Improvements in or relating to Printing in Several Colours by One Impression.
Year: 1894

page_text: Date of Application, 25th Oct., 1894
Complete Specification Left, 19th Apr., 1895-Accepted, 15th June, 1895
PROVISIONAL SPECIFICATION.
Improvements in or relating to Printing in Several Colours by
One Impression.
I, FRANK BARNWELL of 118 Everton Road, Manchester in the County of
Lancaster, Inventor, do hereby declare the nature of this invention to be as
follows:-
This invention relates to printing in several colours by one impression of a single
form.
It consists in providing the inking device with parallel bands or strips of different
coloured and properly distributed inks, and, to prevent the inks in these bands or
strips from flowing sidewise, they are chemically treated, whereby the colours are
made antagonistic to each other, so that a very large number of impressions may
be taken without the colours changing their position or blending with one
another.
To effect this result, the ordinary printing inks of commerce are treated, firstly,
by mixing with a composition composed of castor oil, ipecacuanha, spirits of
turpentine, glycerine, oil of tar, liquid ammonia F.F.F. in suitable proportions,
until the ink is the right consistency for using: secondly, by adding a small
quantity of sulphuric ether and chloroform, also of tincture of myrrh, alcohol,
spirits of ammonia (arom.) and balsam copaiba sufficient to cover the surface of the
After leaving for
ink to be used, but not mixing these ingredients with the ink.
about 2 minutes, any remaining liquid is passed off, and the ink is ready for use.
The ink thus chemically treated is applied to the form, after which an impression
in two or more colours is taken therefrom.
I have described the way in which I prefer to carry my invention into effect,
but it is obvious that, once given the general idea, alterations may be made in the
ingredients specified, some being omitted or others added.
The invention may be applied also to lithographic printing in colours, without
injury to the transfers or the stone. The presses can be run at practically the
same speed as when printing in one colour.
I of October 1801
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.
Improvements in or relating to Printing in Several Colours by
One Impression.
1, FRANK BARNWELL of 118 Everton Road, Manchester, in the County of
Lancaster, Inventor, 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 :-
This invention relates to printing in several colours by one impression of a single

page_text: It consists in providing the type inking device with parallel bands or stripes of
different coloured and properly distributed inks, and, to prevent the inks in these
bands or stripes from flowing sidewise, they are chemically treated, whereby the
colours are made antagonistic to each other, so that a very large number of
impressions may be taken without the colours changing their position or blending
with one another.
To effect this result, the ordinary printing inks of commerce are treated with the
following mixtures or compounds :
MIXTURE No. 3.
Aromatic spirits of ammonia 1 drachm, liquid ammonia 7 drachms, ipecacuanha
10 drops.
A suitable quantity of No. 1 is mixed with ordinary printing inks of the colours
required to be used until the ink is brought to a consistency of a thick syrup. Next
a few drops of Nos. 2 and 3 are added, sufficient to cover the surface of the ink to
be used, but not mixing these latter ingredients with the ink, the ether and
chloroform tending to keep the ink from spreading. After leaving the chemicals
to do their own work for about two minutes, pour off any remaining liquid there
may be and the ink is ready for use.
The workman then supplies the ink distributing roller with inks of the desired
colour which have been chemically treated in the manner described, thus for
example he may spread on the distributing roller a little red ink sufficient to make
a band thereon of a width corresponding to the size of type on the line to be
printed in red, then putting on the roller enough say green ink to make a band on
the roller of a width equal to the size of type in the line that is to be printed in
green and so on. The masses of different coloured inks may be contiguous or at
a distance apart. If contiguous it will be found that the different coloured inks
will not mix together but will each keep its own place and when the press or
machine has been worked to thoroughly distribute the inks, and the type inking
rollers have been provided with ink from the ink plate on which the colours appear
in parallel stripes, the rollers will show a series of bands of different colours
according to the number of differently coloured inks used, and then the different
lines of type in the form will be inked with different coloured inks and sheet
be printed at one impression of oue form in many different colours. Sheets can
thus be printed in a great variety of different colours, and the ordinary one
colour printing presses or machines may be used to do the work at substantially the
same cost as one colour printing.
When once treated as described, the ink is always good and can be used at any
time without any further use of the chemicals.
By my invention the different colours will not mix, whereas in all other methods
heretofore tried, the colours immediately on touching each other commence to
blend and the longer the machine runs the worse they mix, so that a red and a
green running side by side will make a dirty brown where the colours mingle.
By my process all this is prevented as the colours do not mix.
I have described the way in which I prefer to carry my invention into effect,
but it is obvious that once given the general idea, alterations may be made in
the ingredients specified, some being omitted or others added or the proportions

page_text: somewhat varied, the object being to prevent the ink flowing sideways. The
invention may be applied also to lithographic-printing in colours without injury
to the transfers or the stone. The presses or machines can be run at practically
the same speed as when printing in one colour.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
-
1. The improvement in printing in several colours at one impression of a single
form, which consists, first, in providing the inking device with parallel bands or
stripes of properly distributed inks chemically treated to prevent the inks in those
bands or stripes from flowing sideways; second, in inking the form with the said
inking device provided with bands or stripes of ink so chemically treated, and
lastly, in taking the impression, each of said steps being in substance substantially
as set forth.
2. The improvement in printing in colours, which consists first in treating the
ordinary printing inks of commerce with castor oil, spirits of turpentine, oil of
tar, glycerine, balsam of copaiba, sulphuric ether, chloroform, aromatic spirits
of ammonia, liquid ammonia and ipecacuanha; second in applying the inks thus
more colours
treated to the form, and third in taking an impression in two or
from this form substantially as and for the purpose set forth.
3. The composition adapted for treating printing inks, consisting of a mixture of
castor oil, spirits of turpentine, oil of tar, glycerine, balsam of copaiba, sulphuric
ether, chloroform, aromatic spirit of ammonia, liquid ammonia, ipecacuanha in
about the proportions above set forth, substantially as and for the purpose herein-
before described.
10th In of Anvil 1805
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, and London, Patent Agents.