US2054313A - Apparatus for printing and embossing in register - Google Patents

Description

p 1936. G. BRIGHT 2,054,313

APPARATUS FOR PRINTING AND EMBOSSING IN REGISTER Filed Sept. 29, 1954 1772i @2161 Cha m a rzg ht Patented Sept. 15, 1936 UNITE STAfi ATE? OFFIQE APPARATUS FOR PRINTING AND EMBOSS- ING IN REGISTER Application September 29, 1934, Serial No. 746,095

Claims.

This invention relates to apparatus for printing and embossing in register, its chief intended use being for the printing and embossing of wall paper in multi-color designs.

Combined printing and embossing machines are broadly known, but, so far as I am aware, considerable difiiculty has been experiencedin securing accurate register of the printed and embossed areas on the paper, especially at high speeds, and also in obtaining clearness and sharpness of the design on the product. It is the object of the present invention to improve the art in both of these respects, as well as to provide a machine that can be successfully operated at high speeds and with the use of thin inks.

Apparatus embodying the novel principle of the invention is diagrammatically shown in the accompanying drawing, in which:

Fig. 1 is an elevation of the several rolls and accessories for a machine designed to print and emboss in two colors.

Fig. 2 is a similar elevation of a machine designed to print and emboss in four colors.

Referring to Fig. 1, Hi designates a steel embossing roll, the periphery of which carries in relief portions, such as a, b, c, and d of a complete design, in this case repeated on each half of the roll periphery. Above and in rolling contact with said embossing roll is an ink transfer roll I I having an elastic surface H of rubber or gelatin composition adapted to receive design impressions. In rolling contact with the impression roll II are a pair of diametrically opposed cut' out metal printing rolls [2, each of which carries on its periphery portions, such as a, b and c, d, in relief of the complete design a, b, c, d on the embossing roll l0. Ink is fed to each of the printing rolls l2 from a pan l3 by an intaglio feed roll I4, equipped with a doctor H3 and in rolling contact with a rubber surfaced transfer or form roll l5, which in turn, delivers the ink to the printing roll I2 and the design fraction or fractions on the periphery thereof. The ink, which may be of different colors, as red and green, is pressed into the yielding elastic surface of the transfer roll II, and these ink-covered impressions then travel into register with the raised design fractions on the embossing roll l0. Co- 50 operating with the steel embossing roll iii is the usual paper impression roll it, between which and. the steel embossing roll if] this paper web W to be printed and embossed passes.

Rolls l0 and II are of the same diameter, and rolls I2 are of one-half the diameter of H] and H, and all of these rolls are geared together so as to be in constant register. The design portions or fractions on each printing roll l2 are transferred to each half of the surface of the transfer roll II. that the design fractions for the different colors are located so as to register with different parts of the pattern to avoid overlapping of the various colors.

Fig. 2 illustrates an extension of the same principle, designed to facilitate printing and embossing in register in a larger variety of colors. Here the transfer roll l l is twice the diameter of the embossing roll iii and four times the diameter of the printing rolls l2. This makes possible the use of four printing rolls, and consequently the printing of the design in four different colors, the complete design being repeated on each quarter of the periphery of the transfer roll II and on each half of the periphery of the embossing roll l0. Where a larger diameter transfer roll, such as l l and a larger number of printing rolls [2 are employed, as illustrated in Fig. 2, not only may a greater variety of embossing and color effects be obtained, but a greater amount of detail in the complete design is also possible, as typically illustrated by the design portions or fractions e, f, g, h, z, It. And since the ink transfer roll is an even multiple in diameter of the printing rolls [2 and an integer or even multiple in diameter of the embossing roll it or If), the complete design is impressed and printed on the paper web in successive areas with perfectly matched joints and with no overlapping.

The ink of the designs is not necessarily confined to the raised or embossing parts of the roll Hi3 or iii, since the surface of the roll H or II is sufficiently elastic or flexible to carry the colors into the lower areas of the embossing roll, so that the printed design may appear on a background that is a combination or blend of the several colors employed. However, most of the color for the design is applied to the relief portions of the embossing roll.

As compared with known devices for printing and embossing in register, the chief novel feature of this invention is the use of the offset ink much simpler inking fountains may be employed than have heretofore been used, and it is practicable to use cut-out metal printing rolls instead of. cut-out soft composition rolls, the for- It will be understood, of course,

mer holding their sharpness of design much better and lasting longer than the soft rolls. Faster speeds and more perfect register of the cooperating rolls are also obtained by the present invention I claim as my invention:

1; Apparatus for printing and embossing in register, comprising, in combination, a cut out metal printing roll carrying a design in relief, means for supplying ink thereto,ran ink transfer roll having an elastic surface in rolling contact with said printing roll, an embossing roll carrying in relief the same design as said printing roll in rolling contact with said transfer roll,vand a paper impression roll between which and said embossing roll the paper web to be printed and embossed is passed.

2. Apparatus for printing and embossing in register, comprising, in combination, a cut out metal'printing roll carrying a design in relief, means for supplying ink thereto, an ink transfer roll having an elastic surface in rolling contact with said printing roll, an embossing roll carrying in relief the same design as said printing roll in rolling contact with said transfer roll, said rolls being of the same, or even multiples .of the same, diameter, and a. paper impression roll between which and said embossing roll the paper web to be printed and embossed is passed.

3. Apparatus for printing and embossing in register, comprising, in combination, a cut out metal printing roll carrying a design in relief, an

' ink pan, an ink feed roll dipping in said pan, a

doctor cooperating with said feed roll, a form roll having. an elastic surface transferring the ink from said feed roll to said printing r011, an ink transfer roll having an elastic surface in rolling contact with said printing roll, an embossing roll carrying in relief the same design as said printing roll in rolling contact with said transfer roll, said printing, transfer and embossing rolls being of the same, or multiples of the same, diameter, and a paper impression roll between which and said embossing roll the paper web to be printed and embossed is passed.

4. Apparatus for printing and embossing in register, comprising in combination, a plurality of cut out metal printing rolls each carrying a portion of a complete design in relief, means for supplying ink to said printing rolls, an ink transfer roll having an elastic surface and of a diameter that i's an even multiple of the diameter of said printing rolls in rolling contact with the latter, an embossing roll carrying in relief the complete design in rolling contact with said transfer roll, and a paper impression roll between which and said embossing roll the paper web to be printed and embossed is passed.

5. Apparatus for printing and embossing: in register, comprising in combination, a plurality of cut out metal printing rolls each carrying, a portion of a complete design in relief, means for supplying ink to said printing rolls, an ink transfer roll having an elastic surface and of a diameter that is an even multiple of the diameter of said printing rolls in rolling contact with the latter, an embossing roll of the same diameter as, or an even fraction of the diameter of, said transfer roll carrying in relief the complete design in rolling contact with said transfer roll, and a paper impression roll between which and said embossing roll the paper web to be printed and embossed is passed.

CHARLES G. BRIGHT.

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