EP0132626A2 - Damping device for the printing plate of a rotary printing machine - Google Patents

Damping device for the printing plate of a rotary printing machine Download PDF

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Publication number
EP0132626A2
EP0132626A2 EP84107606A EP84107606A EP0132626A2 EP 0132626 A2 EP0132626 A2 EP 0132626A2 EP 84107606 A EP84107606 A EP 84107606A EP 84107606 A EP84107606 A EP 84107606A EP 0132626 A2 EP0132626 A2 EP 0132626A2
Authority
EP
European Patent Office
Prior art keywords
roller
dampening
dampening solution
metering roller
brush
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
EP84107606A
Other languages
German (de)
French (fr)
Other versions
EP0132626A3 (en
EP0132626B1 (en
Inventor
Dimitrios Pyliotis
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Priority to AT84107606T priority Critical patent/ATE38490T1/en
Publication of EP0132626A2 publication Critical patent/EP0132626A2/en
Publication of EP0132626A3 publication Critical patent/EP0132626A3/en
Application granted granted Critical
Publication of EP0132626B1 publication Critical patent/EP0132626B1/en
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
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/28—Damping devices using brushes
    • 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
    • B41F7/26—Damping devices using transfer rollers

Definitions

  • the invention relates to a device for moistening the printing plate on rotary printing presses according to the preamble of claim 1.
  • dampening systems are known per se and serve to wet the printing plate with a uniformly thin dampening solution layer before the ink is applied.
  • the aim here is to apply the dampening solution layer as thinly as possible, so as not to change the substrate and still obtain a perfect print image.
  • the scope available for this is very small, so that high demands are placed on modern dampening systems.
  • the object of the invention is to design a device of the type mentioned in the introduction in such a way that even with very small amounts of dampening solution, sensitive metering is achieved in certain areas of the printing plate, without any great technical effort.
  • the object is achieved according to the characterizing features of claim 1.
  • the advantage of this solution is that by contacting the bristles of the brush roller, very small amounts of dampening solution are removed from the metering roller and evaporate as the brush roller rotates further. This effect is achieved by the multiplication of the surface of the removed dampening solution film and the higher drying speed achieved thereby. With a dampening solution film of about 5-10 micrometers thick on the metering roller, the one removed by the brush roller is sufficient Amount of dampening solution normally to reduce the excess supply of dampening solution in the respective zone.
  • FIG. 1 An embodiment of the invention is shown schematically in the drawing.
  • a printing plate is clamped on the plate cylinder 1 and is essentially moistened by application rollers 2, 3. Both application rollers are in contact via an intermediate roller 4.
  • the three rollers 2-4 rotate at the peripheral speed of the plate cylinder.
  • the metering roller 5 has a hard, water-friendly surface and rolls off with the wet box roller 6, which has an elastic surface.
  • the dampening box roller 6 rotates partially in the dampening solution 7, which is provided in a dampening solution box 8.
  • the dampening solution entrained by the dampening roller 6 is metered between the latter and the metering roller 5 by the setting pressure to such an extent that only a dampening agent film of about 5-10 micrometers is present on the metering roller 5.
  • the metering roller 5 is assigned a brush roller 9 which e.g. rolls with the peripheral speed of the metering roller 5.
  • the bristles 10 absorb small amounts of dampening solution from the metering roller 5 and allow them to evaporate briefly due to their enlarged surface.
  • the brush roller 9 can only take up a partial length of the metering roller 5 and is mounted on levers 11 which are fastened on a crossbar 12.
  • the levers 11 are arranged on a clamping body 18 and fastened both pivotably and laterally.
  • adjustable wipers 13 can be provided in certain areas, which cause the dampening solution to be sprayed off.
  • the sprayed dampening solution is supplied to the dampening solution supply 7 by means of orifices 14, 15, which are fastened to a clamping body 18 which can be displaced with the levers 11, via the dampening box roller 6.
  • suction nozzles 16 can be used, which suck off the excess dampening solution or cause the evaporation to evaporate.
  • the suction nozzles 16 are connected via a hose line 17 to a suction unit, not shown. The suction effect can be set differently for the individual suction nozzles.

