Seiko Epson Corporation

Ken Inoue

Masaaki Ando

Tomoki Shinoda

Yuichi Urabe

Tetsugo Ishida

Ryota Takahashi

Akira Shinoto

Hiromi Saito

Kazushi Arafuka

Shunsuke Kuramata

Sadasumi Uchiyama

Toshiyuki Hirase

Provided is a method of controlling a liquid ejecting device. The liquid ejecting device includes a liquid ejecting unit configured to eject a liquid containing an inorganic pigment from a nozzle provided at a nozzle surface, a wiper unit including a band-like member configured to absorb the liquid and a pressing unit configured to move the band-like member in a first direction, and a wiper moving unit configured to move the wiper unit in a second direction opposite to the first direction to wipe the nozzle surface using the band-like member. The method includes performing first wiping in which, to wipe the nozzle surface, the wiper moving unit moves the wiper unit at a first velocity while the pressing unit moves the band-like member at a first velocity.

Method of controlling a liquid ejecting device and liquid ejecting device

A liquid discharge apparatus includes a liquid discharge head, a supply path that supplies a liquid from a liquid supply source to the liquid discharge head, a pump configured to suck and exhaust air, an air suction path in communication with an air suction side of the pump, an air exhaust path in communication with an air exhaust side of the pump, a first storage portion having a portion formed of a flexible wall that is flexible, a first air chamber provided on a side opposite to the first storage portion across the flexible wall and having at least a portion facing the flexible wall and configured to be displaced, and a first switching portion configured to switch a path coupled to the first air chamber between the air suction path and the air exhaust path.

Liquid discharge apparatus and method for controlling liquid discharge apparatus

There is provided a printing apparatus which performs printing by ejecting ink from a nozzle, including: a wiper blade that abuts on a nozzle surface on which an opening of the nozzle is formed, and moves in a first direction to wipe the ink adhering to the nozzle surface; and a cleaner that abuts on the moving wiper blade and scrapes off the ink adhering to the wiper blade, in which the wiper blade includes a blade member which protrudes in a second direction which is substantially orthogonal to the first direction, and in which the cleaner includes a scraping member which protrudes in a third direction which is a direction opposite to the second direction.

Printing apparatus and control method

A liquid supply mechanism includes a sub-tank that supplies liquid to a liquid ejection head and a liquid replenishing mechanism that suctions liquid from a main tank into the sub-tank. The liquid replenishing mechanism has a diaphragm, a biasing member, and a drive member. The diaphragm has a movable portion and a mounting portion and closes one end of a liquid container chamber provided on the sub-tank. The biasing member biases the diaphragm in a first direction in which a volume of the liquid container chamber is decreased. The drive member pulls the diaphragm in a second direction in which the volume of the liquid container chamber is increased. The movable portion of the diaphragm can move in the first direction and the second direction. The movable portion has a first portion, which is flexible, and a second portion that retains its shape when the liquid container chamber is pressurized.

Liquid supply mechanism and liquid ejecting apparatus

An inkjet printerhas an ink pathcommunicating with a printhead, and a choke unitfor closing the ink path. The choke unitincludes a diaphragm valvethat is part of the wall of the ink path, a disc moving mechanism, and a drive motoras the drive source. The disc moving mechanismmoves the diaphragm valvebetween a closed-channel positionA in contact with an opposite wall part (bottomof the cavity) of the wall opposite the diaphragm valve, and an open-channel positionB separated from this opposite wall part. The disc moving mechanismis located outside the ink path

Inkjet printer

A printing head moving mechanism is configured to reciprocate a carriage equipped with a printing head between a printing position facing a recording medium and a retracted position retracted outside a printing region of the recording medium. In the printing position, the carriage is disposed at a downstream side of a transporting roller which is configured to transport the recording medium in a transporting direction of the recording medium. In the retracted position, at least a portion of the carriage is disposed at an upstream side of the transporting roller in the transporting direction of the recording medium. The carriage is configured to move between the printing position and the retracted position without interfering with the transporting roller.

Printer and printing head moving mechanism

An inkjet printer has a valve unit in a moisture supply path that connects a moisture tank and the fluid nozzles of a moisture discharge head. The moisture discharge head has an operating lever for opening and closing the valve unit, and when the cap approaches the moisture discharge head to seal the fluid nozzle faces of the moisture discharge head, a wiper unit that moves with the cap depresses the operating lever and opens the valve unit. Because the valve unit is open while the fluid nozzle faces are sealed by the cap, moisture leakage and backflow are suppressed.

A liquid ejecting device is provided. A main tank stores liquid. A sub-tank includes a variable volume liquid chamber that stores the liquid supplied from the main tank. A head ejects the liquid supplied from the sub-tank. A carriage is movable to reciprocate the sub-tank and the head. A first engagement member is provided in the sub-tank and is movable to expand the volume of the liquid chamber. A second engagement member engages with the first engagement member and moves the first engagement member. The liquid is supplied from the main tank to the sub-tank when the first engagement member is moved by the second engagement member to expand the volume of the liquid chamber.

Liquid ejecting device, printing apparatus and liquid supplying method

The invention provides an electrooptic device that can include a first substrate on which pixel electrodes, first thin film transistors electrically connected to the pixel electrodes, and scanning lines and data lines electrically connected to the first thin film transistors are formed, a second substrate opposing the first substrate and having a common electrode, and an electrooptic substance held between the first substrate and the second substrate. The electrooptical device can further include a switching element for discharging in capacitors constituted by the pixel electrodes on the first substrate, the electrooptic substance, and the common electrode on the second substrate. The invention makes it possible to remove charges from inside the electrooptic device.

Electrooptic device, driving method therefor, electronic device, and projection display device

In a liquid crystal device and a projection display device using the liquid crystal device as a light valve, for the purpose of preventing light incident from opposite the clear viewing direction from affecting the display, in a liquid crystal device ( ), an optical center position ( ) of a microlens ( ) formed on a counter substrate ( ) is offset toward the clear viewing direction as viewed from a center position ( ) of a first opening area ( ) formed for each pixel on the side of an active matrix substrate ( ). For this reason, light incident on the counter substrate ( ) from the direction inclined in the clear viewing direction is emitted from the active matrix substrate ( ); however, light incident from the direction inclined opposite to the clear viewing direction that causes the degradation of contrast is not emitted from the active matrix substrate ( ) and does not affect the display.

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Shiojiri, Japan

Ken Inoue