Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
  • B65H5/26—Duplicate, alternate, selective, or coacting feeds
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
  • B41F11/02—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination for securities
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H31/00—Pile receivers
  • B65H31/24—Pile receivers multiple or compartmented, e.d. for alternate, programmed, or selective filling
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/10—Handled articles or webs
  • B65H2701/18—Form of handled article or web
  • B65H2701/182—Piled package
  • B65H2701/1826—Arrangement of sheets
  • B65H2701/1827—Interleaf layers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/10—Handled articles or webs
  • B65H2701/19—Specific article or web
  • B65H2701/1912—Banknotes, bills and cheques or the like
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2801/00—Application field
  • B65H2801/03—Image reproduction devices
  • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

• the present invention relates to a method for producing stacks of sheets printed with individual prints, in particular stacks of securities sheets, such as banknotes, from stacks of unprinted sheets, the unprinted sheets running one after the other into a printing press in order to be provided with the individual prints.
• the present invention also relates to a printing press for carrying out the method according to the invention.
• Patent EP 0 563 007 shows a modular copper printing machine which contains in particular a printing cylinder on which the sheets to be printed are held, a plate cylinder which in turn carries copper printing plates into which the printing motifs transferred to the sheets of the printing cylinder are engraved.
• the printing plates are inked both indirectly by means of an ink collecting cylinder, which collects the ink from several ink ductors and then transfers them to the plates of the plate cylinder, and also directly by means of an inking cylinder, which lies directly on the printing plates ,
• the process for the production of the printing sheet stack comprises in particular the transfer of the unprinted sheets from the feed stack to the printing cylinder, then the actual printing of the sheets with the motifs, the motifs using the inked plates of the plate cylinder be formed, and finally the further transport of the printed sheets into a delivery stack.
• the aim of the invention is to improve the known methods and machines.
• the aim of the invention is to propose a method with which printed sheet stacks can be formed and at the same time the risk of contamination of the stacked sheets can be reduced to a maximum.
• the aim of the invention is also to propose a printing press, in particular a sheet-fed printing press, which allows the method to be used.
• FIG. 1 A printing machine known from the current state of the art is shown schematically in FIG. 1
• FIG. 2 is an illustration of a machine which enables the method according to the invention to be used.
• FIG. 3 is a block diagram of the method according to the invention.
• This machine is generally designated by the reference number 1 and consists of the following parts: a feeder 2 for the sheets to be printed, a printing module 3, a transport system 4 with which the printing sheets are transported to the deliveries 5 and 6 of the machine 1.
• This machine also includes a feeder for intermediate sheets 7 in addition to the displays 5 and 6.
• the printing module 3 comprises a plate cylinder, which is inked by inking rollers 9 of the ink fountains 13, 14, 15 and 16.
• the module also includes a printing cylinder on which the sheets 18 that come from the feeder 2 lie.
• the module also includes a wiping cylinder 19 and transfer rollers 20 and 21 for transporting the sheets 18 onto the impression cylinder 17.
• the sheets are printed, they are taken over by the discharge system 4, which, for example, a chain gripper system 22 and drying agent 23 such as e.g. Lamps included.
• the sheets 18, which are transported by the discharge system 4, are thus dried by the drying means 23 before they are stacked in the displays 5 and 6.
• a feed device for intermediate sheets 7 is also used, with which a protective sheet 24 is placed between each sheet 18 stacked in the deliveries 5 and 6.
• This machine is identified by reference number 30 and generally comprises a feeder 31 for unprinted sheets 32, which are fed to a printing unit 33 and then, after printing is completed, a delivery stack 34.
• the printing unit 33 comprises a plate cylinder 35 and a printing cylinder 36.
• Die The machine shown in FIG. 2 also uses the principle of direct coloring and indirect coloring.
• the direct inking of the plate cylinder is realized by an ink fountain 37 and an inking roller 38.
• the indirect coloring in turn takes place through the ink fountains 39, 40 and 41 and their inking rollers 42, 43 and 44.
• the Ink application rollers 42, 43 and 44 give the ink to a collecting ink cylinder 45, which in turn applies the necessary ink to the plates of the plate cylinder 35.
• the plate cylinder 35 can carry two plates and consequently only a single pressure plate is mounted in the present case.
• the printing module also comprises a wiper device with a wiper cylinder 49.
• the unprinted sheets 32 are fed from the feeder 31 by a suitable transfer system 50 such as e.g. brought a chain gripper system to the pressure cylinder 36 and held on this cylinder by suitable grippers of the cylinder 36.
• a suitable transfer system 50 such as e.g. brought a chain gripper system to the pressure cylinder 36 and held on this cylinder by suitable grippers of the cylinder 36.
• a feeder 46 for intermediate sheets 47 was attached over the printing cylinder 36 and the delivery stack 34.
• these intermediate sheets 47 have the same size as the unprinted sheets 32 on which the security printing is to take place and they become like the sheets
• the printing cylinder 36 alternately receives an unprinted sheet 32 and an intermediate sheet 47. Since there is only a single plate on the plate cylinder, their register adjustment takes place with the sheet 32, which is located on the plate cylinder 36 and onto which the security prints are printed should be: In this way the plate is printed on one of two sheets, ie the
• Sheet 32 which is to receive the security print, and the other sheet carried by the printing cylinder 36, which is the intermediate sheet 47, is not printed, but takes the same path in the printing machine 30 as the printed sheet. In this way it is possible to alternate between a printed sheet and an intermediate sheet 47 in the delivery stack 34 receive, which effectively protects the successive sheets against each other.
• the delivery stack 34 is fed by the printing cylinder 36: after each rotation of the printing cylinder, the sheets it carries are taken over by a suitable transfer system, e.g. from a transfer roller operating on the suction principle by means of negative pressure in order to transfer the sheet, or a system with a chain 51 with grippers 52, as is shown schematically in dotted lines in FIG.
• a suitable transfer system e.g. from a transfer roller operating on the suction principle by means of negative pressure in order to transfer the sheet, or a system with a chain 51 with grippers 52, as is shown schematically in dotted lines in FIG.
• the intermediate sheets 47 are fed to the printing cylinder 36 by conventional means, for example a gripper chain system, and transferred to the printing cylinder 36 with the aid of a transfer roller 48.
• Figure 3 shows a block diagram of the method according to the invention.
• the impression cylinder carries two sheets, as in the machine shown in FIG.
• an unprinted sheet 32 to be printed and an intermediate sheet 47 are alternately fed to the printing module of the printing press 30.
• the variable N is used to define the total number of plates that can be carried by the plate cylinder 35, where N is an integral multiple of 2.
• N is 4 and in Figure 2, N is 2.
• a sheet stack 34 is formed in the delivery of the machine, which stack alternately consists of printed sheets 32 and intermediate sheets 47 which separate the printed sheets 32 from one another, composed.
• the invention is not limited to the described embodiments, and modifications are possible.
• the principle of the invention can be applied to printing presses in which a printing method other than copper printing is used.
• the intermediate sheets are preferably unprinted. However, one can also imagine that with sufficient absorbency of the paper 1 used for the intermediate sheets, this could still be printed with individual prints. This procedure could be advantageous if N is 2. In this case, if there is only one plate on the plate cylinder, the rotation of the plate cylinder is not balanced and disruptive vibrations can be generated. So you could imagine that you still put a second plate on the plate cylinder, on which you could have a simplified print motif to avoid too much ink.
• the variable N is not limited to 2. Indeed, N can be 4 or 6 or even 8. This number is determined in part by the size of the sheets to be printed, i.e. the size of the prints and the number of prints per sheet and also dictated by the diameter of the printing and plate cylinders. Assuming that N is 4 or 6 or 8, a symmetrical distribution of the sectors of the plate cylinder that support a plate and the sectors on which no plate is located - this symmetrical distribution is necessary in order to alternate to produce printed sheets and intermediate sheets - improves the smooth functioning of the machine because there is no imbalance due to the absence of a plate.
• An advantage of the method according to the invention and the printing press that enables the use of the method is the modular structure for the small machines. Indeed, it is easy to install an intermediate sheet feeder over the machine and insert these sheets into the flow of unprinted sheets to be printed at the level of the cylinder carrying the sheets, and not to interrupt the flow of sheets stacked in the delivery of the press.
• the system described is also very compact and the space required is greatly reduced compared to a conventional drying system.
• the system using the method according to the invention is not nearly as expensive as a drying system.