Abstract

A device for dampening a printing plate of a rotary printing machine having in successive engagement a dampening-pan roller, a metering roller and dampening-medium applicator rollers for forming a very thin uniform dampening-medium film including at least one brush roller cooperatively engaging and rolling on the metering roller, the brush-roller having absorptive brushes on the periphery thereof engageable with the surface of the metering roller for removing at least part of the dampening medium located in excessive quantities at any surface region of the metering roller.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Befeuchten der Druckplatte an Rotationsdruckmaschinen gemäß dem Oberbegriff des Anspruchs l.The invention relates to a device for moistening the printing plate on rotary printing presses according to the preamble of claim 1.

Derartige sogenannte Feuchtwerke sind ansich bekannt und dienen dazu, die Druckplatte vor dem Farbauftrag mit einer gleichmäßig dünnen Feuchtmittelschicht zu benetzen. Hierbei ist man bestrebt, die Feuchtmittelschicht so dünn wie möglich aufzutragen, um keine Veränderung des Bedruckstoffes zu bewirken und trotzdem ein einwandfreies Druckbild zu erhalten. Der hierfür zur Verfügung stehende Spielraum ist sehr gering, so daß an moderne Feuchtwerke hohe Anforderungen gestellt werden.Such so-called dampening systems are known per se and serve to wet the printing plate with a uniformly thin dampening solution layer before the ink is applied. The aim here is to apply the dampening solution layer as thinly as possible, so as not to change the substrate and still obtain a perfect print image. The scope available for this is very small, so that high demands are placed on modern dampening systems.

Obwohl es mit modernen Feuchtwerken möglich ist, einen gleichmäßigen und sehr dünnen Feuchtmittelfilm über die Länge des Plattenzylinders aufzubringen, kommt es bei bestimmten Druckarbelten bereichsweise zu einem Überangebot an Feuchtmittel. Dies ist z.B. der Fall, wenn, bedingt durch das Druckbild, in einem Bereich weniger Feuchtmittel benötigt wird, als über die sonstige Plattenlänge. Nachdem dies für den Fachmann im Druckbild sichtbar ist, besteht das Problem, das zugeführte Feuchtmittel in dem Bereich etwas zu reduzieren.Although it is possible with modern dampening systems to apply an even and very thin dampening solution film over the length of the plate cylinder, there is an excess supply of dampening solution in certain printing inks. This is e.g. the case when, due to the printed image, less dampening solution is required in one area than over the other plate length. Since this is visible to the person skilled in the art in the printed image, there is the problem of reducing the amount of dampening solution supplied in the area somewhat.

Die Aufgabe der Erfindung ist es, eine Vorrichtung der eingangs genannten Art so auszubilden, daß auch bei sehr geringen Feuchtmittelmengen eine feinfühlige Dosierung in bestimmten Bereichen der Druckplatte erreicht wird, ohne einen größeren technischen Aufwand.The object of the invention is to design a device of the type mentioned in the introduction in such a way that even with very small amounts of dampening solution, sensitive metering is achieved in certain areas of the printing plate, without any great technical effort.

Die Aufgabe wird gemäß den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Der Vorteil dieser Lösung ist, daß durch das Kontaktieren der Borsten der Bürstenwalze sehr kleine Feuchtmittelmengen von der Dosierwalze abgenommen werden, die sich bei der weiteren Drehung der Bürstenwalze verflüchtigen. Diese Wirkung wird durch die Vervielfachung der Oberfläche des abgenommenen Feuchtmittelfilms und die damit erzielte höhere Trockengeschwindigkeit erreicht. Bei einem Feuchtmittelfilm von etwa 5-10 Mikrometer Dicke auf der Dosierwalze reicht die durch die Bürstenwalze abgenommene Feuchtmittelmenge im Normalfall aus, um das Überangebot an Feuchtmittel in der jeweiligen Zone abzubauen.The object is achieved according to the characterizing features of claim 1. The advantage of this solution is that by contacting the bristles of the brush roller, very small amounts of dampening solution are removed from the metering roller and evaporate as the brush roller rotates further. This effect is achieved by the multiplication of the surface of the removed dampening solution film and the higher drying speed achieved thereby. With a dampening solution film of about 5-10 micrometers thick on the metering roller, the one removed by the brush roller is sufficient Amount of dampening solution normally to reduce the excess supply of dampening solution in the respective zone.

