Details of exhibit
- Exhibition:
- 1912 Fifty-seventh Annual Exhibition of the Royal Photographic Society of Great Britain
- Exhibit title:
- An original photo-mechanical process, enabling steel or copper plate engravings to be reproduced in facsimile with the utmost ease
- Exhibitor:
- A. Bawtree
- Section:
- II. Scientific, Natural History, Colour, and General Photographs
- Exhibit No.:
- 252
- Description:
- The process consists of two entirely novel operation: -
(1) Instead of making the printing transparency by means of a lens and sensitive plate, the actual pigment of the engraving is transferred to glass with neither the loss nor gain of a particle. This yields a transparency incomparably superior to the best than can be obtained by the purely photographic manner. After serving its purpose as a transparency, the pigment is again put on to paper.
(2) Printing from this transparency an engraved plate on copper or steel by a method which retains the full value of the most delicate hair lines of the original, without exaggerating the depth of the heavier work, thus preserving absolutely mechanically the tone values of the original.
A special warning is attached to the exhibit to bankers and others using monetary documents, that the extreme simplicity of the whole of the operations and the inexpensiveness of the appliances required render the abandonment of steel and cooper plate printing for such documents absolutely imperative in the immediate future, or wholesale forgeries will result. The processes eliminate all security hitherto given to plate-printed work by colour grounds, however printed. - Exhibit type:
- Photographic equipment and supplies
- Process:
- [Not Listed] ()
- Award:
- medal
