 | 1883 - 710 lapas
...other pigment. In making the copy, the drawing to be copied is put in a photographic printing-frame, and the negative paper laid on it, and then exposed...ground: in other words, it is a negative or reversed picture. The paper is then dried, and a positive made from it by placing it on the glass of a printing-frame,... | |
 | William Theodore Brannt - 1886 - 604 lapas
...other pigment. In making the copy the drawing to be copied is put in a photographic printing-frame, and the negative paper laid on it and then exposed...a dark ground : in other words it is a negative or reverse picture. The paper is then dried and n positive made from it hy placing it on the glass of... | |
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... make the positive print, another bath is made just like the first one, except that lampblack is substituted for the burnt umber. To obtain colored positives the black is replaced by some red, blue, or other pigment. In making the copy, the drawing... 