WO1998006580A1 - Procede et appareil d'impression couleur - Google Patents

Procede et appareil d'impression couleur Download PDF

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Publication number
WO1998006580A1
WO1998006580A1 PCT/GB1997/002022 GB9702022W WO9806580A1 WO 1998006580 A1 WO1998006580 A1 WO 1998006580A1 GB 9702022 W GB9702022 W GB 9702022W WO 9806580 A1 WO9806580 A1 WO 9806580A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
printing
station
stations
press
Prior art date
Application number
PCT/GB1997/002022
Other languages
English (en)
Inventor
Junichi Kobayashi
Original Assignee
Ko-Pack International (Europe) Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GBGB9616998.2A external-priority patent/GB9616998D0/en
Priority claimed from GBGB9623328.3A external-priority patent/GB9623328D0/en
Application filed by Ko-Pack International (Europe) Limited filed Critical Ko-Pack International (Europe) Limited
Priority to AU37010/97A priority Critical patent/AU3701097A/en
Publication of WO1998006580A1 publication Critical patent/WO1998006580A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/06—Turning-bar arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/04—Rotary letterpress machines for printing on webs
    • B41F5/12—Rotary letterpress machines for printing on webs for printing on one side and on the other side of webs between the same forme and impression cylinders

Definitions

  • This invention relates to a method and apparatus for colour printing and is particularly applicable to the printing of labels, flexible packaging, and like materials in the field of product and service presentation and wrapping, and the broad aspects of the invention are applicable in the printing field generally, particularly in relation to articles which are printed in continuous web form, in the sense that the web is of length of the order of several hundreds of metres, and is thus printed continuously and wound continuously onto a paper core.
  • the invention may be applicable to more general processes of surface treatment and techniques therefor for webs and the like.
  • the process disclosed herein has been developed and is intended primarily for achieving a spectacular increase in the colour treatment of web materials
  • the techniques disclosed herein are of more general application and, for example, may lead to significant technical advantages in the enhanced utilisation of apparatus related to printing apparatus employing web treatment stations other than printing stations.
  • an article which is printed in the continuous web form mentioned above is a web of labels, in which the main body of the web takes the form of a continuous sheet of release material or carrier agent and comprises a sheet of paper or plastics material coated with a release agent such as silicone, together with a face material (on which the labels are to be printed) , comprising a film or paper substrate coated with adhesive for application to a product.
  • a web of labels in which the main body of the web takes the form of a continuous sheet of release material or carrier agent and comprises a sheet of paper or plastics material coated with a release agent such as silicone, together with a face material (on which the labels are to be printed) , comprising a film or paper substrate coated with adhesive for application to a product.
  • the Ko-Pack All-In-One-Pass press has established the technique of colour printing such a web, for example in 6 colours, these being applied at 6 corresponding colour printing stations at circumferentially spaced positions around the periphery of one or more impression drums.
  • An object of the present invention is to provide a method and apparatus applicable to the "all-in-one-pass" technique of printing utilising a single printing press having corresponding printing stations for printing colours onto a web, which is colour-printed in one pass through the press, wherein the number of colours obtainable from the printing press in a single pass exceeds the number of printing stations in the press and through which the web passes.
  • a further alternative objective of the present invention is to provide a method and apparatus adapted to increase the output of a single printing or surface treatment station in a printing press or surface treatment apparatus, or to provide improvements generally in such methods and apparatus.
  • the method and apparatus provides the step of passing the web to be printed successively through a number of printing stations, for example six, in each of which a single colour is printed onto the web. Then, after that preliminary colour printing stage and suitable drying of the ink, the web is caused to re-enter the assembly of printing drum and printing stations so as to be subjected to a second sequence of colour printing stages, during which for example, six further colours are applied to the web so that it has then been printed with twelve colours during the course of one pass through the press. Moreover, this has been achieved by use of only six printing stations, each of which, in the embodiment, prints the web with two colours, one during each pass of the web through that station.
  • web synchronisation means which effects accurate registration between the web and the rotary elements of the printing station is provided in order that the successive printing steps at each subsequent station are effected with accurate registration of the web and associated printing elements.
  • a synchronising mechanism may be provided, for example comprising dancer rollers providing the facility for positional manipulation of the web with respect to the printing assembly between successive passes of the web through the printing stations.
  • registration marks there may be provided suitably placed registration marks on the web to enable proper synchronisation between the printing stages to be achieved.
  • substantially effective web synchronisation can be achieved by means of controlling web tension with the web drive and guide rollers, in combination with automatic means for web tension control. In this way, the registration between the web and the rollers maintains synchronisation at the web/roller contact regions.
  • the tension maintenance system operates to maintain an operating environment in which web control forces applied to the web material are maintained generally constant so that web de-synchronisation factors can be largely eliminated.
  • the web passes through each half of the printing station during its progressive pass, at laterally displaced portions of the station, whereby those portions of the station can each simultaneously print with their respective one of the two colours printed by that station, ie double the number of colours can be printed relative to the number of printing stations fitted or used.
