Dot Etcher
Overall rating: (N/A)
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Increases or reduces size of photographic dots by chemical or
photomechanical methods to make color corrections on halftone
negatives or positives to be used in preparation of lithgoraphic
printing plates: Examines film on light table to determine
specified color and color balance, using magnifying glass or
densitometer.
Compares proof print of color separation negative
or positive with customer's original sample or copy and standard
color chart to determine accuracy of reproduction.
Identifies
and marks color discrepancies on print and film.
Prepares dyes
or other chemical solutions according to standard formulas and
applies solution to inaccurately colored aeras of film to
correct color by chemical method. Blocks out or modifies color
shades of film, using template, brushes, and opqaue. Prepares
photographic masks to protect areas of film not needing
correction, using contact frame and automatic film processor or
by manually cutting masking material, to correct color by
photomechanical method. Determines extent of correction and
exposure length needed based on experience or predetermined
exposure and color cahrts.
Places masks over separation
negatives or positives and exposes film for specified time,
using contact frame and automatic film processor to reduce size
of photographic dots to increase or reduce color.
Applies opaque
to defective areas of film to block out blemishes and pinholes.
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Dot Etcher
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