Applications Claiming Priority (3)

Publications (2)

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ID=4567341

Family Applications (1)

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Family Cites Families (14)

• 2001
  • 2001-10-18 US US10/168,784 patent/US6761110B2/en not_active Expired - Fee Related
  • 2001-10-18 JP JP2002535883A patent/JP2004511365A/ja not_active Withdrawn
  • 2001-10-18 EP EP01974614A patent/EP1326749B1/fr not_active Expired - Lifetime
  • 2001-10-18 UA UA2002076058A patent/UA72952C2/uk unknown
  • 2001-10-18 KR KR1020027007807A patent/KR100829528B1/ko not_active IP Right Cessation
  • 2001-10-18 CA CA002393209A patent/CA2393209C/fr not_active Expired - Fee Related
  • 2001-10-18 CN CNB018032168A patent/CN1265963C/zh not_active Expired - Fee Related
  • 2001-10-18 RU RU2002119408/12A patent/RU2262447C2/ru not_active IP Right Cessation
  • 2001-10-18 DE DE50114732T patent/DE50114732D1/de not_active Expired - Lifetime
  • 2001-10-18 AU AU94127/01A patent/AU777495B2/en not_active Ceased
  • 2001-10-18 WO PCT/IB2001/001951 patent/WO2002032669A2/fr active IP Right Grant
  • 2001-10-18 AT AT01974614T patent/ATE423677T1/de not_active IP Right Cessation
  • 2001-10-18 KR KR1020077014296A patent/KR100829530B1/ko not_active IP Right Cessation
• 2004
  • 2004-04-05 US US10/816,871 patent/US6948428B2/en not_active Expired - Fee Related
• 2008
  • 2008-06-02 JP JP2008144976A patent/JP2008201144A/ja active Pending

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