EP0085752B1 - Druckwerk für eine Offsetrotationsdruckmaschine - Google Patents

Druckwerk für eine Offsetrotationsdruckmaschine Download PDF

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Publication number
EP0085752B1
EP0085752B1 EP82109663A EP82109663A EP0085752B1 EP 0085752 B1 EP0085752 B1 EP 0085752B1 EP 82109663 A EP82109663 A EP 82109663A EP 82109663 A EP82109663 A EP 82109663A EP 0085752 B1 EP0085752 B1 EP 0085752B1
Authority
EP
European Patent Office
Prior art keywords
printing
cylinder
printing unit
blanket
cylinders
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.)
Expired
Application number
EP82109663A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0085752A1 (de
Inventor
Hermann Fischer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0085752A1 publication Critical patent/EP0085752A1/de
Application granted granted Critical
Publication of EP0085752B1 publication Critical patent/EP0085752B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/10—Rotary lithographic machines for offset printing using one impression cylinder co-operating with several transfer cylinders for printing on sheets or webs, e.g. satellite-printing units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2217/00—Printing machines of special types or for particular purposes
    • B41P2217/10—Printing machines of special types or for particular purposes characterised by their constructional features
    • B41P2217/11—Machines with modular units, i.e. with units exchangeable as a whole

Definitions

  • the invention relates to a printing unit for an offset rotary printing machine with at least two partial printing units each comprising a blanket cylinder, a plate cylinder, an inking unit and a dampening unit for supplying one color each to the printing medium running via a printing cylinder.
  • Multicolor rotary offset printing machines in which each color is applied to the printing medium by means of a rubber cylinder, i.e. machines of the type which is generally customary today, have the disadvantage that, as a result of several printing lines for each color, the moistened paper is mechanically stressed by several flexing processes. This mechanical stress on the print carrier leads on the one hand to difficulties with the register, which prolong the setting times and increase the waste. On the other hand, when using poorer paper, there is a plucking along each printing line, which tears small particles out of the paper, which leads to unclean printing and rapid soiling of the machine.
  • Two-color printing machines have already been described, cf. US-PS 2 894 452 and DE-PS 442 934, in which two colors can be printed simultaneously.
  • two plate cylinders are attached to a common rubber cylinder, from which the printing takes place.
  • these arrangements have the disadvantage that clean pressure cannot be achieved at least over a longer period of time.
  • This disadvantage can be remedied by assigning two dampening units to each plate cylinder, cf. DE-PS 2 323 871.
  • two dampening units per plate cylinder increase the mechanical complexity of the printing press, bring with it problems of accessibility to the printing unit parts and require a more complex adjustment of the fountain solution guide.
  • an offset printing machine which can be used optionally for multicolour face printing or face and back printing, cf. DE-PS 271 645, which has a central printing cylinder and around it a number of partial printing units, each with a blanket cylinder, a plate cylinder, an inking unit and a dampening unit.
  • ink is applied to the rubber elevator of the printing cylinder, for example by two partial printing units.
  • the two colors are then delivered to the print carrier at the same time.
  • This arrangement uses three rubber cylinders to apply two colors.
  • each fine printing ink is also applied to the printing medium by means of its own rubber cylinder, which cooperates with the common printing cylinder, so that registration problems are not eliminated. Otherwise, the arrangement presupposes that the partial printing units are arranged around the central printing cylinder. This makes access to the printing unit parts more difficult. In addition, such a machine cannot be expanded on a modular basis.
  • the invention is based on the object of creating a printing unit for an offset rotary printing press of the type mentioned at the outset which does not involve registration problems, which provides clean printing over a long working period, the fountain solution guidance of which is easily adjustable and with which papers of poorer quality are also printed can be and that is easy to set up.
  • the first plane A The axes of the rubber cylinders 2 and 4 are in a second plane B, which is at a short distance from the plane A and parallel to it .
  • This measure ensures that the contact pressure between the rubber cylinders 1 to 4 is adjustable by slight adjustment movements of the rubber cylinders 1 and 3 approximately in the direction of arrows a or by slight adjustment of the rubber cylinders 2 and 4 approximately in the direction of arrows b.
  • a printing cylinder 17 is assigned to the blanket cylinder 4 and has the same diameter as the plate cylinders 5 to 8.
  • Deflection wheels for a chain system 20 with grippers are arranged on the axis of the pressure cylinder 17.
  • the grips of the chain system 20 are handed over the sheets fed on a system table 18 in the direction of arrow c by means of a pre-gripper 19.
  • the sheets are partially guided around the printing cylinder 17 by means of the chain system 20, the printing taking place.
  • the sheets are then removed for delivery.
  • the printing cylinder 8 can also be equipped with grippers G ⁇ : v: The sheets are then fed and removed by known means.
  • the rubber cylinders 1 to 4 are placed against each other.
  • the blanket cylinder 1 receives a partial print image of the first color from the plate cylinder 5.
  • the rubber cylinders 2, 3 and 4 each receive a partial print image in a different color from the plate cylinders 6, 7 and 8 assigned to them.
