Ink jet type recording head having a flow passage substrate with

Details Ink jet type recording head having a flow passage substrate with Ink jet type recording head having a flow passage substrate with

1996-06-11

1999-04-20

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 65, B41J 2045

Patent

active

058961496

ABSTRACT:
In an ink jet type recording head, a flow passage forming substrate includes pressure generating chambers which are communicated with nozzle openings respectively, a common ink chamber for supplying ink to the pressure generating chambers; and ink supply inlets through which the pressure generating chambers are communicated with the common ink chamber. Each of the ink supply inlets is so designed that it has a narrow part, and it is gradually larger from the narrow part towards the pressure generating chamber, whereby the ink supply inlet is increased in length without changing the flow resistance, and the bonding area near the ink supply inlet is increased.

REFERENCES:
patent: 5424769 (1995-06-01), Sakai et al.
patent: 5539982 (1996-07-01), Hosono et al.
Patent Abstracts of Japan, Publication No. 62135378, dated Jun. 18, 1987.
Patent Abstracts of Japan, Publication No. 59179357, dated Oct. 11, 1984.

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