| 单词 | self-toning | 
| 释义 | > as lemmasself-toning   self-toning adj.  Brit. , U.S. Photography (now historical) designating photographic paper in which the emulsion contains a chemical substance that allows the image to be toned during fixing, rather than in a separate process. ΚΠ 1886    Photographer's World 15 Oct. 14/2  				One labour-saving product of this establishment deserves to be noticed. It is the ready-sensitised and self-toning paper. 1950    Pop. Photogr. July 26/3  				We have found du Pont's new Warmtone Projection Paper one of the most effective and easy-to-use ‘self-toning’ papers on the market. 2007    M. Osterman in  M. R. Peres Focal Encycl. Photogr. 		(ed. 4)	 111/2  				Self-toning paper At the end of the 19th century some commercial collodion and gelatin printing-out papers were made available with the toner in the emulsion. < as lemmas | 
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