Seiko Epson Corporation

Fumiyuki Kanai

Atsushi Kobayashi

Shinri Sakai

Tatsuo Furuta

Hiroshi Hosokawa

Makoto Matsuzaki

Kenichi Kanbayashi

Fumie Uehara

Ikuko Kawakami

To provide a liquid guiding device such that, when liquid is dumped onto a sloping guiding surface portion located in a region where ink is dumped, the liquid is easily guided to an ink absorber and no liquid remains on the guiding surface portion. A guiding surface portionis provided in a liquid dumping regionin which ink absorbersandare provided and on the upstream edge of a downstream portionof a platen. The upper surface of the guiding surface portionsslopes down toward the upstream side, that is, toward the liquid dumping region. In the guiding surface portionis formed a guiding structure portionthat guides ink attached to the guiding surface portion to the ink absorber. The guiding structure portion may include an edge portionthat guides liquid by capillary action. The edge portion may extend to the ink absorbersand

Liquid guiding device and liquid ejecting apparatus

In an ink-jet type recording head including a nozzle plate provided with nozzle openings, a spacer provided with partitions for partitioning pressure generating chambers, ink supply ports and reservoirs, and a plate member sandwiched and fixed together. Displacement of the plate member is produced by piezoelectric vibrators to thereby generate ink droplets. The spacer is formed by anisotropic etching of a silicon single crystal substrate so that the pressure generating chambers, the ink supply ports and the reservoirs are formed as through-holes communicated with each other. Accordingly, etching conditions for the respective through-holes are made equal to each other. Particularly, through-holes small in sectional area such as the pressure generating chambers and the ink supply ports can be formed with a high accuracy.

Ink-jet type recording head

In an ink-jet type recording head including a nozzle plate provided with nozzle openings, a spacer provided with partitions for partitioning pressure generating chambers, ink supply ports and reservoirs, and a plate member sandwiched and fixed together. Displacement of the plate member is produced by piezoelectric vibrators to thereby generate ink droplets. The spacer is formed by anisotropic etching of a silicon single crystal substrate so that the pressure generating chambers, the ink supply ports and the reservoirs are formed as through-holes communicated with each other. Accordingly, etching conditions for the respective through-holes are made equal to each other. In different embodiments, the spacer includes chamfered portions or a plurality of fine planes and steps along which adhesive spreads during assembly of the head. In a further embodiment, the spacer includes different length partitions are between the pressure generating chambers.

A hot-melt ink composition for an ink jet printer, comprising a coloring agent, and a vehicle which comprises a dialkylbenzenesulfonamide, a monoalkylbenzenesulfonamide, and a resin; and a hot-melt ink composition comprising from 10 to 30 wt. % of a coloring agent, and a vehicle. These ink compositions can produce high quality images which have improved resistance to abrasion and are free from blooming.

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Matsumoto, Japan

Fumiyuki Kanai