EP0033440A2 - Machine à imprimer offset - Google Patents

Machine à imprimer offset Download PDF

Info

Publication number
EP0033440A2
EP0033440A2 EP81100158A EP81100158A EP0033440A2 EP 0033440 A2 EP0033440 A2 EP 0033440A2 EP 81100158 A EP81100158 A EP 81100158A EP 81100158 A EP81100158 A EP 81100158A EP 0033440 A2 EP0033440 A2 EP 0033440A2
Authority
EP
European Patent Office
Prior art keywords
dampening
offset printing
printing machine
machine according
roller
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
Application number
EP81100158A
Other languages
German (de)
English (en)
Other versions
EP0033440B1 (fr
EP0033440A3 (en
Inventor
Harry M. Dr.-Ing. Greiner
Peter Dr.-Ing. Decker
Burkhardt Dr.-Ing. Wirz
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
Priority to AT81100158T priority Critical patent/ATE8354T1/de
Publication of EP0033440A2 publication Critical patent/EP0033440A2/fr
Publication of EP0033440A3 publication Critical patent/EP0033440A3/de
Application granted granted Critical
Publication of EP0033440B1 publication Critical patent/EP0033440B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices

Definitions

  • the invention relates to an offset printing machine with a dampening unit and an inking unit, through which dampening liquid or ink can be supplied to the printing plate of a plate cylinder by means of rollers rolling on one another, the metering of the supply being meterable by changing the roller supply.
  • Such metering devices are known from DE-PS 1 055 011 and DE-AS 1 268 154 and are particularly suitable for the zone-wise regulation of the liquid supply in the roll axis direction.
  • the invention is based, to mitigate or eliminate the disturbances caused by short-term machine stoppers in the ink and dampening liquid supply.
  • a clutch is provided in the inking unit drive, the actuation of which interrupts the rotation of the inking rollers, while at the same time the inking rollers are switched off by the plate cylinder.
  • the measures which are fundamentally different with regard to the dampening unit and inking unit, ensure that at the time of restarting the print, that is to say when the reprint begins, with respect to the dampening unit and also the inking unit, there are additional printing conditions. This ensures for the first time that continued printing after stoppers is possible without any waste specification, which results in a significant increase in the effective printing performance and a reduction in the reject rate.
  • doctor device it has proven to be particularly advantageous to design the doctor device as an air knife with an air supply that can be switched on and off.
  • quasi continuous printing conditions can also be obtained during longer stoppers, which can be adapted to external conditions such as room climate etc. by controlling or regulating, for example, the ductor speed.
  • the ink is fed onto the plate cylinder 7 by a roller inking unit 8.
  • the dampening fluid required for the offset process is fed to the plate cylinder 7, or the lithographic printing plate fastened thereon, but not shown, by a conventional roller dampening unit 9.
  • This consists of four rollers, an application roller 30, a transfer roller 44, a metering roller 33, and a ductor roller 46 driven by a motor 45.
  • the ink applied to the plate cylinder 7 is applied to the printing sheets with the interposition of a transfer cylinder 10.
  • the inking unit 8 consists of a larger number of rollers, not all of which are shown. These will driven by the plate cylinder 7 via a pair of bevel gears 11, 12, a shaft 13 and a further pair of bevel gears 14, 15, the drive being supplied to the ink drum 16. From there, the individual rollers, in particular the distributor roller 17, 18, are driven by spur gear wheels.
  • the application rollers 40, 41, 42, 43, however, are not positive, but driven by circumferential friction.
  • the drive shaft 13 is assigned a clutch 21 which can be actuated by a magnet 22.
  • the magnet 22 is triggered by a limit switch 23 by actuating a switch protection 24.
  • the rubber cylinder 10 is mounted in a known manner in an eccentrically drilled bearing bush 25, of which only one coupling member 26 is shown, rotated so that the rubber cylinder can be adjusted in its position relative to the plate cylinder.
  • the above-mentioned limit switch 23 then comes into contact with a shoulder 27 provided on the socket 25 and thus switches the clutch 21 when the rubber cylinder 10 is turned off from the plate cylinder 7. (Shown in Fig. 2 shown position).
  • the drive for the inking unit 8 is thus interrupted and the ink layer thicknesses present at the time of printing shutdown on the individual rollers of the inking unit remain, ie there is no increase in the layer thickness on the application rollers, so that when the pressure is resumed, a correctly metered ink supply is immediately provided is present.
  • a qualitatively satisfactory print is only possible, however, if the printing plate can be dampened in the same way in a well-dosed manner at the start of printing. This is achieved in that when the pressure is interrupted, the dampening rollers 30 remain on the plate cylinder 7.
  • An over-moistening of the pressure plate is prevented by activating a solenoid valve 31, by means of which the air supply for an air doctor blade 32 is opened, when the pressure is switched off, ie also when and by actuating the limit switch 23.
  • the air knife 32 consists of an apertured tube extending along the roller 33.
  • the size of the openings can be changed by means of a rotary slide handle 35. This is done by hand by arranging appropriate remote-controlled actuators, but remote control is also possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Impact Printers (AREA)
  • Soil Working Implements (AREA)
  • Rotary Presses (AREA)
EP81100158A 1980-02-01 1981-01-12 Machine à imprimer offset Expired EP0033440B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100158T ATE8354T1 (de) 1980-02-01 1981-01-12 Offsetdruckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803003642 DE3003642A1 (de) 1980-02-01 1980-02-01 Offsetdruckmaschine
DE3003642 1980-02-01

Publications (3)

Publication Number Publication Date
EP0033440A2 true EP0033440A2 (fr) 1981-08-12
EP0033440A3 EP0033440A3 (en) 1982-08-04
EP0033440B1 EP0033440B1 (fr) 1984-07-11

