Liquid jet head, and liquid jet apparatus therefor
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United States of America Patent
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Apr 28, 1998
Issued Date -
N/A
app pub date -
Dec 19, 1996
filing date -
Apr 16, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A liquid jet head for discharging liquid comprises a plurality of element boards each having electrothermal transducing elements to generate thermal energy for discharging liquid, and functional elements to drive the electrothermal transducing elements on one and the same board; and a circuit board having the wirings through which the functional elements input signals from or output signals to outside. Electrical connections are made so that the output signals from the element board are inputted to the adjacent element board through the circuit board. In this way, no connections are needed between chips in wire bonding to make the directions of bonding one-way, leading to a significantly increased efficiency of work on the wire connection. Also, with this structure, the adverse effect that would otherwise be produced on the element boards can be avoided in wire bonding, making it possible to miniaturize the element boards, and the head accordingly, and implement a highly densified nozzle arrangement for an elongated head.
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