  • a printing press having N printing stations is able to print up to 2N different colours on a single web in one pass.
  • the web width handled by the printing station in each successive pass of the web through it is less than the total working width of the station.
  • the working width of the printing station will be approximately twice the actual width of the web. It will be understood that the economies of construction and use in relation to the printing stations include the fact that each such printing station has its own individual drive input facility, and indeed requires only single provision of other facilities such as so- called washing-up facilities (utilised at the time of changing one or more printing colours at a printing station) .
  • the expression refers to a single printing station with respect to the location of that station in relation to the central impression (or printing) drum(s) in the press, and around which the two or more stations are grouped.
  • a given printing station will have a single drive facility, and single other facilities as described above. It is not to be understood that references to "the same printing station” necessarily indicates that successive passes of a web through that printing station will cause the web to be printed at the same portion of that station. Thus, for example, usually the web will be printed by two different halves of the same station in its one pass through the press.
  • the method and apparatus provides for the web during its single pass through the press to be turned and offset laterally with respect to its longitudinal direction prior to its second pass through a given printing station, whereby the web is reintroduced to the printing station from which it has relatively recently emerged, and is then printed again, on its back side or its front face, with additional colours.
  • the number of additional colours will be the same number as were originally printed on the web in the course of its first pass through the said station.
  • the printing stations are not described in detail as these are, in their general construction, substantially of known technology, apart from the measures described below and provided for the purpose of minimising ink migration.
  • the printing stations are accordingly chosen with regard to the web printing requirements and the principles of the present invention are applicable to printing stations of any required kind, for example letterpress or rotary screen printing stations, the latter being particularly applicable to the printing of acetate web materials for "invisible" labelling applications.
  • - Fig 1 shows a side elevation view of a printing press in accordance with the invention
  • Figs 2, 3, 4 and 5 show modifications of the embodiment of Fig 1 to provide for, respectively, four and six and eight and ten colour printing;
  • Fig 6 shows a general view of web pass-turning arrangements for transferring a continuous web, laterally with respect to several printing stations, between its successive passes around the impression drum and through the printing stations;
  • Fig 7 shows a modification of the apparatus of Fig
  • Fig 8 shows a perspective view, somewhat similar to that of Fig 6 showing apparatus for lateral transfer of a web between opposite side portions of a set of printing rollers between successive passes of the web through the printing stations of those rollers in accordance with the invention
  • Figs 8A and 8B show enlarged portions of Fig 8 in which the sequence of web paths is, in each case, indicated by a corresponding alphabetical sequence.
  • a printing press 10 comprises first and second unwind stations 12, 14, a printing assembly 16, comprising six printing stations 18, 20, 22, 24, 26 and 28, two rotary die cutting stations 30, two waste matrix rewinders 32, and a rewind station 34, for the finished and printed product.
  • Press 10 comprises numerous additional processing stations, some of which will be described below, and notably among these is the web cross-over unit 36 whereby the web is reintroduced to the printing stations so that it passes a second time through these and is printed with a second set of colours.
  • press 10 The general mode of operation of press 10 is as described in our prior patent EP 0 324 764 Bl, and will therefore be described more briefly and generally here, in the following terms.
  • unwind stations 12 and 14 there are provided corresponding rolls of paper or other roll material such as plastics, film and foil materials and flexible material for packaging applications. These web materials are unwound from rolls 38, 40 and conveyed via web- tensioning and drive and control roller systems indicated at 42, 44 and 46 to the region of printing assembly 16.
  • Roll 40 comprises web material to be printed at printing stations 18 to 28.
  • Roll 38 comprises web base carrier material for coating with release materials such as silicone and for subsequently assembly with the printed and adhesively-coated web material from roll 40, for subsequent die-cutting at stations 30 and removal of waste matrix material at 32 and subsequent rewinding at 34 of the finished product.
  • the two webs of, respectively release material and printed and adhesively-coated label material 44, 46 are merged and joined at the region 48, after which die- cutting and removal of the resultant matrix occurs prior to rewinding at 34.
  • Press 10 includes provision for numerous other operations which are incidental to the principal area of interest in the present application, namely the printing operation, and these will not be further described here.
  • Fig 1 10 of Fig 1 in which corresponding parts are identified by the same reference numerals as in Fig 1, notably the printing drums 50, 52 and their associated printing stations 20, 22, 24, 26 and 28.
  • These embodiments differ in the numbers of printing stations which are provided, these being two in Fig 2 , three in Fig 3 , four in Fig 4 and five in Fig 5.
  • the numbers of colours achieved from the press corresponds to twice the number of printing stations, and thus ten such colours are obtained from the five printing stations in the embodiment of Fig 5.
  • the web return means 36 seen in Fig 1 is not shown as such, for simplicity of illustration, and will now be described in more detail with reference to Fig 6.
  • the web return means 36 comprises an assembly whereby the web 46 is able to pass twice through each of the four printing stations (identified in Fig 6 by numerals 1, 2, 3 and 4, this being achieved by the provision of appropriate turn rollers at 54, 56, 58, 60, 62, 64, 66, 68 and 70.
  • the web is re- introduced to the printing stations 1, 2, 3 and 4 at an axially off-set position so that it is additionally printed with four further colours on the back or rear side of the web with respect to its first passage through those stations.
  • the web passes onwards at 72.
