| 单词 | screen plate |
| 释义 | > as lemmasscreen plate screen plate n. (a) a metal mesh or grid in the form of a plate, esp. one used for sorting or separating material; (b) Photography and Printing a screen (sense 21); esp. (in early photography) one which is covered with a pattern of fine lines in three primary colours, used to produce a colour image in a single exposure (now chiefly historical).With sense (b) cf. colour screen n. (a) at colour n.1 Compounds 4. ΘΚΠ society > leisure > the arts > visual arts > photography > plates and films > [noun] > plate > types of screen plate1843 whole plate1850 quarter-plate1854 wet plate1859 stripping-film1885 gelatin dry plate1890 panchromatic1906 1843 Pennsylvania Inquirer & National Gaz. 27 Jan. Brass Screen Plates, Nos. 1, 2 and 3. 1848 Times 12 July 5/6 A wrought-iron screen-plate may be attached when tiles are not being made, for the purpose of extracting stones from the clay. 1856 Jrnl. Photogr. Soc. 21 Mar. 15/2 All photographers will see the use of the screen plate, viz. to entirely exclude from the negative proper the photogenic rays proceeding from the blues, whites, and other excessively sensitive parts, and to proportionately admit them to the less sensitive portions. 1899 Amer. Amateur Photographer Dec. 555 He showed by means of a few slides how the combination of red, green and blue lines on a screen plate produced white light. 1902 H. Jenkins Man. Photoengraving (ed. 2) vi. 48 This ‘screen plate’, or ‘half-tone screen’, may have lines ruled in only one direction or in several. 1997 B. B. Konar et al. Coal Preparation 6 The plate which supports the coal and shale bed, usually referred to as the bed plate or screen plate, allows the water current to rise and fall and is usually perforated. 2007 M. R. Peres Focal Encycl. Photogr. (ed. 4) 93/1 McDonough's linear screen plates were not commercially introduced until 1896. < as lemmas |
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