Seiko Epson Corporation

Masato Murayama

Ryoji Fujimori

Takeshi Yoshida

Kaoru Koike

Keiichiro Yoshino

Yuji Aoki

Toru Saito

Tomohiro Sayama

Masakazu Ohashi

Atsushi Yoshida

Satoru Kobayashi

Masashi Kamibayashi

Koji Harada

Yoshihiro Watanabe

Tsuyoshi Hayashi

Kazushi Arafuka

Koji Ito

Hiroki Nakane

Keiji Matsumoto

Hiroshi Mukai

Masako Fukuda

Shoki Kasahara

Hiroki Matsuoka

Akira Shinoto

Toshihiko Wakabayashi

Masanobu Yamaguchi

Kazuto Aoki

Mizuki Yokouchi

Masako Fukada

A pretreatment device includes: a medium support portion configured to support a medium that is transported; a pretreatment-agent ejecting portion configured to eject a pretreatment agent; an absorbing-member support portion configured to support an absorbing member between the medium and the pretreatment-agent ejecting portion in a direction in which the pretreatment agent is ejected, the absorbing member being configured to absorb the pretreatment agent ejected from the pretreatment-agent ejecting portion; and a pressing unit configured to press, toward the medium, the absorbing member to which the pretreatment agent is ejected from the pretreatment-agent ejecting portion.

Pretreatment device, method of pretreatment for pretreatment device, and printing apparatus

A liquid ejecting apparatus including: a liquid ejecting portion configured to eject a liquid from a nozzle disposed in a nozzle surface; a wiping mechanism configured to perform a wiping operation of wiping the nozzle surface by moving a strip-shaped member configured to absorb the liquid relative to the nozzle surface in a state in which the strip-shaped member is in contact with the nozzle surface; and a control portion configured to perform a pre-wiping operation of moving the strip-shaped member relative to the nozzle surface at a speed higher than a speed for the relative movement during the wiping operation in a state in which the strip-shaped member is not in contact with the nozzle surface and is configured to be brought into contact with the liquid adhering to the nozzle surface, prior to the wiping operation of wiping the nozzle surface with the strip-shaped member.

Liquid ejecting apparatus and maintenance method for liquid ejecting apparatus

A liquid ejecting apparatus includes a wiping mechanism that includes a wiping portion configured to move in a wiping direction, in which a first nozzle surface and a second nozzle surface each provided with nozzles of a liquid ejecting portion are aligned, and to wipe the first nozzle surface and the second nozzle surface, and an isolation region in which the wiping portion is not brought into contact with the first nozzle surface and the second nozzle surface when a gap between the first and second nozzle surfaces and the wiping portion in an ejecting direction of liquid from the nozzles is a contact interval at which the first nozzle surface and the second nozzle surface are wiped is provided between the first nozzle surface and the second nozzle surface in the wiping direction.

A liquid ejecting apparatus includes a liquid ejecting section from which liquid is ejected. A return passage has a first end connected to a supply passage at a first location and a second end connected to the supply passage at a second location. The second location is positioned closer to the liquid ejecting section than the first location. The return passage and the supply passage constitute a circulating passage. A pump can cause fluid to flow through the circulating passage. A replaceable filter unit is a portion of the return passage. A discharge passage through which the fluid is discharged to the outside is connected to the return passage. An inflow controller can suppress external fluid from entering the discharge passage.

Method of discharging fluid from liquid ejecting apparatus

A liquid ejecting apparatus includes a liquid ejecting unit that performs printing on a target by ejecting liquid, which is supplied from a liquid supply source, from a plurality of nozzles; and a maintenance section that performs maintenance processing of causing the liquid to be discharged from the nozzles. Based on print information for performing printing on the target, in a case where printing satisfying a setting condition presumed such that a staying time of the liquid staying in a liquid path between the liquid supply source and the nozzles during printing is long is performed, a discharge amount of the liquid to be discharged during the maintenance processing that is performed before printing is set to be larger than a discharge amount of the liquid in a case where printing not satisfying the setting condition presumed such that the staying time is short is performed.

Liquid ejecting apparatus and maintenance method for the same

Liquid ejecting apparatus and method of discharging fluid from liquid ejecting apparatus

A liquid ejecting apparatus includes a liquid ejector that ejects a liquid, a liquid supply flow path that connects a liquid supply source and the liquid ejector, a plurality of branch flow paths provided in the liquid supply flow path, filters that are disposed separately in each of the branch flow paths, and a flow path opening/closing mechanism that opens and closes the branch flow paths.

Method of discharging fluid in a liquid ejecting apparatus

Liquid ejecting apparatus and liquid supplying apparatus

A liquid ejecting apparatus includes a liquid ejecting unit which has an opening face to which nozzles are open; a wiping member which can wipe off the opening face; and a movement mechanism which relatively moves the liquid ejecting unit and the wiping member in a wiping direction, in which as a wiping operation in which wiping of the opening face is performed by relatively moving the liquid ejecting unit and the wiping member at a speed, and it is possible to execute a movement operation in which the liquid ejecting unit and the wiping member are caused to relatively move in a state in which the liquid ejecting unit and the wiping member do not come into contact with each other at a speed higher than the speed.

Liquid ejecting apparatus and maintenance method

A liquid ejecting apparatus includes a liquid ejecting head that ejects a liquid from a nozzle toward a target which is positioned away from a nozzle forming surface where the nozzle is formed; a wiping member that is capable of wiping the nozzle forming surface; a movement mechanism that relatively moves the liquid ejecting head and the wiping member when wiping is carried out; and a control portion that controls the movement mechanism so as to cause a relative moving velocity between the liquid ejecting head and the wiping member to be lower when wiping is carried out in a case where the liquid is ejected at a second distance of which an opposing distance between the nozzle forming surface and the target is longer than a first distance compared to a case where the liquid is ejected at the first distance of the opposing distance.

An ink-jet recording apparatus includes a recording head having a plurality of nozzles through which an ink composition containing an inorganic pigment is ejected, a nozzle surface having nozzle orifices, and a liquid-repellent film disposed on the nozzle surface; an absorbing member that absorbs the ink composition from the nozzle orifices and the nozzle surface; and an actuating mechanism including a pressing member that presses the absorbing member and the nozzle surface relative to each other with a force of 50 to 500 gf. The actuating mechanism moves at least one of the absorbing member and the recording head relative to the other to perform a cleaning operation in which the ink composition is removed from the nozzle surface with the absorbing member. The absorbing member contains an impregnation liquid during the cleaning operation.

Ink-jet recording apparatus

A liquid ejecting apparatus includes a liquid ejecting head, an ink supply tube that supplies ink to the liquid ejecting head, a pressure control valve that opens as a result of depressurization on the liquid ejecting head side, a check valve provided upstream from the pressure control valve, an ink circulation tube that is connected at both ends to the ink supply tube between the pressure control valve and the check valve, and a tube pump provided in the ink circulation tube; in this configuration, by providing at least one of an ink return tube and a liquid reservoir portion that is capable of holding liquid in a liquid flow channel in a pressurized state, a rise in pressure within a circulating flow channel caused by pump operations can be suppressed.

Liquid ejecting apparatus

Growing community of inventors

Matsumoto, Japan

Masato Murayama