EP0094320A1 - Farbwerk und -verfahren für Druckmaschinen - Google Patents

Farbwerk und -verfahren für Druckmaschinen Download PDF

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Publication number
EP0094320A1
EP0094320A1 EP83400946A EP83400946A EP0094320A1 EP 0094320 A1 EP0094320 A1 EP 0094320A1 EP 83400946 A EP83400946 A EP 83400946A EP 83400946 A EP83400946 A EP 83400946A EP 0094320 A1 EP0094320 A1 EP 0094320A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
ink
contact
feed cylinder
layer
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
EP83400946A
Other languages
English (en)
French (fr)
Other versions
EP0094320B1 (de
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT83400946T priority Critical patent/ATE31899T1/de
Publication of EP0094320A1 publication Critical patent/EP0094320A1/de
Application granted granted Critical
Publication of EP0094320B1 publication Critical patent/EP0094320B1/de
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
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • 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
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor

Definitions

  • the invention relates to the inking of printing machines with fatty ink.
  • the main problem posed by inking an offset or letterpress press consists in regularly depositing, from a substantial mass of fatty ink, a layer of a few microns thick uniformly distributed over the printing parts of 'a printing cylinder. The ink thus deposited on this cylinder is then transferred to the paper, either directly in the case of typography, or indirectly, via a cylinder covered with a rubberized sheet called a blanket in the case of offset. .
  • the quantity of ink released at the right of each screw must correspond to the ink consumption taken by each transverse zone of the paper. For example, if the print has several strips printed in the longitudinal direction and separated transversely by spaces which must remain blank, the inkwell adjustment screws must be tightened in line with the white areas and more or less open in line with the areas printed, according to the color intensity of these bands. From this ink scraped cylinder thus disposed are arranged in contact with each other a whole battery of rollers coated with rubber or plastic, some of which have a transverse movement back and forth to improve the distribution of the ink. This battery supplies two to four rubberized rollers called “touchers" which are in direct contact with the printing cylinder.
  • the wiper cylinder E is kept under pressure on the toucher T coated with a flexible material. These two cylinders rotate in the same direction of rotation so that the ink film included in the contact area m is entrained, in one direction by the cylinder E and in the other direction by the feeler T. This film is so somehow sheared in its thickness.
  • fig. 3 shows the variant corresponding to the first certificate of addition of the aforementioned patent.
  • the rolling cylinder L has been eliminated and the wiping cylinder E subs but to avoid the return of the ink coming from the reserve on the sheared layer, two rakes R1 and R2 have been arranged which clean the surface of the wiping cylinder E before it comes into contact with the layer spread on the toucher T.
  • FIG. 4a The device described in the last aforementioned patent is shown in FIG. 4a.
  • the wiper cylinder E has been reduced in diameter to increase the pressure on the ink film and will reduce its thickness.
  • This cylinder has thus become a rod, still referenced E, which is kept in pressure over its entire length against the toucher T by a V-groove formed in a cross-member Tr.
  • the doctor blades RI and R2 of the preceding device are replaced by the tangents x and y at the contact points of the rod E and its support Tr as shown in the diagram developed in FIG. 4b.
  • These contact lines are supposed to prevent the ink from passing and coming to be superimposed on the sheared layer of thickness e.
  • the thickness of the ink layer e is a few microns. A variation of 10% in this thickness results in a variation visible to the eye in the optical density of the printed product. It can therefore be seen that the lines x and y must be perfectly sealed or allow only a tiny film of ink of constant thickness to pass, a film which is superimposed on the film e of the sheared ink.
  • the rod E does not rotate any more and can be replaced by a cylindrical surface of radius r maintained in pressure on the toucher T.
