Fourth. The negative obtained dries quite flat on blotting paper.
Fifth. The film which constitutes the negative can be detached or peeled
from its support or backing easily and readily by the hand, without the
assistance of any dissolving or other agent. Thus this invention does
away with all sensitive preparations on glass, which latter is both a
brittle and relatively heavy material, thus diminishing the bulk and
weight of amateur and scientific photographers' luggage when traveling;
it produces photographic negatives as fine and as transparent as those
on glass, in so much that the film does not contain any grain; and,
lastly, it admits of printing from either face of the film, as regards
the production of positives on paper or other material, as well as
plates for phototypy and photo-engraving, which latter processes require
a negative to be reversed.
For the manufacture of my sensitized film paper:
First. A gelatinized sheet of paper is properly damped with cold water,
and when evenly saturated it is placed on a glass, to which it is
attached by means of bands of paper pasted partially on the glass, and
partially on the edges of the said sheet; in this state it is allowed to
dry, whereby it is stretched quite flat.
Pages:
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34