To improve reliability of satisfactory recording quality by preventing the occurrence of peeling-off on an interface between a coating resin layer and a substrate even when an ink discharge head is lengthened.
The ink discharge head includes: a plurality of discharge ports 24 for discharging ink and the coating resin layer 2 with an ink passage 27 communicated with each of the plurality of discharge ports 24. The ink discharge head also includes: a heater element that discharges ink; and a heater board 1 on which the coating resin layer 2 is provided. On a side surface of a peripheral edge of the coating resin layer 2, a crack induction pattern 3 to alleviate stress occurring on the interface between the coating resin layer 2 and the heater board 1 is formed.
IBE SATOSHI
ASAI KAZUHIRO
TAGAWA YOSHINORI
| JPS56113471A | 1981-09-07 | |||
| JP2007331245A | 2007-12-27 | |||
| JPH0615824A | 1994-01-25 | |||
| JPH07137263A | 1995-05-30 | |||
| JP2004181901A | 2004-07-02 |
Ishibashi Masayuki
Masaaki Ogata
Next Patent: ELECTRONIC TAG AFFIXING DEVICE AND METHOD OF AFFIXATION