  • the thickness of sheared ink e then only depends on two factors, namely the radius r and penetration, apart from the usual factors such as ink viscosity, hardness of the flexible coating and speed V. When the speed increases, the penetration must therefore be increased. The limit is determined by the degradation of the touchpad surface.
  • the invention like the state of the art, uses a flexible surface touch cylinder coated with a thin film of ink and depositing it on the printing form, this thin layer being determined in contact between this tot and a rigid cylinder at different peripheral speed
  • the ink au supplied at the point of contact while being carried by the surface of the touching cylinder, and partly withdrawn by the rigid cylinder, called for this wiper cylinder in the inventi on the contrary the ink is supplied in the form of a calibrated film carried by the surface of the rigid cylinder, called pc this supply cylinder, and is spread at the point of contact with the touching cylinder.
  • the reserve g of grass ink is not in contact with the touch cylinder T but on the contrary with a feed cylinder A, as it appears in particular in FIGS. 6, 7, 8 and 10.
  • This mass g is included between this feed cylinder A, a knife 1 and two cheeks 2-provided with notches in an arc of a circle to take support by interlocking transversely on the cylindrical surface of the cylinder feeder A, which is naturally a rigid cylinder, preferably metallic.
  • the knife 1 is secured to the cheeks 2 by means of micrometric screws 3 making it possible to adjust the distance d, visible in particular in FIG. 9, between the generator of cylinder A and the edge of knife 1 very precisely.
  • the knife 1 is made integral, transversely with respect to the axis of the feed cylinder A, and by means of the screws 3 and a cross 4, of the two cheeks 2 which bear on the cylinder A. In this way the distance d is independent of the inevitable run-out of this cylinder.
  • the knife 1 is sharpened in the manner of a cutting tool, as shown in FIG. 9, with however a small rectified dish of width a close to a tenth of a millimeter so that the edge thus obtained is perfectly straight.
  • the knife 1 cuts a slice of ink of thickness d, independent of the speed of the cylinder or of the characteristics of the ink.
  • the knife edge never being in contact with the cylinder, no wear can result.
  • the thickness d can vary from 10 to 60 microns depending on the precision of the micrometric screws.
  • the cylinder A is movable and kept under pressure on the touch switch T, coated in the usual manner with a layer 5 of flexible material.
  • the differential speed of the surfaces in contact at point 7 is obtained in this example by a rotation in the same direction of these two cylinders as represented by the arrows in FIG. 6.
  • a doctor blade 6 eliminates from the periphery of the toucher T the ink not used by the printer form F and deposits it on the feed cylinder A which brings it back into the reserve q.
  • this licking can cause small clumps of ink at 1 periphery of the toucher, which can be reduced in a known manner by having a cylinder 8 rolling at the periphery of the touching cylinder. .
  • this cylinder 8 may prove to be insufficient to eliminate these clumps and obtain a perfectly uniform layer.
  • an equalizing cylinder 9 which is driven in the direction reverse of the touching cylinder at a peripheral speed V 'close to the peripheral speed V of the touchor, either positively by gears, or by simple contact with the touchor.
  • this cylinder 9 is in contact with the feeder A. Its action does not in any way modify the balance of ink thicknesses defined by the above formula. As seen in fig.
  • the ink layer of thickness d arriving at the contact zone 10 between the equalizing cylinder 9 and the feed cylinder A is divided in two, one of which follows the curved path on the equalizing cylinder 9 to reach the contact zone 11 between the equalizing cylinder 9 and the toucher T, and the other follows the curved path, on the cylinder A, going from zone 10 to zone 7, then another curved path on the touching cylinder T going from the zone 7 to zone 11. Due to the speed differences between V ′ and v there is shearing of the ink layer d in zone 10, then rolling in zone 11. Thus, the entire thickness ea undergone an extremely effective lamination at 10, 7 and 11, thus avoiding any ink agglomeration at the periphery of the touchter.
  • this equalizing cylinder 9 can in a known manner be driven in an axial reciprocating movement to improve the regularity of the ink film and avoid the formation of possible streaks.
