EP3863855A1 - Device, method and printing press for multiple printing of printing material sheets - Google Patents
Device, method and printing press for multiple printing of printing material sheetsInfo
- Publication number
- EP3863855A1 EP3863855A1 EP19723106.1A EP19723106A EP3863855A1 EP 3863855 A1 EP3863855 A1 EP 3863855A1 EP 19723106 A EP19723106 A EP 19723106A EP 3863855 A1 EP3863855 A1 EP 3863855A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- transport
- cylinder
- point
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007639 printing Methods 0.000 title claims abstract description 246
- 239000000463 material Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims description 16
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 29
- 239000000758 substrate Substances 0.000 claims description 23
- 238000007664 blowing Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000007600 charging Methods 0.000 claims description 3
- 230000032258 transport Effects 0.000 claims 52
- 238000001035 drying Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000002028 premature Effects 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
Classifications
-
- 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
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
- B41F21/005—Electrostatic holding down devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/0024—Frames
Definitions
- the invention relates to a device, a method and a
- Security printing machine for multiple printing of printing material sheets, in particular security sheets, according to claim 1, 15 or 16.
- a printing press is known from WO 2016/071870 A1, by means of which curved substrate guided on a transport path on two in the transport path
- spaced-apart printing points can be printed on both sides in succession in multicolor printing.
- the multi-color printing is carried out by a respective collective printing unit in such a way that the partial print images of a plurality of forme cylinders are collected on one collecting cylinder before they are jointly released to the substrate in the printing point.
- EP 2 574 463 B1 also discloses a sheet-fed printing machine, wherein the printed sheet is pressed onto the impression cylinder by electrostatic forces after it is first placed on the impression cylinder by a pressure roller, with a jet of blown air being directed into the nip between the impression cylinder and the pressure roller for support.
- DE 10 2010 028 702 B4 relates to a turning device of a sheet-fed printing machine with a feed drum, a storage drum and a turning drum.
- a blowing device directed towards the storage drum and an ionizing device by reducing a caster angle from areas adjacent to the trailing edge, the sheet guidance can be improved.
- EP 2 982 510 A1 describes a printing press with two formless ones
- Printing units disclosed wherein a plurality of sheet guide elements are directed to the impression cylinder in front of an inkjet printing point in order to lay the sheet flat in front of the inkjet printing head.
- These can be designed as blowpipes, as mechanical or as electrostatic guide elements.
- DE 199 20 371 A1 relates to a turning device of a sheet-fed printing press, it being possible to coat the circumferential surface of the impression cylinder in the region of the sheet trailing edge with an electrical insulator material and the
- DE 100 33 839 A1 discloses a dryer device in a sheet-fed printing press which, in addition to a blown air nozzle and / or a radiation source
- High-voltage electrode comprises, through which the laminar layer carried on the printing material is to be destroyed.
- the invention has for its object to provide an improved device and a printing machine for multiple printing of substrate sheets with the associated method.
- Transport path sections are prevented.
- a "beating" of the trailing sheet section is avoided, which is of great advantage for both a sheet side that is not freshly printed, but in particular for a sheet page that is already freshly printed.
- the latter is particularly advantageous in the event that there is a risk of gravity-related, premature detachment of a trailing sheet section from the preceding transport means in the case of a sloping transport path section preceding the printing point. This can lead to an uncontrollable impact on the - e.g. B. ink-guiding - cylinder of the printing point to be run, and thereby lead to smearing or duplication of the printed image.
- the substrate sheet executes a movement guided by holding devices.
- an electrode directed towards the transport path is or is arranged in such a way that, when electrical voltage is present, a substrate sheet passed over the voltage electrode can be electrostatically charged or charged.
- the process of electrostatic application / holding is supported by blowing air directed onto the transport path, particularly preferably at the same time as or immediately before the application of the electrical field.
- Fig. 1 shows an embodiment of a printing unit in the first embodiment
- Fig. 2 is an enlarged view of the printing unit in the first embodiment Fig. 1;
- FIG. 3 shows a section of the printing unit according to FIG. 3, which includes the transition between the pressure points, with devices for electrostatically charging the substrate;
- Fig. 4 shows an embodiment of a printing unit in a second embodiment
- FIG. 5 shows an enlarged illustration of the printing assembly in the second embodiment from FIG. 4;
- FIG. 6 shows a section of the printing unit according to FIG. 4, including the transition between the pressure points, with devices for electrostatically charging the substrate;
- FIG. 8 shows a rotating transport means with electrodes and blowing devices from obliquely to the right
- FIG. 9 is an end view of a rotating means of transport with electrodes and blowing devices with a transfer point from the preceding cylinder and delivery point to the next cylinder or means of transport;
- a printing press in particular a printing press printing on an arc-shaped printing material 02, comprises a feed device 01 on the input side, e.g. B.
