EP0730527B1 - Dispositif d'alimentation du mecanisme d'encrage d'imprimantes en encre d'impression - Google Patents

Dispositif d'alimentation du mecanisme d'encrage d'imprimantes en encre d'impression Download PDF

Info

Publication number
EP0730527B1
EP0730527B1 EP95901332A EP95901332A EP0730527B1 EP 0730527 B1 EP0730527 B1 EP 0730527B1 EP 95901332 A EP95901332 A EP 95901332A EP 95901332 A EP95901332 A EP 95901332A EP 0730527 B1 EP0730527 B1 EP 0730527B1
Authority
EP
European Patent Office
Prior art keywords
ink
duct
space
reservoir space
delimiting element
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 - Lifetime
Application number
EP95901332A
Other languages
German (de)
English (en)
Other versions
EP0730527A1 (fr
Inventor
Robert A. Wagner
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6503261&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0730527(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP0730527A1 publication Critical patent/EP0730527A1/fr
Application granted granted Critical
Publication of EP0730527B1 publication Critical patent/EP0730527B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/08—Ducts, containers, supply or metering devices with ink ejecting means, e.g. pumps, nozzles

Definitions

  • the present invention relates to the feeding of the printing ink into the inking unit of a printing press, in particular to the application of the ink layer to the duct roller at the beginning of the inking unit.
  • an ink fountain is provided for this purpose, which is filled with a supply quantity of printing ink when preparing the machine for printing. Since the exact amount consumed is not known, a larger amount of paint is usually filled in than required.
  • the level of the printing ink and thus the static pressure on the front edge of the ink fountain base decreases, where a plurality of ink metering elements, for example sliding sliders or adjustable ink knives, are provided, which determine the ink feed gap and thus the layer thickness of the ink taken from the ductor surface to the squeegee roller .
  • the ductor speed and the use of the siphon roller that removes the ink from the ductor are also controlled accordingly.
  • a further disadvantage is the fact that after the completion of a print job, usually larger amounts of ink remain in the usual ink fountains, the further storage or disposal of which is difficult.
  • the ink supply can be kept low and the ink delivery along the ductor can be controlled according to the desired distribution.
  • a disruptive skin can also form on the open surface of the ink supply.
  • a limiting element for the ink supply is known from US Pat. No. 3,457,858, where a wedge-shaped body is pushed from behind onto the inclined floor of the ink fountain and encloses the ink supply between itself and the ductor under the effect of the weight.
  • this delimitation body can only be moved manually and can be pushed away by a pressure building up in the ink supply, so that here too no defined application of paint and complete consumption of the ink supply is ensured.
  • the object of the present invention is to provide a device for supplying printing ink into the inking unit of a printing press, which allows uniformly optimal conditions for the ink delivery to the ductor surface to be achieved in front of the ink metering elements, with a minimal amount of remaining ink supply at the end of a print job .
  • the problem is solved by the features specified in the claims.
  • the design according to the invention makes it possible to create a small, yet uniformly filled and pressurized ink supply space, so that the most favorable conditions for ink transfer to the duct surface in front of the ink metering elements can be set. As a result, these also meet constant operating conditions and the desired color distribution along the duct can be achieved more reliably.
  • the controllability of the print in the ink supply opens up another possibility for the optimal design of the color transfer.
  • a conventional ink fountain 2 is assigned to a duct roller 1, the inclined bottom 3 of which has slides 4 on the front edge as ink metering elements. These are in a known manner, as indicated by the double-headed arrow, controllable and are used for zone-by-zone adjustment of the layer thickness of the paint applied to the ductor surface.
  • a limiting element 5 is clamped on the ink fountain base 3 by means of a clamping device 6. It extends in the transverse direction over the entire dimension of the ink fountain and its front edge has a section 7 which runs approximately tangentially to the duct surface and which maintains a certain gap distance 8 from the duct surface.
  • the gap distance 8 is determined, for example, with sensors before the limiting element 5 is tightened.
