EP0382572B1 - Anordnung zum Auftragen der Farbe für Druckmaschinen - Google Patents

Anordnung zum Auftragen der Farbe für Druckmaschinen Download PDF

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Publication number
EP0382572B1
EP0382572B1 EP90301425A EP90301425A EP0382572B1 EP 0382572 B1 EP0382572 B1 EP 0382572B1 EP 90301425 A EP90301425 A EP 90301425A EP 90301425 A EP90301425 A EP 90301425A EP 0382572 B1 EP0382572 B1 EP 0382572B1
Authority
EP
European Patent Office
Prior art keywords
ink
roller
rollers
metallic material
inking device
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.)
Revoked
Application number
EP90301425A
Other languages
English (en)
French (fr)
Other versions
EP0382572A2 (de
EP0382572A3 (de
Inventor
Yuichi Okamura
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.)
Tokyo Kikai Seisakusho Co Ltd
Original Assignee
Tokyo Kikai Seisakusho Co Ltd
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=12282438&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0382572(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tokyo Kikai Seisakusho Co Ltd filed Critical Tokyo Kikai Seisakusho Co Ltd
Publication of EP0382572A2 publication Critical patent/EP0382572A2/de
Publication of EP0382572A3 publication Critical patent/EP0382572A3/de
Application granted granted Critical
Publication of EP0382572B1 publication Critical patent/EP0382572B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N7/00—Shells for rollers of printing machines
    • B41N7/06—Shells for rollers of printing machines for inking rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02—Top layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/10—Location or type of the layers in shells for rollers of printing machines characterised by inorganic compounds, e.g. pigments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/14—Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds

