Ultraviolet Irradiation Reflector Geometry for Ink Curing

The patent applies local quality by creating a non-uniform light distribution pattern where the central region receives higher intensity ultraviolet light for efficient curing, while the peripheral regions receive progressively less intensity. This is achieved through the specific geometric configuration of the light source and reflective surfaces, which concentrate light energy where it is most needed for curing the ejected liquid, thereby maintaining high curing efficiency across the irradiation area.

The patent employs dimensional change by utilizing a three-dimensional reflective surface structure (including side surfaces and bottom surfaces) to redirect ultraviolet light from the light source onto the medium. This multi-dimensional light redirection system allows the irradiation unit to maintain effective light intensity across a larger area by bouncing light through multiple paths and angles, compensating for the intensity loss that would normally occur with increased distance.

The patent applies asymmetry by configuring the reflective surfaces with specific non-uniform angles - the side surfaces and bottom surface are arranged at different angles relative to the light source, creating an asymmetric light reflection pattern. This asymmetric configuration optimizes light directionality to focus energy where needed while avoiding the complexity of precise symmetric alignment, achieving effective light control through deliberate angular variations in the reflective structure.