  • the front end face 9 of the delimiting element 5 is designed such that it forms a bounded and practically closed ink supply space 10 together with the front edge of the ink fountain base 3 and the ink metering slides 4 and the adjacent surface of the duct 1.
  • a paint supply channel 11 opens into this, which is implemented in the limiting element 5 in the middle of its extension and to which a hose 14 for supplying paint under metered pressure is connected.
  • the ink supply channel 11 is formed from a section 12 extending at right angles to the surface of the delimiting element 5 in the form of a bore and a recess 13 in the lower surface of the delimiting element 5, which widens towards the front and forms a widening gap nozzle together with the ink box base 3. It is understood that several such ink supply points can be provided distributed in the transverse direction if necessary.
  • the hose 6 is connected to a suitable ink conveying device, which allows the ink in the ink reservoir 10 to be kept at a desired optimal value, which in turn depends on a number of parameters, in particular the viscosity of the Color, the speed of the ductor, the total size of the exit gap released by the slides 4.
  • the supply pressure of the paint through the channel 11 will be in equilibrium with the pressure building up in the gap distance 8, in which the returned emulsified paint is subject to a shear flow and takes on a value which is dependent on a large number of factors, in particular one which is dependent on the color toughness Component and a dynamic dynamic pressure component exists.
  • a suitable ejection device for the ink can be a push-out device for tubular containers or a plunger delivery device that can be attached to disposable cartridges or return cartridges.
  • the packaging of the paint itself is included in the conveyor and the containers can be almost completely emptied and then disposed of without any problems.
  • a special pumping device of a tank or barrel conveyor system can be used to supply the ink with pressure.
  • the operation of the device described proceeds in such a way that the ink supply space 10 is filled while the ductor 1 is rotating, and in the ongoing printing operation the pressure in the ink supply space is then kept at the optimum value, namely in the equilibrium described above, by supplying color.
  • the end face 9 and possibly narrow adjacent strips of the tangential section 7 and the lower surface of the delimiting element 5 can be taped off with an adhesive strip, which can be removed after the print job has ended, so that the limiting element itself no longer requires cleaning.
  • FIG. 2 shows a second embodiment which requires certain design changes.
  • ink fountain base 3 with ink metering slides 4 on the front edge.
  • the delimiting element 5 is here in the form of a wall and is pivotably articulated on the ink fountain base 3 by means of a joint 16 and acted upon by an adjusting device 17, which allows the gap distance 8 between the delimiting element 5 and the surface of the duct 1 to be set.
  • the paint is supplied through the hose 14 and a paint supply opening 19 in the limiting element 5.
  • the gap distance 8 can also be regulated during the printing operation.
  • the ink supply space 10 is formed essentially in the front edge of the delimiting element 5 by a recess which runs over the entire transverse extent and is closed at the ends by side walls in which ink supply openings 19 are provided, on which tubes 14 are connected. In this way, the ink is supplied from both sides.
  • the fourth embodiment according to FIG. 4 basically corresponds to the first embodiment insofar as here also on an ink fountain base 3 arranged on its front edge Color metering slides 4 a limiting element 5 can be fixed by means of a clamping device 6.
  • the element 5 delimiting the ink supply space 10 here consists of two parts, namely a lower sliding plate 21 which is seated directly on the ink fountain base 3 and an upper plate 22 seated thereon, on which the clamping device 6 engages and the front edge of which is set to the gap distance 8.
  • the sliding plate 21 is connected to a sliding drive 24. Its front edge is designed in accordance with the direction and curvature of the duct surface.
  • the ink supply space 10 is formed between the front edge, the released lower surface of the top plate 22, the duct surface and the front edge of the ink fountain base 3 with the ink metering slides 4.
  • the ink supply through the feed channel 11 is stopped and the remaining quantity still present in the ink supply space 10 is displaced by advancing the sliding plate 21. As a result, this residual amount is also consumed and at the same time the feed channel 11 is closed by the surface of the sliding plate 21.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

