Pinhole

In gravure, flexography, and screen printing, the result of pinholing. See Pinholing.

In photography, pinholes are small, transparent dots that appear in non-image areas of a negative (or small black dots that appear in the non-image areas of a positive) produced by dust on the camera lens, copy, copyboard, or film. Pinholes also appear in non-image areas of photostencils.

In papermaking, pinholes are small imperfections in the surface of a paper, produced by foreign particle contamination during forming.

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