A Process for Printing on Celluloid, Ivory, Horn, and like substances.
Year: 1891

page_text: Date of Application, 31st Mar., 1891
Complete Specification Left, 28th Nov., 1891-Accepted, 2nd Jan., 1892
PROVISIONAL SPECIFICATION.
A Process for Printing on Celluloid, Ivory, Horn, and like
substances.
I, ARTHUR ALAIN CONSTANT DE COETLOGON of 80 Rue Taitbout, Paris,
France, Proprietor, do hereby declare the nature of this invention to be as
follows:-
Celluloid, ivory, horn and like substances cannot be printed on with such inks as
are used for letter-press and lithographic printing which do not penetrate, do not
readily dry on those surfaces and do not adhere to them. My invention relates to
the preparation of these surfaces in such a way that they can be printed on with
black or coloured inks. For this purpose I form a fine close grain on those parts
of the surface that are to be printed on, doing this in any known manner, as, for
example, by sand blast, and I wash with water or spirit to remove all foreign
matter. I then cover the surface with a varnish consisting of 2 parts of thick
varnish, I part white copal varnish and 1 part of rectified essence of turpentine or
the like, and I carefully wipe off all surplus, causing the varnish to penetrate the
pores, after which I powder over the surface with a mixture of equal parts of
sulphate of magnesia and sulphate of baryta.
After several hours, I wipe and polish the surface which is then capable of being
perfectly printed on with black or coloured inks, with which may be combined
metallic or other powders.
Dated this 31st day of March 1891.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
A Process for Printing on Celluloid, Ivory, Horn, and like
substances.
I, ARTHUR ALAIN CONSTANT DE COETLOGON, of 80 Rue Taitbout, Paris,
France, Proprietor, 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 :-
It has hitherto been practically impossible to print neatly and clearly with
printers ink upon celluloid, ivory, horn, and like substances, and to make such
impressions adhere thereto, the fatty nature of the ink preventing it from pene-
trating into the substance of the surface, and, in particular, in the case of celluloid,
the materials of which it is composed prevent the ink from drying. In addition,
by the lithographic or typographic pressure upon the unyielding surface of celluloid,
the fatty ink upon the stone or electrotype becomes spread out and blurred so that
it is not possible to obtain on this class of materials clear, sharply defined
impressions similar to those which are obtained on paper.
My invention relates to the preparation of the surfaces of such materials in such
a way that they can be printed on effectually and rapidly with black or colored
inks, with the same perfection as can be obtained with paper.
For this purpose I produce upon the smooth surface of the celluloid or other
material, a fine close grain, either by hand or by mechanical means, such as the
sand blast, leaving certain parts that do not receive impressions smooth if neces-
sary. The surface is then washed either with water or with alcohol, for removing
[Price 4d1l

page_text: from the minute recesses thus formed all matter that might obstruct the printing
process.
I then cover the grained surface with a varnish consisting of two parts of fatty
varnish one part of white copal varnish, and one part of rectified essence of
turpentine or lavender &c.
The varnish is rubbed off the surface, whereby it is made to penetrate effectually
into the recesses formed by the graining while it is removed from the surface.
I then cover the surface thus prepared with an impalpable powder composed of
equal parts of sulphate of magnesia and sulphate of baryta, which powder is
allowed to remain for some hours, after which the surface is thoroughly wiped and
is subjected to any known satining process.
By the above described means I obtain a very thin and diaphanous covering
which is in a measure embedded in the exceedingly fine pore-like indentations of
the surface, and which has a great affinity for fatty printers ink, this being
readily absorbed and retained with the same power of adhesion and elasticity as
with paper, so that the prepared surface can be printed upon without any spreading
or blurring of the lines, and with the most delicate tints.
In incorporating with the powder above mentioned a coloring matter, or metallic
powder, the surface may have any desired coloration or appearance imparted to
it, and which will not rub 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 :-
The herein described process for preparing celluloid, horn, ivory and similar
substances for receiving impressions with fatty inks, which consists in first forming
a grain on the surface to be printed upon, then coating the same with varnish and
with powder, and after wiping the surface subjecting the same to a satining process,
substantially as described.
Dated this 28th day of November 1891
ABEL & IMRAY,
Agents for the Applicant.