Year: 1898

page_text: [Communicated from abroad by INTERNATIONAL COLOR-PHOTO COMPANY, a
Corporation organized and existing under the laws of the State of New
Jersey, and having its place of business at New Jersey, United States of
America.]
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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 the production of coloured pictures by photography
and is illustrated in the accompanying drawings in which:
Figure 1 represents the invention when embodied on a paper having parallel
alternating different lines;
Figure 2 represents the same when the paper is provided with alternating lines
of coloured dots;
Figure 3 represents the same when the paper is provided with the seven
primary colours of the spectrum recurring in their regular order of sequence;
Figure 4 represents the same as Figure 3, with the addition of the transverse
black lines;
Figure 5 represents the same when the paper is provided with alternating red
and blue lines crossed transversely with yellow lines forming with the red, at
the intersection, orange dots or squares, and with the blue, green dots or squares:
Figure 6 represents the same as Figure 1, except that the lines are rounded
in waving or curved order;
Figure 7 represents the same when the paper is provided with a
arrangement of dots or squares from that shown in Figure 2; and
different
Figure 8 represents the same when the paper is provided with alternating
zig-zag lines of different colours.
While I have represented in the drawings and described above a number of
different patterns in which my invention can be embodied, I do not limit myself
to these special patterns, as it will be apparent from the description of my inven-
tion and process-hereinafter given in detail-that the same can be embodied
and carried out through an almost infinite variety of patterns or arrangement of
the colours employed.
In making my improvements in the art of producing coloured pictures by the
aid of photography, I take paper, opaque white celluloid, or other similar material

page_text: suitable for the purpose, and upon its face rule separate fine alternate lines of
such dyes or colours as to correspond substantially with the fundamental colours
of the spectrum--say, reddish orange, yellowish green and violet blue-in the
order of the spectrum, or upon the face of which I place small alternate dots,
squares or figures in any manner sufficiently close to present to the eye a neutral
surface. The colour of each dye is preferably of such depth as to absorb the kind
of light transmitted by the others. More than three colours in the dots or lines
or figures may be used, such as the complementary colours red and green, blue
and yellow, or the whole series of the spectrum. Such a mixture of colours
placed side by side follows the laws of the mixture of lights and not of pigments.
After the paper or similar material has been provided with its proper colours,
as above explained, it may be covered with a coating of gelatine and with a
sensitizing material, such as is used in sensitizing the paper now used for photo-
graphic purposes, so that the lines, figures or patterns of colours will be covered
with the sensitizing material. If desired, however, the paper may be first sensi-
tized and the lines or patterns of colour or dyes afterwards applied. After being
thus prepared, it forms what is ordinarily called printing paper adapted to be
printed upon either through a negative, or by the use of metal or glass half tone
plate in a press with printer's ink. It is intended to be used where the negative
is produced by the use of a transparent screen arranged in the camera before
the sensitized surface of a dry plate, which screen it will be understood must of
course be provided with lines, dots, squares, figures or patterns corresponding to
those on the printing paper, which causes the negative to be impressed with
similar lines, figures or patterns, and in printing from it the paper must first
be placed upon it in such position that its lines, figures and patterns register
with similar lines, figures and patterns on the negative.
For the purpose of printing on a mechanical press, I make a photographic
screen, say, such a one as is ruled or printed in the alternated lines aboye, one
hundred to the inch of each colour, or three hundred to the inch of all-one
coloured line to transmit reddish orange, the next yellowish green, the next violet
blue, and so on in alternation; or, in other words, colours approximating to the
recognized fundamental colours of the spectrum. The negative made in the use
of this screen will be in lines, opaque where the coloured light has been trans-
mitted and transparent where it has been absorbed. From this negative I make
a metal or glass half tone plate by any of the usual methods. This half tone
plate is divided on its surface by these manipulations in alternate raised lines,
each corresponding to the amount of colour absorbed by the coloured lines of
the screen or plate in the camera; or, in other words, to the non-action of light
on the sensitized photographic plate, the depressions corresponding in width
to the amount of light affecting the sensitized plate of the negative. A print
taken from this half tone plate upon white paper will show, with black ink, a
lined black and white picture, or, where dots and figures are used, it will show a
black and white picture corresponding to the pattern.
In order to print a coloured picture, I take a sheet of the printing paper,
prepared as above described, containing the coloured lines, dots, figures, or
patterns corresponding to the screen and negative, and to which the half-tone
printing plate also corresponds in register, and print upon it, by means of the
half-tone plate, a black or dark ink, making it register, so that the black ink
will cover to its proper degree the colours which were absorbed in the camera
by the coloured plate or screen, and leave uncovered or exposed those colours
whose corresponding colours in the object to be photographed have impressed
themselves on the negative in the camera. The blacks are formed by the black
ink, the whites by the combination of the coloured lines, dots or figures, not
covered by the ink, and the intermediate mixture of colours by the combination
of such colourd lines, dots, figures or patterns as are not entirely covered r
obscured.