Definitions

  • the present invention relates to an inking device for use in printing machines and, more particularly, to an inking arrangement in which ink is supplied to the printing plate surface by means of ink form rollers.
  • a typical conventional inking arrangement in which ink is supplied to the plate surface by means of ink form rollers comprises two different types of rollers which are alternately disposed in contact with or in close proximity to each other, one of the two types being a metallic roller having an outer peripheral surface made of a metallic material, and the other being a rubber roller having an outer peripheral surface made of a rubber material.
  • a metallic roller having an outer peripheral surface made of a metallic material
  • a rubber roller having an outer peripheral surface made of a rubber material.
  • the ink receiving ability of the metallic roller having an outer peripheral surface made of a metallic material may deteriorate during the printing operation, resulting in an insufficient supply of ink to the printing surface. Deterioration of the ink receiving ability leads to a roller stripping phenomenon wherein the metallic outer peripheral surface of the roller becomes exposed due to a failure in the transfer of ink.
  • EP-A-0 141 190 discloses an inking system including alternately arranged rubber- and plastics-coated rollers. This document is not, however, concerned with the roller stripping phenomenon addressed by the present invention.
  • the present invention provides an inking device for printing machines which device consists of roller train consisting of a plurality of rollers arranged in close proximity to each other characterised in that the surface layer of each of the rollers comprises a non-metallic material.
  • At least two of the rollers are arranged in contact with each other.
  • the non-metallic material is an oleophilic material, which may be a resin or synthetic resin.
  • the non-metallic material includes minute hollow bodies and/or a powder of a hard material.
  • the minute hollow bodies may be microballoons, microspheres, hollow bubbles or synthetic foam. Minute hollow bodies at the surface of the surface layer are preferably open such that ink can be retained in the hollow portion
  • the hard material may be a metallic or ceramic material.
  • rollers constituting the roller train in the inking arrangement rotate in their respective directions, i.e., alternate rollers rotate in the same direction, to supply ink by a successive ink transfer operation from an ink furnishing device to a printing plate fitted to the outer peripheral surface of a plate cylinder.
  • each roller is made of either a non-metallic material which has excellent ink receiving ability or a mixed material containing such a non-metallic material as a base material, it is possible to obtain an excellent ink transfer condition and hence possible to prevent the occurrence of the roller stripping phenomenon, which is likely to occur, for example, in offset printing process.
  • the inking arrangement comprises an ink furnishing device 1 and a roller train consisting of an ink fountain roller 2, a second roller 3, a first roller 4 and ink form rollers 5 which are arranged in succession so as to rotate while being in contact with the neighbouring rollers at their respective outer peripheral surfaces.
  • the ink fountain roller 2 is supplied with ink from the ink furnishing device 1.
  • the second roller 3 is supplied with ink from the ink fountain roller 2 and transfers the ink to the first roller 4.
  • the first roller 4 transfers the ink to two ink form rollers 5, 5 which are juxtaposed to each other.
  • the ink form rollers 5, 5 rotate while being in contact at their outer peripheral surfaces with a printing plate fitted to the outer peripheral surface of a plate cylinder P, thereby transferring the ink supplied from the first roller 4 to the printing plate fitted on the plate cylinder P.
  • Figs. 1(a) to 1(e) show examples of inking arrangements having various ink furnishing devices 1, respectively.
  • the ink furnishing device 1 shown in Fig. 1(a) is an ink fountain.
  • the ink furnishing devices 1 shown in Figs. 1(b) and 1(e) are ink fountains in each of which at least a part of the opening thereof is divided by the ink fountain roller 2.
  • the ink furnishing device 1 shown in Fig. 1(c) is an ink discharge body.
  • the ink furnishing device 1 shown in Fig. 1(d) is an ink rail having an ink pump IP.
  • Each of the rollers i.e., the ink fountain roller 2, the second roller 3, the first roller 4 and the ink form rollers 5, has either a surface layer S made of a non-metallic material or a surface layer T made of a mixed material containing a non-metallic material as a base material.
  • Table 1 below shows possible combinations of two different types of rollers, that is, the one type having the surface layer S and the other type having the surface layer T, to constitute a roller train.
  • non-metallic material preferably has an excellent ink receiving ability, and when the ink used is an oil-based one, the non-metallic material is preferably oleophilic and oil-resistant.
  • non-metallic materials usable in the present invention include synthetic resins such as urethane resins, nitrile butadiene rubber (NBR) and polychloroprene rubber (CR) and resins such as natural rubber (NR) and such like.
  • An example of the above-mentioned mixed material that contains a non-metallic material as a base material is a composition formed by substantially uniformly dispersing and mixing, singly or in combination of more than one material, minute hollow bodies and/or the powder of a hard material in a urethane resin.
