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Патент USA US2112188

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March 22, 1938.
Filed Dec. 5, 1936
Patented Mar. 22, 1938
Harper Woodhead, Blackborough, near Gul
lompton, England
Application December 5, 1936, Serial No. 114,510
In Great Britain July 24, 1935
1 Claim.
(Cl. 101-194)
This invention relates to a process and appara
tus for intaglio and other printing which is par
ticularly applicable for example, to bank note
In intaglio printing it is usual to use a sepa
rate plate for the making of each colour impres
sion on the paper or the like to be printed, but
it has been suggested to use a single plate and
apply colour to localized areas of this from ink
10 ing pads cut'away according to the particular
area to be inked by each of them.
In the process of the present invention, how
ever, a single plate is provided throughout its
surface with a ground colour and colours are
15 then superimposed on said ground colour on
the plate from separate inking pads.
The invention is more particularly described
with reference to the accompanying drawing in
- 20
Figure l is a plan view of one form of machine.
Figure 2 is a section on the line I--I of Figure 1.
Figure 3 is a section on the line II--II of Fig
ure 1 and on the lines III-III, and IV-IV of
Figure 1.
Figure 4 is a section on the line V-—V, of Fig
Figure 5 is a section on the line VI-VI, of Fig.
ure 1.
The machine comprises a rotary table I having
sockets for the reception of printing plates 2 to
tion on the table, comes to this station.
pad II is inked by a reciprocating set of rollers
l2, taking up a colour from a rotary plate 13
inked from a roller I4 and ink supply l5 similar
to the plate 5, roller 4 and ink supply 3 at stag
tion I. By ‘this means there is imposed on the
matrix or plate 2 completely covered with ground
colour, a pattern corresponding to the pattern
engraved or otherwise formed on the pad ll.
Similar arrangements to Figure 3 are disposed in
at stations III and IV, for the application of a
second and third coloured imprint upon the
background. It is obvious however, that any num
ber of stations may be provided for providing
any number of superposed colour layers by simi- 15
lar means. Three colour layers superimposed
over a ground colour are shown in the accom
panying diagrammatic drawing solely by way of
At the station V, of the rotary table I, a sheet 20
or sheets of paper, metal or the like to be printed
may be printed from the printing matrix or plate
2 in any desired known manner, and at station
VI, the printing plate or matrix 2 may either
be interchanged for another or be cleaned in N) 5
readiness for the commencement of a fresh cycle.
In order to print the sheet of paper or the
like at station V, this is fed by grippers H5 at
each side which carry it over the rotary table to
the exact position over the engraved plate or 30
be inked, which plate may be in the form of a printing matrix 2, whereupon a platen descends
wood block, a stereo, an intaglio or etched plate for the impression to be taken. After the platen
has receded relatively to the table, the grippers
or any other type of printing surface.
l6 returning from above draw the paper away
In the machine shown by way of example, the
from the plate commencing at a part nearest the 35
rotary table I has six sockets, so that six opera
center of the table in order to counteract the pull
ca tions can be performed in sequence in one opera
tion on one plate taking place simultaneously or adhesion of the inked plate to the paper.
At station VI the plate may either be cleaned
with a diiferent operation on another plate.
At the station I radial to the table l is arranged by hand, or automatically by brushes or pads I‘!
40 an ink supply hopper 3, from which ink is taken or both disposed at varying angles.
I declare that what I claim is:-—
up on to an inking roller 4, and transferred to
A printing machine comprising a rotary table,
a rotary inking plate 5. Ink is transferred from
the plate 5 to an inking plate 6 by means of a ‘means to secure a plurality of similar printing
plates thereon, inking means operable opposite
set of rollers ‘l on a reciprocating frame, 8, which one point of said rotary table to transfer colour
45 frame also carries a second set of inking rollers
9 for transferring ink from the inking plate 6 to to each plate in turn, doctor means to remove
the printing plate 2. This frame 8 may also excess colour from the plate, a plurality oi ink
pads bearing differential patterns and disposed
carry a hinged doctor H! for removing super
?uous ink from the plate 2. At station I, the
50 ink applied to the plate 2 is preferably in the
form of a ground colour, usually a grey, neutral
tint, which becomes subservient to tints or colours
subsequently to be applied.
A block, pad, or other intaglio surface. H is
55 disposed at the next station II to reciprocate in
a plane at right angles to the surface of the
printing matrix 2 to be inked, which in its rota
in‘ spaced relationship angularly around said
table, means to apply colour to each of said pat 50
terned pads in turn, means to apply each pat
terned pad in turn to each plate in turn, and
means to obtain a printing impression from each
plate in turn when it has received the various
colour impressions.
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