EP0225253A1 - Vorrichtung zur Einfärbung einer Rotationsdruckplatte mittels einer kompakten hochviskosen Farbmasse - Google Patents

Vorrichtung zur Einfärbung einer Rotationsdruckplatte mittels einer kompakten hochviskosen Farbmasse Download PDF

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Publication number
EP0225253A1
EP0225253A1 EP86402594A EP86402594A EP0225253A1 EP 0225253 A1 EP0225253 A1 EP 0225253A1 EP 86402594 A EP86402594 A EP 86402594A EP 86402594 A EP86402594 A EP 86402594A EP 0225253 A1 EP0225253 A1 EP 0225253A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
ink
contact
speed
inking
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.)
Withdrawn
Application number
EP86402594A
Other languages
English (en)
French (fr)
Inventor
Georges Mourrellon
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.)
SEAILLES ET TISON SA
SEAILLES AND TISON
Original Assignee
SEAILLES ET TISON SA
SEAILLES AND TISON
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 SEAILLES ET TISON SA, SEAILLES AND TISON filed Critical SEAILLES ET TISON SA
Publication of EP0225253A1 publication Critical patent/EP0225253A1/de
Withdrawn legal-status Critical Current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
    • B41F31/10—Applications of feed or duct 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
    • B41F31/06—Troughs or like reservoirs with immersed or partly immersed, rollers or cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/20—Ink-removing or collecting devices

Definitions

  • the invention relates to the inking of a rotary printing form from a compact mass of a high viscosity ink.
  • high viscosity denotes a viscosity at least equal to 100 poises, for example a viscosity in the range 250-350 poises. in contrast to inks whose viscosity is close to that of water.
  • the present invention aims to provide a device with specific advantages.
  • a first object of the invention is to provide an embodiment such that dust and impurities, for example lint from the paper being printed, cannot accumulate in the ink mass and disturb the deposition of the homogeneous ink film on the feed cylinder.
  • Another object of the invention is to provide an embodiment such that excessive heating of the ink on the touch cylinder, in particular during inking at high speed, is avoided.
  • the feed cylinder is in direct or indirect contact with the touch cylinder.
  • this contact is indirect: the device comprises at least a pair of two intermediate cylinders between the feed cylinder and the touch cylinder, namely a first intermediate cylinder, called the take-up cylinder, furnished with a flexible material is in contact with the feed cylinder, means for rotating the take-up cylinder in the opposite direction and with the same speed as the feed cylinder. and a second intermediate cylinder (called “inking table”) with a rigid and smooth surface and in contact with the take-up cylinder and with the touching cylinder, and means for rotating the inking table in the opposite direction but with the same speed than the touch cylinder.
  • a first intermediate cylinder called the take-up cylinder
  • a speed output Ei v is schematized an output E 2 of speed V connected to the shafts of the corresponding cylinders and a speed variator E 3 which makes it possible to vary v, V or the ratio v / V.
  • the doctor blade 3 is made of a thin and hard elastic material (0.1 to 0.2 mm) (rolled steel) to be able to adapt to the imperfections of straightness of the generatrices of the flexible cylinder To.
  • a chamfer practiced over its entire length, is tangent to the cylinder To when the doctor blade is under pressure, so the value can vary from 5 to 20 bars.
  • An inclination of the doctor blade with respect to the tangent contact plane of 30 ° has given satisfactory results.
  • the angle of the dihedral constituted by the three axes of the cylinders Pr, A and C must be close to 90 ° so as to prevent the pressure of the ink film comprised between the cylinders A and Pr from disturbing, by bending, the interval d between cylinders C and A which must remain precise, adjustable and independent of any mechanical constraints.
  • This interval is for example from 20 to 100 microns; it will be lower than 20 microns in the case of an ink having a viscosity of 100 poises and higher than 100 microns in the case of an ink having a viscosity of 350 poises.
  • the inking table Ta can, in certain cases and to satisfy certain requirements of quality of the printing, be animated by an alternating movement back and forth longitudinal called "stroll" according to known methods.
  • control and pressurizing devices F of the cylinders are also well known to specialists.
  • the ink supply means consist of a knife D, the edge of which was at a distance d, adjusted by a micrometric screw assembly, from the supply cylinder.
  • the dust and other particles which could fall into the ink mass E tended to accumulate against the edge of the knife while in the device of the present invention they are "swallowed" between the two cylinders A and C without causing by their accumulation, visible streaks on the impression obtained: moreover, the distance d and, consequently, the thickness of ink obtained on the periphery of each of the two cylinders A and C and downstream of their contact area is perfectly controlled, as in the previous device, with the following advantage, however:
  • the feed cylinder is in direct contact with the touch cylinder.
  • this power is fully transformed into heat.
  • the speed of the coated cylinder is very high since it is equal to that of the printer form.
  • the penetration 8 of the rigid cylinder in the flexible coating is high, to obtain a residual layer e as low as possible.
  • FIG. 2a represents the deformation of the flexible material of the touching cylinder under the pressure of the rigid feeding cylinder as well as the shearing of the ink layer included between the two cylinders, in the case of the prior device.
  • FIG. 2b represents this same deformation in the case of the improvement presented.
  • the cylinder Pr coated with a flexible material rotates at slow speed (3 to 5 times slower than in the previous case), the penetration 8 is 4 to 5 times less and, machine. the ink is not sheared but simply laminated, the contact areas going in the same direction. This results in much less heat generation and, therefore, an acceptable ink temperature.
  • Figures 3 and 4 show that cleaning the printing unit is greatly facilitated.
  • the basin 1, made of light sheet metal, is easily retractable without removing the inkwell and does not require precise positioning.
  • Equations (1) and (2) give the value of e
  • Formula (3) is only rigorous in steady state.
  • V and v increase simultaneously while maintaining, by construction, the same ratio p.
  • the pressure of the ink film included in the contact area N increases and its thickness increases, but this variation in thickness is relatively small.
  • hard coatings for example from 60 to 80 shore.
  • a useful thickness e 4 microns corresponding to a thickness of ink on the paper 1 micron, in the case of offset printing .
  • the invention is not limited to the embodiment shown in FIG. 3.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP86402594A 1985-11-21 1986-11-21 Vorrichtung zur Einfärbung einer Rotationsdruckplatte mittels einer kompakten hochviskosen Farbmasse Withdrawn EP0225253A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8517248 1985-11-21
FR8517248A FR2590205A1 (fr) 1985-11-21 1985-11-21 Dispositif pour l'encrage d'une forme d'impression rotative a partir d'une masse compacte d'encre a viscosite elevee

