Canon Kabushiki Kaisha

Samsung Electronics Co., Ltd.

Takeshi Okazaki

Toshio Kashino

Aya Yoshihira

Kiyomitsu Kudo

Hiroki Tajima

Yoshie Asakawa

Masami Ikeda

Makiko Kimura

Tsutomu Abe

Yoshie Nakata

Masahiko Higuma

Hiroyuki Ishinaga

Hiroshi Sugitani

Sadayuki Sugama

Kouichi Omata

Hiromitsu Hirabayashi

Hiroshi Tajika

Noribumi Koitabashi

Yutaka Koizumi

Yuji Akiyama

Kiyomi Aono

Hitoshi Sugimoto

Masao Kato

Masahiko Kubota

Jiro Moriyama

Seiichiro Karita

Kazuaki Masuda

Shuji Koyama

Tadayoshi Inamoto

Fumihiro Gotoh

Hitoshi Tsuboi

Toshihiro Mori

Masaaki Izumida

Jun Kawai

Koichi Omata

Ryo Shimamura

Naohito Asai

Hirotaka Miyazaki

Shunichi Watanabe

Yoshiyuki Imanaka

Hidehiko Kanda

Masanori Takenouchi

Seiji Suzuki

Shinichi Sato

Teruo Ozaki

Shigeyasu Nagoshi

Eiichiro Shimizu

Miyuki Matsubara

Hiroshi Sato

Makoto Shioya

Masaya Uetsuki

Teruo Arashima

Yoichi Taneya

Miyuki Fujita

Muga Mochizuki

Hirokazu Tanaka

Masami Kasamoto

Yuji Kamiyama

Shin Ishimatsu

Noriyoshi Ohshima

Hiroto Ohnari

Satoshi Yanase

Keisuke Miyashiro

The present invention relates to a water softening device including: a resin chamber which has an ion exchange resin and softens hard water passing through the ion exchange resin; and electrodes which are arranged by placing the resin chamber therebetween and apply voltages to the resin chamber so as to soften the hard water, and which regenerates the ion exchange resin, wherein the ion exchange resin is a slightly acidic cation exchange resin and/or a weakly alkaline anion exchange resin. The present invention provides the water softening device capable of easily regenerating the ion exchange resin and repeating the softening-regenerating without using chemicals or the like while maintaining the performance of softening water, thereby enabling a continuous use thereof.

Water softening device and method for regenerating ion exchange resin

A liquid ejecting head includes an ejection side surface; an ejection outlet, formed in the ejection side surface, for ejecting liquid; and a protection tape pasted on the ejection side surface. The protection tape is partly irradiated with ultraviolet radiation or infrared radiation after being pasted on the ejection side surface such that bonding strength is different depending on a position of the protection tape.

Liquid jetting head, method for changing protective tape in adhesive strength, and protective tape

A Liquid ejecting method for ejecting liquid using a bubble, includes using a liquid ejecting head having an ejection outlet for ejecting the liquid, a bubble generating region where a bubble is generated in the liquid, a movable member which is disposed faced to the bubble generating region, and which is displaceable between a first position and a second position farther from the bubble generating region than the first position and which has a free end at a downstream side thereof; displacing the movable member from the first position to the second position by pressure based on generation of the bubble in the bubble generating region, wherein the bubble expands more to the downstream side than to the upstream side with respect to a direction toward the ejection outlet by the displacement of the movable member, thus directing the bubble toward the ejection outlet to eject the liquid through the ejection outlet; and imparting an operation to the liquid ejecting head to normalize a state of the liquid in a liquid flow path for the liquid at least before liquid ejection start or at the time of non-ejection of the liquid.

Liquid ejection method and liquid ejection head therefor

A method for manufacturing an ink jet recording head, which is provided with a first base plate having energy generating elements, a second base plate having grooves for forming ink flow paths corresponding to the energy generating elements, and a discharge port forming member for forming discharge ports for discharging ink. The method includes the steps of forming the discharge ports by irradiating the discharge port forming member with laser light reflected from the groove wall faces, and direct laser light, and forming the flow paths by bonding the base plate and the second base plate with the grooves inside.

Method of manufacturing an ink jet recording head

An ink jet recording head includes a plurality of recording elements arranged in an array on a substrate, the recording elements having electric resistances with a variance not less than 4% from a resistance value of at least one of the recording elements, wherein the recording elements generate ink ejection energy to effect printing; a plurality of measuring elements, disposed adjacent at least each of the opposite ends of the array of the recording elements, for detesting characteristic values of the recording elements; and a storing section for storing an average, a median or a reference value corresponding thereto.