Family

ID=6093478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100158A Expired EP0033440B1 (fr) 1980-02-01 1981-01-12 Machine à imprimer offset

Country Status (3)

Country Link
EP (1) EP0033440B1 (fr)
AT (1) ATE8354T1 (fr)
DE (2) DE3003642A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU625335B2 (en) * 1989-03-09 1992-07-09 Heidelberger Druckmaschinen Aktiengesellschaft Procedure to regulate moisture on an offset printing machine
EP1149695A1 (fr) * 2000-04-26 2001-10-31 MAN Roland Druckmaschinen AG Dispositif de mouillage pour une machine à imprimer offset

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005031317B4 (de) * 2005-07-05 2017-05-24 manroland sheetfed GmbH Verfahren zur Aufrechterhaltung einer Farbverteilung im Farbwerk von Druckmaschinen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2002815A (en) * 1932-11-19 1935-05-28 Harris Seybold Potter Co Dampening mechanism for printing-presses
US2604848A (en) * 1948-04-03 1952-07-29 Dick Co Ab Dampening apparatus and method for lithographic printing
DE2412194B1 (fr) * 1974-03-14 1975-09-18 Grapho Metronic Gmbh & Co, 8000 Muenchen
DE2456985A1 (de) * 1974-12-03 1976-06-16 Grapho Metronic Gmbh & Co Rotationsoffsetdruckmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2002815A (en) * 1932-11-19 1935-05-28 Harris Seybold Potter Co Dampening mechanism for printing-presses
US2604848A (en) * 1948-04-03 1952-07-29 Dick Co Ab Dampening apparatus and method for lithographic printing
DE2412194B1 (fr) * 1974-03-14 1975-09-18 Grapho Metronic Gmbh & Co, 8000 Muenchen
DE2456985A1 (de) * 1974-12-03 1976-06-16 Grapho Metronic Gmbh & Co Rotationsoffsetdruckmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU625335B2 (en) * 1989-03-09 1992-07-09 Heidelberger Druckmaschinen Aktiengesellschaft Procedure to regulate moisture on an offset printing machine
EP1149695A1 (fr) * 2000-04-26 2001-10-31 MAN Roland Druckmaschinen AG Dispositif de mouillage pour une machine à imprimer offset

Also Published As

Publication number Publication date
EP0033440B1 (fr) 1984-07-11
ATE8354T1 (de) 1984-07-15
DE3003642A1 (de) 1981-08-06
DE3164623D1 (en) 1984-08-16
EP0033440A3 (en) 1982-08-04

Similar Documents

Publication Publication Date Title
EP0010237B1 (fr) Dispositif combiné de mouillage et d'encrage pour une machine à imprimer offset et procédé pour encrer et mouiller un cliché d'impression offset
EP0586881B1 (fr) Machine à imprimer rotative pour bandes en particulier des bandes en papier épaisses
DE19739283C2 (de) Verfahren zum Erreichen des Fortdruckzustandes in einer Rollenrotationsdruckmaschine
DE2916047C2 (de) Farb- und Feuchtwerk für lithographische Druckplatten
DE3614027A1 (de) Stellvorrichtung fuer fuenfzylinder-druckwerke von offset-rotationsdruckmaschinen
DE2531886C3 (de) Verfahren und Vorrichtung zur Reinigung von Zylindern eines Offsetdruckwerkes
DE10244044A1 (de) Verfahren zum Betrieb eines Farbwerkes oder Feuchtwerkes in einer Druckmaschine
DE3108808C2 (de) Bogen-Rotations-Flachdruckmaschine
DE19921628B4 (de) Verfahren zum Dosieren von Feuchtmittel beim Drucken mit einer Druckform für Offsetdruck
EP1864801B1 (fr) Imprimé d'une presse
DE1940661A1 (de) Feuchteinrichtung fuer lithographische Druckmaschinen
EP0033440B1 (fr) Machine à imprimer offset
EP0210671B1 (fr) Dispositif de mouillage pour machine à imprimer
EP0223972A2 (fr) Dispositif d'encrage pour machines d'impression offset ou d'impression typographique
DE3429079C2 (fr)
EP1946924A2 (fr) Mécanisme d'encrage ou de mouillage doté de deux cylindres réagissant ensemble en position d'impression
DE2221423B2 (de) Feuchtwerk einer Offsetdruckmaschine
DE3035833A1 (de) Offsetdruckmaschine
DE10329427B4 (de) Verfahren zum Betrieb eines Farbwerks
DE102017204515B4 (de) Verfahren zum Betreiben einer bogenverarbeitenden Maschine
DE877903C (de) Steuer- und Schaltvorrichtung fuer Druckmaschinen, insbesondere Zweitourenmaschinen,mit doppelter Einfaerbung der Druckform
DE102023107271A1 (de) Verfahren zum Betreiben einer Druckmaschine und Druckmaschine
EP1215046A1 (fr) Machine à imprimer avec un dispositif de nettoyage du cliché
DE2456985C3 (de) Rotationsoffsetdruckmaschine
DE102008001542B4 (de) Walzenreinigungsvorrichtung einer Offsetdruckmaschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19820624

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 8354

Country of ref document: AT

Date of ref document: 19840715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3164623

Country of ref document: DE

Date of ref document: 19840816

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19880930

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19930127

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19930128

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19930131

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19930216

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19940112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19940113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940131

Ref country code: CH

Effective date: 19940131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940801

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19941215

Year of fee payment: 15

Ref country code: DE

Payment date: 19941215

Year of fee payment: 15

EUG Se: european patent has lapsed

Ref document number: 81100158.5

Effective date: 19940810

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960112

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19961001