Seiko Epson Corporation

Other

Ngk Insulators, Inc.

Minoru Usui

Satoshi Shinada

Takahiro Naka

Takao Kobayashi

Hisashi Miyazawa

Munehide Kanaya

Takahiro Katakura

Tomoaki Abe

Fujio Akahane

Kenji Tsukada

Takeo Seino

Satoru Hosono

Makoto Matsuzaki

Tsuyoshi Kitahara

Noriaki Okazawa

Koichi Toba

Shinji Yasukawa

Kazuhiko Hara

Haruo Nakamura

Hideaki Sonehara

Haruhiko Koto

Yozo Shimada

Tomoaki Takahashi

Hisashi Koike

Osamu Nakamura

Noboru Tamura

Hitoshi Hayakawa

Yasuhiro Ogura

Kouichi Toba

Atsushi Kobayashi

Hitotoshi Kimura

Shinri Sakai

Kazumi Kamoi

Yuji Tanaka

Takashi Nakamura

Hitoshi Matsumoto

Nobuo Takahashi

Masato Shimada

Tsutomu Nishiwaki

Masami Murai

Masahiro Kanai

Shuji Yonekubo

Kazunaga Suzuki

Takayuki Ishii

Norihiko Kurashima

Kouji Sumi

Kohei Kitahara

Kazuo Koshino

Koji Watanabe

Motonori Okumura

Yoshio Miyazawa

Yasushi Akatsuka

Yasuko Hirano

Naomi Shirakawa

Yukihisa Takeuchi

Seiji Mochizuki

Takayuki Iijima

Nobuo Watanabe

Hideki Oikawa

Tomio Yokoyama

Takayuki Aizawa

Yasuhiko Kamijo

Toshio Kumagai

Takeshi Kijima

Masahiko Yoshida

Shinsuke Yano

Nobuhito Takahashi

Shuhei Harada

Yoshiharu Aruga

Natsumi Shimogawa

Toshiki Usui

Shigenori Fukasawa

Tatsuya Seshimo

Takashi Mano

Tomohiro Yamada

Yoshikatsu Yamamoto

Shoichi Hiraide

Takaichi Wada

Kazuhiko Miura

Katsuhiro Komatsu

Manabu Nagawatari

Keizo Miyata

Hiroaki Tojyo

Takayuki Iljima

Hiromi Mimura

Kiyotaka Sema

Makato Matsuzaki

Yasushi Kishida

Masao Kawamura

An ink cartridge for supplying the ink in an ink reserving chamber via an ink supply port into a recording head has a differential pressure valve mechanism disposed between an ink flow port and the ink supply port in the ink reserving chamber, whereby the ink is supplied an adequate amount to the recording head by opening or closing the differential pressure valve mechanism in accordance with an ink pressure of the recording head. As a result, it is possible to supply the ink at a substantially constant pressure to the recording head without regard to the variation in the amount of ink or the movement of the carriage.

Ink cartridge for ink jet recording apparatus, connection unit and ink jet recording apparatus

An ink cartridge for supplying the ink in an ink reserving chamber via an ink supply port into a recording head has a differential pressure valve mechanism disposed between an ink flow port and the ink supply port in the ink reserving chamber, whereby the ink is supplied an adequate amount to the recording head by opening or closing the differential pressure valve mechanism in accordance with an ink pressure of the recording head. As a result, it is possible to supply the ink at a substantially constant pressure to the recording head without regard to the variation in the amount of ink or the-movement of the carriage.

A droplet ejection device includes a pressure chamber that includes a cavity surrounded by a side wall and a bottom wall, a deformable substrate that is provided above the pressure chamber to cover the cavity and that is parallel to the bottom wall, a magnetic body having an opening that is provided above the deformable substrate and that is fixed to the deformable substrate, and a coil that is disposed above the deformable substrate, that surrounds the magnetic body, and that is fixed to a fixing portion provided above the side wall.

Actuator, method for manufacturing actuator, droplet ejection device, droplet ejection head and printer

An ink jet type printing apparatus in which an ink supply needle is located near one side in a direction perpendicular to the reciprocated directions of a carriage, a circuit board is mounted on a wall of an ink cartridge in the vicinity of the side on which an ink supply port is formed and plural contacts for connecting to external control means are formed on the exposed surface of the circuit board.

Ink-jet printing apparatus and ink cartridge therefor

An ink cartridge for an ink jet printer having a housing having at least one wall. The ink cartridge further has at least two ink chambers for containing different ink accommodated in the housing. Ink supply ports are formed in one wall of the housing within each of the ink chambers. Each of the ink supply ports has an inner opening and an outer opening. The distance from the inner opening of a first ink supply port to that of a second ink supply port adjacent to the first ink supply port is different from a second distance from the outer opening of the first ink supply opening to that of the second ink supply port.

Ink cartridge for ink-jet printing apparatus

A liquid sensing apparatus includes a liquid sensing chamberhaving a liquid inlet port that is in communication with an external liquid container in which a liquid is reserved, and a liquid outlet port that is in communication with a liquid consuming apparatus, a movable membermovable depending on a liquid level in the liquid sensing chamber, a recess portionfor cooperating with a wall surface of the movable memberto form a closed space when the movable memberis moved to a predetermined position depending the liquid level, and a piezoelectric sensing meansfor applying a vibration to the recess portion and sensing a state of a free vibration following upon the vibration.

Liquid sensing apparatus for a liquid container for supplying a liquid to a liquid consuming apparatus, and a liquid container in which the liquid sensing apparatus is built

An ink cartridge for detachable mounting in an insertion direction on an ink jet printing apparatus having an ink supply needle communicating with a print head, includes a bottom wall, plural side walls, an ink supply port in the bottom wall to engage the ink supply needle as the ink cartridge moves in an insertion direction, a circuit board formed on a side wall adjacent to the bottom wall, and electrodes on the circuit board, each electrode having at least one contact region, the contact regions being divided into groups respectively arranged at intervals in the insertion direction. Part of one contact region located in a center of one of the groups of contact regions is disposed on the ink supply port's central line, and a semiconductor storage device is located on the circuit board and is in electrical communication with at least some contact regions.

A method of detecting a consumption status of liquid contained in a liquid container, comprising steps of: preparing a detection device having a piezoelectric element and attaching the detection device on a desired position of the liquid container so that at least a part of the detection device contacting the liquid; measuring a residual vibration of the detection device; and detecting the consumption status of the liquid contained in the liquid container on the basis of a result of the measurement of the residual vibration.

Liquid consumption status detecting method, liquid container, and ink cartridge

An ink cartridge serving as a liquid container, comprises a liquid sensor having a piezoelectric element which detects a consumption state of the liquid contained in the container, and a consumption data memory as a memory means. The consumption data memory is a rewritable memory which stores consumption related data which are related to the detection of the consumption state using the liquid sensor. The consumption related data are, for example, consumption state data as a result of the detection. Even when the ink cartridge is removed, the consumption state data can still be utilized. The consumption related data may be a detection characteristic detected depending on the consumption state of the liquid. Based on this detection characteristic, the consumption state is detected utilizing the liquid sensor. The consumption state can be detected irrespective of individual differences of the ink cartridges.

Liquid cotainer having a liquid consumption detecting device therein

Growing community of inventors

Nagano, Japan

Minoru Usui