Identifier: americanannualof36newy (find matches)
Title: The American annual of photography
Year: 1922 (1920s)
Authors:
Subjects: Photography
Publisher: New York : Tennant and Ward
Contributing Library: Harold B. Lee Library
Digitizing Sponsor: Brigham Young University

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
hardener,besides the fact that the prints are put through an acid bathto check the action of the developer completely. The strengthof the hypo is one to four and the ,^cid hardener one tosixteen. The complete bath is exactly ,the same as recom-mended by manufacturers of developing papers.^^The acidchecking bath is i^ oz. to 32. % ,^^^k - The Bleacher. Many bleaching bath formulae are in existence, and it isdoubtful in the writers mind if they produce any differentresults. It is advisable to use a bath of good strength, asfinal results depend upon complete action. A satisfactoryformula is given which produces first class results. Printswill bleach in 45 to 60 seconds, and should be allowed toremain for at least five minutes to make the action certain.This solution can be used repeatedly until exhausted, which isnoticeable as its action gets slower. Sediment will form andthis should be filtered out as it very often leaves marks onthe print. These marks are easily removed by absorbent 50
Text Appearing After Image:
FAMILY GROUP. LOUIS FLECKENSTEIN. 51 cotton under water, but it is best not to touch the gelatinesurface in any manner. The Acid Bath. The use of the acid bath has been discarded by the intro-duction of a special bleacher originated in England. As ft *is not always convenient to get the imported article, besidesit being much more expensive than the making of your ownsolution, it is better to use the acid. This bath removes all color of the bleacher stain and tendsto make the gelatine absorbent, which is quite an advantagein inking. Sulphuric Acid (C. P.) is used, and while it isvery strong it can be handled with sufficient care to preventtrouble. If gotten on the clothes it leaves a red mark thatis impossible to remove and in contact with the skin burnsquickly. In mixing with water always add the acid slowlywith constant stirring. Never add zvater to acid as anexplosion will result, due to instant generation of steam, andacid will be scattered broadcast. Final Fixing Bath. This bath i

Note About Images