The American Carbon Manual
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The American Carbon Manual - Edward Livingston Wilson
Edward Livingston Wilson
The American Carbon Manual
Published by Good Press, 2022
EAN 4064066066208
Table of Contents
Preface
Introduction
Swan's Carbon Process
Details of Manipulation
The Sensitive Collodio-Gelatine Tissue
Carbon Printing in the Solar Camera
Swan's Actinometer
Vogel's New Photometer
The Chromic Salts
Physiological Effects of Chromic Salts
The Pigments Employed
The Gelatine
A Hint on the Preparation of Solution of India-rubber in Benzole
Coloring Carbon Prints
Failures, Faults, and Remedies
Many Mites from Many Minds
PREFACE.
Table of Contents
One of the greatest hindrances to the progress of the art of Photography, is the doubtful permanency of its productions. It will become an immense power if we can overcome this objection. Its votaries have learned how to secure beautiful lights and shades; brilliant chemical effects and most artistic and pleasing pictures. Never before has our art shown greater promise of improvement; never before has there been such a thirst for information and thorough training exercised as at present; and yet what a mortification to every earnest photographer to feel that his efforts can produce nothing that will bear him honor and credit longer than a few short years!
With this in view, constantly staring us in the face, is it not strange that the growth of photography has been so great as it has, and its improvement so evident as it is?
It would be so, were it not that one ray of hope has beckoned us on for a number of years back, i.e., the hope that at no distant period we might produce permanent results. That hope is now fully realized in the Carbon printing process, several of which are described herein, by which we may produce permanent photographic prints.
Many, however, are debarred from its practice by the want of a proper practical manual of instruction.
The object of this work is to observe, collate, and condense, as far as possible, the best and most practical thoughts of the few who have experimented with, and written on this process, not only abroad but at home, and to combine them with my own experience and observation.
I am particularly indebted to my friend G. Wharton Simpson, A.M., editor of the "Photographic News, London, whose excellent manual
On the Production of Photographs in Pigments — Swan's Process" — has recently been given to the world, and who is one of the earliest experimenters in the process. I also gratefully acknowledge the receipt of some useful and practical ideas from Dr. Herman Vogel, editor of the Photo. Mittheilungen, Berlin, translator and author of a revise of Mr. Simpson's work.
By careful and extended experiment I am able to indorse their views, and to add a few notes here and there of what has occurred to me in my own practice, and several other matters which I trust will be found useful. It is more difficult to sift out from a large amount of thought and record that which is most important to know—using one's brains as a sieve or filter to separate the good grain from the tares—the sediment from the pure solution, as it were—than to scatter the seed—to distribute the mixture—as one has gathered it from one's own experience and experiment. I have endeavored, however, to compile and write such matter for these pages as will make the novel, fascinating and valuable Carbon Process, plain, practical and easy to all workers in photography.
Although it will be seen by the historical notes that follow, that many carbon processes have been worked more or less, yet to Mr. Joseph Wilson Swan, New Castle-upon-Tyne, England, we are indebted for the most practical and perfect one, and to this I will ask you to give your especial attention. It is now practised considerably and successfully in this country, as our specimen will testify, and most largely abroad, by Messrs, Swan, Braun, and others.
Like many other useful discoveries, this process has been perfected only by slow degrees, and by the laborious and patient research of many individuals. As early as 1814 M. Niepce made experiments in Carbon printing, and to him it owes its origin; but after all the manifold experiments by the many who shall be named in proper place, to Mr. Swan is due the honor and praise for having simplified, perfected, and made easy of practice, a process for photographic printing, where every beauty of management and manipulation is preserved perfectly and permanently.
Those who endeavor to practise it will find it entirely different from the silver process—no gold, no silver, no hyposulphite, entering the construction of a carbon print—yet quite as easy and possessed of many advantages. If what follows should not meet every case, any who may be troubled with failures I shall be glad to answer through the columns of the Philadelphia Photographer, wherein also notes of future experiments, improvements and discoveries in the process shall be regularly recorded.
Edward L. Wilson.
Philadelphia, May, 1868.
Introduction
Table of Contents
THE
Acm p19 img01.png:
Table of Contents
OR, THE PRODUCTION OF PHOTOGRAPHS IN
PERMANENT PIGMENTS.
INTRODUCTION.
Table of Contents
A Carbon Photograph, in the strict sense of the word, is an image in carbon produced by the action of light. The term, as commonly used by photographers, has, however, a wider application, and is employed to designate any sun picture produced in permanent pigments, whether consisting of carbon or not.
Almost all the methods which have been proposed for the production of such pictures depend upon one principle. They are based on the fact that light renders certain soluble bodies insoluble in the usual menstrua. This principle admits of varied application in producing pictures; but in the processes which have been brought to the highest practical perfection, some coloring matter—Indian ink or lampblack for instance—has been added to a colorless body like gelatine or gum, which, on being rendered insoluble by the action of light in parts, imprisons the coloring matter, and thus forms the dark parts of the image. A sheet of paper coated with such a substance mixed with a pigment, exposed to light under a negative, and then washed to remove all the soluble matter, will produce a picture, the blacks of which are formed by the insoluble substance and pigment, and the whites by the surface of the paper from which the colored coating has been washed away.
It will be seen, however, that in the production of an image by means of a photographic negative, in coloring matter so imprisoned, there is no provision for the rendering of gradation of tint. A layer of substance capable of being rendered insoluble by the action of light, if extended on a sheet of paper and exposed to light under a stencil plate, would be rendered insoluble wherever the luminous action penetrated the apertures in the plate. If the paper were then treated with a solvent of the substance with which it was coated, the coating would be removed from all portions protected from the action of light by the opaque parts of the plate, and a perfect transcript of the design would be formed on a white ground. If, instead of the stencil plate, a photographic negative be employed, the image in which is formed by varying gradations of opacity, the result is somewhat different. The layer of soluble matter is rendered insoluble wherever the light has penetrated sufficiently through the transparent parts of the negative; but where the more opaque parts of the negative, through which light has penetrated with much less intensity, protect the coated surface, a portion only of the coating is rendered insoluble, that portion being the surface in immediate contact with the negative. When the prepared paper is submitted to the action of a solvent, the thoroughly-exposed portions, being quite insoluble, are not removed, but those parts representing the lighter tones of the picture, having become insoluble on the upper surface only, the layer underneath is readily dissolved, and the whole film in such parts is thus removed by the solvent. An imperfect image, possessing only deep blacks and masses of white without gradation of half-tone, is the result.
This was the great difficulty of carbon printing in the early experiments which succeeded the discovery by M. Poiteven, in 1855, of the principles upon which it is based, although the cause was not at first fully understood. After two or three years of comparatively unsuccessful effort, it was discovered, that in order to succeed in producing gradations of half-tone in such pictures, it was necessary to wash away the unaltered and still soluble matter at the side of the film opposite to that exposed to light, in order to preserve intact every portion of the