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Патент USA US2119041

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May 31, 1938.
A. CARMAN ET AL
,
2,119,041
REPRODUCTIQN PROCESS
Filed Nov.- 7, 195a
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INVENTORS
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_
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Patented May 31, 1938
_ 2,119,041
UNITED STATES
PATENT orrics
2,119,041
REPRODUCTION PROCESS
Albert Car-man and Jean Charlot, New York,
N. Y.
'
Application November 7, 1936, Serial No. 109,632
3 Claims. (Cl. 101-211)
The object of this invention is to provide a then to the paper which is to bear the design.
new method of printing in which images, pic
The reproduction has now been completed and is
tures, designs or letters are transferred directly the result of a direct transfer of the artist’s
from a plate upon which they have been drawn design from the plate to the paper without any
by hand. For the sake of convenience the word photographing, etching or other steps being in
design will be used throughout this speci?cation volved or necessary. The print, because of the
to designate any matter or item capable of be‘
absence of such other intermediary steps and
ing reproduced by the new method which may be because of non-use of a screen or the like, is a
used for single color as well as for multicolor true reproduction of the design and of superior
1 , reproductions. One particular object of the in
artistic quality. In fact the prints look like 10
‘
vention is to provide a printing method whereby
multicolor reproductions may be made from a
that the process is very economical because only
single plate by direct image transfer from such
plate. Other particular objects, advantages and
the making of the design and the printing there
of is involved. The print is the result of printing
15 uses of the invention will be pointed out as this
speci?cation proceeds. Reference is had to the
accompanying drawing which illustrates dia
grammatically the several steps involved in prac
ticing the invention. In the said drawing:
Fig. 1 is a view of a printing plate which bears
a design drawn thereon by hand and which is to
be reproduced.
Figs. 2-8 illustrate the progressive stages of the
method.
Fig. 9 illustrates diagrammatically an offset
printing mechanism for’ printing by the new
method.
~
The method includes the use of a metal print
ing plate of a type known in the art as a litho
graphic plate and which may be purchased in the
open market. The plate has a slate gray print
ing surface on one side upon which drawings may
be made the same as upon paper. The plate is
?exible and may be attached to the cylinder of
a printing press.
In fact such plates are now
used for printing purposes.
If a design is to be reproduced in one color, the
artist draws the entire design upon the plate in
the same manner in which he draws a design
upon a piece of paper. He may copy the design
or he may create the design, which is drawn
with a lithographic pencil or crayon, or drawing
ink may be used.
The plate with the design is then attached
to the printing cylinder of an oifset press. The
latter has the usual inking mechanism and also
means for wetting the plate with a suitable fluid
ing repellent. The ink repelling fluid is passed
over the entire plate before the inking roller runs
The result is that only the design
will be inked, the rest of the plate, i. e. the back
ground of the design will not be inked. Con
sequently, as the press is operated, the design is
transferred in the usual manner from the print
55 ing cylinder to the offset or blanketcylinder ‘and
over the plate.
5O
original drawings. It will also be quite obvious
directly- from the design.
Figure 1 illustrates the printing plate it upon '2
which the artist or draftsman has drawn a de—
sign H. The plate ill is attached to the press,
treated with the ink repellent, inked and then
prints the design I 1 upon the paper or other ma
terial desired. The lithographic pencil is a black
pencil and is manipulated by the craftsman in
the same manner in which a drawing is made
upon paper. The design may of course be printed
in any one color, this being merely a matter of
choice. Figure 9 shows the plate Ill attached to
the printing cylinder l2 of an offset press. it is
the blanket cylinder, I4 the paper, 15 the roller
for applying the ink repellent and Hi the ink
roller. The operation is obvious to any person
skilled in the art.
When a multicolor reproduction is to be made,
the method is as above stated except that the de
sign drawn upon the plate comprises only those
parts of the ?nished design which are to be
printed in any one certain color. The use of the
invention for multicolor printing will best be
understood by referring to Figures 2-9 of the
drawing. Let it be supposed that the picture
shown inFigure 2 is to be reproduced. The pic- I
ture shows a white house with a red roof, a blue "
shutter and a blue door upon a blue background
and with a green foreground with a green tree.