  • the press 74 is generally constructed in the same manner as the press 10 of Fig 1, but is provided additionally with flying splice twin unwind stations 76, 78 and an associated dancer-roll web tensioning station 80.
  • the press 74 has a capability of producing more complex label assemblies in which (as, for example, in the case of booklet labels) there is a requirement for three separate webs to be assembled to produce the finished product.
  • the twin unwind stations 76, 78 permit alternative use of rolls 82, 84 of web material according to requirements.
  • Press 74 also incorporates a second similar dancer- roll tensioning station 86 for the web material from primary roll 40 of web material to be printed.
  • Fig 8 it is to be noted first that the general layout of the printing components shown in Fig 8, and the associated structures, correspond generally to the printing region of the press 10 of Fig 1. Accordingly, for convenience of reference, the same reference numerals have been inserted in Fig 8 as appear in Fig 1.
  • Fig 8 shows the assembly on a larger scale and in perspective so that the paths of the webs can be seen more clearly, and the details will be described in more detail than was adopted in the case of Fig 1.
  • the functions performed in the apparatus of Fig 8 comprise the printing of two webs 100, 102 in printing assembly 16, namely at the printing stations 18, 20, 22, 24, 26 and 28.
  • Each of the webs 100, 102 is passed twice through its group of printing stations, so as to be subjected to the dual printing process according to the invention.
  • the two printing passes through the relevant print stations are identified at Pi and P2.
  • the opposite sides of the webs are identified, for both web 100 and web 102, by means of shading for one side and an unshaded showing for the other side.
  • the web 100 is printed in its pass PI on its unshaded side whereas in its pass P2 it is printed on its shaded side.
  • Fig 8 there are provided, in the course of the passage of the webs along their paths as shown in Fig 8, numerous web treatment and processing facilities and stations which effect various operations such as application of glue/hot melt, web guidance, flatbed die-cutting, ultraviolet drying, folding etc. These processes are not further described here, being in most cases relatively conventional for the processing of label and other webs.
  • Web 102 initially passes (PI) via printing stations 18 and 28 and guide rollers 110, 112 to a first lateral web turn roller 114 whence the web proceeds via a lateral run 116 to an end roller 118 and a lateral return run 120 to an offset second lateral turn roller 122. Then the web proceeds via an in-line run 124, and a roller 112. After passing round roller 112, the web returns in a run (not shown) to printing station 18, followed by printing station 28, with the shaded side of the web uppermost prior to entry into the nip of printing station 18, as in the case of its first pass through that printing station. Effectively, the web has been laterally offset by virtue of the distance of offset between the lateral turn rollers 114 and 122, so that it then re-enters between the rollers of printing station 18 at a laterally offset position.
  • Fig 8A shows, on a larger scale than Fig 8, the portion of Fig 8 corresponding to the web movements described in the last preceeding paragraph.
  • the portions of the travel of the web are indicated in sequence by the corresponding alphabetical sequence A to
  • web 100 passes a first time through printing stations 22, 20, 26 and 24, and thence via runs 126 and 128 to a first web lateral turn roller 130 and web lateral runs 132, 134 to a second web lateral turn roller 136 and web runs 138, 140, and hence into printing stations 22, 20, 26 and 24 in sequence.
  • Fig 8B in a manner similar to that of Fig 8A, the portion of the travel of the web described in the last preceding paragraph above is shown on a larger scale and with the sequence of web paths indicated by the corresponding alphabetical sequence from A to T.
  • the system for representation of the web to the printing stations enables double the number of colours to be printed in one pass of the web through the press, as compared with conventional press systems, and thus a press having, for example, four print stations is capable of printing eight colours in just one pass of the web through the press.
  • Each of the print stations is constructed so as to enable two different colours to be printed by that station simultaneously, while the web passes once through the press and twice through the print stations.
  • This dual colour printing is achieved by using only the cylinders, plates and gears normally associated with single colour printing, while achieving the dual colour process as described, thereby significantly reducing the "make-ready" time and costs normally associated with extra printing colours.
  • To minimise the effect of printing two colours with one roller at each printing station there may be provided means to inhibit lateral movement of colours/ink lengthwise of the rollers.
  • the rollers may be relieved or grooved at their outer peripheries at a central location so that ink migration is thereby inhibited.
  • Each of the dual printing stations is individually driven and fitted with its own single wash-up unit and just one inking system. An ultra-violet drying unit is provided for each print station.
  • printing or impression drums of 400 millimetres width enable maximum web widths of 400 millimetres or two webs at 200 millimetres width each, or of course a single 200 millimetre web.
  • the printing stations are disposed around printing drums, such as central impression drum 50.
  • the invention is equally applicable to other printing arrangements including printing stations in which the relative disposition of the printing stations is that of a stacked configuration with the individual stations generally vertically disposed with respect to each other.
  • the arrangements whereby the web makes a second pass through a given printing station are otherwise generally as described above.
  • these include, in continuous w.eb form, labels, smart cards, plastics articles, film and foil items and flexible packaging.
  • labels suitable for this format are booklet labels and Piggyback labels and other promotional labels.
  • the web material itself may comprise a continuous carrier with silicone release material thereon and combined with a continuous face material laminated with adhesive.
  • the web may be a continuous single web which is printed and converted ie a paper or board or film or plastic substrate.
  • the web may be printed on both of its sides, including on the side which is coated with adhesive, with the web being turned prior to passage through the same printing stations a second time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)

