US433967A

US433967A - Color-printing

Info

Publication number: US433967A
Authority: US
Publication date: 1890-08-12
Anticipated expiration: 1907-08-12

Description

(No Model.) 3 Sheets-Sheet 1. G. W. TURNER. COLOR PRINTING.

No. 433,967. 'Patented-Aug. 12, 1890.

(No Model.) 3 Sheets-,Sheet 2.

G. W. TURNER.

COLOR PRINTING.

- 10.433.961 Patented Aug. 12. 1890.

p4, HIHIIIIIIHHIH lll Hllll IIIIIIIIII fammi/0 (No Model.)

3 Sheets-Sheet 3. G. W. TURNER.

COLOR PRINTING.

Patented Aug.' 1'2, 1890.

'ma wams PETERS co., Fuero-mun., WASHINGTON. n. c.

A I. UNITED STATES PATENT OFFICE.

GEORGE VALTER TURNER,IOF BROOKLYN, NEV YORK.

COLOR-PRINTING.

SPECIFICATION forming part of Letters PatentrNo. 433,967, dated August 12, 1890.

Application filed February 23, 1889. Serial No. 300,984. (No model.)

To all whom t may concern.-

Be it known that I, GEORGE WALTER TUR- NER, a citizen of the United States, residing in Boooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in the Art of Color-Printing, fully described and represented in the following speciiication and the accompanying drawings, forming part of the same.

Thisinvention relates to that branch of the art of printingknown as color-printing, its object being to provide an improved method and means for printing in colors, by which an impression in two or more colors may be taken upon paper or textile fabrics 'by one impression operation.

While this invention is of general application in color-printing, it is of especial value as applied to book and newspaper work, in which the necessity for speed renders it desirable that Vbut one impression operation should be made for printing the sheet, and that the mechanism by which the result of printing in colors is attained shall be as simple as possible. In the make-up of matter Y and other operations of making ready for rinting modern news a ers the utmost dis- P s patch is required, and although the desirability of beingable to give that prominence to a particular subject which would result from printing in different colors is apparent andA has long been recognized, the usual means for accomplishing this end are so complex as to render them unavailable for use in newspaper work. Bymy invention Iamable to provide means which can be readily applied to existing printing-machines, and so expeditiously as to enable it to be used in the printingv of daily newspapers, and'l attain this object by preparing a printing form or plate having surfaces of different heights, the picture or other matter which is to receive the color dierent from the body of the paper being placed, preferably, slightly below the surface or plane of the main portion ofthe form or plate, so that the primary inkingrollers or other inking device will ink only the body or higher portions of the form or plate without coming in contact with or ink- These lower portions are inked, preferably by asecondary inkingroller or other suitable device carrying the desired color and of the proper dimensions, and so constructed as to ink only the lower` portions of the form or plate. With this printing form or plate'l use an impressionsurface having corresponding faces of dierent heights arranged reversely to those of the printing form or plate, the higher portions of the impression-surface being constructed of dimensions corresponding to those of the lower surfaces of the printing form or plate. The raised portions of the impression-surface are formed, preferably, by an extra overlay of a form and dimensions corresponding with those of the lower printing-surfaces, andthe paper or other material to be acted upon is fed in the usual manner, the impression being given by bringing the impression-surface into printing contact with both the upper and lower printing-surfaces by one impresit is also applicable to any other class of printing-machines, whetherusing a curved or flat printing-surface, as will hereinafter appear.

For afull understanding of my invention a detailed description of mechanism embodying the same will now be given, reference being had to the accompanying drawings, forming a part of my specification, in which- Y A 5 Figure l is a sectionalelevation of one form of mechanism embodying my invention as applied to a web-printing machine. Fig. 2 is a plan of Fig. l, certain portions of the printing and inking mechanism being broken away to better illustrate my invent-ion. Fig. 3 is a plan View of the type and impression cylinders of Fig. l, butin a slightly-changed position. Fig. 4 is aperspective View, ypartly in section, of a flat printing-form made up according to my invention. Fig. 5 is a crosssection of the impression-surface for printing from a fiat form. Fig. Gisa cross-section of a fiat form corresponding to the impression-surface of Fig. 3. Fig. 7 shows in per- IOO ing machine; I, the impression-cylinder; J, a portion of a second impression-cylinder, and K distributing and form rollers of the primary inking mechanism of the usualconstruction.

O is a stereotype-plate secured to the typecylinder H Yin the usual manner, and provided, as shown clearly in Figs. l and 8,with aportion A, depressed below the body or main portion B of the plate.

The impression-cylinder I is provided with an overlay C, of any suitable material, secured to the blanket R bythe use of cement, thread, or in any other suitable manner, this overlay being of a size corresponding to the depressed portion A of the stereotype-plate, and placed in such relative position thereto as to insure .its impression therewith as the cylinders revolve. Only one depressed portion on `the .type-cylinder and one overlay on the impression-cylinder are shown, as this is sufficient to illustrate my invention; but it will be understood that the number and form of these corresponding raised and depressed portions will be varied as desired, in accordance with the result to be attained. Y For the purpose of inking the depressed portion A of the stereotype-plate I provide a secondary inking mechanism, as follows: The cylinder L is geared to the type-cylinder H, vso as to rotate in unison therewith, and is provided upon its face with an inking-pad P, corresponding in size and shape to the surface A, the cylinder L being so timed in its movement that the pad P registers with the surface A of the stereotype-plate as the cylinders L and H revolve. This inking-pad P is inked by means of the inking-roll M, receiving ink from the roll N, which may be supplied with ink by any of the usual methods, vor covered with porous material and charged with ink. The cylinders and rolls are geared by means of gears a, b, c, d, and e, as shown in dotted lines in Fig. 1, so as to rotate in proper relative time, and the cylinder L, as shown in Fig. 2, is made adjustable, so as to secure the accurate registry of the pad P with the lower surface A of the stereotypeplate.