- Sheet feeder 01 or, if applicable, a roll unwinder with the following
- Cross cutting device through which the printing machine is supplied with printing material 02 on the input side, a printing point group 03; 03 * with several printing units 06; 07; 08; 09, through which the sheet-like printing material 02, printing material sheet 02 for short, can be printed one or more times on one or both sides in one or more colors, or
- the printing press is designed as a security printing press, e.g. B. designed to print from already printed or unprinted
- Sheets with a plurality of banknotes per sheet 02 as products or
- 07; 08; 09 a printing unit 08 arranged on one side and - upstream or preferably downstream - two printing units 06; forming a double printing unit 06, 07 or a double printing point 11; 07, or four pairs of pairs, a double printing unit 06, 07; 08, 09 or a double printing point 1 1; 12 printing units 06; 07.08; 09 may be provided.
- Double printing points 11; 12 are executed.
- the transport path between the printing points 1 1; 12 runs from top to bottom here. This should not only be understood to mean a movement which is always directed downwards along the entire transport path, but rather a transport movement which results from the top downwards.
- the two pressure points 11; 12 forming printing units 06; 07; 08; 09 are advantageous here in one, the pressure point group 03; 03 * assigned frame one above the other or in two one above the other, each a printing unit 03.1; 03.2; 03.1 * ; 03.2 * assigned partial frames.
- the printing units 06; 07; 08; 09 of the spaced-apart pressure points 1 1; 12 can in principle be based on pressure processes that differ from one another. At least that on the second or in the transport path
- downstream printing point 1 1 participating printing unit or printing units 06; 07 is or are preferably based on an indirect printing process.
- Printing material sheet 02 preferably by a transport system with successive
- Sheet transfer between rotating transport means 33; 38; 39 e.g. B. transport cylinders 33; 38; 39 and / or transport drums 33; 38; 39, causes.
- On the output side of the last pressure point 1 1 to a subsequent unit or to Product delivery 04 can also be done via a system based on sheet transfer between cylinders and / or drums, but is here by a
- Transport system 13 with rotating traction means, for. B. a chain gripper system 13 causes. Downstream of the last printing point 11, at least one drying device 14, in particular a radiation dryer 14, such as e.g. B. IR or UV dryer can be provided.
- a radiation dryer 14 such as e.g. B. IR or UV dryer
- a printing unit 06 designed for indirect printing; 07; 08; 09 comprises a transmission cylinder 16; 17; 18; 19 trained cylinder 16; 17; 18; 19, e.g. B.
- a double printing point 11; 12 is the as
- Impression cylinder effective printing unit cylinder also by an ink-guiding printing unit cylinder 17; 16; 18; 19;, in particular the transfer cylinder 17; 16; 18;
- the forme cylinder 21; 22; 23; 24 and the assigned inking unit 26; 27; 28; In principle, 29 can be designed as based on any printing method, but are preferably designed as based on an, in particular indirect, planographic printing method or on an, in particular indirect, letterpress or relief printing method, in particular letter set printing method.
- the forme cylinder 21; 22; 23; 24 on its scope in the first-mentioned embodiment, not shown here
- Planographic printing form e.g. B. an offset printing form for wet or dry offset, which with an inking unit suitable for planographic printing, for the case of wet offset e.g. B. a roller inking unit 26; 27; 28; 29 with upstream ink fountain and with a dampening unit, and for dry offset e.g. B. with an example
- Cup roller and a short inking unit 26; 27; 28; 29 cooperates.
- the forme cylinder 21; 22; 23; 24 on its circumference a high-pressure mold, not shown here, which is equipped with an inking unit 26; 27; 28; 29, e.g. B. a roller inking unit 26; 27; 28; 29 interacts with the upstream ink fountain.
- 07; 08; 09 trained printing group 06; 07; 08; 09 comprises as transfer cylinder 16;
- Inking devices 26; 27; 28; 29, e.g. B. inking units 26; 27; 28; 29 can be colored.