The reproduction therefore calls for printing in
three colors. The method is now carried out
as follows, see Figures 2-9:—
-
First the artist draws upon a printing plate
20 the red roof 2|. He uses a black lithographic
pencil so the result is as shown in Figure 3 in
which the roof appears simply as a roof drawn ,
in black upon the printing plate.
The plate is
then attached to the press in Figure 9 and the
printing including the use of the ink repellent is
done the same as with the plate in Figure l. The
‘result of the printing operation is a reproduction ‘
Qt
2
1
2,119,041
of the red roof upon the paper 22 or other ma
The method presents the possibilities of new
terial and is shown in Figure 4.
Thereafter the design of the roof 2| is washed
off, for instance with turpentine, but does not
entirely disappear from the plate because the
surface of the plate has a very ?ne grain. A
ghost picture of the roof remains on the plate
in su?lcient strength to indicate to the artist the
place where the roof was drawn. The ghost pic
ture is indicated at 23 in Figure 5.
uses of multicolor reproductions in various trades,
industries- and in business which heretofore have
been prevented from using color work due to the
expense of making photographic color plates or
by using other methods involving more work and
expense. The method may be used for poster
work in that a print may be made from the plate
in Figure 3, a second print made from the plate
in Figure 5 and a third print made from the 10
Thereafter the artist draws upon the same
plate in Figure 7, thus producing three prints,
printing plate 20 in Figure 5 the objects which
each of which bears a portion of the ?nished
are to be painted in another color. For instance,
he draws the green foreground and the tree.
He draws these objects with the lithographic
pencil and the result is therefore a printing plate
20 which bears a drawing 24 in black as shown
in Figure 5 and which also shows very faintly a
picture, the portions being separated by colors.
The said three separate “color portion” prints
ghost picture 23 of the previously drawn and
20 printed roof. The plate 28 is again attached to
the press, treated with ink repellent and inked.
The ink repellent
plate outside the
the ghost picture
25 the surface which
prevents the portions of the
design 24 from being inked,
surface 23 being included in
is responsive to the ink repel
may be enlarged in the usual manner for making 15
plates to be used in color poster printing.
The method also includes the making of a plu
rality of plates for printing several prints at one
time upon several presses or upon one larger
press. For instance, should it be desired to print 20
such a large quantity of prints that one press is
not sufficient, the following procedure may be
followed.
_
.
"
When the design in Figure 3 has been drawn,
attached to the press and been printed upon the 25
lent treatment. The paper 22 with the roof
picture thereon is put back into the press. The
printing is done and the result is now that the
paper 22 has printed thereon the red roof and
30 the green foreground and tree.
The plate 20 is now washed the second time
and again a ghost picture of the last printed por
tion remains on the plate. It is indicated by the
dotted lines 25 in Figure '7.
offset blanket, the press is stopped, the plate re
moved and a fresh unused plate attached. The
press is then started and now the offset cylinder
prints the design back upon a fresh printing
plate. The latter is removed and may be treated 30
with a suitable chemical which attacks only the
portions which are unprinted. The result is a
Thereafter the artist draws upon the same
The method according to this invention has 35
been commercially practiced successfully. It em
plate 20 the portions of the picture which are to
be printed in blue so that the plate now bears a
picture 26 of the blue background, blue shutter
and door drawn with the black lithographic pen
40 cil as illustrated in Figure '7.
The plate 28 is again attached to the press and
the paper 22 is put back. The plate is again
treated with ink repellent from the roller l5 and
inked by the roller l6 with the result that only the
portions of the plate 29 which bear the picture of
the background, shutter and door are inked blue.
The rest of the plate is not inked.
