water and specifying the amount of the aromatic ring in the polymer to be from 20 to 70 wt % of the polymer.

Water-based ink, water-based ink set, and process for producing dispersion

There is provided an ink jet recording apparatus including: first cleaning which performs non-recording ejection of ink for ink jet recording to an ink receiving medium and cleans a nozzle and a nozzle surface of a print head; second cleaning which moves the print head to the ink receiving medium, performs non-recording ejection of the ink for ink jet recording from the print head to the ink receiving medium under a condition that the amount of the ink for ink jet recording is smaller than an amount of the ink ejected in the non-recording ejection by the first cleaning and an execution frequency is higher than that in the first cleaning, and cleans the nozzle of the print head; and a wiping mechanism which wipes the nozzle surface by using a wiping member.

Ink jet recording apparatus

Growing community of inventors

Matsumoto, Japan

Nagatoshi Kasahara