Seiko Epson Corporation

Keisuke Morita

Tomohito Nakano

Kazuyoshi Tanase

Yusuke Mizutaki

Takuya Sonoyama

Shotaro Watanabe

Keiji Iida

Kentaro Tanaka

Miki Iinuma

A recording device provides, when a first mode that is a recording mode for increasing concentration of black is selected, in a first nozzle row including first nozzles capable of discharging a first ink representing black by a single color or a mixed color, and a second nozzle row including second nozzles capable of discharging a second ink having a lower pigment concentration than a black ink and being an achromatic color, a nozzle unused region by a first nozzle not discharging a first ink and a second nozzle not discharging a second ink, between a first nozzle usage region including the first nozzle discharging the first ink onto the recording medium, and a second nozzle used region including the second nozzle for discharging the second ink onto a region of the recording medium onto which the first ink is discharged.

Recording device and recording method

An ink jet recording method includes: a step of forming an image by ejecting liquid droplets of an aqueous color ink to a recording medium; and a step of forming a coating ink layer by ejecting liquid droplets of an aqueous coating ink on the image, and in the ink jet recording method described above, the aqueous color ink is ejected in the form of a plurality of liquid droplets having different liquid droplet amounts per one droplet, and the aqueous coating ink is ejected to have a liquid droplet amount per one droplet smaller than a liquid droplet amount of a smallest liquid droplet of the aqueous color ink.

Ink jet recording method

An ink jet recording apparatus includes a first tank storing a first ink and a second tank storing a second ink different from the first ink. The first tank and the second tank are arranged so as to have overlap when viewed in a vertical direction in an apparatus-using state.

Ink jet recording apparatus and ink jet recording set

An ink composition includes 3-methyl-1,5-pentanediol; trimethylolpropane; water; and a pigment, in which no more than 0.5% by mass of 1,2-hexanediol is contained, and a mass ratio of the trimethylolpropane to the 3-methyl-1,5-pentanediol is 0.12 or more and 2 or less.

Ink composition

An aqueous ink composition contains: an alkanediol having a normal boiling point of 240&#xb0; C. or higher; polyoxyethylene mono(2-ethylhexyl) ether having a carbon number of 14 or more and 22 or less; and water, in which a content of the polyoxyethylene mono(2-ethylhexyl) ether having a carbon number of 14 or more and 22 or less is 0.4% by mass or lower based on the total amount of the aqueous ink composition.

Aqueous ink composition and ink jet recording apparatus

A functional layer forming composition is capable of obtaining a stable film forming property when a liquid phase process is used. A method produces a functional layer forming composition. A method produces an organic EL element. An organic EL device and an electronic apparatus are also described. A functional layer forming composition is used when at least one layer in a functional layer containing an organic material is formed by a liquid phase process, and is characterized in that the composition includes a solid component for forming a functional layer, a first aromatic solvent having an electron withdrawing group, and a second aromatic solvent having an electron donating group, and the boiling point of the second aromatic solvent is higher than the boiling point of the first aromatic solvent.

Functional layer forming composition, method for producing functional layer forming composition, method for producing organic EL element, organic EL device, and electronic apparatus

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Matsumoto, Japan

Keisuke Morita