EP0304445B1 - Farbwerk, dessen farbaufstrich steuerbar ist - Google Patents

Farbwerk, dessen farbaufstrich steuerbar ist Download PDF

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Publication number
EP0304445B1
EP0304445B1 EP88901784A EP88901784A EP0304445B1 EP 0304445 B1 EP0304445 B1 EP 0304445B1 EP 88901784 A EP88901784 A EP 88901784A EP 88901784 A EP88901784 A EP 88901784A EP 0304445 B1 EP0304445 B1 EP 0304445B1
Authority
EP
European Patent Office
Prior art keywords
roller
ink
inking
lifter
sections
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
EP88901784A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0304445A1 (de
Inventor
Kurt Weder
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.)
Concepta Print AG
Original Assignee
Concepta Print 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 Concepta Print AG filed Critical Concepta Print AG
Priority to AT88901784T priority Critical patent/ATE69580T1/de
Publication of EP0304445A1 publication Critical patent/EP0304445A1/de
Application granted granted Critical
Publication of EP0304445B1 publication Critical patent/EP0304445B1/de
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
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/14—Applications of messenger or other moving transfer rollers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/32—Means to vary the time of contact of one or more rollers in an ink train
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/45—Sensor for ink or dampening fluid thickness or density

Definitions

  • the invention relates to an inking unit according to the preamble of claim 1.
  • European Patent Publication No. 113 905 describes a method for setting the color application in an ink fountain.
  • the known ink fountain has an inking roller and a doctor blade which cooperates with it and is divided into individual trimmings.
  • Each squeegee section is assigned an adjusting screw and an angle piece which can be actuated by it for changing the distance between the squeegee end and the inking roller.
  • the thickness of the ink layer on the ink roller and thus the ink density on the printed paper sheet can be adjusted in sections by actuating the adjusting screws.
  • this known inking unit it is desirable to improve the setting accuracy of the ink application.
  • a color metering device for book and offset printing machines is disclosed in European patent application with publication number 131 104.
  • the ink is transferred from an ink fountain via an ink fountain roller to a transfer roller by means of two rows of ink lifter disks.
  • Each of these ink-lifting disks can be swiveled back and forth by means of an electromagnet between a system on the transfer roller or a system on the ink fountain roller.
  • the amount of ink delivered by the latter to the lifting disk can be determined.
  • it is possible in principle with this device to improve the setting accuracy of the paint application. No actual control is disclosed in this document, however Design and mode of operation is essential for the accuracy of the color application and the reproducibility of the latter.
  • Such a control device is shown, for example, in US Pat. No. 4,402,263.
  • the ink transfer from an inking roller to a friction roller takes place by means of lifting disks arranged side by side, the lateral surfaces of which are essentially formed from two swiveling and radially adjustable jaws, the contact time on the inking roller and on the friction roller being adjustable depending on the position of these jaws.
  • An adjustment mechanism which comprises an electric motor, a worm gear and an adjustment linkage, is assigned to each of these lifting disks.
  • Each electric motor is controlled by a color density measuring device. With this device, the amount of paint to be transferred can be automatically controlled for each of the lifting discs.
  • the technical effort involved is considerable.
  • high precision in the individual mechanical parts of each of the lifting disks and each of the associated drives is required if a corresponding accuracy is to be achieved.
  • the object of the present invention to provide an inking unit in which the ink application can be regulated very finely, with the invention also being intended to achieve a significant simplification compared to the known prior art. Since the invention relates in particular to presses, it is particularly advantageous if the ink in the inking unit can be exchanged quickly.
  • the inking unit according to the invention is characterized by the features stated in the characterizing part of patent claim 1.
  • Fig. 1 shows the cross section of a corner area of an inking unit 1 of a flat printing press, of which only one side wall 2 is visible.
  • the inking unit 1 comprises an applicator roller 3, a preliminary roller 4, a friction roller 5, a siphon roller 6 and an ink fountain 7.
  • an ink roller 8 is rotatable and a doctor blade 9 is arranged to be adjustable.
  • an angle piece 10 is fastened, the angled end 11 of which forms a groove 13 with the adjacent wall 12 of the ink fountain 7, which groove is open at the bottom.
  • a rod 14 extends between the side wall 2 visible in FIG. 1 and the non-visible side wall of the inking unit 1.
  • the ink fountain 7 is inserted into the inking unit 1 such that the rod 14 is located in the groove 13.
  • the bottom 15 of the ink fountain 7 is supported on at least two set screws 16, which are screwed into projections 17 of the ink fountain 1.
  • a recess 19 with a square cross-section is provided in an end face of the shaft 18, into which a square on an axially displaceable and not shown drive shaft of a motor mounted in the side wall of the ink fountain 1, not shown, can be inserted.
  • the doctor blade 9, which can be pivoted about a shaft 20, can be adjusted by means of a plurality of adjusting screws 21 for setting the ink application.
  • the inking roller 8 is driven in a counterclockwise direction with reference to FIG. 1. Only the lower part of the inking roller 8 dips a little into the ink, not shown. The thickness of the ink layer picked up by the ink roller 8 is regulated with the doctor blade 9.