  • the equalizing cylinder 9 no longer rotates at the speed V 'close to V but at a speed close to v.
  • the spreading phenomenon which previously occurred in zone 7 (or 10) would occur in zone 11, and therefore it would no longer be necessary to have contact between the cylinders A and T in the zone 7.
  • the ink layer of calibrated thickness d fed at slow speed by the feed cylinder A can be spread over the touch cylinder T at a higher peripheral speed, ie directly in the case examined first , either indirectly in the case of the variant that we have just seen, without this going beyond the ambit of the invention.
  • the phenomenon of spreading of the ink layer on the touchpad involves, as we have seen, the product of the calibrated thickness d by the ratio v / V between the supply speed v and the speed of the touch V, but that this ratio must be taken in metric or absolute value. Indeed, the result is practically the same, that the two tangential velocities ve are in opposite directions as in the first example (this supposes rotations in the same direction) or in the same direction c in this last example (which supposes rotations contrary s).
  • the process according to the invention it can be seen that one is thus in control of the value of the thickness e which becomes independent of the speed of the machine, insofar as the ratio v / V remains constant, and independent of the viscosity of the ink and its temperature, contrary to the state of the art.
  • the apparatus is moreover insensitive to wear, due on the one hand to the absence of contact between knife 1 and the feed cylinder A, and on the other hand to a low rotation speed of cylinder A relative to the tou cheur T.
  • a relatively simple material makes it possible to obtain both great inking precision and high working speed compatible with industrial exploitation.
  • FIGS. 10 and 11 For the implementation according to the invention, it is possible to use a mounting shown in more detail in FIGS. 10 and 11.
  • the two cheeks 2 are independent and provided on their faces opposite a groove 12 which does not disengage outwards and in which is mounted each of the ends of the cross member 4 carrying 1 two screws 3 for micrometric adjustment of the knife 1, preferably with differential pitch.
  • This knife 1 is itself guided in parallel in these grooves 12 and mounted by means of balls 13 to allow a slight angular adaptation of each of the cheeks 2 relative to the knife 1.
  • Each of the cheeks 2 is supported on the cylinder A by a thicker part in which is cut the cylindrical notch exposed above, and this thick part ends in an oblique shoulder 14 on which comes into contact with a pusher 15 actuated by a spring 16 and sliding itself obliquely in a flange 17 carrying the bearing 18 for journalling the cylinder A, a dispositior. similar being provided at the other end of the cylinder.
  • the oblique thrust produced by the pushers 15 on the cheeks 2 produces both their tight application on the periphery of the cylinder A, and their mutual approximation until contact with the balls 13, the seal between the ends of the knife 1 and the cheeks being ensured by the nesting in the grooves 12 and by the functional force of application in the drive direction.
  • the two flanges 17 are integral with a cradle 19 oscillating around an axis 19a fixed in the frame 20.
  • the penetration of the cylinder A into the touchor T is ensured by a pushing device 21, constituted by a spring or preferably by a double-acting cylinder allowing pressurization and depressurization, and limited in amplitude by a stop screw 22.
  • the touching cylinder T rotating in the frame 2d in contact with the printing form F, is driven in the opposite direction and at the same tangential speed as the printing form F by means of gears 32 and 33.
  • From its shaft end 23 is preferably connected to a speed variator 24 making it possible to adjust the v / V ratio at will, and from this latter comes out a pulley 25 driving by a belt 26 a larger pulley 27 already providing a stage of reduction in the desired direction.
  • This pulley 27 drives a shaft 28 swiveling in a fixed bearing 29, which shaft is connected to the shaft end 30 of the feed cylinder A by means of an oldham constant velocity joint or the like tolerating the movements of the cradle 19.
  • doctor blade 6 and the equalizing cylinders 8 and 9 mounted on eccentrics to allow the pressure adjustment.
  • the invention could also be used to apply any thin film of a viscous liquid, such as paint, glue, or the like, to any surface in rotation or translation.
  • a viscous liquid such as paint, glue, or the like