Mit den Unteransprüchen werden vorteilhafte Ausgestaltungen der Erfindung erreicht, wobei durch die Verwendung von kurzen Bürstenwalzen gemäß Anspruch 2 eine gezielte Reduzierung des Feuchtmittelfilms möglich ist. Wird jedoch die Bürstenwalze mit einer Länge ausgeführt, die der Dosierwalze entspricht und an diese angestellt, so muß die Feuchtmittelzufuhr geringfügig erhöht werden, um das natürliche Verdunsten des Feuchtmittels auszugleichen. Hier kann dann durch entsprechende Anordnung der Abstreifer ebenfalls in bestimmten Bereichen die Feuchtmittelmenge reduziert werden. Bei Verwendung von Saugdüsen gemäß Anspruch 4 genügt die durch die Düsen erzeugte intensivere Trocknung der Borsten bereits für die Reduzierung des Feuchtmittels.Advantageous refinements of the invention are achieved with the subclaims, wherein a targeted reduction of the dampening solution film is possible through the use of short brush rollers. However, if the brush roller is designed with a length that corresponds to the metering roller and is placed against it, the dampening solution supply must be increased slightly to compensate for the natural evaporation of the dampening solution. Here, the amount of dampening solution can also be reduced in certain areas by arranging the wipers accordingly. When using suction nozzles according to claim 4, the more intensive drying of the bristles generated by the nozzles is sufficient for the reduction of the dampening solution.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt.
In bekannter Weise ist auf dem Plattenzylinder 1 eine Druckplatte aufgespannt, die im Wesentlichen durch Auftragwalzen 2,3 eingefeuchtet wird. Beide Auftragwalzen stehen über eine Zwischenwalze 4 in Kontakt. Hierbei drehen sich die genannten drei Walzen 2-4 mit der Umfangsgeschwindigkeit des Plattenzylinders.An embodiment of the invention is shown schematically in the drawing.
In a known manner, a printing plate is clamped on the plate cylinder 1 and is essentially moistened by application rollers 2, 3. Both application rollers are in contact via an intermediate roller 4. Here, the three rollers 2-4 rotate at the peripheral speed of the plate cylinder.

Mit der Auftragwalze 3 steht eine Dosierwalze 5 in Kontakt, die mit geringerer Geschwindigkeit angetrieben wird. Die Dosierwalze 5 besitzt eine harte, wasserfreundliche Oberfläche und rollt mit der Feuchtkastenwalze 6 ab, die eine elastische Oberfläche aufweist. Die Feuchtkastenwalze 6 dreht sich teilweise im Feuchtmittel 7, das in einem Feuchtmittelkasten 8 vorgesehen ist. Das von der Feuchtkastenwalze 6 mitgenommene Feuchtmittel wird zwischen dieser und der Dosierwalze 5 durch den Anstelldruck soweit dosiert, daß nur ein Feuchtmittelfilm von etwa 5-10 Mikrometer auf der Dosierwalze 5 vorhanden ist. Durch Veränderung der Umfangsgeschwindigkeit der Dosierwalze 5 kann sodann mehr oder weniger Feuchtmittel an die Auftragwalze 3 übergeben werden, wobei dies geschwindigkeitsabhängig erfolgt.A metering roller 5, which is driven at a lower speed, is in contact with the application roller 3. The metering roller 5 has a hard, water-friendly surface and rolls off with the wet box roller 6, which has an elastic surface. The dampening box roller 6 rotates partially in the dampening solution 7, which is provided in a dampening solution box 8. The dampening solution entrained by the dampening roller 6 is metered between the latter and the metering roller 5 by the setting pressure to such an extent that only a dampening agent film of about 5-10 micrometers is present on the metering roller 5. By changing the peripheral speed of the metering roller 5, more or less dampening solution can then be transferred to the application roller 3, this taking place depending on the speed.

