Year: 1886

page_text: Date of Application, 16th Aug., 1886.
Complete Left, 16th May, 1887.
Complete Accepted, 17th June, 1887.
I JOHANN CONRAD HÖSCH of the City of Vienna in the Empire of Austria, Manu-
facturer, do hereby declare the nature of this Invention to be as follows :-
My invention relates to a photographic process for printing in colors by means of
which said process exact colored copies of objects of all kinds such as living objects,
oil paintings, aquarells and other colored original objects can be produced.
As an example of how my process may be employed let it be assumed that it is
desired to reproduce a water color painting in 6 different colors, that is to say, one
yellow, one red, one blue, one gray, one flesh, and one intensifying or finishing color.
In such a case the process would be as follows-A photographic negative would be
first taken from the original water color drawing and from this original negative
5 diapositives, or 5 glass positive pictures of exactly the same size would be made.
These glass positives form the basis of the process of photographic color printing.
I next prepare the glass positives by means of transparent and opaque varnishes, that
is to say, I apply the whole, half and finer tints to such parts as are not to be seen or
only slightly to be seen in each one of the above named colors for the production of a
colored original picture. I therefore correct the glass positives for each one of my
I now
colors, one each for the yellow, red, blue, and flesh colors and finishing tone.
transfer the so corrected glass positives in the ordinary photographic manner into
glass negatives and retouch the so inversed parts. I cover all the parts, surfaces and
lines, which are reproduced from the negative first taken and not required for the
special color, that is to say, I provide those parts which are transparent with the
necessary coverings to such extent as the yellow, red, blue, or flesh color, and the
finishing tone of the original makes it requisite in order to reproduce the colors
contained in the said original. I use the first and direct photographic negative for
the gray plate, as a deepening of the tone for this plate or the transformation into
positive and negative is not necessary. I will then have a plate in which all has been
obscured but that which is to print or reproduce the yellow color another in which
all but that to reproduce the blue has been obscured and so on throughout the various
plates. When these negatives are used for producing gelatine printing plates and

page_text: these plates are printed in the corresponding colors, the 6 single printings are
produced.
I copy these 6 negatives on gelatine printing plates and print the sheet yellow
by means of the negative provided with yellow color. This yellow print is now
placed in customary printing press and printed with flesh color from the plate pro-
vided with this color. The sheet so printed with yellow and flesh colors is again
printed with the plate provided with red, this sheet provided with the yellow, flesh,
and red colors is again printed with blue from the plate for the said blue color and
the picture produced with these four colors. The so prepared sheet is now printed
with gray from the negative printing plate containing the gray color and then with
the tint applied to the last printing plate for intensifying or finishing the colors so as
to produce the complete picture.
It will be evident from the foregoing that the successive printing of the sheet with
the various negative plates provided with the appropriate colors will produce an exact
copy of the original photograph in the colors of the natural object.
Dated this 16th day of August 1886.
PHILIP M. JUSTICE,
Associate Agent.

page_text: I, JOHANN CONRAD HÖSCH of the City of Vienna in the Empire of Austria, Manu-
facturer, 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 :-
My invention relates to a photographic process for printing in colors by means of
which said process, exact colored copies of objects of all kinds such as living objects,
oil paintings, aquarells and other colored original objects can be produced.
As an example of how my process may be employed, let it be assumed that it is
desired to reproduce a water color painting in 6 different colors, that is to say, one
yellow, one red, one blue, one gray, one flesh and one intensifying or finishing color.
In such case the process would be as follows :-
:-
A photographic negative would be first taken from the original water color drawing
and from this original negative 5 diapositives, or glass, positive pictures of exactly
the same size would be made. These glass positives form the basis of the process of
photographic color printing. I next prepare the glass positives by means of trans-
parent and opaque varnishes, that is to say, I apply the whole, half and finer tints to
such parts as are not to be seen or only slightly to be seen in each one of the above
named colors for the production of a colored original picture, I therefore correct the
glass positives for each one of my colors, one each for the yellow, red, blue, and flesh
colors and finishing tone.
I now transfer the so corrected glass positives in the ordinary photographic manner
into glass negatives and retouch the so inversed parts. I cover all the parts, surfaces
and lines, which are reproduced from the negative first taken and not required for
the special color, that is to say, I provide those parts which are transparent with the
necessary coverings to such extent as the yellow red, blue, or flesh color and the
finishing tone of the original makes it requisite in order to reproduce the colors
contained in the said original. I use the first and direct photographic negative for
the gray plate as a deepening of the tone for this plate, or the transformation into
positive and negative is not necessary. I will then have a plate in which all has been
obscured but that which is to print or reproduce the yellow color, another in which
all but that to reproduce the blue has been obscured, and so on throughout the entire
plates. When the negatives are used for producing gelatine printing plates and
these plates are printed in the corresponding colors, the 6 single printings are
produced.
I copy these 6 negatives on gelatine printing plates and print the sheet yellow by
means of the negative provided with yellow color. This yellow print is now placed
in the customary printing press and printed with flesh color from the plate provided
with this color.
The sheet so printed with yellow and flesh colors is again printed with the plate
provided with red, this sheet provided with the yellow, flesh, and red colors, is again

page_text: printed with blue from the plate for the said blue color and the picture produced with
these four colors.
The so prepared sheet is now printed with gray from the negative printing plate
containing the gray color and then with the tint applied to the last printing plate for
intensifying or finishing the colors so as to produce the complete picture.
It will be evident from the foregoing that the successive printing of the sheet with
the various negative plates provided with the appropriate colors will produce an exact
copy of the original photograph in the colors of the natural object.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, I declare that what I claim is :—
The herein before described process for reproducing colored copies of any desired
original, substantially as set forth.
PHILIP M. JUSTICE,
Associate Agent.