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Dot-Matrix Printers And Others (AREA)
EP83400946A 1982-05-10 1983-05-10 Farbwerk und -verfahren für Druckmaschinen Expired EP0094320B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83400946T ATE31899T1 (de) 1982-05-10 1983-05-10 Farbwerk und -verfahren fuer druckmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8208107A FR2526370B1 (fr) 1982-05-10 1982-05-10 Procede et dispositif d'encrage pour machine d'imprimerie
FR8208107 1982-05-10

Publications (2)

Publication Number Publication Date
EP0094320A1 true EP0094320A1 (de) 1983-11-16
EP0094320B1 EP0094320B1 (de) 1988-01-13

Family

ID=9273875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400946A Expired EP0094320B1 (de) 1982-05-10 1983-05-10 Farbwerk und -verfahren für Druckmaschinen

Country Status (7)

Country Link
US (1) US4542693A (de)
EP (1) EP0094320B1 (de)
JP (1) JPS59500808A (de)
AT (1) ATE31899T1 (de)
DE (1) DE3375289D1 (de)
FR (1) FR2526370B1 (de)
WO (1) WO1983004003A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2590205A1 (fr) * 1985-11-21 1987-05-22 Seailles Tison Sa Dispositif pour l'encrage d'une forme d'impression rotative a partir d'une masse compacte d'encre a viscosite elevee
EP0435817A2 (de) * 1989-12-12 1991-07-03 Fankhauser, Peter Farbkasten für eine Druckmaschine

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300303C2 (de) * 1983-01-07 1985-03-14 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Kopftrommel mit um eine Achse rotierenden Video-Aufzeichnungs- und Wiedergabeköpfen
JPS6440369A (en) * 1987-08-06 1989-02-10 Kyokuto Int Printing method and device
US5078063A (en) * 1990-12-19 1992-01-07 Ag Communication Systems Corporation Precision mechanical squeegee holding assembly
DE4239793A1 (de) * 1992-01-03 1993-07-08 Noelle Gmbh
JPH05229101A (ja) * 1992-02-20 1993-09-07 Manabu Fukuda インキ装置
GB2278574A (en) * 1993-06-01 1994-12-07 David Edward Mcmanamon Ink transfer means for printing machine
BR9508278A (pt) * 1994-07-14 1997-10-28 Koening & Bauer Albert Ag Unidade de impressão com um sistema curto de tintagem em uma impressora rotativa para impressão direta por meio de uma placa "sem água" de impressão planográfica
DE19535266A1 (de) * 1995-09-22 1997-04-03 Roland Man Druckmasch Kurzfarbwerk
US6895861B2 (en) 2003-07-11 2005-05-24 James F. Price Keyless inking systems and methods using subtractive and clean-up rollers
US6672211B2 (en) * 1999-03-03 2004-01-06 James F. Price Inking systems for printing presses
EP1159136B1 (de) 1999-03-03 2005-05-18 James F. Price Schraubenloses farbwerk für eine druckmaschine
KR100649722B1 (ko) * 2000-04-21 2006-11-24 엘지.필립스 엘시디 주식회사 일렉트로루미네센스 표시소자의 패터닝장치 및 이를이용한 패터닝방법
JP2001346031A (ja) * 2000-06-05 2001-12-14 Fuji Photo Film Co Ltd 画像合成方法及び装置
JP2003154630A (ja) * 2001-08-06 2003-05-27 Fuji Photo Film Co Ltd インキ供給装置及び印刷機
EP1764216A1 (de) * 2005-09-16 2007-03-21 Kba-Giori S.A. Vorrichtung zur Beschichtung eines Zylinders, insbesondere eines Wischzylinders einer Tiefdruckmaschine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB544480A (en) * 1940-08-07 1942-04-15 American Bank Note Co Inking mechanisms for rotary steel plate printing machines
DE1162852B (de) * 1955-12-29 1964-02-13 Harris Intertype Corp Farbkasten fuer Druckmaschinen
US3709147A (en) * 1970-12-03 1973-01-09 W Granger Ink transfer cylinder mounting with adjustable drive clutch
US4058058A (en) * 1976-02-26 1977-11-15 George Hantscho Company, Inc. Ink fountain for printing presses
GB1525805A (en) * 1976-05-14 1978-09-20 Rotobind Ltd Printing apparatus and method
US4127067A (en) * 1974-02-15 1978-11-28 Dahlgren Harold P Method for inking printing plates
EP0017844A1 (de) * 1979-04-21 1980-10-29 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Farbwerk für eine Druckmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE639293C (de) * 1936-12-02 Richard Lehmann Farbwerk fuer Druckmaschinen
GB871786A (en) * 1957-01-18 1961-06-28 Maschf Augsburg Nuernberg Ag Damping apparatus for rotary printing presses
US3026795A (en) * 1957-01-18 1962-03-27 Maschf Augsburg Nuernberg Ag Dampening apparatus for rotary printing presses
FR1344700A (fr) * 1963-01-16 1963-11-29 Philips Nv Procédé et dispositif pour l'examen de corps semi-conducteurs
GB1203848A (en) * 1967-09-18 1970-09-03 Albert Schnellpressen Improvements in or relating to ink duct assemblies for printing presses
US3585932A (en) * 1968-06-07 1971-06-22 Wallace H Granger Automatic inking system for rotary newspaper printing press
GB1267947A (en) * 1969-10-30 1972-03-22 Metal Box Co Ltd Improvements in inking apparatus for printing machines
US4041864A (en) * 1972-05-09 1977-08-16 Dahlgren Manufacturing Company Method and apparatus for inking printing plates
CH573812A5 (de) * 1973-08-28 1976-03-31 Texogesa Sa
US3978788A (en) * 1975-05-16 1976-09-07 Roland Offsetmaschinenfabrik Faber & Schleicher Ag Ink metering assembly for printing press