Der Dosierwalze 5 ist eine Bürstenwalze 9 zugeordnet, die z.B. mit der Umfangsgeschwindigkeit der Dosierwalze 5 abrollt. Hierbei nehmen die Borsten 10 geringe Feuchtmittelmengen von der Dosierwalze 5 auf und lassen diese durch ihre vergrößerte Oberfläche kurzzeitig verdunsten. Die Bürstenwalze 9 kann im gezeigten Ausführungsbeispiel nur eine Teillänge der Dosierwalze 5 einnehmen und ist auf Hebeln 11 gelagert, die auf einer Traverse 12 befestigt sind. Die Hebel 11 sind an einem Klemmkörper 18 angeordnet und sowohl schwenkbar als auch seitlich verschiebbar befestigt.The metering roller 5 is assigned a brush roller 9 which e.g. rolls with the peripheral speed of the metering roller 5. Here, the bristles 10 absorb small amounts of dampening solution from the metering roller 5 and allow them to evaporate briefly due to their enlarged surface. In the exemplary embodiment shown, the brush roller 9 can only take up a partial length of the metering roller 5 and is mounted on levers 11 which are fastened on a crossbar 12. The levers 11 are arranged on a clamping body 18 and fastened both pivotably and laterally.

Entspricht die Länge der Bürstenwalze 9 der Länge der Dosierwalze 5, so können in bestimmten Bereichen einstellbare Abstreifer 13 vorgesehen sein, die ein Abspritzen von Feuchtmittel bewirken. Das abgespritzte Feuchtmittel wird von Blenden 14,15, die an einem mit den Hebeln 11 verschiebbaren Klemmkörper 18 befestigt sind, über die Feuchtkastenwalze 6 dem Feuchtmittelvorrat 7 zugeführt. Anstelle der Abstreifer 13 können Saugdüsen 16 verwendet werden, die das überschüssige Feuchtmittel absaugen bzw. durch die Saugwirkung zum Verdunsten bringen. Die Saugdüsen 16 sind über eine Schlauchleitung 17 mit einem nicht dargestellten Saugaggregat verbunden. Die Saugwirkung ist hierbei für die einzelnen Saugdüsen unterschiedlich einstellbar.If the length of the brush roller 9 corresponds to the length of the metering roller 5, adjustable wipers 13 can be provided in certain areas, which cause the dampening solution to be sprayed off. The sprayed dampening solution is supplied to the dampening solution supply 7 by means of orifices 14, 15, which are fastened to a clamping body 18 which can be displaced with the levers 11, via the dampening box roller 6. Instead of the wipers 13, suction nozzles 16 can be used, which suck off the excess dampening solution or cause the evaporation to evaporate. The suction nozzles 16 are connected via a hose line 17 to a suction unit, not shown. The suction effect can be set differently for the individual suction nozzles.

