Brother Kogyo Kabushiki-kaisha

Nec Corporation

Taiyo Kagaku Co., Ltd.

Incorporated Administrative Agency, National Agriculture and Bio-oriented Research Organization

City of Nagoya

Hideki Hayashi

Taisuke Mizuno

Keita Sugiura

Keita Hirai

Masayuki Takata

Yuichi Ito

Atsushi Hirota

Itta Yamada

Toru Kakiuchi

Mikio Ogawa

Yuki Takagi

Jiro Yamamoto

Fumiyuki Nihey

Tatsuo Terakura

Yoshihiko Takase

Genki Hoshino

Naoki Kondo

Rie Joboji

Mami Nanami

Masaki Harada

Kouji Iida

Kazunori Nakano

Kazuaki Okamoto

Kazunori Otobe

Hidenobu Nakao

Mikio Doi

Hiroya Kuroda

There is provided a liquid container including: a pouch and a case. The pouch includes a flexible bag and a spout with a first opening. The case includes a tank to store a liquid flowed through the second opening. The spout is fitted into the case, and the bag is positioned in the tank.

Liquid container and liquid discharge apparatus

There is provided a liquid cartridge including a casing which has front and lower surfaces, a storage chamber, and a supply port. A groove is arranged on the lower surface of the casing. The groove has left and right surfaces and an entrance port. At least one of the right and left surfaces has first and second surfaces. The first surface is directed in one orientation of the front-rear direction and in one orientation of the left-right direction. The second surface is positioned in the other orientation of the front-rear direction as compared with the first surface and is directed in the other orientation of the front-rear direction and in the one orientation of the left-right direction. The groove is configured such that a latch enters the groove.

Liquid cartridge and liquid supply system

A pouch is configured to accommodate one of ink, nozzle cleaning liquid or preserving liquid and is configured to be foldable from an expanded state in which the pouch has a thickness in a first direction to a shrunk state in which the pouch has a planar shape. The pouch includes: a body portion provided with a first edge and a second edge in a second direction orthogonal to the first direction; a gusset formed at an end portion of the body portion in a third direction orthogonal to the first direction and the second direction; and a spout inserting portion formed at one end edge of the gusset in the first direction. The spout inserting portion is formed at a position shifted to the first edge with respect to a center between the first edge and the second edge in the second direction.

Pouch, cartridge, and printer

There is provided a liquid discharge apparatus including: a reservoir configured to store a liquid; a head in which a nozzle is opened; a liquid circulator including a negative pressure pump, the liquid circulator being configured to circulate the liquid between the reservoir and the nozzle; a negative pressure regulating valve configured to regulate communication between a gas layer of the reservoir and an atmosphere; and a controller configured to perform: obtaining a nozzle pressure in an area, of the liquid circulator, near the nozzle; and controlling the negative pressure regulating valve to open, in response to the nozzle pressure being less than a first threshold value that is a negative value and greater than a second threshold value that is less than the first threshold value.

Liquid discharge apparatus

A liquid ejection head, including: a first head unit; a second head unit shifted with respect to the first head unit in both of a first direction in which nozzles of the head units are arranged and a second direction orthogonal to the first direction and disposed so as to overlap the first head unit in the second direction; and a first wiring member having flexibility and drawn from the second head unit in the second direction toward the first head unit, wherein the first wiring member includes a large-width portion on which a drive circuit is mounted and a small-width portion having a width in the first direction smaller than a width of the large-width portion in the first direction, and wherein the small-width portion passes through a space existing next to the first head unit in the first direction and extends in the second direction.

Liquid ejection head

A liquid jetting apparatus jetting a liquid onto a recording medium conveyed in a first direction includes head units arranged in a second direction orthogonal to the first direction. One head unit includes nozzle chips; one nozzle chip has a nozzle arrangement area wherein nozzles are aligned in a third direction crossing the first and second directions. The nozzle chip is arranged to be shifted relative to another nozzle chip in a direction crossing the first and second directions and different from the third direction. The head unit has a first overlapping portion wherein nozzle arrangement areas of first and second nozzle chips included in the nozzle chips partially overlap with each other in the first direction. The liquid jetting apparatus has a second overlapping portion wherein nozzle arrangement areas of third and fourth nozzle chips included in the head units partially overlap with each other in the first direction.