  • the rubber cylinder 1 delivers its partial print image to the rubber cylinder 2. This in turn transmits its two partial print images to the rubber cylinder 3, which in turn forwards three partial print images with three different colors to the rubber cylinder 4.
  • dampening units Since not only ink, but also dampening fluid is transferred from the blanket cylinder to blanket cylinder, it is advisable to give the dampening units a basic setting which provides that the amount of dampening fluid supplied to the plate cylinder in each case from the dampening unit 13 via the dampening unit 14 and the dampening unit 15 to the dampening unit 16, i.e. the dampening unit which interacts with the printing blanket cylinder, decreases.
  • This basic setting can be overlaid by a characteristic curve control depending on the machine speed, but also by controls depending on the paper quality and / or the subject to be printed.
  • the printing unit according to FIG. 2 has two partial printing units, each with a rubber cylinder 30 or 31, a plate cylinder 32 or 33 and an inking unit 34 or 35 and a dampening unit 36 or 37.
  • a pressure cylinder 38 is assigned to the rubber cylinder 30, to which a pressure carrier web 39 is fed via two deflection rollers 40, 41 in the direction of the arrow e.
  • a partial print image of a first color is applied to the rubber cylinder 30 by means of the plate cylinder 32.
  • a partial print image of a second color is applied from the plate cylinder 33 to the rubber cylinder 30 via the rubber cylinder 31.
  • both partial print images are applied to the print carrier web 39 along the print line to the print cylinder 38.
  • the print carrier web 39 thus receives a two-color fine print.
  • the printing unit can be used to perform perfecting and reverse printing with one color each.
  • Another advantage is that the direction of rotation of the cylinders and rollers remains the same in both productions.
  • the printing unit shown in FIG. 2 can be followed by further printing units, which are either designed only for performing a perfecting or printing, or which are also associated with printing cylinders 38, so that in the other printing units either a perfecting or a two-color straight printing is optionally available can be carried out.
  • FIG. 2 Another advantage of the arrangement according to FIG. 2 is the fact that it can be constructed using a conventional perfecting unit, the parts of which cannot must be changed, since only an additional pressure cylinder and some deflection rollers are required.
  • a printing cylinder 66 is provided, with which a printing carrier web 67 can be pressed against the rubber cylinder 53.
  • the rubber cylinder 50 receives a partial print image in a first color from the plate cylinder 54.
  • the rubber cylinder 51 also receives the first partial printing image from the rubber cylinder 50 and passes both partial printing images on to the rubber cylinder 52, which in turn receives a partial printing image of a third color from the plate cylinder 56.
  • the blanket cylinder 52 then passes on its three partial print images to the blanket cylinder 53, which receives a print image in a fourth color from the plate cylinder 57. This four-color print image is then applied to the print carrier web 57 along the print line to the printing cylinder 66.
  • the printing unit shown in FIG. 3 offers still further possibilities of printing.
  • the two rubber cylinders 50 and 53 could be pivoted about the axes of the plate cylinders 54 and 57 until they touch. If the print carrier web is then guided along the path shown in dashed lines, a two-color face printing and a two-color reverse printing can be carried out in a conventional manner.
  • Another variant arises when the print carrier web is guided along the dotted path. In this case, three colors can be applied in straight printing and one color in reverse printing.
  • the complete perfecting takes place again along a single printing line, the rubber cylinder 53 simultaneously acting as a printing cylinder. In the latter two settings of the machine, the pressure cylinder 66 is to be turned off from the rubber cylinder 53.
  • the print carrier web could also be passed horizontally between the rubber cylinders 50 to 53, so that it receives a perfecting between the rubber cylinders 50 and 51 and 52 and 53, again the printing cylinder 66 would have to be switched off. In this case, the cylinders 51 and 52 would have to be separated and the direction of rotation of the right-hand cylinder group changed.
  • the printing unit according to FIG. 4 shows the same basic structure as the arrangement according to FIG. 3. It accordingly comprises four partial printing units, the rubber cylinders of which are designated 50, 51, 52 and 53.
  • a pressure cylinder 68 designed as a rubber cylinder interacts with the rubber cylinder 53.
  • a plate cylinder 69 with an inking unit 70 and a dampening unit 71 can be set on the printing cylinder 68.
  • a fifth partial printing unit is hereby formed.
  • the printing carrier web 67 receives four partial printing images with four different colors as face printing from the rubber cylinder 53. At the same time, a printing in one color takes place via the printing cylinder 68.
  • inking and dampening units instead of the inking and dampening units shown, it is also possible to use other known inking and dampening units, for example those which are provided with separate application rollers for the ink and dampening water guide.
  • the invention is not restricted to the exemplary embodiments shown.
  • the arrangement according to FIG. 1 could also be designed for printing on a web.
  • the web would then be passed between cylinders 4 and 17.
  • the arrangements according to FIGS. 2 and 3 could also be designed for printing sheets.
  • the pressure cylinders would have to be provided with grippers.
  • means for supplying and removing the sheets would have to be provided, as indicated in FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
EP82109663A 1982-02-05 1982-10-20 Druckwerk für eine Offsetrotationsdruckmaschine Expired EP0085752B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3203948A DE3203948C2 (de) 1982-02-05 1982-02-05 Rotationsoffsetdruckmaschine
DE3203948 1982-02-05