Abstract

L'invention concerne un procédé et un appareil d'impression couleur dans une presse à imprimer ou de traitement de surface de bande de papier dans un appareil de traitement de surface; le procédé utilise une technique une passe dans laquelle une bande de papier continue passe deux fois successives dans un poste d'impression ou de traitement de surface. De ce fait, la bande de papier est imprimée ou a subi un traitement de surface avec deux couleurs différentes dans le même poste d'impression, ce qui permet des économies de fabrication et de temps de réglage d'impression. On peut utiliser des postes d'impression typographique, à stencil rotatif, ou d'autres types de postes d'impression équipés de cylindres d'impression centraux ou superposés. L'invention concerne également une synchronisation de bande de papier par repérage positif de bande de papier et commande de tension automatique.
PCT/GB1997/002022 1996-08-13 1997-07-25 Procede et appareil d'impression couleur WO1998006580A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU37010/97A AU3701097A (en) 1996-08-13 1997-07-25 Method and apparatus for colour printing

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GBGB9616998.2A GB9616998D0 (en) 1996-08-13 1996-08-13 Method and apparatus for colour printing
GB9616998.2 1996-08-13
GB9623328.3 1996-11-08
GBGB9623328.3A GB9623328D0 (en) 1996-11-08 1996-11-08 Method and apparatus for colour printing
GB9709428.8 1997-05-12
GB9709428A GB2316063B (en) 1996-08-13 1997-05-12 Method and apparatus for colour printing