  • the minute hollow bodies are generally called microballoons, microspheres, hollow bubbles, or synthetic foam. It is possible to use minute hollow bodies which have a particle diameter in the range of about 5 ⁇ m to about 300 ⁇ m, at least.
  • the powder of a hard material it is possible to use a ceramic or metallic powder having a particle diameter in the range of about 1 ⁇ m to about 100 ⁇ m, at least.
  • the size and mixing ratio of components of the mixed material may be chosen as desired.
  • the ink fountain roller 2 and the second roller 3 are in close contact with each other, these two rollers may also be disposed in close proximity to each other with a proper gap 8 provided therebetween, as shown in Fig. 2.
  • the arrangement may also be such that the second roller 3 is pivotally mounted so as to alternatively come into contact with the ink fountain roller 2 and the first roller 4, although this alternative arrangement is not shown.
  • Figs. 3(a) to 3(g) show examples of various combinations of the inking arrangement shown in Fig. 1(a) with various blades.
  • a doctor blade 6 that removes an excess of ink supplied onto the second roller 3, an ink film thickness regulating blade 7 that regulates the thickness of ink film on the ink fountain roller 2 and an ink film thickness flatting blade 8 that makes uniform the thickness of ink film on the first roller 4 are combined as required with the roller train and disposed in opposing relation to the associated rollers.
  • the inking arrangement including blades is not necessarily limited to that shown in Fig. 1(a). Blades can be applied to any of the aforementioned inking arrangements comprising various combinations of rollers.
  • the ink fountain roller 2, the second roller 3 and the first roller 4 in the inking arrangement may be driven by either the same driving system or individual driving means.
  • the peripheral speeds of these rollers need not be the same.
  • the ink fountain roller 2, the second roller 3, the first roller 4, the ink form rollers 5, 5 and the plate cylinder P rotate in their respective directions, i.e., alternate rollers rotate in the same direction, so that the ink which is supplied from the ink furnishing device 1 to the ink fountain roller 2 is effectively transferred from the roller 2 to the second roller 3, the first roller 4 and the ink form rollers 5, 5 in succession with the ink film thickness being properly regulated, and it is further transferred from the ink form rollers 5, 5 to the printing plate fitted on the plate cylinder P.
  • each roller has either a surface layer S made of a non-metallic material which has excellent ink receiving ability or a surface layer T made of a mixed material containing such a non-metallic material as a base material, it is possible to obtain an excellent ink transfer condition and hence possible to prevent occurrence of the roller stripping phenomenon, which is likely to occur, for example, during an offset printing process.
  • each roller has a surface layer made of a mixed material having minute hollow bodies dispersed and mixed therein, part of the shell layer of each minute hollow body on the outer peripheral surface of the roller is removed to open the hollow portion. Accordingly, the opened hollow bodies positively retain the ink transferred from the upstream side and transfer it to the downstream side. Therefore, this arrangement is even more preferable from the viewpoint of preventing failure in transfer of ink.
  • each roller has a surface layer made of a mixed material having the powder of a hard material dispersed and mixed therein, the hard material powder that is a component of the mixture bears the friction acting on the roller. Accordingly, if this arrangement is used when the doctor blade 6 or the ink film thickness flatting blade 7 is used in contact with the outer peripheral surface of a roller or when one or more of the ink fountain roller 2, the second roller 3 and the first roller 4 are different from the rest in the peripheral speed, the wear of the outer peripheral surfaces of the rollers can be effectively suppressed. Proper selection of a hard powder material and a mixing ratio of components of the mixture makes it possible to improve the thermal conductivity and also suppress generation of heat in operation.
  • each roller has either a surface layer S made of a non-metallic material which has excellent ink receiving ability or a surface layer T made of a mixed material containing such a non-metallic material as a base material. Therefore, it is possible to obtain an excellent ink transfer condition and hence possible to prevent occurrence of the roller stripping phenomenon, which is likely to occur in an offset printing process, for example. Since an adequate amount of ink is supplied to the printing plate surface, it is possible to continuously obtain prints of uniform quality and also reduce spoilage.
  • roller surface properties adapted to each particular application and which is reasonable in cost by properly using a non-metallic material as a main component of the roller surface layer material.
  • each roller has a surface layer made of a mixed material containing a non-metallic material as a base material
  • the ink receiving ability and ink transfer ability of the outer peripheral surface of the roller can be suitably selected by properly selecting a base material and components of the mixture.
  • constituent materials and mixing ratios of components of the mixture it is possible to improve the wear resistance and thermal conductivity of the roller surface layer or add and regulate ink retaining ability with relative ease and at low cost. Accordingly, it is possible to provide an inking arrangement free from insufficient supply of ink