Claims (4)

1. Vorrichtung zum Befeuchten der Druckplatte an Rotationsdruckmaschinen mit einer Feuchtkastenwalze, einer Dosierwalze und feuchtmittelauftragenden Walzen zur Erzeugung eines gleichmäßigen Feuchtmittelfilms mit sehr geringer Dicke,
dadurch gekennzeichnet,
daß der Dosierwalze (5) eine Bürstenwalze (9) zugeordnet ist, die vorzugsweise mit gleicher Umfangsgeschwindigkeit auf dieser abrollt und im Bereich mit zu hohem Feuchtmittelanteil einen Teil des Feuchtmittels übernimmt.1. Device for moistening the printing plate on rotary printing presses with a dampening box roller, a metering roller and dampening agent-applying rollers to produce a uniform dampening solution film with a very small thickness,
characterized,
that the metering roller (5) is assigned a brush roller (9) which preferably rolls on it at the same peripheral speed and takes over part of the dampening solution in the area with an excessively high dampening solution content. 2. Vorrichtung nach Anspruch l,
dadurch gekennzeichnet,
daß eine oder mehrere Bürstenwalzen (9), die eine Teillänge der Dosierwalze (5) aufweisen, axial verschiebbar und abstellbar gelagert sind.2. Device according to claim 1,
characterized,
that one or more brush rollers (9), which have a partial length of the metering roller (5), are axially displaceable and adjustable. 3. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Bürstenwalze (9) die Länge der Dosierwalze (5) aufweist und der Bürstenwalze in bestimmten Zonen Abstreifer (13) zugeordnet sind, die das überschüssige Feuchtmittel in den Feuchtmittelbehälter (8) zurückspritzen.3. Device according to claim 1,
characterized,
that the brush roller (9) has the length of the metering roller (5) and the brush roller in certain zones wipers (13) are assigned, which spray the excess dampening solution back into the dampening solution tank (8). 4. Vorrichtung nach Anspruch 1 und 3,
dadurch gekennzeichnet,
daß die Abstreifer als Saugdüsen (14) ausgebildet sind, die das überschüssige Feuchtmittel absaugen.4. Apparatus according to claim 1 and 3,
characterized,
that the wipers are designed as suction nozzles (14) which suck off the excess dampening solution.
EP84107606A 1983-07-23 1984-06-30 Damping device for the printing plate of a rotary printing machine Expired EP0132626B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84107606T ATE38490T1 (en) 1983-07-23 1984-06-30 DEVICE FOR HUMIDIFICATION OF THE PRINTING PLATE ON ROTARY PRINTING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3326699A DE3326699C1 (en) 1983-07-23 1983-07-23 Device for moistening a printing plate
DE3326699 1983-07-23

Publications (3)

Publication Number Publication Date
EP0132626A2 true EP0132626A2 (en) 1985-02-13
EP0132626A3 EP0132626A3 (en) 1985-10-02
EP0132626B1 EP0132626B1 (en) 1988-11-09

Family

ID=6204815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107606A Expired EP0132626B1 (en) 1983-07-23 1984-06-30 Damping device for the printing plate of a rotary printing machine

Country Status (7)

Country Link
US (1) US4624182A (en)
EP (1) EP0132626B1 (en)
JP (2) JPS6042043A (en)
AT (1) ATE38490T1 (en)
CA (1) CA1237944A (en)
DE (1) DE3326699C1 (en)
ES (1) ES8506514A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH089225B2 (en) * 1985-06-03 1996-01-31 東芝機械株式会社 Excess dampening water removal device in printing machine
JPS62288041A (en) * 1986-06-09 1987-12-14 Tokyo Kikai Seisakusho Ltd Water take-off device of mesh roller
US5264899A (en) * 1992-10-21 1993-11-23 Xerox Corporation Sheet moisture replacement system using porous rolls
JPH0644870U (en) * 1992-11-14 1994-06-14 株式会社淀川製鋼所 Insulated double roof
DE4429047A1 (en) * 1994-08-16 1996-02-22 Heidelberger Druckmasch Ag Device for washing the outer surface of cylinders of a rotary printing press
DE102004006231B3 (en) * 2004-02-09 2005-08-04 Koenig & Bauer Ag Transporting process for moistener involves increasing surface speed of second roll closer to that of the form cylinder as latter increases
DE102008003239B4 (en) * 2007-02-06 2015-12-03 Heidelberger Druckmaschinen Ag Method for operating a dampening system of a printing press
JP5069523B2 (en) * 2007-08-31 2012-11-07 株式会社加貫ローラ製作所 Water supply equipment for offset printing machine