’
The result of the entire operation in accord
ance with the new method herein is a picture 21
in Figure 8 which is a true and complete repro
duction of the original picture in Figure 2. The
reproduction in Figure 8 is of superior artistic
quality due to the fact that every portion of the
original picture has been reproduced by direct
transfer of the artist’s drawings from the original
design. In other words, the beauty and artistic
quality of the reproduction depends upon the ar
tist’s skill and talent in drawing the picture upon
the plate, one or more portions at a time to in
clude all such portions as require inking with a
given color.
Figure 2 illustrates a picture which does not
require shading or blending of colors. It will be
obvious that the artist, when he draws the several
~ color sections, may shade this drawing and run
one portion into another portion so as to repro
duce faithfully and artistically the original de
sign. The method is therefore not limited to solid
color work. It will also be clear that the original
70 picture in Figure 2 may have no physical embodi
ment at all but the artist may create the picture
in making the drawings in Figures 3, 5 and "I.
In either case the method involves the forming of
the design by drawing upon the plate and then
75 printing directly from the plate upon the paper.
second plate bearing the design of the ?rst plate
and which may be used upon a second press.
bodies as its main feature the direct printing of
the design to be reproduced upon the paper. No
so-called key plates, master designs or the like
are used.
40
In the printing operation, the ink repellent
roller passes over the plate ?rst. Then the ink
is turned on and then both the repellent roller
and the ink roller pass over the plate during the
printing. This, however, will be obvious to per
sons skilled in the art. Of course, there is prac
tically no limit to the number of colors which
may be used in the method.
It will further be understood that the inven
tion is susceptible of changes within the prin 50
ciple thereof and the scope of the appended
claims.
This application is a continuation in part, of
a previous application ?led by us on July 13,
1935, Serial No. 31,226.
55
We claim:
1. A method for reproducing multicolor de
signs including the use of an offset press con
sisting in drawing with a lithographic pencil upon
a printing plate those portions of a design which 60
are to be reproduced in a desired color; placing
the plate upon the offset press in printing posi
tion; applying an ink repellent to said plate;
inking the drawn design upon the plate with such
selected color and printing therefrom by contact 65
ing the offset cylinder of the press directly with
the said inked design upon the plate; removing
the plate from the press; washing the plate to
remove the said inked design whereby a ghost
picture thereof remains upon the plate; drawing 70
upon said plate such other portions of the design
which are to be reproduced in another selected
color using the said ghost picture for guidance in
drawing the portions which are to reproduce the
other selected color; again placing said plate 75
3
2,119,041
upon the press in printing position; again apply
ing an ink repellent to the plate; inking the lat
ter with such other selected color and printing
a lithographic pencil; again treating the re
mainder of the plate with an ink repellent; ink
ing the plate with ink of said other color and
therefrom by again contacting the o?set cylinder
printing therefrom.
of the press directly with the said other inked
3. The method of multicolor printing and re
production which comprises drawing upon a
design upon the plate and thereafter repeating
the said operations for each additional color in
the design to be reproduced.
lithographic plate with a lithographic pencil such
portions of a design which are to appear in a
2. The method of multicolor printing and re
(10 production which comprises drawing those por
tions of a design which are to be reproduced in
one color directly upon a lithographic plate with
a lithographic pencil where that color is to ap
given color in the print; applying an ink repellent
to the plate; printing from said plate to repro 10
duce the said one color designs; removing the
designs from the plate whereby to leave thereon
faint images of the ?rst designs to serve as guides
pear in the print; treating the remainder of the
for the subsequent designs; repeating the draw
ing operation for the next color; applying an ink 15
repellent to the plate; printing from said plate
to reproduce the said next color; and repeating
the removing, drawing, ink repelling and printing
15 plate with an ink repellent; inking the plate with
the desired color; printing from the plate; re
moving the drawn design from the plate whereby
to leave a ghost picture of the ?rst color area
upon the plate for guidance in drawing a subse
20 quent color area; drawing such other portions
of the design which are to appear in another
color directly upon said lithographic plate with
operations for each subsequent other color in the
print.
20
ALBERT CARMAN.
JEAN CHARLOT.
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