Ink jet recording head having reserve functional devices

Details Ink jet recording head having reserve functional devices Ink jet recording head having reserve functional devices

1997-03-18

1998-03-10

Hartary, Joseph W.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

257 48, B41J 205

Patent

active

057266964

ABSTRACT:
An ink jet recording apparatus comprises a liquid ejection portion having an ejection outlet for ejecting ink; and a recording head having a substrate on which are provided an electrothermal transducer for generating heat for the ejection of ink supplied to the ejection portion, at least one functional device electrically connected to the electrothermal transducer, and a laminate. The structure of at least a part of the laminate is identical with the structure of the functional devices and the laminate is useable as a reserve functional device. Such construction of the recording head makes it possible to change the function thereof easily, and, can be copied flexibly with change of design. A portion of the functional device can be formed in a U shape.

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