Canon PowerShot G9
ƒ/2.8
7.4 mm
1/40
200
…pair of pad print heads at the Eoplex labs.
I always thought keyboard keys were printed individually and then placed in order. Pad printers can roll inks across all kinds of surfaces (e.g., golf ball dimples), and so the letters and numbers are actually printed onto an otherwise finished keyboard in one big rolling step that can even print on the sides of the keys.
More generally, these soft print heads deposit materials on 3D surfaces. They conform to the surface and can be used to build up metals and ceramics into complex 3D structures, like ceramic cell phone antennae.
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