  • the lifter roller 6 is divided into a number of sections in length, e.g. twenty, divided.
  • Each of the sections 6 'and 6 ⁇ , two of which are shown in Fig. 2, is rotatably mounted on a two-armed lever 22.
  • a stepped pin 23 is attached to each of the levers 22.
  • a roller bearing 24, which carries a bushing 25, is placed on the stepped part of the bolt 23.
  • the outer surface of the sleeve 25 is to form the section 6 'or 6' of the lever roller with an elastic layer 26, preferably made of rubber, coated.
  • Each lever 22 has a recess approximately in the middle, on the edge region of which a bearing bush 27 is fastened.
  • a common axis 28 extends through all the bearing bushes 27, about which the levers 22 can be pivoted independently of one another.
  • the bearing bushes 27 can, for example, be sliding bushes which have a lining 29 made of a beryllium-copper alloy.
  • the bearing bushes 27 also serve as spacers between adjacent levers 22.
  • an approach 30 made of ferromagnetic material is arranged on the lever arm 6 ′ or 6 ⁇ opposite the lever roller section.
  • the approach 30 serves as an anchor for an electromagnet 31.
  • the electromagnets 31 are each rigidly connected to a support rod 33 with a rectangular cross section by means of an angled support 32.
  • the support rod 33 is attached at its ends to the side wall 2 and to the side wall of the inking unit 1, not shown.
  • the amount of ink transferred through the lifter roller sections 6 'or 6' from the inking roller 8 to the friction roller 5 is dependent on the speed of rotation of the inking roller 8 or the lifter roller portion and the time during which the electromagnet 31 is energized.
  • the maximum duration during which the electromagnet 31 is excited corresponds to the duration of one revolution of the lifter roller section 6 'or 6' concerned. If the electromagnet 31 is energized for the entire duration mentioned, the entire jacket surface of the lifter roller section 6 'or 6' ink is taken up by the inking roller 8 and the maximum amount of ink is transferred to the friction roller 5.
  • the electromagnet 31 of the respective lifter roller section 6 'or 6 ⁇ is only energized for half of the duration mentioned and accordingly only half the lateral surface of this lifter roller section takes up ink from the inking roller 8 and accordingly, only half the amount of paint is on transfer the friction roller 5.
  • any intermediate value between zero and maximum amount of ink can be transferred from the inking roller 8 to the friction roller 5.
  • the doctor blade 9 of the zone in question can be adjusted by means of the adjusting screw 21 so that the ink layer on the ink roller 8 becomes thicker.
  • a one-armed lever can also be used, in which case the electromagnet 31 must then be arranged on the other side of the extension 30 serving as an anchor.
  • an electric motor is used which drives an eccentric disk which acts directly on the shoulder 30.
  • a spring not shown, can be provided, which brings the lever 22 into its rest position, in which the lifter roller sections 6 'and 6' rest on the friction roller 5, when the electromagnet 31 is not energized.
  • FIG. 3 shows the block diagram of a system for measuring and setting the color density values of a printed sheet 34 which is located on a measuring station 35.
  • this system includes a control device 36, a color density meter 37, which is connected to the control unit 36 via an interface 38, and measuring section fields 39 arranged on the measuring station 35, each of which has a light-emitting diode 40 and a pushbutton 41.
  • the measuring section fields 39 divide the printed sheet into a number of sections, which sections form the lifter roller sections 6 'or 6 ⁇ correspond.
  • the color density measurement values measured with the color density meter 37 at the areas of the printed sheet indicated by the measurement section fields 39 reach the control device 36 via the interface 38. So that the control device 36 can recognize to which measurement section field 39 the received color density measurement value belongs, the control device 36 actuates this the push button 41 reported via conductor 42. If the received color density measured value is stored in the correct place, the associated light-emitting diode 40, which is controlled via conductor 43, lights up and the color density is then carried out in the next measuring section field 39.
  • the determined color density measured values are stored in a memory, not shown, of the control device 36 until a new series of measurements is carried out.
  • the winding of each of the twenty electromagnets 31 is connected via a conductor of a conductor bundle 44 to a converter, not shown, in the control device 36.
  • Each of these converters generates a control pulse for exciting the associated electromagnet 31, the duration of the control pulse being dependent on the stored color density measured value in question. If, for example, the color density measured value is comparatively small with an average value, the duration of the control pulse is increased.
  • the ink application can be carried out automatically depending on the measured color density are regulated and nevertheless it is possible in the case of a flat printing press to quickly and easily replace the ink fountain 15 including the inking roller 8 in order to change the printing ink. No changes to the ink fountain are necessary for this, but previously known ink fountains can be used without modification.
  • the above-described lifter roller 6, which is divided into sections, can also advantageously be used in a printing press in which the ink fountain is an integral part of the printing press. In this case, this has a beneficial effect in a more precise dosage of the paint spread.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Paints Or Removers (AREA)
EP88901784A 1987-03-03 1988-03-03 Farbwerk, dessen farbaufstrich steuerbar ist Expired - Lifetime EP0304445B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88901784T ATE69580T1 (de) 1987-03-03 1988-03-03 Farbwerk, dessen farbaufstrich steuerbar ist.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH79487 1987-03-03
CH794/87 1987-03-03

