Today paper negatives are used mostly black and white and created with pinhole type cameras. These are cameras that are essentially a dark box with a pinhole on one side that serves as the lens.
Much of this work involved the use of solarized prints as paper negatives, so that the final prints showed the texture of the paper negatives and had figures with black outlines.
Light would travel through the paper negative, giving greater exposure to thelight parts and less exposure to the dark parts.
The book consisted of prints from paper negatives known as calotypes. Soon the camera was being taken to all manner of exciting, exotic places and bringing back extraordinary views that changed the way the well-informed citizen perceived the world.
It is probably apparent that a positive image (reversing the reversal of the subject, in this case) can be made by sandwiching the paper negative with another piece of photo-sensitive paper; now the negative-paper serves the place of the object; ...
The calotype, introduced in 1841; a negative-positive process using a paper negative.
The ambrotype, introduced in 1854; a negative image on glass, with a black paper backing.
In 1885 they could present a new improved paper negative film which was called the "American Film", or "stripping film". The light sensitive layer of that film was made of gelatine.
In 1835, Englishman William Henry Fox Talbot created the first paper negative. Nine years later in 1844, Talbot patented the Calotype.
After being dried again, the paper is floated on a mixture containing silver nitrate and gallic acid. The same mixture is used to develop the negative image after exposure. Following fixing in hypo, this paper negative was generally waxed for ...
 See also: Photograph, Photography, Negative, Image, Film
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