Seiko Epson Corporation

Yuichi Urabe

Hisashi Sato

Manabu Yamada

Toshio Nakata

Kazushi Arafuka

Kazuyuki Fujioka

Takeshi Komaki

Yoshiaki Kishii

Hitotoshi Kimura

Ken Inoue

Kentaro Murakami

Hiromichi Nakashima

Shinji Hirata

Yuki Shiohara

Shuji Funada

Eri Tanaka

Munechika Otsuru

Sawako Tsujimura

Akihiro Furuya

A liquid circulation mechanism includes a supply flow path making a liquid supply source and a liquid discharging head communicate with each other and a collection flow path making the liquid discharging head and a connection portion of the supply flow path communicate with each other, in which a branch portion, a plurality of flow paths branched at the branch portion, and a merging portion, in which the plurality of flow paths are merged, are provided in at least one of the supply flow path and the collection flow path. Pressure adjustment portions, which are provided in the plurality of flow paths and open the flow paths when a pressure on the liquid discharging head side is equal to a predetermined pressure, have different the predetermined pressures for opening the flow paths in the plurality of flow paths.

Liquid circulation mechanism, liquid circulation device, and liquid discharging apparatus

A liquid circulation mechanism includes a first storage portion configured to store liquid to be supplied to a liquid discharging head, a second storage portion configured to store the liquid collected from the liquid discharging head, a third storage portion configured to store the liquid between the second storage portion and the first storage portion, a first check valve allowing flow of the liquid from the second storage portion to the third storage portion while regulating flow of the liquid from the third storage portion to the second storage portion, in the second collection flow path, and a second check valve allowing flow of the liquid from the third storage portion to the first storage portion while regulating flow of the liquid from the first storage portion to the third storage portion, in the third collection flow path.

A liquid ejecting apparatus includes: a head that ejects a liquid; a curing portion that cures the liquid by emitting energy to the liquid; and a waste-liquid collecting portion that collects the liquid as waste liquid, in which the waste-liquid collecting portion includes an absorber that absorbs the liquid from the head, a first rotational shaft that holds an unused portion of the absorber, and a second rotational shaft that holds a used portion of the absorber, and the curing portion emits the energy to the liquid absorbed by the absorber.

Liquid ejecting apparatus and waste-liquid collecting method of liquid ejecting apparatus

A liquid ejecting apparatus includes a liquid ejecting head configured to eject liquid from a nozzle onto a medium to perform printing, a liquid accommodating unit configured to receive, via an opening, the liquid ejected by empty discharging that ejects the liquid from the liquid ejecting head separately from the printing, a cover movable to a closed position where the opening of the liquid accommodating unit is covered and an open position where the opening is opened, and a detection unit configured to detect the cover positioned at the closed position or the open position.

Liquid ejecting apparatus, method for controlling liquid ejecting apparatus

A liquid ejecting apparatus including a liquid ejecting portion that ejects a liquid, a liquid supply flow path that supplies the liquid accommodated in a liquid supply source to the liquid ejecting portion, a storage portion that is provided in the liquid supply flow path and that stores the liquid, a pressure mechanism that changes a volume of the storage portion by making pressure act thereon, a liquid filling mechanism that fills the liquid inside the liquid supply source into the liquid supply flow path, and a control portion that fills the liquid into the liquid supply flow path while the volume of the storage portion is, by making pressure act on the flexible portion, made smaller than when the pressure does not act on the flexible portion, and after the filling, ends a state in which the pressure is made to act on the flexible portion.

Liquid ejecting apparatus and method of filling liquid in liquid ejecting apparatus

A liquid reservoir unit includes a reservoir portion, an outflow portion disposed at a position near a first end of the reservoir portion, and an inflow portion disposed at a position near the first end of the reservoir portion. The outflow portion includes an outflow opening opened to an interior of the reservoir portion, and the inflow portion includes an inflow opening opened to the interior of the reservoir portion. The outflow opening and the inflow opening are located at different positions in a width direction which is a lengthwise direction of the reservoir portion when the reservoir portion is viewed from the first end, and also located at different positions in a depth direction from the first end toward a second end on the opposite side to the first end.

Liquid reservoir unit, liquid ejecting apparatus, and maintenance method for liquid ejecting apparatus

A liquid ejecting apparatus includes a liquid ejecting head provided with a nozzle and a cap that executes capping for forming a first space to which the nozzle is open, in a surrounding manner. The cap includes a capping member that is provided with a suction hole and an atmosphere communicating hole which is configured to allow an inside of the cap to communicate with an outside, a liquid absorber that is disposed inside the capping member, and a reception member that is disposed inside the capping member so as to form a second space between the liquid absorber and the reception member. The second space is positioned closer to a side of the liquid ejecting head than to the liquid absorber in a posture of capping, and the atmosphere communicating hole is open to the second space.

Liquid ejecting apparatus and cap

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

An inkjet printerhas an elastic ink packthat holds ink, and an ink supply mechanismthat pressurizes the ink packand supplies ink to the ink pathside. The ink supply mechanismhas a pressure pump; a remaining ink monitorthat watches if the ink in the ink packhas dropped to a specific remaining ink level; a first pressure control unitthat drives the pressure pumpuntil the pump pressure reaches a preset first set pressure Pwhen the remaining ink has not reached the specific remaining ink level; and a second pressure control unitthat drives the pressure pumpuntil the pump pressure reaches a second set pressure Pthat is higher than the first set pressure Pwhen the remaining ink has reached the specific remaining ink level.

Ink supply control method for an inkjet printer, and an inkjet printer

A fluid discharge device, a printing device, and a control method for a fluid discharge device enable accurately detecting an empty fluid state and suppressing fluid waste. An inkjet printerhas an ink cartridge in which ink is stored, a subtank that draws ink from the ink cartridge, an inkjet head to which ink is supplied from the subtank, a movable carriage on which the inkjet head and subtank are mounted, an ink pump unit that draws the ink supplied to the inkjet head from the ink cartridge by movement of the carriage, and a control unit that determines if ink is in the ink cartridge based on the load required to move the carriage.

Fluid discharge device and method of controlling a fluid discharge device

A cartridge assembly includes a plurality of ink cartridges each having a cartridge case that holds ink therein, and at least one connecting member that connects the plurality of ink cartridges together in a connection direction. The ink cartridges connected by the at least one connecting member are movable relative to each other in the connection direction of the ink cartridges.

Ink cartridge assembly, cartridge assembly kit, and printer

An inkjet printerhas an elastic ink packthat holds ink, and an ink supply mechanismthat pressurizes the ink packand supplies ink to the ink pathside. The ink supply mechanismhas a pressure pump; a remaining ink monitorthat watches if the ink in the ink packhas dropped to a specific remaining ink level; a first pressure control unitthat drives the pressure pumpuntil the pump pressure reaches a preset first set pressure P1 when the remaining ink has not reached the specific remaining ink level; and a second pressure control unitthat drives the pressure pumpuntil the pump pressure reaches a second set pressure P2 that is higher than the first set pressure P1 when the remaining ink has reached the specific remaining ink level.

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Shiojiri, Japan

Yuichi Urabe