The American annual of photography . ing Bath. This bath is also mentioned in other cases as being plain,acid, etc. An acid hardener bath at this stage has a tendencyto toughen the gelatine and is not recommended. The additionof sulphite of soda only produces the best results. This fixingbath is weak and need be no stronger than one to ten. Washing. Washing after first development and fixing should bethorough, and the same applies after bleaching and handled over in twelve changes of water is a morecertain process than running water. Drying. For Bromoil work it is very important
The American annual of photography . ing Bath. This bath is also mentioned in other cases as being plain,acid, etc. An acid hardener bath at this stage has a tendencyto toughen the gelatine and is not recommended. The additionof sulphite of soda only produces the best results. This fixingbath is weak and need be no stronger than one to ten. Washing. Washing after first development and fixing should bethorough, and the same applies after bleaching and handled over in twelve changes of water is a morecertain process than running water. Drying. For Bromoil work it is very important that prints dry evenly,or white blotches will appear when ink is applied. To laythe paper flat at any stage of drying is sure to leave shallowpools of water which will take longer to evaporate than thebalance of the surface, and in most cases a circle of whitewill be the result. Patches that refuse the ink are also causedby not keeping the paper moving and completely submergedat all times no matter whether in plain water or chemical. Figure i. Illustrating article Bromoil Results, by Chas. H. Partington. 53 solutions. Papers that float, such as Royal Bromide, must bewatched at all times to prevent this trouble. At any stage of drying the paper should be drained, placedface up on clean blotters and surface dried by dabbing witha clean cloth. For this purpose a handkerchief that has beenwashed several times serves very well. Dab off the surpluswater lightly as too rough a treatment may damage thesurface. Condensed Operations and Formulcu. The enlargement is exposed the same as if Bromoil was notconsidered and developed in the following: Water 12 oz Sodium Sulphite (anhydrous) 180 grains Amidol 35 grains Potassium Bromide (saturated) 5 drops After development pass print through an acid short stopas follows: Water 32 oz Acetic Acid (28%) i^ oz Rinse in clean water and fix for ten minutes in Water 16 oz Hyposulphite of Soda 4 oz Acid Hardener i oz For convenience the acid hardening
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