Publications (2)

Publication Number Publication Date
EP0085752A1 EP0085752A1 (de) 1983-08-17
EP0085752B1 true EP0085752B1 (de) 1986-09-03

Family

ID=6154876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109663A Expired EP0085752B1 (de) 1982-02-05 1982-10-20 Druckwerk für eine Offsetrotationsdruckmaschine

Country Status (4)

Country Link
US (1) US4491070A (ja)
EP (1) EP0085752B1 (ja)
JP (1) JPS58138647A (ja)
DE (1) DE3203948C2 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207791C2 (de) * 1982-03-04 1984-10-25 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Rotationns-Offsetdruckmaschine
DD269356A1 (de) * 1988-02-04 1989-06-28 Polygraph Leipzig Bildtransportdruckmaschine
DD269355A1 (de) * 1988-02-04 1989-06-28 Polygraph Leipzig Mehrfarbendruckmaschine
DD285877A7 (de) * 1988-02-04 1991-01-10 ���@��������@���������@ ������@������� @�������k�� Druckmaschine
DD285878A7 (de) * 1988-02-04 1991-01-10 ���@��������@���������@ ������@������� @�������k�� Druckmaschine fuer schoen- oder schoen- und widerdruck
AU2405795A (en) * 1994-04-28 1995-11-29 Nilpeter A/S A printing apparatus comprising at least one printing module
GB0003760D0 (en) * 2000-02-17 2000-04-05 Xaar Technology Ltd Droplet deposition apparatus
US6474231B1 (en) * 2000-07-26 2002-11-05 Heidelberger Druckmaschinen Ag Multi-color printing press with common blanket cylinder

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE116209C (ja) *
DE271645C (ja) *
DE442934C (de) * 1924-03-26 1927-04-09 Albert Schnellpressen Rotationsgummidruckmaschine
US2894452A (en) * 1956-05-02 1959-07-14 Nelson W Trisler Moistening system for rotary offset machine
US3263606A (en) * 1964-05-27 1966-08-02 William G Poynter Multicolor perfecting press having an offset blanket with electromagnetic support means
DE1235953B (de) * 1965-03-17 1967-03-09 Koenig & Bauer Schnellpressfab Bogen-Offset-Rotationsdruckmaschine fuer wahlweisen Schoen- und Widerdruck oder Schoendruck
NL6705390A (ja) * 1966-04-19 1967-10-20
DE1561068B1 (de) * 1967-02-01 1970-04-30 Koenig & Bauer Schnellpressfab Vierfarben-rotations-bogenoffsetdruckmaschine zur wahlweisen verwendung für den schöndruck oder den schön- und widerdruck
DE1815207A1 (de) * 1968-06-19 1970-02-26 O M S O Sarl Hochleistungs-Offset-Maschine
DE1761780C2 (de) * 1968-07-06 1973-11-22 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenubergabetrommel an einer Bogen Rotationsdruckmaschine fur Buch oder Ofsetdruck
CH502897A (de) * 1970-05-26 1971-02-15 De La Rue Giori Sa Mehrfarben-Offset-Rotationsdruckmaschine
SE342407B (ja) * 1970-07-10 1972-02-07 Printing Equipment Ab
US4056056A (en) * 1973-03-21 1977-11-01 De La Rue Giori S.A. Rotary printing press
FR2228616A1 (ja) * 1973-05-07 1974-12-06 De La Rue Giori Sa
CH572807A5 (ja) * 1973-05-11 1976-02-27 Maschf Augsburg Nuernberg Ag
DE2637795C2 (de) * 1976-08-21 1981-12-24 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Hauptantrieb für Rollenrotations-Offsetdruckmaschinen
DD137829A1 (de) * 1978-07-17 1979-09-26 Harald Feustel Offset-druckeinheiten fuer gummi-gummi-druck
DD137559A1 (de) * 1978-07-17 1979-09-12 Harald Feustel Druckeinheiten von offset-rollenrotationsmaschinen
DD137558A1 (de) * 1978-07-17 1979-09-12 Harald Feustel Druckeinheiten von offset-rollenrotationsmaschinen
DD137557A1 (de) * 1978-07-17 1979-09-12 Harald Feustel Druckeinheiten von offset-rollenrotationsmaschinen
SE426153B (sv) * 1979-01-22 1982-12-13 Wifag Maschf Drivanordning for en valsrotations offsettryckmaskin

Also Published As

Publication number Publication date
DE3203948C2 (de) 1984-03-22
DE3203948A1 (de) 1983-08-18
EP0085752A1 (de) 1983-08-17
US4491070A (en) 1985-01-01
JPS58138647A (ja) 1983-08-17

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