A NEW OR IMPROVED PROCESS FOR REPRODUCING COLOURED PICTURES ON PORCELAIN AND STONEWARE
Year: 1884

page_text: I, HERBERT JOHN HADDAN, of the firm of Herbert and Company, Patent
Agents, of 67, Strand, in the City of Westminster, Civil Engineer, do hereby
declare the nature of said invention for A NEW OR IMPROVED PROCESS FOR
REPRODUCING COLOURED PICTURES ON PORCELAIN AND STONEWARE, to be as
follows:-
This invention relates to a process for reproducing coloured pictures on porcelain
and stone ware.
For this purpose a number of impressions corresponding to the number of the
colours of the picture to be reproduced, are made on paper by lithographic or
typographic printing in such manner that each impression is printed with one
colour only in its corresponding place on the picture. The impressions when still
fresh are then applied to the surfaces to be decorated by means of a brush in the
order corresponding to the shade of the colours, each colour being applied and burnt
in (separately) one after the other.
In the case of homogeneous colours two or more colours may be applied
consecutively and burnt in simultaneously according as the colours blend with
each other and according as this may be required by the harmony of colours of the
picture.

page_text: I, HERBERT JOHN HADDAN, of the firm of Herbert and Company, Patent
Agents, of 67, Strand, in the City of Westminster, Civil Engineer, do hereby
declare the nature of my invention for A NEW OR IMPROVED PROCESS FOR
REPRODUCING COLOURED PICTURES ON PORCELAIN AND STONEWARE, and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
.
The production of many-coloured images on porcelain and stoneware, is sometimes
effected by means of transfers in order to avoid the expensive painting on porcelain.
It is known, however, that the images treated in this manner, frequently lose their
sharpness and clearness in burning, owing to the unequal blending of the different
mineral colours.
Nevertheless, the painting on porcelain may be completely replaced by burning
in the various mineral colours separately, in a manner analogous to the well-known
chromo lithographic process.
This principle is the base of the present invention, which relates to a process for
printing or reproducing coloured pictures, such as chromo-lithographs, on porcelain
and stoneware.
For this purpose a number of impressions, corresponding to the number of the
colours of the picture to be reproduced, are made on paper by lithographic or typo-
graphic printing, in such manner, that each impression is printed with one colour
only in its proper place.
The impressions, when still fresh, are then transferred one after the other to the
surfaces to be decorated, by means of a brush, and in the order corresponding to
the shade of the colours, each colour being burnt in (separately) immediately after
its transfer.
In the case of homogeneous colours, two or more colours may be transferred
consecutively and burnt in simultaneously, according as the colours blend with
each other, and according as this may be required by the harmony of colours of
the picture.
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 application of the chromo-lithographic and chromo-typographic process for
producing coloured images on porcelain and stoneware, in combination with the
separate burning-in of the different colours.