- the forme cylinders 21; 22; 23; 24 and assigned inking units 26; 27; 28; 29 of a collective printing unit 06; 07; 08; 09 all in the above sense as working according to planographic printing or working according to high pressure, or partly as working according to planographic printing and another part as working according to high pressure.
- this can also be used as a collective printing unit 07; 06; 09; 08 be formed and one in the manner set out above as a collecting cylinder 17; 16; 19; 18 effective transfer cylinder 17; 16; 19; 18 have.
- Each printing point 11; 12 is one of the two pressure point 1 1; 12 forming Printing unit cylinder 16; 17; 18; 19; 19 * as a transport cylinder 16; 17; 18; 19; 19 * and effective as such and preferably comprises on the circumference one or more holding devices 31; 32, in particular so-called gripper bars 31; 32.
- the sheet is transported from one printing point 12; 1 1, in particular of which as a transport cylinder 19; 19 * effective printing unit cylinder 19; 19 * , further downstream pressure point 1 1; 12, especially to their as
- Transport drum 33; 38; 39 which preferably comprises at least one holding device 34 on the circumference, only indicated in FIG. 3, in particular a so-called gripper bar 34.
- the transport between the two pressure points 12; 1 1 is therefore preferably based on transport system 36 with successive sheet transfer between cylinders 19 involved in the transport; 19 * ; 17 and / or means of transport 33; 38; 39.
- pressure point group 03; 03 * with a transport path running from top to bottom between the pressure points 12; 11 the sheet transfer z.
- Pressure point 1 1 forming cylinder 16; 17 are thus advantageously arranged one above the other in a same frame or in two partial frames arranged one above the other.
- the one or more transport means 33; 38; 39 is or are z. B. also in the common rack, in one of the above. Partial frames, in a specially provided intermediate frame or - in the case of several means of transport 33; 38; 39 - if necessary divided among the above Partial frames and / or the intermediate frame provided.
- transport path running from top to bottom should not only be a movement which is always directed downwards along the entire transport path be understood, but z. B. also transport paths which one or more - for example by rotating transport means 33; 38; 39 conditional - include transport path sections with a sideways or even upward transport direction.
- an electrode 37; 41 in particular high-voltage electrode 37; 41, arranged in such a way that, when electrical voltage is present, a printing material sheet 02 passed past the voltage electrode can be electrostatically charged or charged.
- it is applied to the circumference of the rotating means of transport 33; 39, in particular transport drum 33; 39, which counteracts a premature loosening of a trailing sheet section of the printing material sheet 02 held at the front end due to gravity and / or centrifugal force.
- This is e.g. B.
- a sloping transport path section ie in a transport path section on which the printing material sheet 02 from above a transport means 33; 38; 39 or cylinder 17 is supplied and / or if, due to high production speeds and / or a small radius of the transport means 33; 39 high centrifugal forces occur.
- the electrode 37; 41 in this way from the scope of the assigned means of transport 33; 39 spaced apart on the transport path so that there is none Touch contact between on the means of transport 33; 39 transported substrate sheet 02 and electrode 37 comes. For example, there is a distance to the
- Substrate 02 supporting peripheral surface of at least 40 mm, in particular at least 50 mm provided.
- the electrode 37; 41 is preferably on the transport means 33; 39 supporting frame of the printing press arranged that the distance between electrode 37; 41 and means of transport 33; 39 is adjustable at least in the radial direction.
- Circumferential or lateral surface of the electrode 37; 41 cooperating means of transport 33; 39 is at least partially electrically conductive, for. B. formed by metal segments or preferably as a continuous over at least the substrate length metal sheet.
- the electrode 37 viewed in the direction of production rotation at most 60 °, in particular less than 45 °, preferably at most 30 ° behind the point of
- the electrode 37; 41 in the axial direction of the assigned rotating transport means 33; 39 considers a plurality, e.g. B. at least 20, spaced apart electrode tips 42, which are preferably spaced apart in pairs at a distance smaller than the distance to the circumference of the means of transport. These generate high field line densities at their tips. For example, a linear peak number density of 80 to 120 peaks per meter is provided. A voltage applied during operation or to be provided for operation lies, for. B. at least 20 kV, preferably even more than 25 kV.
- the electrode 37; 41 connected to a generator providing the corresponding voltage.