Ink jet recording head, manufacturing method of same, ink jet recording apparatus and ink jet recording head driving method

A liquid ejection head includes an ejection outlet for ejecting liquid; a bubble generating region for generating a bubble; a movable member disposed faced to the bubble generating region and movable between a first position and a second position which is farther form the bubble generating region than the first position; a liquid supply passage for supplying the liquid to the bubble generating region from upstream of the bubble generating region; an opening, in fluid communication with the supply passage, for discharging the liquid.

Liquid ejection head, apparatus and recovery method for them

A liquid ejecting method for ejecting liquid by generation of a bubble includes preparing a head comprising an ejection outlet for ejecting the liquid, a bubble generation region for generating the bubble in the liquid, a movable member disposed faced to the bubble generation region and displaceable between a first position and a second position further from the bubble generation region than the first position; and displacing the movable member from the first position to the second position by pressure produced by the generation of the bubble in the bubble generating portion to permit expansion of the bubble more in a downstream side nearer to the ejection outlet than in an upstream side.

Liquid ejecting head, liquid ejecting device and liquid ejecting method

A liquid ejecting head for ejecting liquid by generation of bubble includes an ejection outlet for ejecting the liquid; a liquid path in fluid communication with the ejection outlet; a bubble generation region for generating the bubble in the liquid; a movable member having a fulcrum and a free end and disposed faced to the bubble generation region; wherein the movable member moves from the first position to the second position by pressure produced by the generation of the bubble, and a resistance against movement of the movable member, is smaller adjacent the free end than adjacent the fulcrum.

A liquid ejection method including the steps of preparing a head comprising an ejection outlet, a bubble generation region, a movable member faced to the bubble generation region and displaceable from a first position to a second position further from the bubble generation region than the first position; displacing the movable member from the first position to the second position by pressure produced by the generation of the bubble to permit greater expansion of the bubble downstream as compared to upstream; and supplying a driving pulse to generate each bubble, wherein the pulse is divided into a first pulse for pre-heating the liquid and a second pulse for ejecting the liquid.

Liquid ejection method, head and apparatus

An ink jet recording head includes a substrate having an element surface provided with energy generating elements, a ceiling plate provided with a grooved surface having grooves to become ink passages, the grooved surface and the element surface being bonded to form the ink passages, a base plate for supporting the substrate from the side opposite the element surface, and an ink supply member in contact with the base plate at a contact portion and having an ink flow path wall face to be communicated with the ink passage. The base plate and the ink supply member pinch the substrate and the ceiling plate at the contact portion as a fulcrum so as to enable the base plate to press the substrate from the side opposite the element surface, and the ink supply member to press the ceiling plate from the side opposite the grooved surface.

Ink jet recording head having substrate and ceiling plate base pressed together by base plate and ink supply member

A liquid discharging head includes a discharge port for discharging liquid, a liquid passage communicated with the discharge port, a bubble generating area for generating a bubble in the liquid in the liquid passage, the bubble generating area including a heater for heating the liquid in the liquid passage, and a movable member disposed in a confronting relation to the bubble generating area in the liquid passage and adapted to be shifted by pressure caused by generating the bubble at the bubble generating area to direct the pressure toward the discharge port and to be returned to its initial position by negative pressure due to contraction of the bubble, and wherein resistance of the movable member against the liquid in the liquid passage when it is shifted is smaller than that when it is returned.

Liquid discharging head

There is disclosed a liquid discharging method and apparatus in which a bubble is formed and grown in the liquid communicated with atmosphere at an area of a discharge opening, and in which a movable member having a free end which guides the bubble toward the discharge opening while regulating growth of the bubble.

Method and apparatus for discharging liquid by a gas bubble controlled by a movable member to communicate with the atmosphere

An ink jet cartridge comprises an ink jet head unit for discharging the ink, and an ink tank unit having an ink supply port for supplying the ink to the ink jet head unit. The ink tank unit has a partition portion for partitioning between an ink storing portion for storing the ink to be supplied to the ink jet head unit and a negative pressure generating member receiving portion having a negative pressure generating member. The ink supply port is provided on the negative pressure generating member receiving portion. The partition portion has an ink communicating portion at an end portion of the partitioning portion on the side of the negative pressure generating member receiving portion where the ink supply port is provided, and makes contiguous the ink storing portion and the negative pressure generating member receiving portion in a movement direction of the ink tank unit when discharging the ink.

Partitioned ink tank

Growing community of inventors

Sagamihara, Japan

Takeshi Okazaki