Afin d'améliorer le maniement de l'encre d'impression dans des imprimantes, l'encre est fournie au cylindre encreur (1) du mécanisme d'encrage à travers un espace (10) délimité de tous les côtés et qui fait office de réservoir d'encre. Des éléments connus de dosage de l'encre, par exemple des dispositifs de mesure (4), sont situés à la sortie de l'espace (10). Le bord antérieur de l'élément de délimitation (5) qui détermine les dimensions de l'espace (10) forme une fente ajustable (8) avec la surface du cylindre encreur et l'encre est introduite sous pression dans l'espace (10). L'approvisionnement en encre du cylindre encreur (1) n'est pas ainsi laissé uniquement à la dynamique propre de l'encre et à sa pression hydrostatique, ainsi qu'à la position des dispositifs de mesure (4), mais peut en outre être influencé par une pression réglable d'alimentation en encre. L'encre est directement introduite sous pression dans l'espace (10), en amont des éléments (4) de dosage de l'encre, par un système approprié de pompage ou de distribution et sous la pression la plus favorable suivant les conditions de fonctionnement.

Claims (6)

  1. Dispositif d'alimentation en encre d'impression du mécanisme d'encrage d'une imprimante comportant un rouleau encreur (1), plusieurs éléments (4) de dosage d'encre qui sont disposés les uns à la suite des autres au fond d'un encrier (2), le long du cylindre encreur, et forment une fente réglable de distribution d'encre ainsi qu'un élément limiteur (5) qui définit une réserve (10) d'encre à l'intérieur de l'encrier (2), caractérisé par le fait que l'élément limiteur (5) définit une réserve (10) d'encre fermée de faible section qui s'étend le long du rouleau encreur et peut être réglé à une distance (8) définie par rapport à la surface du rouleau encreur, pour le retour de l'encre, et par le fait qu'il est prévu au moins un canal (11) d'alimentation en encre par lequel l'encre d'impression est introduite sous une pression dosée dans la réserve d'encre (10).
  2. Dispositif selon la revendication 1, caractérisé par un encrier (2) sur le fond (3) duquel est fixé l'élément limiteur (5), le canal (11) d'alimentation en encre qui débouche dans la réserve (10) d'encre s'étendant à travers l'élément limiteur (5).
  3. Dispositif selon la revendication 1, caractérisé par le fait que l'élément limiteur (5) est agencé sous forme de paroi pivotante, est articulé sur l'encrier (3) et que sa distance (8) par rapport au rouleau encreur (1) peut être réglée à l'aide d'un dispositif de réglage (17) (figure 2).
  4. Dispositif selon la revendication 1, caractérisé par le fait que la réserve (10) d'encre est formée par une gorge à l'extrémité antérieure de l'élément limiteur (5) et que l'alimentation en encre a lieu par deux orifices (19) d'alimentation en encre prévus dans les parois d'extrémité de la réserve d'encre (10).
  5. Dispositif selon les revendications 1 et/ou 2, caractérisé par le fait que l'élément limiteur (5) est formé d'une plaque coulissante (21) inférieure entraînée, appliquée sur le fond de l'encrier, et d'une plaque supérieure (22) dont le bord antérieur forme la fente (8) avec le rouleau encreur (1), le bord antérieur de la plaque coulissante (21) étant incliné et incurvé en accord avec le contour de la surface du rouleau encreur à ce niveau.
  6. Dispositif selon la revendication 5, caractérisé par le fait que le canal (11) d'alimentation en encre est aménagé dans la plaque supérieure (22) et que son embouchure dans la réserve (10) d'encre est couverte par la plaque coulissante (21), lorsque celle-ci est avancée.
EP95901332A 1993-11-24 1994-11-23 Dispositif d'alimentation du mecanisme d'encrage d'imprimantes en encre d'impression Expired - Lifetime EP0730527B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4339939A DE4339939C2 (de) 1993-11-24 1993-11-24 Vorrichtung zur Zufuhr von Druckfarbe in ein Farbwerk einer Offsetdruckmaschine
DE4339939 1993-11-24
PCT/DE1994/001402 WO1995014574A1 (fr) 1993-11-24 1994-11-23 Dispositif d'alimentation du mecanisme d'encrage d'imprimantes en encre d'impression

Publications (2)

Publication Number Publication Date
EP0730527A1 EP0730527A1 (fr) 1996-09-11
EP0730527B1 true EP0730527B1 (fr) 1997-08-13

Family

ID=6503261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95901332A Expired - Lifetime EP0730527B1 (fr) 1993-11-24 1994-11-23 Dispositif d'alimentation du mecanisme d'encrage d'imprimantes en encre d'impression

Country Status (3)

Country Link
EP (1) EP0730527B1 (fr)
DE (2) DE4339939C2 (fr)
WO (1) WO1995014574A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19623348B4 (de) * 1996-06-12 2007-03-01 Baldwin Germany Gmbh Flüssigkeits-Übertragungsvorrichtung der graphischen Industrie
DE19623349A1 (de) * 1996-06-12 1997-12-18 Baldwin Gegenheimer Gmbh Temperierte Flüssigkeits-Übertragungsvorrichtung der graphischen Industrie
DE19826818A1 (de) * 1998-06-16 1999-12-23 Koenig & Bauer Ag Farbkasten mit automatischer Farbversorgung
DE19826817A1 (de) * 1998-06-16 1999-12-23 Koenig & Bauer Ag Keilfarbkasten
DE19826810A1 (de) * 1998-06-16 1999-12-23 Koenig & Bauer Ag Verfahren und Einrichtung zur Farbzufuhr
DE10028477A1 (de) * 2000-06-08 2001-12-13 Roland Man Druckmasch Vorrichtung zum Dosieren und zur Vergleichmäßigung einer Farbschicht auf der Oberfläche einer Druckmaschinenwalze