- the electrode 37 in the circumferential direction of the rotating transport means 33; 39 considers a blowing device 43; 44 upstream.
- This is - in the circumferential direction of the means of transport 33; 39 considered - preferably at most 25 °, in particular at most 15 ° in front of the electrode 37; 41 arranged and thus supports the creation of the
- the blow device 43; 44 in the housing of the electrode 37; 41 can be integrated, for example, by the means of transport 33; 39 facing side includes both the electrode tips 42 and blown air openings 49.
- the latter can surround the electrode tips 42 in a ring-like manner, for example.
- one or more drying devices 46 e.g. B.
- Radiation dryer 46 such as IR or UV dryer, on the peripheral section of the rotating transport means 33; 39 be directed.
- Radiation dryer 46 such as IR or UV dryer, on the peripheral section of the rotating transport means 33; 39 be directed.
- two associated electrodes 37; 41 is the at least one drying device 46 z. B. arranged in the intermediate angular range.
- Peripheral surface of the transport means 33; 39 cooperating cleaning device 47 is provided. This can be used for an upstream version
- Double printing point 12 preferably in an angular range of the means of transport 33; 39 may be provided, which is not in the transport path ..
- Electrodes 37; 41 and blowing devices 43; 44 set out.
- the pressure point group 03; 03 * such that two pressure points 11; 12 are provided in the transport path, with at least one, preferably downstream, pressure point 11; 12 as a double printing point 11 for simultaneous two-sided printing and / or with at least one as a collective printing unit 06; 07 executed printing unit 06; 07; 08; 09 is designed for simultaneous multi-color printing, is in the transport path between the two printing points 11; 12 at least one above-mentioned means of transport 33; 39 with at least one associated electrode 37; 41 provided.
- Preferred is the only or at least the means of transport 33 which is connected to the transport cylinder 19; 19 * effective cylinder 19; 19 * follows the upstream pressure point 12, at least one electrode 37; 41, for example at least the electrodes 37; 41, assigned.
- Forme cylinders 21; 22 and assigned inking units 26; 27 e.g. FIGS. 1, 2, 4 and 5.
- the printing unit cylinders 16; 17; 18; 19; 19 * for the formation of the downstream printing point 11 are preferably three times the size, ie for receiving three printing material sheets 02 on the circumference.
- Printing point 12 forming cylinder 19 * is an importantb understand only as a counter-pressure cylinder 19 * (see, for. Example, Fig. 1 and Fig. 2), for example, only a rotating drum 19 * (see, for. Example, Fig. 1 and Fig. 2), for example, only a rotating drum 19 * (see, for. Example, Fig. 1 and Fig. 2), for example, only a rotating drum 19 * (see, for. Example, Fig. 1 and Fig. 2), for example, only a rotating
- Transport means 33 in particular transport drum 33, are provided between the transport cylinder 19 * of the upstream pressure point 12 and the printing unit cylinder 17 of the downstream pressure point 11 acting as a transport cylinder 17.
- an electrode 37; 41 assigned.
- the or the respective electrode 37; 41 is advantageous one above
- the blowing device 44 to the second electrode 41 can optionally be omitted.
- several rotating means of transport 33; 38; 39 between the two pressure points 12; 11 can be provided in the following manner.
- 1 1 may be provided, but preferably several, for. B. three such
- Means of transport 33; 38; 39 provided, via which the to be transported Printing material sheet 02 is passed on successively.
- the downstream first means of transport 33 is at least one of the above.
- Means of transport 39 one in o. G. Way provided electrode closer to the delivery point.
- the printing unit cylinders 16; 17; 18; 19; 19 * to form the upstream printing point 12 are preferably double-sized in both variants, ie to accommodate two printing material sheets 02 on the circumference.