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB544480A (en) * 1940-08-07 1942-04-15 American Bank Note Co Inking mechanisms for rotary steel plate printing machines
DE1162852B (de) * 1955-12-29 1964-02-13 Harris Intertype Corp Farbkasten fuer Druckmaschinen
US3709147A (en) * 1970-12-03 1973-01-09 W Granger Ink transfer cylinder mounting with adjustable drive clutch
US4127067A (en) * 1974-02-15 1978-11-28 Dahlgren Harold P Method for inking printing plates
US4058058A (en) * 1976-02-26 1977-11-15 George Hantscho Company, Inc. Ink fountain for printing presses
GB1525805A (en) * 1976-05-14 1978-09-20 Rotobind Ltd Printing apparatus and method
EP0017844A1 (de) * 1979-04-21 1980-10-29 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Farbwerk für eine Druckmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2590205A1 (fr) * 1985-11-21 1987-05-22 Seailles Tison Sa Dispositif pour l'encrage d'une forme d'impression rotative a partir d'une masse compacte d'encre a viscosite elevee
EP0225253A1 (de) * 1985-11-21 1987-06-10 Seailles Et Tison Sa. Vorrichtung zur Einfärbung einer Rotationsdruckplatte mittels einer kompakten hochviskosen Farbmasse
EP0435817A2 (de) * 1989-12-12 1991-07-03 Fankhauser, Peter Farbkasten für eine Druckmaschine
EP0435817A3 (en) * 1989-12-12 1991-10-23 Fankhauser, Peter Ink duct for a printing machine

Also Published As

Publication number Publication date
ATE31899T1 (de) 1988-01-15
JPS59500808A (ja) 1984-05-10
DE3375289D1 (en) 1988-02-18
FR2526370A1 (fr) 1983-11-10
US4542693A (en) 1985-09-24
FR2526370B1 (fr) 1986-01-17
EP0094320B1 (de) 1988-01-13
WO1983004003A1 (fr) 1983-11-24

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