Publications (2)

Publication Number Publication Date
EP0304445A1 EP0304445A1 (de) 1989-03-01
EP0304445B1 true EP0304445B1 (de) 1991-11-21

Family

ID=4195344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88901784A Expired - Lifetime EP0304445B1 (de) 1987-03-03 1988-03-03 Farbwerk, dessen farbaufstrich steuerbar ist

Country Status (6)

Country Link
US (1) US4987831A (ja)
EP (1) EP0304445B1 (ja)
JP (1) JPH01502502A (ja)
AT (1) ATE69580T1 (ja)
DE (1) DE3866313D1 (ja)
WO (1) WO1988006523A1 (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD285051A5 (de) * 1989-06-22 1990-12-05 Veb Kombinat Polygraph "Werner Lamberz" Leipzig,Dd Heberfarbwerk fuer rotationsdruckmaschinen
DE8912194U1 (de) * 1989-10-13 1989-11-23 MAN Roland Druckmaschinen AG, 6050 Offenbach Farbwerk
DE3942525A1 (de) * 1989-12-22 1991-06-27 Licentia Gmbh Druckwerk mit farbwerk
JP3013273B2 (ja) * 1992-01-10 2000-02-28 アイマー・プランニング株式会社 印刷機のインキ供給装置
DE19642399B4 (de) * 1995-10-14 2004-04-15 Techno Roll Co., Ltd., Izumi Druckfarbenwannenanordnung für eine Druckerpresse
US6035782A (en) * 1998-05-01 2000-03-14 Moore U.S.A. Inc. Selective flexographic printing with movable anilox roll
JP3008026B1 (ja) * 1998-11-09 2000-02-14 アイマー・プランニング株式会社 印刷機のインキ供給装置
CN100343049C (zh) * 2004-04-17 2007-10-17 汕头市东源轻工机械厂有限公司 胶印机传墨摆辊的摆动控制装置
JP2006272750A (ja) * 2005-03-29 2006-10-12 Aimaa Planning Kk インキ移し分割ローラユニットおよび印刷機
EP2998117A1 (en) * 2014-09-19 2016-03-23 KBA-NotaSys SA Inking apparatus of a printing press, printing press comprising the same and method of producing a vibrator roller
IT201700052229A1 (it) * 2017-05-15 2018-11-15 Graziano Rocchini Gruppo di inchiostrazione per stampatrice automatica per munizioni per arma da fuoco

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4402263A (en) * 1980-11-07 1983-09-06 Ryobi, Ltd. Automatic ink or water quantity adjusting device for printing machine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3116688A (en) * 1959-12-23 1964-01-07 Koppers Co Inc Ink fountain
DD104259A1 (ja) * 1973-05-08 1974-03-05
DE2924635A1 (de) * 1979-06-19 1981-01-15 Gerhard Werner Farbdosier-vorrichtung fuer buch- und offsetdruckmaschinen
JPS58203058A (ja) * 1982-05-21 1983-11-26 Toshiba Mach Co Ltd 印刷機のカセツト式インキ供給装置
US4607571A (en) * 1982-12-21 1986-08-26 Dai Nippon Insatsu Kabushiki Kaisha Method for adjusting an ink fountain in a printing press and ink fountains
DE3324448C1 (de) * 1983-07-07 1985-02-28 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbdosiereinrichtung für Buch- und Offsetdruckmaschinen
EP0131104A3 (de) * 1983-07-07 1986-07-23 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Farbdosiereinrichtung für Buch- und Offsetdruckmaschinen
DE3324445C2 (de) * 1983-07-07 1985-09-12 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbdosiervorrichtung an Buch- und Offsetdruckmaschinen
DE3342459C2 (de) * 1983-11-24 1986-03-13 Miller-Johannisberg Druckmaschinen Gmbh, 6200 Wiesbaden Von Film- auf Heberbetrieb umstellbares Farb- oder Auftragwerk für Rotations-Offset-Druckmaschinen
DE3344778C1 (de) * 1983-12-10 1985-04-11 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbdosiervorrichtung für das Farbwerk einer Durckmaschine
DE3543444A1 (de) * 1985-03-21 1986-10-30 Felix Corippo Brunner Verfahren und regelvorrichtung zur erzielung eines gleichfoermigen druckresultats an einer autotypisch arbeitenden mehrfarbendruckmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4402263A (en) * 1980-11-07 1983-09-06 Ryobi, Ltd. Automatic ink or water quantity adjusting device for printing machine

Also Published As

Publication number Publication date
EP0304445A1 (de) 1989-03-01
ATE69580T1 (de) 1991-12-15
JPH01502502A (ja) 1989-08-31
DE3866313D1 (de) 1992-01-02
WO1988006523A1 (en) 1988-09-07
US4987831A (en) 1991-01-29

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