- Inking device inking unit
- Inking device inking unit
- Inking device inking unit holding device, gripper bar
- Electrode high voltage electrode
- Blowing device drying device radiation dryer Blow pipe cleaning device
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Rotary Presses (AREA)
- Printing Methods (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018125033.9A DE102018125033A1 (en) | 2018-10-10 | 2018-10-10 | Device, method and printing machine for multiple printing of printing material sheets |
PCT/EP2019/061956 WO2020074135A1 (en) | 2018-10-10 | 2019-05-09 | Device, method and printing press for multiple printing of printing material sheets |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3863855A1 true EP3863855A1 (en) | 2021-08-18 |
EP3863855B1 EP3863855B1 (en) | 2022-12-21 |
Family
ID=66476654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19723106.1A Active EP3863855B1 (en) | 2018-10-10 | 2019-05-09 | Device, method and printing press for multiple printing of printing sheets |
Country Status (6)
Country | Link |
---|---|
US (1) | US11207880B2 (en) |
EP (1) | EP3863855B1 (en) |
JP (1) | JP6991393B2 (en) |
CN (1) | CN112888569B (en) |
DE (1) | DE102018125033A1 (en) |
WO (1) | WO2020074135A1 (en) |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3174748A (en) * | 1963-06-17 | 1965-03-23 | Harris Intertype Corp | Electrostatic sheet hold-down |
US3341195A (en) * | 1965-03-29 | 1967-09-12 | Harris Intertype Corp | Sheet handling apparatus |
US3346253A (en) * | 1965-03-31 | 1967-10-10 | Frank R Paschke | Electrostatic sheet control means |
US3342129A (en) * | 1966-12-19 | 1967-09-19 | Harris Intertype Corp | Method and apparatus for electrostatically driving a sheet in a rotary press |
DE19920371A1 (en) * | 1998-06-03 | 1999-12-09 | Heidelberger Druckmasch Ag | Sheet inverter for rotary printing press |
DE10033839A1 (en) * | 2000-07-12 | 2002-01-24 | Roland Man Druckmasch | Dryer inside a sheetfed press |
DE10033838A1 (en) * | 2000-07-12 | 2002-01-24 | Roland Man Druckmasch | Device for holding sheet of paper on impression cylinder of printing machine uses both electrostatic field generation and pressurized air jets |
DE10041934A1 (en) * | 2000-08-25 | 2002-03-07 | Roland Man Druckmasch | Method and device for coating printed products |
JP4829033B2 (en) * | 2006-08-09 | 2011-11-30 | 株式会社小森コーポレーション | Information recording medium supply device |
JP2010094953A (en) | 2008-10-20 | 2010-04-30 | Mitsubishi Heavy Ind Ltd | Printer and paper sheet printer |
DE102010028702B4 (en) * | 2010-05-06 | 2013-09-05 | manroland sheetfed GmbH | Turning device of a sheet-fed printing machine |
DE102010028698A1 (en) | 2010-05-06 | 2011-11-10 | Manroland Ag | Sheet guide device e.g. storage drum, for use as e.g. feeder, in e.g. sheet fed press, has guide surface for guiding electrical charged printed sheets, where guide surface is provided with smooth and rough portions with different roughness |
DE102012200650A1 (en) * | 2011-02-08 | 2012-08-09 | Manroland Ag | Sheet-fed-printing machine has sheet feeder, printing mechanism and coating unit for printing on printing sheet with statistical printing image identical for all printing sheets |
US9122205B2 (en) * | 2013-05-29 | 2015-09-01 | Xerox Corporation | Printing apparatus and method using electrohydrodynamics |
DE102015111525A1 (en) * | 2014-08-08 | 2016-02-11 | manroland sheetfed GmbH | Modular inkjet printing device |
EP3017946A1 (en) | 2014-11-07 | 2016-05-11 | KBA-NotaSys SA | Simultaneous recto-verso printing press |
-
2018
- 2018-10-10 DE DE102018125033.9A patent/DE102018125033A1/en not_active Withdrawn
-
2019
- 2019-05-09 JP JP2021515650A patent/JP6991393B2/en active Active
- 2019-05-09 CN CN201980061821.7A patent/CN112888569B/en active Active
- 2019-05-09 EP EP19723106.1A patent/EP3863855B1/en active Active
- 2019-05-09 WO PCT/EP2019/061956 patent/WO2020074135A1/en unknown
- 2019-05-09 US US17/277,047 patent/US11207880B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN112888569A (en) | 2021-06-01 |
DE102018125033A1 (en) | 2020-04-16 |
JP6991393B2 (en) | 2022-01-12 |
EP3863855B1 (en) | 2022-12-21 |
US20210316546A1 (en) | 2021-10-14 |
US11207880B2 (en) | 2021-12-28 |
WO2020074135A1 (en) | 2020-04-16 |
JP2021527585A (en) | 2021-10-14 |
CN112888569B (en) | 2022-05-27 |
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