The operation of the mechanism described is as follows: The paper T is led from the web-roll ovei` the impression-cylinder I and between it and the type-cylinder H, and thence around the perfecting impression-cylinder J, as shown by the arrows in Fig. 1. The body of the type-cylinder H is inked by the main inking mechanism K, the surface A of the stereotype-plate receiving no ink therefrom on account of its position below the surface B of the body of the stereotype-plate. The pad P on the cylinder L is supplied from rolls M N with ink of a color different from that of the main inking mechanism K, and by the revolution of the cylinder L inks the depressed surface A, but its size and shape corresponding thereto inks no portion of the body of the stereotype-plate. As the type and impression cylinders H I revolve and-the impression is taken, the part of the paper whichis opposite the overlay C is brought into printing contact with the lower surface A of the stereotype-plate and receives an impression therefrom in ink of a different color from that of the body of the paper, the result of the operation described being a product consisting of a web or sheet of paper printed in two colors and thus printed by one impression operation. i

The inking mechanism shown and described is that which I prefer to use; but it is evident that any other form of inking device may be employed whereby the upper and lower p0rtions of the stereotype-plate will be inked in different colors.

In Figs. 4, 5, and 6 I have shown my invention applied to a flat form. Fig. 4 shows clearly a construction in which thesurface A, containing the illustration or other matter which is to be printed in a different color, is depressed below the surface of the body B of the type form or plate. Figs. 5 and 6 show in cross-section a corresponding flat impression-surface and type-form in carrying out my invention. As shown in Fig. 5, the overlay C of the impression-surface is backed up by additional paperD or other material. For

the purpose of preventing an abrupt bend in the paper when the impression is taken, the edges of the overlay C are preferably beveled, as shown at E in Fig. 5'. It has also been found advisable to make the overlay C of sufficient thickness to insure its contact with the surface A slightly in advance of that of the main portion of the impression-surface .with printing-surfaces B.

In Fig. 7 I have shown a` modification of my invention, in which printing-surfaces of three different elevations are used, a third printing-surface A being shown inside the surface A. In printing from a form of this `character a third inking-pad will be used for inking the surface A as will readily be understood. It will also be understood that in- IOO IIO

stead of the surface A being below the surface A and supplied with a different color, this surface may be 'level with the surface B, so that an impression in the same color as the body of the paper will be taken within ism and to insure its or their engagement A with the corresponding projecting face or faces of the overlay or raised portion or portions of the impression-cylinder for printingcontact is so slight as to cause no injurious or undesirable effect upon the paper in ing it.

Instead of the printing surface or portion print- A being depressed, it may be raised above the body or main printing-surface of the typecylinder sufficiently to permit its being inked in one color by ordinary inking mechanism, which will not ink such main surface. The latter in such case may be inked by an inking-cylinder of such diameter that one revolution of it will ink said main surface, a portion of its face being cut away or depressed to clear the raised portion A without inking it. In such case also, instead of the impression-cylinder having a raised face, it will be provided with a depressed face correspondin g in shape with the raised portion A, and so as to properly press the paper against such raised portion.

Various other modifications may be made in the apparatus for carrying out my invention by persons skilledvin the art without departing from my invention.

I am aware that printing forms or surfaces have been made up in sections, and so that one or more of them may be so moved as t0 stand above the level of the other sections temporarily and for the purpose of taking ink, each section taking a different color, after which the different sections are brought to a common level for the impression; but in such constructions each impression is taken only from those sections which are relatively on a common printing level.

Vhat I claim isl. rlhe method of printing in colors, which consists in taking an impression from printing-surfaces of different heights, which have been inked in different colors, by one impression operation, substantially as described.

2. The method of printing in colors, which consists in taking an impression from printing-surfaces of different heights, which have been inked in different colors, by bringing into impression cont-act with said Vsurfaces by one impression operation an impressionsurface having corresponding portions of different heights, substantially as described.

3. The method of printing` in colors, which consists in preparinga printing form or plate having surfaces of dierent heights, inking said surfaces in different colors, and taking an impression from said surfaces by one impression operation,substan tially as described.

tions of different heights, inking said printing-surfaces in different colors, and taking an impression by said printing and impresn sion surfaces at one impression operation, substantially as described.

5. The combination of a printing form or plate having surfaces of different heights, means for inking the same in different colors, and means fortaking an impression from said surfaces by one impression operation, substantially as described.

6. A printing form or plate having surfaces of dierent heights, in combination with means for inking the same ink dierent colors', and a coacting impression-surface havingcorresponding portions of different heights, whereby an impression is taken from both lower and upper printing-surfaces by one impression operation, substantially as described.

v7. The combination, with a printing form or plate having relatively fixed surfaces of different heights, of an inking mechanism whereby the upper surfaces only are inked and a second inking mechanism whereby the lower surfaces only are inked, substantially as described. p Y

8. The combination of a printing form'or plate having relatively fixed surfaces of'diferent heights, independent inking mechanisms, wherebysaid surfaces are inked in different colors, and a coacting impression-surface adapted to act upon both the upper and lower printing-surfaces at one impression operation, substantially as described.

9. A printing form or plate having relatively iixed surfaces of different heights, in combination with an inking mechanism whereby the lower surfaces onlyare inked, substantially as described.

GEORGE WALTER TURNER.

Witnesses:

FRANK E. FITCH, Envvn. H. ARGENT.'