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2056210A (en) * 1932-07-19 1936-10-06 Addressograph Multigraph Means for feeding emulsoid inks
US2821919A (en) * 1951-04-06 1958-02-04 Hoe & Co R Inking mechanisms
US3339485A (en) * 1964-06-15 1967-09-05 Bonnierfoeretagen Ab Adjustable ink supply device in rotary printing presses
US3457858A (en) * 1967-08-29 1969-07-29 Lester R Gibbs Weighted press fountain back structure
DE1611285A1 (de) * 1967-08-30 1970-12-10 Schaefer Etiketten Heinrich Hu Vorrichtung zum Verteilen der Farbe und Einfaerben der Druckwalze,insbesondere einer Etikettier- und Druckmaschine
DE1944832A1 (de) * 1969-09-04 1971-03-11 Muecher Hermann Elastischer Dichtungsring fuer Rohrverbindungsstellen
GB1585452A (en) * 1977-04-18 1981-03-04 Harris Corp Inking mechanism
DE2929891A1 (de) * 1979-07-24 1981-02-12 Roland Man Druckmasch Farbkasten fuer eine rotationsdruckmaschine
SE420064B (sv) * 1980-03-11 1981-09-14 Wifag Maschf Insatsferglada
DE3030774C2 (de) * 1980-08-14 1982-11-18 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Dosieren der Farbmenge in Farbkästen von Druckmaschinen
EP0047618B1 (fr) * 1980-09-03 1984-08-22 Crosfield Electronics Limited Un imprimeur en héliogravure
DE4208295A1 (de) * 1992-03-16 1993-09-23 Roland Man Druckmasch Einfaerbevorrichtung fuer eine rasterwalze

Also Published As

Publication number Publication date
WO1995014574A1 (fr) 1995-06-01
DE4339939A1 (de) 1995-06-08
DE4339939C2 (de) 1995-10-12
DE59403752D1 (de) 1997-09-18
EP0730527A1 (fr) 1996-09-11

Similar Documents

Publication Publication Date Title
EP0141168B1 (fr) Réglage initial pour dispositifs d'encrage
DE3823340C2 (de) Kammerrakel für Rotations-Druckmaschinen
DE2300289C2 (de) Vorrichtung zum Auftragen flüssiger oder pastöser Farbe für Siebdruckmaschinen
DE2526466A1 (de) Farbauftragsvorrichtung fuer eine tiefdruckmaschine
DD140226A5 (de) Verfahren zum uebertragen von fliessfaehigen auftragsmedien und vorrichtung zur durchfuehrung des verfahrens
DE4012825C2 (fr)
DE19859436B4 (de) Digitale Farbdosierung
DE69912692T2 (de) Farb- und Reinigungsvorrichtungen in einer Rotationsdruckmaschine
DE2739556A1 (de) Einrichtung zur kontinuierlichen reinigung eines wischzylinders bei einer stahlstichdruckmaschine
EP0730527B1 (fr) Dispositif d'alimentation du mecanisme d'encrage d'imprimantes en encre d'impression
DE3329331A1 (de) Druckwerk mit kurzem farbwerk
EP0108887B1 (fr) Installation d'enduction
EP0570727A1 (fr) Dispositif de lavage pour machines à imprimer
DD229648A5 (de) Farb- oder auftragwerk fuer offset-rotations-druckmaschinen
EP0570763B1 (fr) Dispositif de lavage pour machine à imprimer
DE3714160A1 (de) Farbwerk fuer eine druckmaschine
DE10056247A1 (de) Verfahren zum Steuern der Farbmenge in einer Druckmaschine
DE9320447U1 (de) Vorrichtung zur Zufuhr von Druckfarbe in das Farbwerk einer Druckmaschine
EP1127688B1 (fr) Procédé et dispositif pour alimenter en encre l'encrier des machines d'impression
EP1060886B1 (fr) Procédé et dispositif pour alimenter en encre l'encrier des machines d'impression
DE10009663A1 (de) Verfahren und Einrichtung zum Zuführen von Druckfarbe in Farbkästen von Druckmaschinen
DE69723742T3 (de) Farbrakel
EP4182170B1 (fr) Systèmes d'alimentation en encre et procédés pour alimenter en encre d'impression une unité d'encrage d'un groupe d'impression en creux, et groupe d'impression en creux et procédé de fonctionnement d'un système d'alimentation en encre
DE4326593C2 (de) Druckfarbenzuführungseinrichtung
DE288304C (fr)

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

17P Request for examination filed

Effective date: 19960618

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB LI

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19961030

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970814

REF Corresponds to:

Ref document number: 59403752

Country of ref document: DE

Date of ref document: 19970918

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: PATENTANWAELTE GEORG ROEMPLER UND ALDO ROEMPLER

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: KBA-PLANETA AG

Effective date: 19980508

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBO Opposition rejected

Free format text: ORIGINAL CODE: EPIDOS REJO

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19990628

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20021115

Year of fee payment: 9

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

Ref country code: FR

Payment date: 20021120

Year of fee payment: 9

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

Ref country code: CH

Payment date: 20030228

Year of fee payment: 9

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

Ref country code: GB

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

Effective date: 20031123

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

Ref country code: LI

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

Effective date: 20031130

Ref country code: CH

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

Effective date: 20031130

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

Effective date: 20031123

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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: 20040730

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: DE

Payment date: 20060324

Year of fee payment: 12

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

Ref country code: DE

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

Effective date: 20070601