FR2503039A1 - PRINTING ASSEMBLY WITH ROTARY MACHINE FOR COMBINED PRINTING OF PRINTED TITLES - Google Patents

Abstract

THE PRINTING ASSEMBLY INCLUDES A CLICH HOLDER CYLINDER 9 COOPERATING WITH AT LEAST ONE RUBBER CYLINDER 6, SEVERAL TEMPLATE ROLLS 14, 16, 17, 18, AND BETWEEN THESE LATEST AND THE CLICH HOLDER CYLINDER 9, SMALL CYLINDERS OF RUBBER 15, 20, 25, 30 TRANSFERRING THE COLORED SECTORS RECEIVED FROM THE TEMPLATE ROLLS ON THE PRINTING PLATES OF THE CLICH CYLINDER 9 WHICH CAN BE MADE AS THE TEMPLATES 19, 21, 22, 23, IN HARD MATERIAL , FOR EXAMPLE OF PLASTIC OR METAL. APPLICATION TO THE PRINTING OF LINE NETWORK SECURITY FUNDS FOR PRINTED SECURITIES OR SECURITIES.

Description

1.

  The present invention relates to sets of im-

  rotary machine pressure for direct combined printing

  or indirect, in particular offset, of securities or securities

  award-winning, including a plate cylinder with rigid letterpress or offset printing plates.

  printing plates of the plate cylinder are in con-

  rolling tact with multiple rubber cylinders

  so many rubber mats to be inked by these

  deny. Each rubber cylinder is associated with a

  water jig carrying patterns or jigs, each jig

  laughs being inked by an inking device. An im-

  pressure consisting of individual sheets or a ban-

  continuous, undergoes a combined impression between the cylinder-

  dre plate holders and a counter printing cylinder

reaction or counter-impression.

  We already know combi printing sets

  Rotary machine born for individual letterpress printing

  straight or in relief. In this type of printing assembly, several plate cylinders, supporting plates

  typographic, are arranged around a cylinder of rubber

  cabbage. The rubber cylinder receives cylinders

  clichés of loads of inks of different colors forming on this rubber cylinder a polychrome film defining a segment motif, which is then transferred to 2.

print media.

  US Patent No. 3,390,631 further describes rolls known as "template rolls"

divided and elastic.

  The object of the present invention is to provide a

  rotary machine assembly for combined printing

  putting to print on titles or values one or more

  several polychrome lines forming a security background for these titles, these printed lines having non-discontinuous and non-offset variations of different colors, avoiding that the template rolls must have a soft surface surface, the ink film presenting by

  against multiple divisions on the printing plates.

  To do this, according to a characteristic of the present invention, between the template roller carrying templates or plates delimiting color contours,

  and the plate cylinder is arranged a cylinder

  outchouc entrained coated with at least one rubber cloth receiving according to sectors the ink of the template plates

  to then transfer it to the printing plates or plates

  plate cylinder pressure.

  This arrangement allows, on the one hand, to print without any offset lines or surfaces having

  discontinuous color variations in a printing process

  indirect or combined offset typographic pressure, per-

  thus putting an end to a color collector cylinder to collect in the first place the different

  colors and then transfer them to the type plates

  graphics or offset. On the other hand, this arrangement makes it possible to avoid having to use several plate cylinders.

  to print a line network background, thus deleting

  if the usual expensive and long adjustments or paragonings of the different typographic printing plates

  or offset. It is thus possible to use plates typically

  graphics for obtaining prints with the quality of dry offset prints. The width of the lines on the printing plates is substantially preserved when they are 3.

  transfer to the print media elements. The con-

  external turns of the lines and flat are clearly

  delimited and have a uniform shade and inking.

  In this way, the ink non-uniformity problems usually encountered in printing techniques

  with rigid plates are eliminated.

  In addition, in the arrangement according to the invention, it is possible to mount on the template rollers, for the patterning of colors, hard template plates in the form of sectoral zones, for example made of plastic material or metal,

  which thus have a significantly increased lifespan.

  These hard, easily parangonable template plates can

  wind can be made very easily as opposed to the usual soft or soft template plates. Indeed, the soft rubber template plates, necessarily used until now in sets for combined printing, are expensive to manufacture and do not allow

  achieve a perfect paragon. Due to the use

  tion of hard template plates it is also possible to

  create with a different color small storage areas in differently colored areas,

  the development of these small reserve areas being possible

  ble in the technique according to the invention, which was not the case with rubber template plates, due to the

  inevitable slippage of the latter when they meet

be with hard shots.

  Other features and advantages of the pre-

  invention will emerge from the following description

  an embodiment, given by way of illustration but in no way limiting, made in connection with the appended drawing, in which: The single figure represents schematically,

  in side view, a rotary assembly for combined printing

born according to the invention.

  In the description which follows and on the

  sin, this rotary printing unit is intended for printing individual sheets, but there will be 4.

  that it can be used indifferently in an installation

  rotary printing of a continuous strip of paper.

  As shown in the drawing, the printing sheets

  sea 2 are transferred, in a manner known per se by cour-

  conveyor lines (not shown), from a sheet presentation device 1 to a reaction cylinder or counter-impression cylinder 6 via a stop drum 3. The stop drum 3 and the counter cylinder printing 6 are associated with a sheet picking device, known per se in the art considered (not shown). The counter-impression cylinder 6 is of the type

  stretch and carry on its periphery a rubber mat 7.

