The Manufacture of an Improved Photographic Printing Paper or the like.
Year: 1896

page_text: Date of Application, 31st Dec., 1896
Complete Specification Left, 7th Sept., 1897-Accepted, 9th Oct., 1897
PROVISIONAL SPECIFICATION.
The Manufacture of an Improved Photographic Printing Paper
or the like.
We, Dr. MAX JOLLES, and Dr. LEON LILIENFELD, both of 5 Turkenstrasse,
Vienna IX, in the Empire of Austro-Hungary, Chemists, do hereby declare the
nature of this invention to be as follows:-
In contradistinction to the albumeus, gelatines, etc. heretofore employed, it has
been discovered that proteids containing phosphorus can be successfully
used: Proteids containing phosphorus, known by the various names
of nucleoproteids, neucleoalbumens, nucleoglobulius, nucleins, paranucleo-
albumens, paranucleoproteids, paranucleoglobulins, paranucleins, etc. are proteids
which contain phosphorus in organic combination. The nucleoproteids, etc.
contain the phosphorus in the form of nucleic acid, an organic acid containing
phosphorus which is combined with egg albumen and gives as products, on splitting
up, the uric acid derivatives or allozur bases, guanine, xanthine, adenine,
hypoxanthine, etc. whilst the parauucleoproteids, etc. do not give the said alloxur
bases on splitting up.
To the nucleoproteids belong, for example, the nucleoalbumeus, nucleohistons,
nucleins, etc. obtained from animal and vegetable material. To the paranucleo-
proteids belong, for example, vitelline, ichthuline, casein, legumin, etc.
A suitable proteid or a mixture of several is dissolved in an alkali, alkaline
earth or a salt thereof capable of dissolving the proteid or the mixture of proteids
selected, either in the warm or cold state, and the concentration of the proteid
solution is brought to the required degree to suit the brilliancy and thickness
desired for the time being. For ordinary purposes a 10-12 per cent. solution of
the proteids in a 3-6 per cent. solution of the salts will be found suitable. The
addition of a small quantity of alcohol is advantageous under some circumstances.
The proteid employed can also be tanned with a solution of formic aldehyde,
tannic acid, alum, etc. The solution so prepared is salted in the ordinary way with
a haloid and either mechanically or manually coloured or left uncoloured, clarified
or filtered by known methods in either a hot, warm or cold state as desired, or
applied to a suitable paper in its orignial condition. For this purpose either fine
paper, free from woody fibres, or paper provided with a layer of chalk, baryta or
in general, any other paper suitable for photographic purposes can be employed.
The proteids containing phosphorus can also be used, either alone or mixed
together, or even in combination with other substances in order to apply them,.
with a salt of an alkaline carth (barium, calcium, etc.), to the desired paper to
serve as a foundation layer, on which a suitable coating is applied, this coating
being already sensitized or adapted to be subsequently sensitized.
The paper can be used satined or unsatined. The paper finally can receive
single or multiple coats of the proteid solution selected.
Our proteids give with halogen-silver salts, with correctly chosen concentrations.
of the proteid and silver solution and correct proportions of added salt, emulsiona

page_text: which when applied to paper give a highly sensitive, durable and brilliant copying
or printing paper.
Our improved proteids can, if desired, be used with albumen, gelatine, celloidin,
collodion or other known materials suitable for the purpose.
Dated the 31st day of December 1896.
D. YOUNG & Co.,
11 and 12 Southampton Buildings, London, W.C.,
Agents for the Applicants.
COMPLETE SPECIFICATION.
The Manufacture of an Improved Photographic Printing Paper
and the like.
We, Dr. MAX JOLLES, and Dr. LEON LILIENFELD, both of 5 Turkenstrasse,
Vienna IX, in the Empire of Austro-Hungary, Chemists, do hereby declare the
nature of this invention and in what manner the same is to be performed to "be
particularly described and ascertained in and by the following statement:-
In contradistinction to the albumens, gelatines, etc., heretofore employed, it has
been discovered that proteids in which phosphorus is present can be successfully
used. Proteids containing phosphorus, known by the various names of nucleo-
proteids, nucleoalbumens, nucleoglobulins, nucleins, paranucleoalbumens, para-
nucleoproteids, paranucleoglobulius, paranucleins, etc., are such proteids contain-
ing phosphorus in organic combination. The nucleoproteids, etc. contain the
phosphorus in the form of nucleic acid, an organic acid containing phosphorus
which is combined with egg albumen and gives as products, on splitting up, the
so-called alloxur or xanthine bases, guanine, xanthine, adenine, hypoxanthine, etc.
whilst the paranucleoproteids, etc., do not give the said alloxur or xanthine bases
on splitting up.
To the nucleoproteids, belong, for example, the nucleoalbumens, nucleohistons,
nucleins, etc. obtained from animal and vegetable material. To the paranucleo-
proteids belong, for example, vitelline, ichthuline, casein, legumin, etc.
A suitable proteid or a inixture of several is dissolved in an alkali, alkaline earth.
or a salt thereof capable of dissolving the proteid or the mixture of proteids
selected, either in the warm or cold state, and the concentration of the proteid
solution is brought to the required degree to suit the brilliancy and thickness
desired for the time being. For ordinary purposes a 10-12 per cent. solution of
the proteids in a 3-6 per cent. solution of the salts will be found suitable. The
addition of a small quantity of alcohol is advantageous under some circumstances.
The proteid employed can also be tanned with a solution of formic aldehyde,
tannic acid, alum, etc. The solution so prepared is salted in the ordinary way with
a haloid and either mechanically or manually coloured or left uncoloured, filtered
through paper, flannel, leather, hemp, or the like or by known methods in either.
a hot, warm or cold state as desired, or applied to a suitable paper in its original
condition. For this purpose either fine paper, free from woody fibres, or paper
provided with a layer of chalk, baryta or in general, any other paper suitable for
photographic purposes can be employed. The proteids containing phosphorus can
also be used either alone or mixed together, or even in combination with other
substances in order to apply them, with a salt.of an alkaline earth (barium,
calcium, etc.), to the desired papers to serve as a foundation layer, on which à
suitable coating is applied, this coating being already sensitized or adapted to be.
subsequently sensitized.
i

page_text: The paper can be used satined or unsatined. The paper finally can receive
single or multiple coats of the proteid solution selected:
Our proteids give, with halogen-silver salts, with correctly chosen concentrations
of the proteid and silver solution and correct proportions of added salt, emulsions
which, when applied to paper, give a highly sensitive, durable and brilliant
copying or printing paper.
Our improved proteid can, if desired, be used with albumen, gelatine, celloidin,
collodion or other known materials suitable for the purpose.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
First. In the manufacture of photographic printing paper, the use of proteids
in which phosphorus is present, or derivatives of such proteids, substantially as
hereinbefore described.
Second. A new industrial product, consisting of photographic printing. paper
made with proteids containing phosphorus, or derivatives of such proteids,
obtained from any source, used either separately or mixed with one another, or in
combination with albumen, gelatine, celloidin, collodion or other materials
suitable for the purpose.
Dated this 7th day of Santambon 100%
D. YOUNG & Co.,
11 and 12 Southampton Buildings, London, W.C.,
Agents for the Applicants.