Photogravure
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Photogravure - Henry R. Blaney
Henry R. Blaney
Photogravure
Published by Good Press, 2019
goodpress@okpublishing.info
EAN 4064066206758
Table of Contents
PHOTOGRAVURE.
BY HENRY R. BLANEY.
INTRODUCTION.
CHAPTER I.
The Negative.
Solution A.
Solution B.
Woodbury's Formula.
Obernetter Process.
CHAPTER II.
The Transparency.
Eikonogen and Hydrochinon Developer.
Carbutt's New Acid Fixing and Clearing Bath.
CHAPTER III.
The Carbon Tissue—(Sensitizing and Exposure) .
Sensitizing the Tissue.
CHAPTER IV.
The Cleaning and Graining of the Copper Plate, and Grade of Copper Necessary, and Where and How to Buy It at Reasonable Prices.
II.— Graining the Copper Plate.
CHAPTER V.
Development of Negative Resist on the Copper Plate, and Preparation for Biting with Acid through the Gelatine.
CHAPTER VI.
The Acid Baths.—How to Make Them and Method of Biting through the Gelatine.
Formula for Acid Baths.
Biting Bath.
Another Formula.
Average Bitings.
CHAPTER VII.
Cleaning and Polishing the Plate, with Tools Necessary for Retouching.
CHAPTER VIII.
Printing the Plate and Steel Facing.
Steel Facing.
(Obernetter's.)
CHAPTER IX.
Materials Necessary for Photogravure, and List of Firms Supplying them.
Materials.
List of Firms Supplying Materials for Photogravure.
CHAPTER X.
Books and Articles on Photogravure. Published from 1888 to 1893.
Merck's Pyrogallic Acid
Scovill & Adams Photo-Engraving Materials,
Copying Cameras
PHOTO-ENGRAVING.
The Scovill Enlarging, Reducing and Copying Cameras.
SCOVILL Copying Cameras.
The S. & A. Photo-Engravers' Adjustable Screen Plate Holder.
The Scovill Printing Frames for Photo-Engraving.
IN OLDEN TIMES
Process Engravers.
· · Publications · ·
SUN AND SHADE.
ALFRED SELLERS & CO.
Printing Frames, Etching Tubs, Etching Powders, Rollers, Etc.
AMATEURS!
Photogravure Worker.
NO?
BETTER DO SO AT ONCE.
ZEISS-ANASTIGMAT LENSES
BAUSCH & LOMB OPTICAL CO.
The Scovill & Adams Co. 423 Broome Street, New York.
= IMPORTANT =
Send orders to your Dealers, or to The Scovill & Adams Co., New York.
See that you get the Genuine Schering's.
Excelled by none.
Send Orders to your Dealers, or to THE SCOVILL & ADAMS COMPANY, NEW YORK.
THE SCOVILL & ADAMS COMPANY,
423 Broome Street, New York City.
E. EDWARDS PHOTO. N.Y PHOTOGRAVURE CO.
A ROADSIDE COTTAGE IN THE CATSKILLS.A Roadside Cottage in the Catskills
PHOTOGRAVURE.
Table of Contents
BY
HENRY R. BLANEY.
Table of Contents
With Introduction and Additions by the Editor.
NEW YORK:
THE SCOVILL & ADAMS COMPANY.
1895.
Copyright, 1895,
The Scovill & Adams Company.
INTRODUCTION.
Table of Contents
About the year 1820 Nicéphore Niepce made the discovery that bitumen, under certain conditions, was sensitive to light. He dissolved it in oil of lavender, and spread a thin layer of the solution thus obtained upon stone. This he exposed under a drawing (making the paper transparent by waxing), and after sufficient exposure, oil of lavender was poured on. Those portions of the bitumen which had been exposed to the action of the light had become insoluble, and so remained while the lines which had been protected by the drawing were dissolved away. By treating the stone with an acid these lines were bitten or eroded, and could be printed from. Niepce afterward employed metal plates instead of the stone.
Here we have the foundation for a number of printing processes of the present day, including photogravure.
For many years, however, progress in processes for intaglio printing was very slow. In 1852 Talbot introduced a process termed photoglyphy, and in 1854 Paul Pretsch, of Vienna, patented a process which he termed photogalvanography. In 1870 the late Walter B. Woodbury, inventor of the Woodburytype process, suggested to M. Rousselon, of M. M. Goupil & Co.,[A] a process which he had discovered, and which he describes[B] as follows:
"The method, as perhaps many of your readers know, is based on the fact that some pigments used in carbon printing have an unpleasant habit of granulating when mixed with gelatine and bichromate, destructive to their use in carbon printing and Woodburytype, but bearing the essence of success in an engraving process where grain is necessary. The origin of this method was simply owing to my getting some bad reliefs, in which this effect was first noticed. Out of this arose the photo-engraving process which, as I said before, is now claimed as the invention of a Frenchman.