woodbug (wudbug)

A forest-bug. woodburytype (wud'ber-i-tīp), n. [Named after Walter Bentley Woodbury , the inventor.] 1. A photomechanical proce in which a relief is produced from a negative on a film of bichromated gelatin, hardened in alum. This is pre ed into a plate of soft metal, the result being an intaglio mold. A warm solution of gelatin containing any desired pigment is poured on the mold, a sheet of paper is laid over it, and pre ure applied, the superfluous pigmented gelatin being squeezed out, and only that remaining in the intaglio mold and forming the image being left. When this sets it adheres to the paper, and is then fixed by hardening in a solution of alum. Compare heliotypy .