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Aquatint is an intaglio printmaking technique, a variant of etching.〔(【引用サイトリンク】title=Aquatint - Definition and More from the Free Merriam-Webster Dictionary )〕 In intaglio printmaking, the artist makes marks on the plate (in the case of aquatint, a copper or zinc plate) that are capable of holding ink. The inked plate is passed through a printing press together with a sheet of paper, resulting in a transfer of the ink to the paper. This can be repeated a number of times, depending on the particular technique. Like etching, aquatint uses the application of a mordant to etch into the metal plate. Where the engraving technique uses a needle to make lines that print in black (or whatever colour ink is used), aquatint uses powdered rosin to create a tonal effect. The rosin is acid resistant and typically adhered to the plate by controlled heating. The tonal variation is controlled by the level of mordant exposure over large areas, and thus the image is shaped by large sections at a time. Another tonal technique, mezzotint, begins with a plate surface that is evenly indented so that it will carry a fairly dark tone of ink. The mezzotint plate is then smoothed and polished to make areas carry less ink and thus print a lighter shade. Alternatively, beginning with a smooth plate, areas are roughened to make them darker. Occasionally these two techniques are combined. == History == The painter and printmaker Jan van de Velde IV invented the aquatint technique in Amsterdam, around 1650.〔Hind AM (1963) A History of Engraving and Etching. Dover Publications, New York.〕 The cartographer Peter Perez Burdett later introduced his 'secret' aquatint technique to England in the 1770s.〔Ann V. Gunn, "Sandby, Greville and Burdett, and the 'Secret' of Aquatint," ''Print Quarterly,'' XXIX, no. 2, 2012, pp. 178-180.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Aquatint」の詳細全文を読む スポンサード リンク
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