New or Improved Process for Producing Coloured and other Foils for Die Stamping or Printing.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
New or Improved Process for Producing Coloured and other Foils for
Die Stamping or Printing.
I, ERNST OESER, of Dresdenerstrasse 79, Berlin, in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
The colour foils hitherto used consisting of water, colouring matter, gelatine
and glycerine, have the disadvantage of staining and smearing the paper, leather,
fabric, or the like after having been used for making or stamping impressions
on these materials.
.
The object of this invention is the production of colour or metal foils which
do not possess this disadvantage. At the same time the process enables foils
having a pattern to be produced as for instance imitations of marble, wood or
the like.
The process is carried out in the following manner: If foils of the cheaper
colouring matters or of bronze are to be made, about to a litre of water:
5 to 10 grammes of isinglass and 10 to 15 grammes of glycerine are boiled
together. After these ingredients have been intimately mixed, if a white colour
is to be produced: 400 to 500 grammes of zinc-white or any other white colour
are added. If a transparent or shaded or coloured foil is to be produced, to the
mixture the necessary quantity of colouring matter is added and the whole well
mixed together. To this colour mixture is added in a lukewarm state about
30 grammes of albumen for the purpose of intimately combining the colour,
preventing staining, and to form for certain stamping processes a good quality,
by the heat of the press stamp, and to make the impression shine.
The substance thus made is then either by means of a brush or any other
device laid thinly upon a glass plate. The substance being dry it is stripped
off the plate by means of a scraper and this colour foil is used in the same
manner as hitherto, that is by spreading it out on the object to be stamped and
then stamping the pattern by means of a heated die. When the stamping has
been done the superfluous foil is brushed away and the stamping is finished.
In this manner for instance on dark or light paper, leather, silk, or other objects,
clear impressions can be made in any desired colour. If coloured foils of a dark
color or bronze are to be produced little or no zinc-white is used and the
respective colour or bronze is added directly to the mixture.
But if coloured foils of more costly colours or metals are to be produced, the
respective colour or metal mixed with a little dissolved albumen is first put on
the glass plate and after this has dried, a layer consisting of water, isinglass.
glycerine, albumen and a cheaper colour as in the previously mentioned com-
position is put and after being dry the whole is stripped from the plate in the
manner mentioned.
If the foil is to have the appearance of a stone or a certain kind of wood, the
respective colour with the respective pattern is first put on the plate and after
it is partially or entirely dry, a layer of the mentioned composition of cheaper
colour is added. A little albumen is added to the colour used for the pattern.

page_text: But the order can be reversed by first putting the cheaper colour composition
on the plate for a support and then, when this layer is dry, it is covered with
the metal or more valuable colour mixed with the binding matter, or a colour
pattern may be laid on.
Also a metal foil may be provided with a supporting layer. In this case a
composition as herein mentioned of a cheap yellow or red colour mixed with
water, isinglass, glycerine and albumen is spread on the glass plate and after this
layer is dry it is covered with albumen and the metal foi! is put thereon. When
the ground layer is dry the whole is stripped off the plate. The metal foil can
be put on the layer of composition when it is slightly set.
Dated this 1st day of December 1899.
HERBERT HADDAN & CO.,
Agents to Applicant.
New or Improved Process for Producing Coloured and other Foils for
Die Stamping or Printing.
.
I, ERNST OESER, of Dresdenerstrasse 79, Berlin, in the Empire of Germany,
Manufacturer, 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:―
Methods of producing color foils for stamping impressions on materials are
known, but the foils made according to these methods have the disadvantage
that in stamping with them the coloring matter not being sufficiently combined,
stains or smears the material, especially if the said foils are used for stamping
impressions on cloth, silk, leather and the like and the superfluous matter is
brushed off.
According to the present invention, in order to remove these disadvantages
and to obtain additional advantages, a proportion of albumen is added to the
mixture of water, isinglass, glycerine and coloring matter, and the coloring
particles are thus intimately combined, so that the color becomes lasting and
the foils do not stain, either in stamping or afterwards. At the same time
instead of coloring matter, bronze powder can be added and bronze foils thus
obtained. The quantity of albumen to be added depends partly upon the nature
of the color which the color foil is to receive. The quantity of isinglass also
depends upon the color of the foil. Practical tests have shown that with dark
colors more isinglass is necessary than with light color
The most suitable method is the following.
In about to a litre of water 5 to 40 grammes of isinglass and about 10
to 15 grammes of glycerine are boiled. To this solution the coloring matter is
added and the whole is thoroughly stirred so that the color is evenly distributed.
To this paste or paint, when luke-warm, about 20 to 40 grammes of albumen
are added for the purpose of intimately combining the color.
The substance thus produced is then either by means of a brush or any other
device laid thinly upon a glass plate. The substance being dry it is stripped
off the plate by means of a suitable scraper and this color foil is used in the
same manner as metal foils have been hitherto used.
If the foil is to be given the appearance of stone or a certain kind of wood,
the respective pattern can either be laid on first in substance similarly prepared
and covered when partially or entirely dry with the actual substance of which
the body of the foil consists, or the glass plate is covered with the substance
.

page_text: and the pattern produced on the latter afterwards. Of course, in stamping
with the foil either that side of it which was turned towards the glass plate or
the side which was turned away from the glass plate must form the outer surface,
as the case may be.
Color or bronze foils produced in this manner can be bent in any direction,
combine closely with the surface on which the impression is made and do not
stain or smear either during the impression or when the articles are in usė.
Impressions produced with these foils therefore retain their pure color until
the entire foil has been worn off.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what
I claim is:
1. A method of producing color or bronze foils by adding albumen to the
paste composed in the usual manner of dry coloring matter, isinglass, glycerine
and water, when in a luke-warm state, in order to render the color foil flexible
and to bind the coloring matter or bronze in the paste in such a manner that
the color foil will not stain or smear either in stamping or in use.
Dated this 29th day of June 1900.
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, W.C., London.