Патент USA US2119041код для вставки
May 31, 1938. A. CARMAN ET AL , 2,119,041 REPRODUCTIQN PROCESS Filed Nov.- 7, 195a ‘Euq'l I 31ml II \ \N 20 25’ J0 EH15 - Q 75 , ‘ _ @‘ f6 ' U mffimlbt 14 INVENTORS () _ - 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.