page_text: For convenience, I will speak in the claims of the lines, dots or figures, as
patterns, intending to use the term in a sufficiently comprehensive sense to cover
the uses of either when employed in such proportions, such degree of fineness,
and such relative arrangement as to produce the results described.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondents, I declare that what I claim is :-
1. A white or light-coloured material--as paper-bearing a pattern symmetrical
as to a plane in the primary or approximately primary colours used, and in such
dyes or pigments as have suitable selective light absorption properties, sub-
stantially as described.
2. A white or light-coloured material-as paper-provided with coloured sub-
stances arranged according to regular recurring patterns of such colours and
proportions as to cause each to absorb such colours as are transmitted by each
and all the others, substantially as described.
3. A white or light-coloured material-as paper-provided with red, green and
blue coloured substances arranged according to regularly recurring patterns,
symmetrical as to a plane, such colours being of such kinds and in such propor-
tions as to present to the eye a white or neutral tint, substantially as described.
4. A white or light-coloured material-as paper-provided with red, green
and blue coloured substances arranged according to regularly recurring patterns
in regular recurring alternate order and symmetrical as to a plane, such colours
being of such kinds and in such proportions as to present to the eye a white or
light-coloured neutral tint, the patterns being covered with a photographic sensi-
tive material, substantially as described.
5. A white or light-coloured material-as paper-provided with differently
coloured substances corresponding to complementary colours of the spectrum,
as red and green, blue and yellow, arranged according to regular recurring
patterns as dots, lines, figures--in regularly recurring alternate order and
symmetrical as to a plane, such colours being of such kinds and in such propor-
tions as to present to the eye a white or light-coloured neutral tint, the patterns
being covered with a photographic sensitive material, substantially as described.
6. The process of making coloured pictures, which consists in making a photo-
graphic negative in regular patterns-as dots, lines, figures--by the action of
red, green and blue coloured lights upon the sensitive plate in such patterns,
then making therefrom a corresponding half-tone plate, printing type or surface,
then printing from such printing surface upon material prepared to correspond
in colours and to register in form and dimensions with the patterns of coloured
lights acting upon the negative and with the patterns upon the printing surface,
whereby the colours corresponding to those that do not act upon the negative
will be obscured or covered, while such proportion of coloured patterns as corre-
sponds to the action of coloured lights upon the negative sensitized plate will
be left visible, substantially as described.
7. The process of making coloured pictures, which consists in printing upon a
material prepared to correspond in colours and register in form and dimensions
with the patterns of red, green and blue coloured lights acting upon a negative,
whereby the colours corresponding to those that do not act upon the negative
will be obscured or covered, while such proportion of coloured patterns as corre-
sponds to the action of the coloured lights upon the negative sensitized plate will
be left visible, substantially as described.
S. The process of making coloured pictures, which consists in covering or
obscuring by means of a positive picture the colours upon a material prepared to
correspond in colour and to register in form and dimensions with the patterns
of red, green and blue coloured lights acting upon a negative, whereby the colours
corresponding to those that do not act upon the negative will be obscured or

page_text: covered, while such proportion of the coloured patterns as corresponds to the
action of coloured lights upon the negative sensitized plate will be left visible,
substantially as described.
Dated this 27th day of September 1898.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: FILE
BE
高露
TH
BULENI UN S
裏
B