Citations (5)

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Publication number Priority date Publication date Assignee Title
GB362131A (en) * 1930-11-14 1931-12-03 William Cyril Fowler Improvements in and relating to printing machines
DE804933C (en) * 1949-11-01 1951-05-04 Faber & Schleicher A G Squeezing device for dampening systems on printing machines
DE1127370B (en) * 1958-05-24 1962-04-12 William Gegenheimer Co Inc Dampening system for rotary flat printing machines
DE1940661A1 (en) * 1969-08-09 1971-02-18 Roland Offsetmaschf Dampening device for lithographic printing machines
FR2232444A1 (en) * 1973-06-07 1975-01-03 Maschf Augsburg Nuernberg Ag Inking and wetting appts. for rotary offset printer - has distributor rollers with brush units to ensure uniform application

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US176193A (en) * 1876-04-18 Improvement in damping apparatus for lithographic presses
US1364257A (en) * 1918-04-20 1921-01-04 Alfred D Hunt Dampening-regulator for lithographic presses
DE548280C (en) * 1929-08-28 1932-04-08 Franz Zimmer S Erben G M B H Device for cleaning the pattern rollers while printing on multicolored stuff printing machines
DE549437C (en) * 1931-03-26 1932-04-27 Heinrich Renck Process for refreshing amalgamated areas of amalgam printing forms
DE616773C (en) * 1932-10-27 1935-08-10 Jagenberg Werke Ag Device for dampening running webs of paper or the like.
US2162248A (en) * 1939-03-29 1939-06-13 Raymond C Delaplane Water control roller for offset presses
US2580667A (en) * 1947-10-21 1952-01-01 Time Inc Water motion for offset presses
US2804693A (en) * 1955-09-07 1957-09-03 Levey Fred K H Co Inc Printing
US3257940A (en) * 1962-11-23 1966-06-28 Dorothy M Strudwick Dampening system for lithographic offset printing presses
US3106154A (en) * 1963-01-08 1963-10-08 Miller Printing Machinery Co Dampener for printing presses
US3343484A (en) * 1964-12-16 1967-09-26 Harold P Dahlgren Lithographic dampener with skewed metering roller
DE1962363A1 (en) * 1969-12-12 1971-06-16 Koenig & Bauer Schnellpressfab Film dampening unit for offset printing machines
US4143596A (en) * 1977-05-04 1979-03-13 Ivett Robert W Lithographic press dampening system
DE2948986C2 (en) * 1979-12-05 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Medical examination facility
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB362131A (en) * 1930-11-14 1931-12-03 William Cyril Fowler Improvements in and relating to printing machines
DE804933C (en) * 1949-11-01 1951-05-04 Faber & Schleicher A G Squeezing device for dampening systems on printing machines
DE1127370B (en) * 1958-05-24 1962-04-12 William Gegenheimer Co Inc Dampening system for rotary flat printing machines
DE1940661A1 (en) * 1969-08-09 1971-02-18 Roland Offsetmaschf Dampening device for lithographic printing machines
FR2232444A1 (en) * 1973-06-07 1975-01-03 Maschf Augsburg Nuernberg Ag Inking and wetting appts. for rotary offset printer - has distributor rollers with brush units to ensure uniform application

Also Published As

Publication number Publication date
EP0132626A3 (en) 1985-10-02
ATE38490T1 (en) 1988-11-15
JPS6042043A (en) 1985-03-06
ES533303A0 (en) 1985-08-01
EP0132626B1 (en) 1988-11-09
ES8506514A1 (en) 1985-08-01
JPH0249634B2 (en) 1990-10-30
JPH022427B2 (en) 1990-01-18
DE3326699C1 (en) 1984-08-16
CA1237944A (en) 1988-06-14
JPS6042042A (en) 1985-03-06
US4624182A (en) 1986-11-25

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