EP1362701B1 - Procédé d'impression et machine d'impression utilisée pour mettre en oeuvre le procédé - Google Patents

Procédé d'impression et machine d'impression utilisée pour mettre en oeuvre le procédé Download PDF

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Publication number
EP1362701B1
EP1362701B1 EP20020011092 EP02011092A EP1362701B1 EP 1362701 B1 EP1362701 B1 EP 1362701B1 EP 20020011092 EP20020011092 EP 20020011092 EP 02011092 A EP02011092 A EP 02011092A EP 1362701 B1 EP1362701 B1 EP 1362701B1
Authority
EP
European Patent Office
Prior art keywords
ink
reservoir
supply
ink reservoir
nozzle
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
EP20020011092
Other languages
German (de)
English (en)
Other versions
EP1362701A1 (fr
Inventor
Ichiro Murakawa
Tadao Kubo
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.)
Umetani Mfg Co Ltd
Original Assignee
Umetani Mfg 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
Application filed by Umetani Mfg Co Ltd filed Critical Umetani Mfg Co Ltd
Priority to DE60236917T priority Critical patent/DE60236917D1/de
Priority to EP20020011092 priority patent/EP1362701B1/fr
Publication of EP1362701A1 publication Critical patent/EP1362701A1/fr
Application granted granted Critical
Publication of EP1362701B1 publication Critical patent/EP1362701B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/005—Ink viscosity control means
    • 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
    • B41F31/025—Ducts formed between two rollers
    • 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 a method of printing corrugated board sheets, and more particularly to a method of preventing ink for printing presses from increasing in viscosity and a printing press for use in practicing the method.
  • FIG. 8 shows a printing press comprising a closed box 3 which is slidable along an ink reservoir 11 and which has incorporated therein a removable ink tank 31 and is provided with an ink supply nozzle 4 (see U.S. Patent No. 5,697,299 ).
  • an apparatus for printing sheets includes a plate cylinder with a printing die mounted thereon and an impression cylinder disposed to oppose said plate cylinder.
  • sheets are passed through a clearance between the plate cylinder and the impression cylinder to carry out printing on the sheets.
  • the apparatus further includes an ink transfer roll and means for regulating an amount of the ink transferred, so that when printing is carried out, the ink is transferred to the printing die, while at the same time the ink transferred is regulated as the ink transfer roll rotates in contact with the printing die of the plate cylinder while the regulating means contacts a surface of the ink transfer roll.
  • the present invention provides a method of printing by a printing press wherein an ink is supplied from an ink supply-aspiration nozzle 4 to an ink reservoir 11 provided between an inking roll 1 and a squeeze roll 2 pressed into contact with the inking roll 1, and the ink is transferred from the inking roll 1 to a printing plate attached to a plate cylinder 9 by the rotation of the inking roll 1, the ink supply-aspiration nozzle 4 being connected to a closed box 3 housing an ink tank 31 therein, the closed box 3 and the ink supply-aspiration nozzle 4 being movable along the ink reservoir 11.
  • a diluting liquid is supplied to the ink reservoir 11 while performing the above steps.
  • the supply-aspiration nozzle 4 is moved first toward one end of the ink reservoir 11, and subsequently toward the other end of the reservoir 11.
  • the ink incessantly flows in the ink reservoir 11, which is continuously stirred, whereby the ink is prevented from increasing in viscosity. Especially because the ink flows between the opposite end portions of the ink reservoir 11, the ink moves over an increased distance and is stirred effectively.
  • the diluting liquid supplied for replenishment is thoroughly mixed with the ink owing to the stirring effect produced by the flow of ink.
  • the ink supply-aspiration nozzle 4 is slidable with the closed box 3 removably housing the ink tank 31 therein, so that the pipe channel between the nozzle 4 and the closed box 3 can be shortened. This prevents the ink from increasing in viscosity without necessitating a long circulation path conventionally required, consequently greatly diminishing the waste of ink to be involved in changing the ink and permitting liquid waste treatment at a much lower cost than conventionally.