Liquid jetting apparatus capable of jetting a plurality of kinds of liquid

A liquid discharge apparatus includes an individual flow passage member; and a common flow passage member joined to the individual flow passage member in a first direction. The individual flow passage member has nozzle groups formed on a surface on a side opposite to the common flow passage member and connecting hole groups formed on a surface on a side of the common flow passage member; and the common flow passage member has manifold flow passages corresponding to the connecting hole groups respectively. Each of the nozzle groups includes nozzles aligned in a second direction orthogonal to the first direction; and each of the connecting hole groups includes connecting holes aligned in the second direction and connected to the nozzles respectively. Each of the manifold flow passages extends in the second direction and is connected to the nozzles via the connecting holes.

Liquid discharge head

A liquid ejection head includes a nozzle surface having a plurality of nozzles, a channel structure stacked on the nozzle surface in a stacking direction, and a supply channel structure formed of a material having a lower thermal conductivity than a material of the channel structure. The channel structure has a liquid ejection channel communicating with the nozzles. The supply channel structure has a supply channel communicating with the liquid ejection channel. The supply channel structure has a covering portion covering at least a portion of an end surface on a side of the channel structure in a width direction orthogonal to the stacking direction.

A liquid ejection head includes a supply channel structure and a heater. The supply channel structure has a supply channel configured to allow liquid to flow therefrom to ejection channels that are configured to lead liquid to nozzles aligned in a first direction. The heater is configured to heat liquid. Assuming that a side of the liquid ejection head, in which the nozzles are provided, is defined as a lower side of the liquid ejection head, the heater is disposed above the supply channel structure.

A liquid ejection head includes a flow channel structure, a supply channel structure, a piezoelectric element, a sealing substrate, and a heater. The flow channel structure defines an ejection channel including an individual channel and a manifold. The individual channel has a nozzle and a pressure chamber in which pressure is applied to liquid for causing the liquid to be ejected from the nozzle. The supply channel structure defines a supply channel configured to allow the liquid to flow therethrough to the ejection channel. The piezoelectric element is positioned on an upper surface of the flow channel structure and facing the pressure chamber via a vibration plate. The sealing substrate is made of a material having a higher thermal conductivity than the supply channel structure. The sealing substrate surrounds the piezoelectric element on the flow channel structure to seal the piezoelectric element. The heater is disposed at the sealing substrate.

There is provided a printer including: a casing defining an internal space; a conveyor; a head; a tank, a first channel communicating the tank and the head with each other; a first pressure gauge; a first pump; a second channel communicating the tank and the head with each other; a second pressure gauge; and a second pump. The internal space includes a first space defined between a first virtual surface and a second virtual surface which are parallel to a conveyance direction and an up-down direction, and a second space which is different from the first space; the head is positioned in the first space; and the tank, the first pressure gauge, the first pump, the second pressure gauge, and the second pump are positioned in the second space.

Printer including liquid discharge head

A liquid discharge head includes: individual channel rows; a common channel; a supply port via which liquid is supplied to the common channel; and a discharge port via which the liquid is discharged from the common channel. Each of the individual channel rows is formed of individual channels aligned in a first direction, each of the individual channels includes a nozzle, and the individual channel rows are arranged in a second direction crossing the first direction. The common channel extends in the first direction, and extends in the second direction over an entire length of an area in which the individual channel rows are arranged. The common channel overlaps with the individual channel rows in a third direction orthogonal to both of the first and second directions, and communicates with the individual channels constructing each of the individual channel rows.

A head includes a plurality of individual channels, a first common channel, and a second common channel. The plurality of individual channels are arranged in a first row in a first direction. The plurality of individual channels are arranged in a second row in a second direction. The first direction and the second direction intersect each other. The first common channel extends in the first direction and is fluidly communicated the plurality of individual channels. The second common channel extends in the first direction. The second common channel is fluidly communicated the plurality of individual channels and overlaps the first common channel in a third direction. The third direction is orthogonal to both the first direction and the second direction.

Head

There is provided a liquid discharge head including: a channel member including individual channels that include nozzles and pressure chambers communicating with the nozzles and at least part of a first common channel communicating with the individual channels; a vibration plate overlapping in a first direction with the channel member and covering the pressure chambers; driving elements placed on a surface of the vibration plate at a side opposite to the pressure chambers in the first direction; and a protection substrate disposed on the surface of the vibration plate, where the driving elements are placed, at the side opposite to the pressure chambers and covering the driving elements, wherein the protection substrate includes a second common channel that is common to the individual channels and the channel member includes a connection channel connecting the individual channels and the second common channel.

Growing community of inventors

Nagoya, Japan

Hideki Hayashi