Double-shot Injection Keycaps
Pros: Legends are formed by fusing two types of plastic, ensuring they never wear off; high clarity with sharp edges; smooth tactile feel; a common process for high-end keycaps.
Cons: High mold and production costs; difficult to produce complex patterns; primarily limited to basic characters.
Dye-sublimation Keycaps
Pros: Ink permeates the surface layer of the keycap, making legends resistant to wear; supports complex patterns and multi-color schemes; the most common process for PBT keycaps.
Cons: Limited legend clarity on light-colored keycaps; high-temperature processing limits material compatibility.
Laser-etched (Laser-engraved) Keycaps
Pros: Flexible processing suitable for small batches; supports side-printing and translucent legends; moderate cost.
Cons: Legends sit on the surface and may fade over time due to friction; edges of laser-etched characters can sometimes appear dark or rough (burrs).
Screen-printed Keycaps
Pros: Supports rich colors and complex patterns.
Cons: Ink adheres to the surface and wears off easily; mostly used on low-end membrane keyboards.
