A letterpress printing plate that is etched or engraved in copper, zinc, or magnesium alloy from which a single color may be printed. Line drawings may be separated from color printing but cannot reproduce gradations of tone as line cuts.
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A letterpress printing plate that is etched or engraved in copper, zinc, or magnesium alloy from which a single color may be printed. Line drawings may be separated from color printing but cannot reproduce gradations of tone as line cuts.