  • the inking roll 1 and the squeeze roll 2 are arranged so as to be movable toward or away from each other, and the ink reservoir 11 in the form of a groove is provided between the two rolls 1, 2.
  • the two rolls 1, 2 are rotatable in directions (inward directions) to squeeze the ink of the reservoir 11, and the ink on the surface of the inking roll 1 is transferred to a printing plate on a plate cylinder 9 to print a corrugated board sheet.
  • FIG. 2 is a right side elevation of FIG. 1 and shows the cover 6 as partly broken away.
  • the cover 6 is in the form of a case housing the two rolls 1, 2 therein.
  • the cover 6 includes a top plate 65 which has an opening 61 for fitting therein the nozzles 4, 5, 34, 70 to be described below and movable along the ink reservoir 11, the opening 61 being formed at a position above and opposed to the ink reservoir 11.
  • the cover 6 has a lower side provided with an opening 62 for permitting the printing plate (not shown) on the plate cylinder 9 to come into contact with the inking roller 1.
  • the cover 6 has a bottom plate 63 opposed to the squeeze roll 2 and bent obliquely upward toward the inking roll 1.
  • the upper edge of the bent portion serves as a closing plate 63a positioned in proximity to the inking roll 1 with a clearance 67 formed therebetween.
  • a pair of fine spray nozzles 21, 21 are arranged below the central portion of the squeeze roll 2, as spaced apart by a small distance along the length of the roll and directed obliquely upward.
  • the nozzles are arranged with their forward ends oriented toward each other (see FIG. 3A ).
  • the nozzle mount plate 33 is positioned horizontally above the ink reservoir 11 and has two ink supply-aspiration nozzles 4, 4 respectively at opposite ends thereof and two cleaning liquid waste collecting nozzles 5, 5 positioned inwardly of the respective nozzles 4, 4.
  • the nozzles 4, 5 are directed downward.
  • the distance between the two ink supply-aspiration nozzles 4, 4 is 20 to 60 cm, for example, in accordance with the size of the printing press and the size of the closed box 3.
  • the nozzles 4, 5 have sharp lower ends cut obliquely in conformity with the bottom shape of the ink reservoir 11.
  • the nozzles 4, 5 have their lower ends positioned at the same level.
  • a vacuum suction pipe 35 Connected to the closed box 3 are a vacuum suction pipe 35 and a pressurized air supply pipe 36.
  • pressurized air By sending pressurized air into the closed box 3 from the supply pipe 36, ink can be forced out from the ink tank 31 and supplied from the ink supply-aspiration nozzles 4 to the ink reservoir 11.
  • Each of the liquid waste collecting nozzles 5 is connected to a suction pipe 51, which is a flexible pipe, and then to a collecting can 50.
  • a suction pipe 51 which is a flexible pipe
  • a vacuum suction pipe 53 Connected to the can 50 is a vacuum suction pipe 53, through which air is aspirated from the can 50 to reduce the internal pressure of the can 50.
  • suction pipes 52 Also connected to the collecting can 50 are suction pipes 52 which are connected to the respective weir members 8.
  • diluting liquid supply nozzles 7, 7 Arranged at opposite ends of the ink reservoir 11 are diluting liquid supply nozzles 7, 7 which are so positioned as to avoid collision with the closed box 3.
  • the slide drive device 25 slidingly moves the closed box 3 along the ink reservoir 11.
  • FIG. 8 shows an example of such device which appears useful.
  • the illustrated device comprises a rail 26 extending along the ink reservoir 11 and positioned above the rolls 1, 2, and rollers 27, 27, 27, 27 connected to the closed box 3 and fitted in the rail 26.
  • the closed box 3 runs along the rail 26.
  • the lift drive unit 32 attached to the closed box 3 moves the nozzle mount plate 33 upward and downward (see FIG. 1 ).
  • the closed box 3 thereafter moves to one end of the ink reservoir 11 as seen in FIG. 3B .
  • the nozzles 4 as brought to this location are lowered to the intermediate position and immersed into the ink in the reservoir 11 (as indicated in solid lines in FIG. 3B ).
  • the nozzles 4 After collecting the ink into the closed box 3 for about 2 seconds, the nozzles 4 aspirate the ink from the reservoir 11 while moving from this location toward the midportion of the reservoir 11 over a predetermined section, i.e. about 50 cm according to the embodiment (the position indicated in chain lines in FIG. 3B ). This section will be termed a first collecting section.

