Seiko Epson Corporation

Tsubaki Seiko Inc.

Yukihiro Hanaoka

Atsushi Nishioka

Manabu Yamada

Hiroyuki Nakayama

Kazuhiko Sato

Tsutomu Yamazaki

Koji Yamada

Seiji Mochizuki

Masaru Kumagai

Chikao Tezuka

Takahiro Naka

Kazuhiko Hara

Eiichiro Watanabe

Toshiro Murayama

Hitoshi Fukushima

Tatsuya Seshimo

Akira Takagi

Satoshi Yoda

Toshio Kumagai

Izumi Nozawa

Kunio Tabata

Noritaka Ide

Masahiro Minowa

Kazuhisa Kawakami

Chiyoshige Nakazawa

Masahiro Isono

Hitoshi Hayakawa

Kenichiro Arai

Hironori Maekawa

Katsuko Aoki

Dai Nozawa

Takao Yamamoto

Koki Hirata

Toshio Nakata

Tsuyoshi Tomii

Shun Katsuie

Shigeo Sugimura

Daiki Tatsuta

Tomoyuki Miyazawa

Takuya Okina

Takeshi Endo

Rika Tanimoto

Toshihiko Yokoyama

Atushi Nishioka

A liquid ejection system includes a first head unit and a second head unit. The first head unit includes a first determining circuit that determines whether a first power supply voltage is normal, a first drive circuit that outputs a first drive signal based on the first power supply voltage, and a first ejecting head that ejects liquid The second head unit includes a second determining circuit that determines whether a second power supply voltage is normal, a second drive circuit that outputs a second drive signal based on the second power supply voltage, and a second ejecting head that ejects liquid When the first determining circuit determines that the first power supply voltage is not normal, or when the second determining circuit determines that the second power supply voltage is not normal, the first ejecting head and the second ejecting head stop ejecting the liquid.

Liquid ejection system

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 liquid ejecting apparatus includes a first liquid ejecting head configured to eject a liquid to an ejection direction, a sub-carriage that holds the first liquid ejecting head, and a carriage that holds the sub-carriage. The sub-carriage includes: a first member that is thermally conductive and holds the first liquid ejecting head; and a heating section provided in the first member. The first liquid ejecting head includes a first side wall facing the first member. The first member is located between the heating section and the first side wall when viewed in the ejection direction.

Liquid ejecting apparatus and sub-carriage

A liquid ejecting system includes a liquid ejecting head having a nozzle ejecting liquid, a supply channel communicating with the nozzle, and a recovery channel communicated with the nozzle, and circulates the liquid in the liquid ejecting head through the supply channel and the recovery channel. The supply channel includes a pressurizing section and a first buffer mechanism disposed between the nozzle and the pressurizing section. The recovery channel includes a decompression section and a second buffer mechanism disposed between the nozzle and the decompression section. The first buffer mechanism is configured to increase a buffer capacity as the supply channel is pressurized. The second buffer mechanism is configured to reduce a buffer capacity as the recovery channel is decompressed.

Liquid ejecting system

A liquid ejecting apparatus includes: a liquid ejecting head including a liquid chamber which communicates with a nozzle; a supply flow path having a first end connected to a liquid supply source and a second end connected to the liquid chamber; a first circulation flow path having a first end connected to the liquid chamber and a second end connected to a first connecting section in the supply flow path; a supply pump provided in the supply flow path; a first pressure regulating valve provided between the first connecting section and the liquid ejecting head in the supply flow path; a second pressure regulating valve provided in the first circulation flow path; a circulation pump provided in the first circulation flow path and configured to circulate the liquid in a downstream direction; and an opening mechanism configured to forcibly open the first pressure regulating valve.

Liquid ejecting apparatus, liquid filling method, and air bubble discharging method

A liquid ejecting apparatus includes a liquid ejecting head that ejects liquid through a nozzle, a supply flow path that supplies liquid from a liquid container containing liquid to the liquid ejecting head, a liquid chamber provided in a buffer chamber disposed in the supply flow path, the liquid chamber being configured to change in volume, a liquid feeding unit of a reversible type disposed in the supply flow path between the liquid container and the liquid chamber, a control portion that controls driving of the liquid feeding unit, and a suction unit that suctions liquid through the nozzle. The control portion controls the liquid feeding unit to perform reverse feeding of the liquid from the liquid chamber to the liquid container before the suction unit suctions the liquid through the nozzle.

Liquid ejecting apparatuses

A liquid ejecting apparatus includes a liquid ejecting head having nozzles and an opening surface through which the nozzles are opened, the liquid ejecting head being configured to eject liquid from the nozzles, a supply flow path configured to supply the liquid to the liquid ejecting head, a pressurizing mechanism that can pressurize the inside of the supply flow path, an opening/closing mechanism that can open and close the supply flow path, and a control unit that controls operations of the liquid ejecting head, the pressurizing mechanism, and the opening/closing mechanism.