Publications (1)

Publication Number Publication Date
EP0225253A1 true EP0225253A1 (de) 1987-06-10

Family

ID=9325051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86402594A Withdrawn EP0225253A1 (de) 1985-11-21 1986-11-21 Vorrichtung zur Einfärbung einer Rotationsdruckplatte mittels einer kompakten hochviskosen Farbmasse

Country Status (2)

Country Link
EP (1) EP0225253A1 (de)
FR (1) FR2590205A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0279295A3 (en) * 1987-02-19 1990-02-14 Albert-Frankenthal Ag Inking unit
EP0339159A3 (en) * 1988-04-26 1990-08-22 Akyama Insatsuki Seizo Kk Varnish coating mechanism
EP0407708A3 (en) * 1989-07-13 1991-07-17 Ferd. Rueesch Ag. Short inking device without inking zones
EP0428888A3 (en) * 1989-11-18 1991-09-11 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Inking unit with zonal dosage of the ink quantity
EP0557635A1 (de) * 1992-02-20 1993-09-01 Manabu Fukuda Anordnung zum Einfärben
DE4431464A1 (de) * 1994-09-03 1996-03-07 Koenig & Bauer Albert Ag Kurzfarbwerk

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1230020A (de) * 1967-06-30 1971-04-28
EP0064270A1 (de) * 1981-05-02 1982-11-10 Albert-Frankenthal AG Farbwerk
EP0094320A1 (de) * 1982-05-10 1983-11-16 Georges Mourrellon Farbwerk und -verfahren für Druckmaschinen
EP0149841A2 (de) * 1984-01-20 1985-07-31 Heidelberger Druckmaschinen Aktiengesellschaft Verfahren und Vorrichtung zur Einfärbung der Platte eines Plattenzylinders von Rotationsdruckmaschinen
EP0071108B1 (de) * 1981-07-31 1987-06-03 Dahlgren Manufacturing Company Verfahren und Vorrichtung zum Auftragen von Farbe und Feuchtmittel auf eine Druckplatte

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2920152A1 (de) * 1979-05-18 1980-11-27 Maschf Augsburg Nuernberg Ag Farbwerk fuer eine druckmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1230020A (de) * 1967-06-30 1971-04-28
EP0064270A1 (de) * 1981-05-02 1982-11-10 Albert-Frankenthal AG Farbwerk
EP0071108B1 (de) * 1981-07-31 1987-06-03 Dahlgren Manufacturing Company Verfahren und Vorrichtung zum Auftragen von Farbe und Feuchtmittel auf eine Druckplatte
EP0094320A1 (de) * 1982-05-10 1983-11-16 Georges Mourrellon Farbwerk und -verfahren für Druckmaschinen
EP0149841A2 (de) * 1984-01-20 1985-07-31 Heidelberger Druckmaschinen Aktiengesellschaft Verfahren und Vorrichtung zur Einfärbung der Platte eines Plattenzylinders von Rotationsdruckmaschinen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0279295A3 (en) * 1987-02-19 1990-02-14 Albert-Frankenthal Ag Inking unit
EP0339159A3 (en) * 1988-04-26 1990-08-22 Akyama Insatsuki Seizo Kk Varnish coating mechanism
EP0407708A3 (en) * 1989-07-13 1991-07-17 Ferd. Rueesch Ag. Short inking device without inking zones
EP0428888A3 (en) * 1989-11-18 1991-09-11 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Inking unit with zonal dosage of the ink quantity
EP0557635A1 (de) * 1992-02-20 1993-09-01 Manabu Fukuda Anordnung zum Einfärben
US5293819A (en) * 1992-02-20 1994-03-15 Manabu Fukuda Inking arrangement
DE4431464A1 (de) * 1994-09-03 1996-03-07 Koenig & Bauer Albert Ag Kurzfarbwerk

Also Published As

Publication number Publication date
FR2590205A1 (fr) 1987-05-22

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Inventor name: MOURRELLON, GEORGES