Seiko Epson Corporation

Seiko Epson Kabushiki Kaisha

Makoto Matsuzaki

Satoshi Shinada

Fujio Akahane

Takao Kobayashi

Minoru Usui

Kenichi Kanbayashi

Fumie Uehara

Hiroto Nakamura

Toshio Kumagai

Masahiro Yatake

Masato Shimada

Tsutomu Nishiwaki

Hidehiko Komatsu

Yoshinori Miyazawa

Takashi Suzuki

Hiroko Hayashi

Akira Matsuzawa

Hitoshi Ohta

Haruo Nakamura

Shigenori Fukasawa

Makoto Fujino

Michinari Tsukahara

Osamu Ishibashi

Masanao Matsuzawa

Hiroyuki Kamei

Norihiko Kurashima

Masamitsu Uehara

Masakazu Shinozuka

Yoshiyuki Koike

Tohru Fukushima

Fumiyuki Kanai

Toshiaki Ohshima

Fumitsugu Ito

Yoshie Hosono

Minori Usui

Ikuko Kawakami

Satoshi Shindada

Fukio Akahane

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 is composed of the body of a container provided with an ink supply port for discharging ink into a print head for housing ink and a lid for sealing the body of the container so that the container can communicate with the air. A semiconductor memory device storing information related to ink is mounted on the surface of the body of the container or the cap and is coated with a removable film.

Ink cartridge for ink-jet printing apparatus

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.

An ink for ink jet recording including at least a particulate pigment having a sulfur-containing dispersibility providing group chemically bonded to the pigment surface with a treatment containing sulfur, a penetrating agent and a liquid component including water. In one embodiment, the liquid component includes polyvalent metal ions and has a sulfur content that is 2,000 ppm or less as calculated in terms of SO . In other embodiments, the ink has (a) a sulfonic acid anion group or a sulfinic acid anion group and an alkaline metal or monovalent counter ion; (b) a penetrating agent having the formula R&mdash;EOn &mdash;POm &mdash;X; and (c) a sulfur-containing dispersibility providing group in an amount of 10&times;10 equivalent or more per gram of particulate pigment.

Ink for ink-jet recording and process for producing the same, ink set for ink-jet recording, and ink cartridge

Growing community of inventors

Nagano, Japan

Makoto Matsuzaki