Light source assembly, method of producing light source assembly, and color thermal printer

摘要

A color thermal printer includes a light source assembly for photo fixation of thermosensitive recording material. Element arrays of plural LEDs emit fixing light in a prescribed wavelength range. Each one lens passes the fixing light from one of the LEDs toward a front. A ring or loop-shaped ridge is formed to project from a connection surface of the lens, and has a ring shape. A tilted surface is disposed outside the same. An element receiving recess is disposed inside for containing at least one of the LEDs. A reflection layer of metal is overlaid on the tilted surface, receives fixing light emitted by a lateral surface of the LEDs and upon entry in the loop-shaped ridge, and reflects the fixing light toward the front. Also, the reflection layer is formed by vapor deposition of a metallic material.