Publications (1)

Publication Number Publication Date
WO1998006580A1 true WO1998006580A1 (fr) 1998-02-19

Family

ID=27268429

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/002022 WO1998006580A1 (fr) 1996-08-13 1997-07-25 Procede et appareil d'impression couleur

Country Status (3)

Country Link
AU (1) AU3701097A (fr)
GB (1) GB2316063B (fr)
WO (1) WO1998006580A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007030844A1 (de) * 2007-07-03 2009-01-08 Koenig & Bauer Aktiengesellschaft Rollenrotationsdruckmaschine, insbesondere Tiefdruckmaschine, mit halbbreiter Bedruckstoffbahn
EP2340936A1 (fr) * 2009-12-29 2011-07-06 Van der Heijden, Vincentius Johannes Maria Procédé et dispositif pour alimenter un film dans une machine d'impression
AT509419B1 (de) * 2010-02-03 2013-12-15 Bsw Machinery Handels Gmbh Verfahren und vorrichtung zum kontinuierlichen beidseitigen beschichten einer gewebebahn

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE173390C (fr) *
US2318374A (en) * 1941-06-20 1943-05-04 Cranston Print Works Co Textile printing apparatus for printing one or both sides of fabrics
DE1048597B (de) * 1959-01-15 Schnellpressenfabrik Koenig G. Bauer Aktiengesellschaft, Würzburg Rotationshochdruckmaschine für Schön- und Widerdruck
GB816837A (en) * 1956-07-20 1959-07-22 Standard Register Co Web printing press
DE3546346A1 (de) * 1985-02-14 1986-08-14 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Vorrichtung zum regeln der bahnlage
DE3130524C2 (fr) * 1981-08-01 1987-04-09 M.A.N.- Roland Druckmaschinen Ag, 6050 Offenbach, De
FR2659268A1 (fr) * 1990-03-07 1991-09-13 France Rayonnement Dispositif de sechage pour machines imprimantes.
EP0635365A1 (fr) * 1993-01-14 1995-01-25 Ferd. Rüesch AG. Machine rotative d'impression
EP0710558A1 (fr) * 1994-10-04 1996-05-08 Maschinenfabrik Wifag Machine à imprimer rotative pour bandes
EP0785069A1 (fr) * 1996-01-16 1997-07-23 Philippe Grenier Dispositif permettant d'imprimer d'un seul passage avec la même tête d'impression, un ruban recto/verso

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228610B4 (de) * 1992-08-28 2004-07-29 Koenig & Bauer Ag Papierführung bei Rollenrotationsdruckmaschinen

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE173390C (fr) *
DE1048597B (de) * 1959-01-15 Schnellpressenfabrik Koenig G. Bauer Aktiengesellschaft, Würzburg Rotationshochdruckmaschine für Schön- und Widerdruck
US2318374A (en) * 1941-06-20 1943-05-04 Cranston Print Works Co Textile printing apparatus for printing one or both sides of fabrics
GB816837A (en) * 1956-07-20 1959-07-22 Standard Register Co Web printing press
DE3130524C2 (fr) * 1981-08-01 1987-04-09 M.A.N.- Roland Druckmaschinen Ag, 6050 Offenbach, De
DE3546346A1 (de) * 1985-02-14 1986-08-14 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Vorrichtung zum regeln der bahnlage
FR2659268A1 (fr) * 1990-03-07 1991-09-13 France Rayonnement Dispositif de sechage pour machines imprimantes.
EP0635365A1 (fr) * 1993-01-14 1995-01-25 Ferd. Rüesch AG. Machine rotative d'impression
EP0710558A1 (fr) * 1994-10-04 1996-05-08 Maschinenfabrik Wifag Machine à imprimer rotative pour bandes
EP0785069A1 (fr) * 1996-01-16 1997-07-23 Philippe Grenier Dispositif permettant d'imprimer d'un seul passage avec la même tête d'impression, un ruban recto/verso

Also Published As

Publication number Publication date
GB9709428D0 (en) 1997-07-02
GB2316063B (en) 1998-12-30
GB2316063A (en) 1998-02-18
AU3701097A (en) 1998-03-06

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