Seiko Epson Corporation

Kenichiro Matsuo

Hiroki Miyajima

Kei Yamaguchi

A liquid ejecting apparatus includes a liquid ejecting head that has an ejection surface including a first nozzle row configured to eject a first ink and a second nozzle row configured to eject a second ink. The liquid ejecting head is configured to be held in a first posture in which the ejection surface is inclined with respect to a horizontal plane. A dynamic surface tension of the second ink is higher than a dynamic surface tension of the first ink. In the first posture, the first nozzle row is positioned above the second nozzle row with respect to a gravity direction.

Liquid ejecting apparatus and liquid ejecting head

A maintenance method for a liquid discharging apparatus including a discharging portion that discharges liquid, the maintenance method includes acquiring first viscosity information related to viscosity of the liquid inside the discharging portion, discharging a first amount of the liquid from the discharging portion, acquiring second viscosity information related to viscosity of the liquid inside the discharging portion, and discharging a second amount of the liquid based on the first viscosity information and the second viscosity information, from the discharging portion.

Maintenance method of liquid discharging apparatus

A liquid ejecting apparatus includes a plurality of ejecting unit groups each including nozzles configured to eject liquid. The ejecting unit group configured to eject a liquid to be used in the printing is referred to as a to-be-used ejecting unit group. The ejecting unit group configured to eject a liquid not to be used in the printing is referred to as the non-use ejecting unit group. In a print mode with a non-use nozzle group in which any of the plurality of kinds of liquids is not used, the driving elements of the to-be-used ejecting unit group is supplied with the in-printing micro-vibration pulse in a period without ejection of the ink, and the driving elements of the non-use ejecting unit group is not supplied with the micro-vibration pulse even in the period without ejection of the ink.

Liquid ejecting apparatus and method of controlling liquid ejecting apparatus

A flow passage structure includes a flow passage member that constitutes a portion of a wall surface of a liquid storage chamber; a flexible film that is laminated on the flow passage member and constitutes a portion of the wall surface of the liquid storage chamber; a sealing body that is laminated on a side opposite to the flow passage member with the flexible film interposed therebetween and forms a space in which the flexible film is exposed; communication passages that are formed in a region around the liquid storage chamber in the sealing body and causes the space to communicate with an atmosphere in a case where the sealing body is seen in a plan view from a direction in which the flow passage member and the flexible film are laminated; and a support portion that supports the flexible film in the communication passage.

Liquid ejecting head and flow passage structure

A compliance plate includes a flexible film that forms a portion of a wall surface of a liquid storage chamber that is supplied with a liquid that is to be discharged from a nozzle, a support plate that supports the flexible film at an opposite side of the flexible film to the liquid storage chamber and that has an opening portion that exposes the flexible film, and a plurality of regions that include a first region and a second region that have a compliance function, the first region and the second region having mutually different characteristic vibration periods.

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Matsumoto, Japan

Kenichiro Matsuo