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
"
PROVISIONAL SPECIFICATION left by the said Eugenio de Zuccato at the
Office of the Commissioners of Patents on the 28th August 1883.
"AN
EUGENIO DE ZUCCATO, of Charterhouse Street in the City of London,
IMPROVED METHOD OR PROCESS OF PRODUCING PRINTS OR TRANSFERS OF
PHOTOGRAPHIC PICTURES
"
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 saturate a piece of fine network or other textile fabric
having a tolerably open texture, either with printers' ink or with a transfer ink
such as is used by lithographers, care being taken that none of the meshes of the
fabric are blocked up with ink, but that each thread is well saturated. This inked
fabric is placed upon a sheet of paper; and upon either the said paper or upon
the inked fabric I also place a Woodbury-type relief" and the whole is subjected
to pressure by suitable meclianical means. This causes the ink to "set off" from
the inked fabric on to the paper upon which is thus formed a picture in a kind of
stipple corresponding to the Woodbury-type relief. This stippled picture is then
either transferred directly to metal or stone by methods well known to printers,
or it may be photographed and a second transfer in fatty ink made by methods
well known to photo-lithographers and photo-zincographers.
"
I can so practice my invention as to obtain the grained or stipple image directly
upon a plate of zinc or other metal or upon a lithographic stone; and for this
purpose I lay the inked textile fabric upon the plate or stone after which I place
the Woodbury-type relief upon the fabric and apply pressure by suitable mechanical
means as before.
Fine wire gauze may be used in place of the textile fabric above mentioned
The term " Woodbury-type relief" is well understood among photographic
priuters, but in order to be precise I desire to state that I mean a gelatine film

page_text: in which the varying tints of a photograph are represented by varying thicknesses
of gelatine.
By printers' ink I mean any usual printing ink in which a pigmont 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.
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.
It must be well understood that in all cases the printers' ink must not be
allowed to thoroughly indurate before the inked fabric is used.

page_text: 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, AN
IMPROVED METHOD OR PROCESS OF PRODUCING PRINTS OR TRANSFERS OF
PHOTOGRAPHIC PICTURES"
°
'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 saturate or ink a piece of fine network or other textile
fabric either with printers' ink or with a transfer ink such as is used by
lithographers, care being taken that none of the meshes or ribs of the fabric are
blocked up with ink, but that each rib or thread is well saturated. This inked
fabric is placed in contact with a sheet of paper; and either upon the said paper
or upon the inked material I place a Woodbury-type relief," and the whole is
then subjected to pressure by suitable inechanical means.
"
I can so vary the working of my invention as to ink the " Woodbury-type
relief" itself, but in this case the paper or analogous material must always be
placed between the relief and the fabric. The pressure causes the ink to "set off"
from the inked material on to the paper, upon which is thus formed a picture in
a kind of stipple corresponding to the " Woodbury-type relief." This stippled
picture is then either transferred to metal or stone by any method known to
printers, or it may be photographed, and a second transfer in fatty ink made, by
methods known to photo-lithographers and photo-zincographers.
I can, if desired, so practice my invention as to obtain the grained or stippled
image directly upon a plate of zinc or other metal, or upon a lithographic stone;
for this purpose I first lay the inked fabric upon the plate or stone, I then place the
Woodbury-type relief" upon the said inked fabric and apply pressure by suitable
mechanical means as above described.
**
Fine wire gauge may, in some cases, be used in place of the textile fabric, and I
may mention silk gauze, ribbed silk, ribbed or grained transfer paper and
bookbinders' cloth as examples of the fabrics I use, such fabrics as are thin and
yielding or flexible being best adapted to the purposes of my invention.
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 filmu
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 cast™
or mould.
Those materials which, for the purposes of my invention, I regard as analogous to
paper are such thin flexible and yielding materials as will readily take an
impres-ion in printers' ink. Among these may be mentioned tracing cloth, tin or
other foil, gold beaters' skin, a collodion pellicle, silk fabric or other suitable
tissue.
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 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.

page_text: Having thus fully described my said invention and the manner of performing
the same I wish it understood that I claim :-
First. The production of a picture or transfer by pressing an inked textile
fabric or the like against paper or other suitable material by means of a
Woodbury-type relief," substantially as described.
20
Second. The production of a print or transfer on paper or analogous material
which is pressed between a textile fabric or the like and an inked "Woodbury-
type relief," substantially as described.
In witness whereof I the said Eugenio de Zuccato have hereunto set my hand
and seal this twentyseventh day of February in the year of our Lord One
thousand eight hundred and eighty four.
117
TARO