Ink jet recording head with ejection outlet forming member and u

Details Ink jet recording head with ejection outlet forming member and u Ink jet recording head with ejection outlet forming member and u

1997-07-07

2000-10-24

Barlow, John

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 20, 347 49, B41J 205, B41J 2015, B41J 214

Patent

active

061355895

ABSTRACT:
An ink jet head includes a first member with an energy generating element for generating energy to eject ink, a second member having an ejection outlet forming member provided with an ink ejection outlet through which the ink is ejected, the second member being affixed to the first member to form a liquid passage in fluid communication with the ejection outlet, and urging means for urging the first and second members together to substantially fix them against each other. The ejection outlet forming member has a jaw connected with a surface of the first member which has the energy generating element, the jaw being adjacent a first member side of the ejection outlet. The following relationships are satisfied, namely, b.gtoreq.5 microns, c.gtoreq.3 microns, and a+b is between 20 and 60 microns, where a is the thickness of the ejection outlet forming member, b is a depth of the jaw, and c is a distance between a connecting portion between the ejection outlet forming member and the first member and an inside end of the ejection outlet.

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