B41J2/3357

THERMAL HEAD AND THERMAL PRINTER
20260042298 · 2026-02-12 ·

A thermal head includes a substrate, a bonding material, an electrically conductive member, and an aluminum electrode. The bonding material is positioned on the substrate and contains gold and tin. The electrically conductive member is positioned on the bonding material. The aluminum electrode is positioned on the substrate and electrically connected to the electrically conductive member via the bonding material.

Thermal print head
12570092 · 2026-03-10 · ·

A thermal print head includes: a substrate including a main surface; an insulating film arranged on the main surface; a first wiring layer arranged on the insulating film; a first interlayer insulating film arranged on the first wiring layer; a heat-generating body film; and a second wiring layer arranged on the first interlayer insulating film with the heat-generating body film interposed therebetween, wherein a bump is formed on the main surface, wherein the bump extends along a first direction in a plan view, wherein the second wiring layer extends along a second direction orthogonal to the first direction to intersect the bump in a plan view, and includes first, second, third, and fourth wirings arranged along the first direction, wherein the second wiring is located between the first wiring and the third wiring, and wherein the third wiring is located between the second wiring and the fourth wiring.