Ink jet printer and ink jet recording unit

Details Ink jet printer and ink jet recording unit Ink jet printer and ink jet recording unit

1996-12-24

1999-10-19

Le, N.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

B41J 2175

Patent

active

059697385

ABSTRACT:
An ink supply passage 16 has a large cross-sectional area and ink tanks 6 are connected to the top of the ink supply passage 16. An ink supply passage 17 is a flow passage shaped like a semicylinder and has a cross-sectional area equal to or smaller than the cross-sectional area of the ink supply passage 16. Even if bubbles are mixed into the ink supply passage 17, they adhere to the upper portion of the flow passage 17 and do not flow into lower corners, so that a flow passage can be provided and the ink flow is not hindered. Since an ink supply passage 19 connected to a head chip 4 has a small diameter, bubbles mixed into the ink supply passage 19 can be removed by maintenance for sucking ink forcibly. Bubbles mixed upstream are not transported to the ink supply passage 19 because of the flow rate difference caused by the cross-sectional area difference.

REFERENCES:
patent: 3805276 (1974-04-01), Ishii
patent: 5502479 (1996-03-01), Ishinaga et al.
patent: 5576750 (1996-11-01), Brandon et al.
patent: 5699095 (1997-12-01), Mitsuzawa et al.

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