PRINTING APPAR XTUS.
As the paper cannot be examined during printing, the choice of frames, broadly speaking, is very large ; in fact, any kind of frame may be used. It is even possible to print a bromide without a frame at all ; merely wetting the paper and squeegeeing it to the film of the nega tive. This is, of course, not a desirable plan in ordinary work ; but when a print has to he made rapidly from a negative which has just been developed, it may be repeat the experiment, when it will be found that the outlines of the cross be come indistinct directly it leaves the glass. Thus a very fair print may he made, as shown in Fig. 315. A sheet or two of blotting paper A is laid on a table, and over this, face up, the bromide paper B. Over the latter, again, with its film in contact with the paper, is placed the negative c. Such an arrangement necessi tates the illuminant being arranged after the manner shown ; if electric light is used this is fairly easily done. The method has
its advantages where considerable " dodg ing " has to be done, as the various parts may be shielded by merely laying cards on the negative, but it is, of course, recom mended only as a makeshift. The fewer the movements in the filling of the frame the better, as speed is a consideration. A suitable frame is shown in Figs. 316 and 317.
It is fitted with a back, which is set or removed instantaneously. It is also sup plied with hinges on one side, and a turnbutton on the other, by which it may be adjusted over an opening in the dark room door for exposure. Another arrange ment (see Fig. 318) consists of a long board numbers on one sheet when the pictures are smaller.