Patent ID: 11926156
Assignee: ROHM CO., LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A thermal print head, comprising:
a substrate, made of a semiconductor material, and having
a main surface facing a thickness direction and
a convex portion protruding from the main surface and extending in a main scanning direction;

a resistor layer, including a plurality of heat generating portions arranged in the main scanning direction and located on the convex portion; and
a wiring layer, conducted to the plurality of heat generating portions and formed to contact the resistor layer, wherein
the convex portion includes:
a top surface, facing the thickness direction and located away from the main surface; and
a first inclined surface and a second inclined surface that are connected to the main surface, located away from each other in a sub-scanning direction, and inclined with respect to the main surface, and wherein
at least one of two ends of the convex portion in the main scanning direction forms a third inclined surface connected to the main surface and the first inclined surface, and a fourth inclined surface connected to the main surface and the second inclined surface,
the third inclined surface is inclined with respect to the main surface and the first inclined surface and
the fourth inclined surface is inclined with respect to the main surface and the second inclined surface.