If platinotype or gaslight paper is used, this, of course, requires development.
In the same year of Our Lord, 1873, Willis invented his platinotype photographic process, in which finely divided platinum forms an image virtually permanent, and Edison invented his duplex telegraph.
Platino-Bromide paper gives delicate platinotype tones, and where negative, paper and manipulation are in harmony, the prints obtained on this paper will be indistinguishable from good platinotypes in quality and attractiveness.
It offers a range of tone from deepest black to the most delicate of platinotype grays, which may be modified to give a fair variety of color effects where this is desirable.
It should be seen from the foregoing general outline of the process that for directness, simplicity, and for the short time in which a finished print may be produced that platinotype stands alone amongst printing methods.
The air we breathe, and therefore the air enclosed within the tin case or any other vessel contains a large amount of moisture, and this moisture would be taken up by the platinotype paper to its own detriment.
Illustration] Amongst the various printing processes in common use amongst photographers, platinotype is unique in several respects.
An exception in this respect must, however, be made in the case of what is known as Packham's method, the effect of which is to change the black platinotype to a sepia brown, or a brown slightly tinged with green.
A thin negative is better printed by the cold bath process, but negatives should be good and brilliant for platinotype printing.
Any one taking up platinotype and getting only weak prints would do well to look to his negatives instead of blaming the paper, as the high lights should be fairly dense, and the deep shadows nearly clear glass.
In such cases the photographic print should be as faint as possible; any photographic paper may be used for water colour, but smooth platinotype will probably be the most pleasant.
Platinotype paper being already sized requires no further sizing, and by making a weak under-exposed print the subsequent reduction or bleaching of the image can be rendered unnecessary.
The surface and general character of a platinotypeor matt paper print will be pleasantest to work on; with an albumenised paper, ox gall will again be essential.
The best for general use will be the smoothest platinotype paper, or a not too highly-glazed white albumenised paper, either of which are obtainable at most chemists and all photographic dealers.
Historical illustrations of the development of the platinotype process.
Pizzighelli's visible platinotype printing paper was introduced this year, and I welcomed it as a boon, for the double reasons of its simplicity and permanency.
Pizzighelli's visible platinotype printing paper put on the market in June.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "platinotype" in a variety of sentences. We hope that you will now be able to make sentences using this word.