Landscapes

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

Claims (6)

  1. Procédé d'impression au moyen d'une presse à imprimer, dans lequel une encre est envoyée depuis une buse d'alimentation en encre par aspiration (4) dans un réservoir d'encre (11) placé entre un rouleau encreur (1) et un rouleau essoreur (2) pressé contre le rouleau encreur (1), et l'encre est transférée du rouleau encreur (1) vers une plaque d'impression fixée à un cylindre porte-plaque (9) par la rotation du rouleau encreur (1), la buse d'alimentation en encre par aspiration (4) étant connectée à une boîte fermée (3) destinée à collecter l'encre aspirée, la boîte fermée (3) et la buse d'alimentation en encre par aspiration (4) étant mobiles le long du réservoir d'encre (11), comprenant les étapes consistant à :
    - envoyer l'encre de la buse d'alimentation en encre par aspiration (4) vers le réservoir d'encre (11) en un endroit situé au-dessus du réservoir d'encre (11) et dans une partie médiane dans le sens de la longueur du réservoir d'encre (11),
    - déplacer la buse d'alimentation par aspiration (4) de l'endroit situé le long du réservoir d'encre (11) vers une extrémité du réservoir d'encre (11), puis arrêter la buse (4) et faire aspirer par la buse (4) une quantité prédéterminée d'encre dans le réservoir d'encre (11) pour placer l'encre aspirée dans la boîte fermée (3) et produire un écoulement d'encre dans le réservoir d'encre (11),
    - effectuer un déplacement supplémentaire de la buse d'alimentation par aspiration (4) de l'endroit d'arrêt le long du réservoir d'encre (11) vers l'autre extrémité du réservoir d'encre (11) et faire aspirer par la buse (4) une quantité prédéterminée d'encre dans le réservoir d'encre (11) pour placer l'encre aspirée dans la boîte fermée (3) et produire un écoulement d'encre dans le réservoir d'encre (11),
    dans lequel un liquide diluant est introduit dans le réservoir d'encre (11) pendant que lesdites étapes sont exécutées de façon répétée.
  2. Procédé d'impression selon la revendication 1, dans lequel la buse d'alimentation par aspiration (4) collecte l'encre sur une section de collecte de longueur prédéterminée.
  3. Procédé d'impression selon la revendication 2, dans lequel la section de collecte est distante de la partie médiane du réservoir d'encre (11).
  4. Procédé d'impression selon la revendication 3, dans lequel la buse d'alimentation par aspiration (4) est levée au-dessus du niveau de liquide de l'encre après avoir collecté de l'encre de la section de collecte, puis est ramenée à la partie médiane.
  5. Procédé d'impression selon l'une des revendications 1 à 4, dans lequel le liquide diluant est introduit dans le réservoir d'encre (11) par une buse mobile (70) fixée à la boîte mobile (3).
  6. Procédé d'impression selon l'une des revendications 1 à 5, dans lequel le rouleau essoreur (2) est couvert par un couvercle (6), le couvercle (6) étant rempli de façon interne par un liquide diluant pulvérisé sous la forme d'un brouillard fin, et le liquide diluant est introduit dans le réservoir d'encre (11) en mouillant une surface du rouleau essoreur (2) avec de fines particules du liquide diluant.
EP20020011092 2002-05-17 2002-05-17 Procédé d'impression et machine d'impression utilisée pour mettre en oeuvre le procédé Expired - Lifetime EP1362701B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE60236917T DE60236917D1 (de) 2002-05-17 2002-05-17 Druckverfahren und Druckmaschine zur Durchführung des Verfahrens
EP20020011092 EP1362701B1 (fr) 2002-05-17 2002-05-17 Procédé d'impression et machine d'impression utilisée pour mettre en oeuvre le procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20020011092 EP1362701B1 (fr) 2002-05-17 2002-05-17 Procédé d'impression et machine d'impression utilisée pour mettre en oeuvre le procédé

Publications (2)

Publication Number Publication Date
EP1362701A1 EP1362701A1 (fr) 2003-11-19
EP1362701B1 true EP1362701B1 (fr) 2010-07-07

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EP20020011092 Expired - Lifetime EP1362701B1 (fr) 2002-05-17 2002-05-17 Procédé d'impression et machine d'impression utilisée pour mettre en oeuvre le procédé

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EP (1) EP1362701B1 (fr)
DE (1) DE60236917D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080229949A1 (en) * 2007-03-20 2008-09-25 Komori Corporation Liquid transfer apparatus
JP5497270B2 (ja) * 2007-03-28 2014-05-21 株式会社小森コーポレーション 液体転移装置
CN107696682A (zh) * 2017-11-20 2018-02-16 邹文峰 一种可调节油墨品质的丝网印刷机
CN114025965A (zh) * 2018-12-20 2022-02-08 博斯特佛罗伦萨有限公司 使用压力的墨分配系统
CN114571847A (zh) * 2022-03-10 2022-06-03 温州鸣旭机械科技有限公司 一种正反两面同步印刷设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265535A (en) * 1991-12-28 1993-11-30 Kabushiki Kaisha Isowa Printing machine for corrugated board sheet
JPH06947A (ja) * 1992-06-17 1994-01-11 Isowa Corp インキ転移機構の湿度調整装置
JP2627865B2 (ja) 1994-05-25 1997-07-09 株式会社丸松製作所 輪転印刷機のインク供給及び洗浄装置
JPH08336955A (ja) * 1995-06-14 1996-12-24 Isowa Corp 印刷機におけるインクの供給・回収装置
JP3370600B2 (ja) 1998-04-17 2003-01-27 株式会社イソワ フレキソ印刷機
JP3581306B2 (ja) * 2000-03-31 2004-10-27 株式会社イソワ インキ粘度測定装置並びにインキ粘度調整方法及びその装置

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EP1362701A1 (fr) 2003-11-19
DE60236917D1 (de) 2010-08-19

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