Minolta Company, Ltd.

Tomoko Yamamoto

Hitoshi Kato

Takeshi Yamashita

Takamasa Ueda

Hideo Hotomi

Masakazu Takahashi

Ink jet recorder

In an ink cartridge, a holding section, containing a holding member for holding ink, is provided in the cartridge body; a supply port, for supplying the ink held in the holding member to the outside, and a cover member, for opening and closing the supply port, are provided in the holding section; and the cover member is urged by the holding member to close the supply port. Further, in an ink supplying apparatus, a guide pipe is provided in its apparatus body, and the guide pipe is inserted into the supply port to press the cover member into the holding section to open the supply port.

Ink cartridge and ink supplying apparatus

An ink cartridge for supplying ink to a recording head in the present invention is provided with an ink containing section containing the ink, an ink supply port for supplying the ink to the recording head, a vent hole for introducing air into the ink cartridge, a first holding member containing section containing an ink holding member for holding the ink between the ink containing section and the ink supply port, and a second holding member containing section containing the ink holding member for holding the ink between the ink containing section and the vent hole, the first holding member containing section and the second holding member containing section not communicating with each other.

Ink cartridge

The present invention relates to an ink for ink-jet recording containing carbon black particles having a specific surface active hydrogen content, water, and polyethyleneimine or alkylene oxide adduct of acetylene glycol.

Ink for ink-jet recording

This invention relates to the ink for ink-jetting using water-soluble reactive dye represented by general formula (A): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are hydrogen atom or alkyl group, X represents substituted or unsubstituted phenylene group, substituted or unsubstituted diphenylene group, substituted or unsubstituted naphthylene group or --NR.sub.3 --X--R.sub.3 N-- represents 1,4-pyperazinylene group, M is alkaline metal, quaternary ammonium or hydrogen atom, n is an integer of 1 to 5, m is an integer of 1 to 5 and 'l' is 5-m, and by using those dyes as magenta dye excellent light resistance and water resistance are given to the ink.

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Takarazuka, Japan

Tomoko Yamamoto