PURPOSE: To prevent the disconnection of the wiring of electrodes and also intrusion of liquid into a recording head by improving the coverage of a protective layer by increasing the width of heating resistors in the region where the heating resistors of an electricity-heat converter in the recording head are laminated with the electrode wiring beyond that of the electrode wiring.
CONSTITUTION: A protective layer 3 for the contact portion of electrode wirings 201 and 202 and a heating resistor 203 with liquid at least is very well formed because the stepped portion between a base plate 4 and the heating resistor layer 1 is separated from the stepped portion between the heating resistor 1 and the electrode conductor layer 2. Therefore, even when the liquid jet recording head is used continuously repeatedly or for long periods of time, no trouble with dissolution of electrode conductor layer 2 due to intrusion of liquid along the electrode wirings 201 and 202 takes place.
SHIBATA MAKOTO
IKEDA MASAMI
TAKAHASHI HIROTO
| JPS55132258A | 1980-10-14 | |||
| JPS55132270A | 1980-10-14 |