  A plate cylinder 9 cooperates in pressure contact with the printing counter cylinder. The printing medium to be printed, in this case each sheet 2, is printed passing between the plate cylinder 9 and the counter printing cylinder 6. The printing cylinder 9

  carries on its periphery one or more hard plates of im-

  letterpress or offset pressure 10 shaped to match

  lay the patterns to print. The print plate (s)

  Typographic sion (s) or offset of the plate cylinder 9 are inked according to sectoral zones by small rubber cylinders 5, 11, 12, 13 each carrying rubber mats 15, 20, 25, 30 inked according to zones

  sectoral. Each rubber mat 15, 20, 25, 30 re-

  receives its sectoral inking with a template roller 14, 16, 17, 18, respectively, associated with each rubber cylinder, 11, 12 or 13, each template roller 14, 16, 17, 18 being

  coated with a template plate 19, 21, 22 or 23, respectively.

  The template plates 19, 21, 22, 23 are made of a material

  hard material, for example-in the material known as

  lation Nyloprint, or metal, and are shaped

  sectors such as soft template plates convention-

  so that only these sectors are inked with a

  inking device 24, 26, 27 and 28 associated with each wheel

  water-template, these inked areas being transferred to the

  rubber mat 15, 20, 25, 30 of the rubber cylinders

  cabbage 5, 11, 12 and 13, respectively. At each gaba- roll

  5. laughs 14, 16, 17 and 18 is associated with a clean inking device 24, 26, 27 and 28, respectively. The template rollers 14,

  16, 17 and 18 have the same diameter, i.e. the same pe-

  ripery that the rubber cylinders 5, 11, 12 and 13,

  respectively, with which they are associated. The cylinder

  te-clichés 9 and the counter impression cylinder 6 have the same diameter which is a multiple of the diameter of the template rolls and rubber cylinders. In the embodiment shown, these cylinders have a triple diameter

  from that of the template rollers 14, 16, 17 and 18.

  According to the present invention, due to the arrangement of the rubber cylinders 5, 11, 12 and 13, with their rubber mats 15, 20, 25 and 30, for the

  transfer of ink to letterpress printing plates

  ques or offset 10 of the plate cylinder 9, we can obtain

  nier multiple divisions or cleavages of the colors on the final printed pattern due to the fact that the printing plates 10 on the plate cylinder 9 are inked by successive contacts with the different rubber cylinders 5, 11,

2d 12 and 13.

  The set of cylinders and rollers of the ins-

  tallation are synchronously driven in a manner known per se by the same geared drive mechanism

  from a main drive engine.

  It will be understood that the printing assembly according to the present invention can be used interchangeably for

  offset printing or for individual letterpress printing

  correct. In the latter case, there is provided, between the plate cylinder 9 and the counter printing cylinder 6, a 3J offset rubber cylinder advantageously having the same diameter as the plate cylinder 9. The printing of the individual sheets or of the strip of paper is made

  in a manner known per se between the rubber cylinder addi-

  and the counter impression cylinder 6.

  It will also be understood that, without departing from the scope of the present invention, the dry offset printing process can be replaced by a wet offset printing process in which, in known manner, at each device

  ink roller and possibly also to the key cylinder

  ché, is associated with a conventional wetting device.

  In the embodiment shown, the sheets

  the successive prints are taken up by means of a system

  sheet taker and transferred to an em-

  pounding the leaves. Using the printing set

  combined according to the invention in a rotary printing machine

  tive continuously, the printed paper web is fed to a cross-cutting device cutting the individual sheets from the web, which are then transferred from

  similarly, to a receiving and stacking station.

  Although the present invention has been described in relation to particular embodiments, it

  is not limited but is on the contrary susceptible

  ble of modifications and variants which will appear

one skilled in the art.

7.

Claims (5)

  1 - Rotary machine printing set for   combined printing of printed titles, including a cy-   printing plate liner carrying printing plates, a counter printing cylinder, and several template rolls, divided into sectors, an inking device being associated with each template roll, characterized in that it comprises at least one driven rubber cylinder (5; 11; 12; 13) covered with a rubber mat (15; 20; 25; 30)   between the plate cylinder (9) and each gaba-   laughs (14, 16, 17, 18) provided with a template plate (19, 21, 22, 23) transferring the ink which they have received according to sectoral zones on its rubber mat (15, 20, 25 ,   ) on the printing plates (10) of the cylinder shots (9).   2 - assembly according to claim l, character-   se in that it includes another rubber cylinder   be the plate cylinder (9) and the counter cylinder printing (6).   3 - assembly according to claim 1 or the res-   dication 2, characterized in that the plate cylinder   (9) is coated with hard printing plates (10).   4 - assembly according to claim 1 or the res-   dication 2, characterized in that the plate cylinder   (9) is coated with offset printing plates (10).   - Assembly according to one of claims 1, 2   and 4, characterized in that it comprises a wet device   associated with each inking device (24, 26, 27, 28).   6 -An assembly according to one of claims 2,4   and 5; characterized in that the plate cylinder (9), the counter-impression cylinder (6) and the other cylinder rubber have the same diameter.