Liquid ejecting apparatus

A recording apparatus includes a transportation mechanism that supports and transports a recording medium by a support surface; a recording head that is disposed in a region facing the support surface and is capable of ejecting an ink from a nozzle provided on an ink ejection surface to the recording medium; a suction unit that is capable of sucking the ink inside the nozzle; and a wiping unit that is provided as a separate body from the suction unit and is capable of wiping the ink ejection surface. The recording head is moved in a direction to be separated from the support surface when sucking the ink inside the nozzle. The suction unit is moved to a suction position facing the ink ejection surface of the recording head. The suction unit is moved below the recording head when wiping the ink ejection surface.

Recording apparatus

A recording apparatus includes a transportation mechanism that supports and transports a recording medium by a support surface; a recording head that is disposed in a region facing the support surface and is capable of ejecting an ink from a nozzle provided on an ink ejection surface to the recording medium; a suction unit that is capable of sucking the ink inside the nozzle; and a wiping unit that is provided as a separate body from the suction unit and is capable of wiping the ink ejection surface. At least one of the suction unit and the wiping unit is provided on a farther downstream side of the recording medium in a transportation direction than the recording head and a gap between the one and the support surface is wider than a gap between the ink ejection surface and the support surface.

A printer has two separate movable blades, a stationary blade, and a movable blade drive mechanism for driving the movable blades against the stationary blade. Such mechanism may link and drive the movable blades to cut the roll paper against the stationary blade such that one movable blade leads and the other follows. The printer may further include a main frame with a roll paper compartment and a printing mechanism for printing on the roll paper, a cover frame movably connected to the main frame and having an openable cover for the roll paper compartment, a movable blade frame disposed to the main frame for supporting the movable blades with the blade tips in opposition, and a stationary blade frame disposed to the cover frame for supporting the stationary blade in a position substantially transverse to the paper transportation path during cutting.

Paper cutting device and a printer with a paper cutting device

An ink tank, which is mountable on an ink jet printer, includes an ink outlet adapted to supply ink stored in the ink tank to the ink jet printer through the outlet; an air communicating hole configured to introduce air into the ink tank through the hole in accordance with an amount of the ink supplied to the ink jet printer from the ink tank; a passage communicating with the ink outlet; a prism formed in the ink tank and adapted to detect whether a remaining amount of the ink in the ink tank is below a predetermined level or not; a filter disposed between the prism and the passage; and an ink chamber connected to an upstream opening of the passage. The prism and the filter are disposed in the ink chamber.

Ink tank and ink jet printer

A first movable blade and a second movable blade cooperate as part of a cutter drive mechanism to cut roll paper in conjunction with a fixed blade. A gear trainhas a first gearthat rotates when drive power from the cutter motoris input thereto, and a second gearto which rotation of the first gearis transferred, causing the second gearto turn. A first eccentric pinengaging the first movable bladeis disposed at an eccentric position to the first gearand a second eccentric pinengaging the second movable bladeis disposed at an eccentric position to the second gearThe first movable bladehas a first guide channelregulating the cutting operation of the first movable bladeon the first blade pointside, and the first guide channeland the first eccentric pintogether render a first opposing camThe second movable bladehas a second guide channelregulating the cutting operation of the second movable bladeon the second blade pointside, and the second guide channeland the second eccentric pintogether render a second opposing cam

Paper cutting device and printer having a paper cutting device

A printer has a main frame with a roll paper compartment for storing roll paper and a printing mechanism for printing on the roll paper; a cover frame movably connected to the main frame and having an openable cover for the roll paper compartment; a movable blade frame disposed to the main frame for supporting first and second movable blades with the blade tips in opposition; a stationary blade frame disposed to the cover frame for supporting a stationary blade in a position substantially transverse to the paper transportation path during cutting; and a movable blade drive mechanism for linking and driving the first and second movable blades to cut the roll paper in a scissor action against the stationary blade and such that one movable blade leads and the other movable blade follows, with the movable blades disposed such that the paths of the tips overlap during cutting.

A carriage guide mechanism for a printer enables using plural rolling bearings to move a carriage along a guide shaft with no play or vibration. The carriage bearing units of the printer carriage guide mechanism have three rolling bearings each that hold the guide shaft from three directions. The outer ring of each rolling bearing makes line contact with the outer ring roller surfaces, which each face a different direction and are formed on the guide plate of the guide shaft, and contact therebetween is maintained by the urging force of a flat spring. Because chatter and vibration, particularly play and vibration around the center axis of the guide shaft, can be prevented when the carriage moves, a drop in print quality due to vibration of the printhead caused by carriage chatter or vibration can be reliably prevented.

Carriage guide mechanism and a printer

A liquid for ejection includes a bio-specimen, and at least one kind of first compounds expressed by Formula (1), wherein, in Formula (1), m&#x2267;8, and 8&#x2266;n&#x2266;18.

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Nagano, Japan

Yukihiro Hanaoka