AN IMPROVED METHOD OR PROCESS OF PRODUCING PRINTS OR TRANSFERS OF PHOTOGRAPHIC PICTURES
Year: 1883

page_text: LETTERS PATENT to Eugenio de Zuccato of Charterhouse Street in the City
of London for an Invention of "AN IMPROVED METHOD OR PROCESS OF
PRODUCING PRINTS OR TRANSFERS OF PHOTOGRAPHIC PICTURES"
"AN
PROVISIONAL SPECIFICATION left by the said Eugenio de Zuccato at the
Office of the Commissioners of Patents on the 28th August 1883.
EUGENIO DE ZUCCATO, of Charterhouse Street in the City of London,
IMPROVED METHOD OR PROCESS OF PRODUCING PRINTS OR TRANSFERS
PHOTOGRAPHIC PICTURES "
•
OF
My invention relates to an improved method or process of producing prints or
transfers of photographic pictures and is carried into practice in the following
manner, that is to say-I take what is known as a "Woodbury-type relief" of
the picture desired to be printed or transferred, and I lay this relief upon a sheet
of paper or other analogous or suitable material, and on the other side of this paper
or other material is laid a roughened, grained, stippled, or lined plate which has
been inked on its roughened side with printer's ink. The roughened side of the
plate must be next the paper or other analogous. material. I then press all these
together by any suitable mechanical means, whereupon the printers ink will "set
off" or be impressed on the paper or other analogous material and form a grained,
stippled, or lined picture or ink-photo-print corresponding to the Woodbury-type
relief. This grained, stippled, or lined image or picture may be then transferred to
metal or lithographic stone by any method well known to printers; or in some
cases I prefer to photograph the grained, stippled, or lined image or picture and to
make a transfer therefrom by any methods well known to photo-lithographers and
photo-zincographers.
The term "Woodbury-type relief" is well understood by photographic printers
but to prevent any misapprehension I desire to state that I mean a gelatine film
in which the varying tints of a photograph are represented by varying thicknesses
of gelatine.
Those materials which, for the purposes of my invention, I regard as analogous
to paper are such flexible materials as will readily take an impression in printers'

page_text: ink. Among these may be mentioned tracing cloth or tracing paper, tin or other
metallic foil, sheet gelatine, gold beaters' skin, or other tissue.
By a grained, stippled, or lined plate I mean a plate of any moderately hard
material of which at least one surface is roughened or grained or lined. As
examples I may on the one hand mention a metal plate or block of wood which
has been grooved or stippled, a cast of this plate or block in ebonite, dry gelatine,
or celluloid; and on the other hand a sheet of emery cloth or sand paper.
By printers' ink I mean any ordinary printing ink in which a pigment is
incorporated with an oily vehicle; or such similar fatty inks as are especially made
and sold for the purposes of transferring. When I re-photograph the ink-photo-
print I sometimes use an ink of which the vehicle is glycerine, mucilage, or similar
substance. It must be well understood that in all cases the printers' ink must not
be allowed to thoroughly indurate before the inked surface is usod.
Soft wax, fat, varnish, soap, or a mixture of these may in some cases replace ink
when the image is to be transferred to stone or metal.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Eugenio de Zuccato in the Patent Office on the 28th February
1884.
EUGENIO DE ZUCCATO, of Charterhouse Street, in the City of London,
METHOD
OR PROCESS
"
IMPROVED
PHOTOGRAPHIC PICTURES
OF
PRODUCING
PRINTS OR TRANSFERS
<< AN
ОР
My invention relates to an improved method or process of producing prints or
transfers of photographic pictures, and is carried into practice in the following
manner, that is to say, I take what is known as a "Woodbury-type relief" of the
picture desired to be printed or transferred, and 1 lay this relief upon a sheet of
paper or analogous material, and on the other side of this paper or other material
Í place a roughened, grained, stippled or lined plate which has been inked on its
roughened side with printers' ink. The roughened side of the plate must be next
the paper or analogous material. I then press the said relief, the paper, and the
inky roughened plate together by suitable mechanical means, whereupon the
printers' ink will "set off" or be impressed, on the paper or analogous material, and
thus form a grained, stippled or lined picture or ink-photo-print corresponding
to the "Woodbury-type relief." This grained, stippled or lined image or picture
may be transferred to metal or lithographic stone by any method known to
printers; or the grained, stippled, or lined iinage or picture may be photographed
and a transfer made therefrom by any methods well known to photo-lithographers
and photo-sincographers.
The term "Woodbury-type relief" is well understood by photographic printers,
but to prevent any misapprehension I desire to state that I mean a gelatine film
in which the varying tints of a photograph are represented by varying thicknesses
of gelatine, or a substitute for the said "Woodbury-type relief" such as a mould or

page_text: Those materials which,.for the purposes of my invention, I regard as analogous
to paper are such thin, flexible or yielding materials as will readily take an
impression in printers' ink. Among these may be mentioned tracing cloth, tin or
other foil, gold beaters' skin, silk fabric, or other suitable tissue.
By a grained, stippled or lined plate, I mean a plate of any moderately hard
material of which at least one surface is roughened, grained, or lined. As examples
I may, on the one hand, mention a metal plate or block of wood which has been
grooved or stippled, a cast of this plate or block in ebonite, dry gelatine, or cellu-
loid; and, on the other hand, a sheet of emery cloth, sand-paper, or bookbinders'
cloth.
By printers' ink I mean any ordinary printing ink in which a pigment is
incorporated with an oily vehicle; or similar fatty inks such as are especially
made and sold for the purposes of transferring. When I re-photograph the ink-
photo-print, I sometimes use an ink of which the vehicle is glycerine, mucilage, or
a similar substance.
Soft wax, fat, varnish, soap, or a mixture of these materials may, in some cases,
replace, ink, when the image is to be transferred to stone or metal.
Having thus fully described my said invention and the manner of performing the
same I wish it understood that I claim :—
The production of a picture or transfer by pressing paper or other suitable
material against an inked-roughened plate, or the like, by means of a "Woodbury-
type relief," substantially as described.
In witness whereof I the said Eugenio de Zuccato have hereunto set my hand
and seal this Twenty seventh day of February in the year of our Lord One thousand
eight hundred and eighty four
FUC DE ZECCATO (0)