Seiko Epson Corporation

Daiki Tatsuta

Osamu Murayama

Ken Yamagishi

Yoji Takahashi

Junya Suzuki

Hiroyuki Hagiwara

Yukihiro Hanaoka

Masaaki Ando

Toshiro Murayama

Kaoru Koike

Ryoji Fujimori

Masahiko Sato

Takao Yamamoto

Masumi Hayakawa

A first valve mechanism is a valve mechanism provided in a flow path coupled to a liquid ejecting head that ejects a liquid, and including a valve that opens/closes the flow path, a first communication liquid chamber that communicates with the flow path, and a first pressure receiving body that converts a pressure difference between a pressure of the first communication liquid chamber and a reference pressure into an operating force of the valve, in which a threshold pressure of the first communication liquid chamber for determining opening/closing of the valve is variable.

Valve mechanism and liquid ejecting system

A printing apparatus includes a head unit having a support portion configured to support a plurality of heads capable of discharging a droplet in a discharge direction, and a carriage on which the head unit is removably mounted from upstream in the discharge direction, wherein the carriage has a bottom formed with an opening from which a nozzle surface of the head for discharging the droplet is exposed, the support portion is provided with at least one protruding portion protruding from a bottom surface of the support portion in the discharge direction, and the bottom is provided with an insertion hole through which the at least one protruding portion is inserted, and a biasing member biasing the support portion in an intersecting direction intersecting with the discharge direction in a state where the at least one protruding portion is inserted through the insertion hole.

Printing apparatus and carriage

A liquid ejecting unit includes: a liquid ejecting head configured to eject a liquid; a holding portion holding the liquid ejecting head; a coupling member; and a first fixing member fixing the liquid ejecting head to the holding portion, in which the coupling member is provided with a first coupling portion and a first through-hole, the liquid ejecting head is provided with a second coupling portion that is configured to be coupled to the first coupling portion, and the first fixing member passes through the first through-hole in a state in which the first coupling portion and the second coupling portion are coupled to each other.

Liquid ejecting apparatus and liquid ejecting unit

A liquid discharge unit includes a liquid discharge head having a first joint portion and configured to discharge a liquid in a first direction, a liquid supply section having a second joint portion joined to the first joint portion to supply the liquid to the liquid discharge head, and disposed in a second direction opposite to the first direction relative to the liquid discharge head, and a support section which is formed together with the liquid discharge head, and to which the liquid discharge head is fixed. With respect to the first direction, a position at which the liquid supply section is fixed to the support section is located in the second direction with respect to a position at which the first joint portion and the second joint portion are joined to each other.

Liquid discharge unit and liquid discharge apparatus

A liquid ejecting unit includes: a liquid ejecting head configured to eject a liquid; a flow channel member that is attached to the liquid ejecting head and that supplies the liquid to the liquid ejecting head; and an electric coupling member configured to supply a signal to the liquid ejecting head, in which the electric coupling member has a first electric coupling portion, the liquid ejecting head has a second electric coupling portion electrically coupled to the first electric coupling portion, and the flow channel member restricts the electric coupling member from moving in a direction in which the first electric coupling portion is removed from the second electric coupling portion.

Liquid ejecting unit and liquid ejecting apparatus

A liquid ejecting unit includes: a liquid ejecting head; and a coupling member coupled to the liquid ejecting head, in which the liquid ejecting head has a first-coupling portion and a second-coupling portion, the liquid ejecting unit further includes: a first-attachment portion provided in a first-position of the coupling member; a second-attachment portion provided in a second-position of the coupling member, the second position being different from the first position; a first-elastic body; and a second-elastic body, and the first-elastic body biases the first-attachment portion or the first-coupling portion in a state in which the first-attachment portion is in contact with the first-coupling portion and the second-elastic body biases the second-attachment portion or the second-coupling portion in a state in which the second-attachment portion is in contact with the second-coupling portion, so that the coupling member is coupled to the liquid ejecting head.

A liquid discharge apparatus includes a filter chamber that is provided in a flow path that supplies liquid to a liquid discharge unit, a filter that partitions the filter chamber into an upstream side chamber to which the liquid is supplied and a downstream side chamber that communicates with the liquid discharge unit, a storage chamber that is arranged vertically above the filter chamber and is connected to a branch of the flow path on the upstream side of the upstream side chamber of the filter chamber, and a pump that supplies the liquid to the flow path.

Liquid discharge apparatus and driving method of liquid discharge apparatus

A liquid ejecting apparatus includes a liquid flow path which communicates with a nozzle which ejects liquid; a vacuum degassing chamber for removing air bubbles from liquid by depressurizing a part of the liquid flow path; a gas flow path which communicates with the vacuum degassing chamber; a pressurizing chamber which communicates with the gas flow path; and a pump which communicates with the vacuum degassing chamber and the pressurizing chamber through the gas flow path, in which the pump is driven by a sequence selected from a plurality of sequences, and the plurality of sequences include a plurality of depressurizing sequences in which the vacuum degassing chamber is depressurized so that an average pressure of the vacuum degassing chamber becomes different, and a pressurizing sequence in which the pressurizing chamber is pressurized.

Growing community of inventors

Matsumoto, Japan

Daiki Tatsuta