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Printing Methods (AREA)
  • Coating Apparatus (AREA)

Claims (12)

  1. Anordnung zum Auftragen von Farbe für Druckmaschinen, wobei eine Vielzahl von Walzen (2, 3, 4, 5) eines Walzenzuges in unmittelbarer Nähe zueinander angeordnet sind,
    dadurch gekennzeichnet,
    daß die Oberflächenschicht (S, T) jeder Walze ein nichtmetallisches Material enthält.
  2. Anordnung nach Anspruch 1, wobei zumindest zwei Walzen (2, 3, 4, 5) in Berührung miteinander stehen.
  3. Anordnung nach Anspruch 1 oder 2, wobei das nichtmetallische Material ein oleophiles Material ist.
  4. Anordnung nach Anspruch 1, 2 oder 3, wobei das nichtmetallische Material (S, T) ein Harz oder ein Kunstharz ist.
  5. Anordnung nach einem der Ansprüche 1 bis 4, wobei das nichtmetallische Material (S, T) ein Urethanharz, ButadienAcrylnitril-Kautschuk, Polychloroprenkautschuk oder Naturkautschuk ist.
  6. Anordnung nach einem der vorstehenden Ansprüche, wobei das nichtmetallische Material (T) winzige Hohlkörper einschließt.
  7. Anordnung nach Anspruch 6, wobei die winzigen Hohlkörper durch Mikroballons, Mikrokugeln, Hohlblasen oder Synthetikschaum gebildet sind.
  8. Anordnung nach Anspruch 6 oder 7, wobei die winzigen Hohlkörper einen Durchmesser innerhalb des Bereiches von 5 µm bis 300 µm aufweisen.
  9. Anordnung nach Anspruch 6, 7 oder 8, wobei die winzigen Hohlkörper an der Oberfläche der Oberflächenschicht offen sind, so daß Farbe in den Hohlabschnitten gebunden wird.
  10. Anordnung nach einem der vorstehenden Ansprüche, wobei das nichtmetallische Material (T) ein Pulver aus Hartmaterial einschließt.
  11. Anordnung nach Anspruch 10, wobei das Hartmaterial ein keramisches oder metallisches Material ist.
  12. Anordnung nach Anspruch 10 oder 11, wobei die Partikelgröße des Pulvers innerhalb des Bereiches von 1 µm bis 100 µm ist.
EP90301425A 1989-02-10 1990-02-09 Anordnung zum Auftragen der Farbe für Druckmaschinen Revoked EP0382572B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1029666A JPH0822591B2 (ja) 1989-02-10 1989-02-10 印刷機におけるインキ供給装置
JP29666/89 1989-02-10

Publications (3)

Publication Number Publication Date
EP0382572A2 EP0382572A2 (de) 1990-08-16
EP0382572A3 EP0382572A3 (de) 1991-04-24
EP0382572B1 true EP0382572B1 (de) 1994-12-07

Family

ID=12282438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90301425A Revoked EP0382572B1 (de) 1989-02-10 1990-02-09 Anordnung zum Auftragen der Farbe für Druckmaschinen

Country Status (6)

Country Link
EP (1) EP0382572B1 (de)
JP (1) JPH0822591B2 (de)
AT (1) ATE115046T1 (de)
AU (1) AU619383B2 (de)
CA (1) CA2008615C (de)
DE (1) DE69014670T2 (de)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3722050A (en) * 1970-11-16 1973-03-27 Speed O Print Business Machine Rollers
GB2019317B (en) * 1978-04-18 1982-07-28 Dahlgren H P Reversible newspaper press
JPS55106886A (en) * 1979-02-12 1980-08-16 Naoki Shinohara Surfin board provided with propeller
US4507158A (en) * 1983-08-12 1985-03-26 Hewlett-Packard Co. Trench isolated transistors in semiconductor films
DE3334470C2 (de) * 1983-09-23 1991-01-24 Koenig & Bauer AG, 8700 Würzburg Farbwerk für eine Rotationsdruckmaschine
JPS6114997A (ja) * 1984-06-29 1986-01-23 Kotobuki Seihan Insatsu Kk オフセツト印刷用のインキングロ−ラ
JPS6317196A (ja) * 1986-07-08 1988-01-25 Takehiko Yagi アクアラングの推進用エア−モ−タ−
JPS63180398U (de) * 1987-05-11 1988-11-22
DE3787895T2 (de) * 1987-10-05 1994-05-19 Kinyosha Kk Tintenrolle für druckpressen und verfahren zur herstellung.
DE68922568T2 (de) * 1988-10-14 1996-01-18 Tokyo Kikai Seisakusho Ltd Farbzuführvorrichtung für eine Druckmaschine.
JP2616901B2 (ja) * 1988-11-01 1997-06-04 株式会社 東京機械製作所 多色刷用輪転印刷機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Elsevier's "DICTIONARY OF THE PRINTING AND ALLIED INDUSTRIES", 1983, page 505 *

Also Published As

Publication number Publication date
DE69014670T2 (de) 1995-06-01
DE69014670D1 (de) 1995-01-19
JPH0822591B2 (ja) 1996-03-06
CA2008615A1 (en) 1990-08-10
CA2008615C (en) 2002-03-12
ATE115046T1 (de) 1994-12-15
EP0382572A2 (de) 1990-08-16
EP0382572A3 (de) 1991-04-24
AU4919890A (en) 1990-08-16
AU619383B2 (en) 1992-01-23
JPH02209243A (ja) 1990-08-20

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