An Improvement in Decorative Printing on Prepared Paper.
Year: 1894

page_text: Date of Application, 28th Mar., 1894
Complete Specification Left, 10th Dec., 1894-Accepted, 12th Jan., 1895
PROVISIONAL SPECIFICATION.
An Improvement in Decorative Printing on Prepared Paper.
We, FRANÇOIS AUGUSTE DEGROOTE, and ACHILLE ALBERT DURANT DES
AULNOIS, both of 16 Rue Drouot, Paris, France, do hereby declare the nature
of this invention to be as follows:-
Attempts have been made to apply to decorative printing the processes known as
decalcomanie, employing paper prepared in various ways with dextrine. The
results obtained are not satisfactory because the irregularities of surface resulting
from the printing remain visible and injure the effect to the eye. Our invention
relates to means of avoiding this objectionable result and producing a picture which
cannot be distinguished from one painted by hand. For this purpose we prepare
the colour of the required tint, make it up as a paste with half boiled linseed oil,
and then thin it down with liquid linseed oil. We afterwards thicken it with
strong oil, adding when necessary a suitable siccative, if in the printing it does not
regularly and smoothly cover the paper.
The pigment thus prepared is applied by printing in the usual way.
Dated this 28th day of March 1894
ABEL & IMRAY,
Agents for the Applicants.
We, FRANÇOIS AUGUSTE DEGROOTE, and ACHILLE ALBERT DURANT DES
AULNOIS, both of 16 Rue Drouot, Paris, France, 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: -
Attempts have been made to apply to decorative printing the processes known as
decalcomanie, employing paper prepared in various ways with dextrine. The
results obtained are not satisfactory because the irregularities of surface resulting
from the printing remain visible and injure the effect to the eye. Our invention
relates to means of avoiding this objectionable result and producing a picture which
cannot be distinguished from one painted by hand. For this purpose we prepare
the colour of the required tint, make it up as a paste with half boiled linseed oil,
and then thin it down with liquid linseed oil. We afterwards thicken it with strong
oil, and varnish adding when necessary a suitable siccative, if in the printing it does
not regularly and smoothly cover the paper.
The pigment being thus prepared, it is then employed for printing in the
ordinary manner, and there is obtained an impression which is in every way similar
to a carefully executed hand painting.
In certain cases, and in particular when the impressions are to be applied to
glass in imitation of stained glass windows or panels or for similar purposes, which
require a certain amount of elasticity, or in which the pigment is required to adhere
without an intervening medium, it is advantageous to modify the pigment by adding
Price 8d.1

page_text: thereto caoutchouc and gums such as those of almacia and Sierra Leone, previously
dissolved in a suitable solvent.
The following is for example a suitable mixture for the above purpose.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
In the preparation of coloured impressions on prepared paper, the employment
of a pigment prepared by mixing the colouring matter of the required tint firstly
with half boiled linseed oil, to form a paste, then thinning it down with ordinary
linseed oil, and then thickening it with strong oil with or without the addition of a
siccative, there being in some cases added to the mixture thus produced, a solution
of caoutchouc and of gums for imparting greater elasticity to the impression, in
particular when the transfer is effected upon glass and other non porous surfaces,
substantially as described.
Dated this 10th day of December 1894.
ABEL & IMRAY,
Agents for the Applicants.