Patent ID: 7956880

Claim:
A heating resistor element component, comprising: a supporting substrate having a concave portion formed in a surface of the supporting substrate; a glass substrate disposed on the surface of the supporting substrate, at least a region of the glass substrate opposite to the concave portion of the support substrate having a heterogeneous phase structure with physical properties different from those of the material of the glass substrate such that an overall mechanical strength of the glass substrate is increased, the heterogeneous phase structure being formed by laser processing using a phemtosecond laser having a power intensity of 1×10 6 W to 1×10 8 W; a plurality of heating resistors arranged at intervals on the glass substrate and having heating portions disposed opposite to the concave portion of the supporting substrate; a common wire connected to one end of each of the plurality of heating resistors; and a plurality of individual wires each connected to another end of each of the plurality of heating resistors.