EP1997632A1 - Druckmaschine und entsprechendes Verfahren - Google Patents

Druckmaschine und entsprechendes Verfahren Download PDF

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Publication number
EP1997632A1
EP1997632A1 EP20080104160 EP08104160A EP1997632A1 EP 1997632 A1 EP1997632 A1 EP 1997632A1 EP 20080104160 EP20080104160 EP 20080104160 EP 08104160 A EP08104160 A EP 08104160A EP 1997632 A1 EP1997632 A1 EP 1997632A1
Authority
EP
European Patent Office
Prior art keywords
traction
printing
machine according
printing machine
printed
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.)
Ceased
Application number
EP20080104160
Other languages
English (en)
French (fr)
Inventor
Hervé Chaize
Christophe Noiret
Nicolas Rousseau
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.)
Goss International Montataire SA
Original Assignee
Goss International Montataire SA
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 Goss International Montataire SA filed Critical Goss International Montataire SA
Publication of EP1997632A1 publication Critical patent/EP1997632A1/de
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/06—Powdering devices, e.g. for preventing set-off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F22/00—Means preventing smudging of machine parts or printed articles

Definitions

  • Patent application is known FR-A-2,888,527 a rotary printing machine, which comprises at least one printing unit provided with a pair of printing rolls, and a cutting device adapted to cut the printed web by the printing unit.
  • This printing machine comprises a traction device adapted to apply a predetermined tension to the printed strip downstream of the last printing unit and upstream of a strip cutting device of the strip.
  • the present invention aims to improve the quality of printed products that can be produced by the printing machine, and this with simple means.
  • the subject of the invention is a printing machine of the type indicated, characterized in that it comprises a powdering device adapted to deposit powder on at least one of the two faces of the printed strip. by the printing unit.
  • FIG. 1 On the figure 1 is shown a rotary printing machine according to the invention, designated by the general reference 2.
  • the printing machine 2 comprises a unwinder 4, four printing units 6, a traction device 8 and a cutting and stacking device 10.
  • the printing machine 2 further comprises a tape gripper 100 and a powdering device 102.
  • the printing machine 2 could comprise any number of printing units 6, in theory, from one to n.
  • Each printing unit 6 comprises an ink device 6A which is provided with an ink tank 7 comprising ink 7A intended for printing on the strip 12.
  • the ink 7A used in the context of the invention will be explained below.
  • Each ink device 6A further comprises an ink transfer roller 7B for transferring the ink 7A to printing rolls 15 (see below).
  • the unwinder 4 is adapted to unwind a continuous printing tape 12.
  • the print tape 12 is a coated paper web.
  • Coated paper is a paper that includes a coating layer, for example, kaolin or chalk, improving the mechanical or optical properties of the paper. This paper makes it possible to obtain a printed product of high quality. Alternatively, it is possible that the tape to be printed is an uncoated paper tape.
  • the printing machine 2 defines a print path of the web 12 between the unwinder 4, through the printing units 6, the web gripper 100, the dusting device 102, and the pulling device 8 , up to the cutting and stacking device 10.
  • the printing units 6 comprise printing rollers 15 which are adapted to print on the web 12.
  • the cutting and stacking device 10 is adapted to cut the printing tape 12 into individual sheets 104.
  • the cutting and stacking device 10 comprises a cutting blade 10A.
  • the cutting and stacking device 10 is also adapted to produce a stack of individual sheets 104 cut by the blade 10A.
  • the traction device 8 is situated downstream of the printing unit 6 furthest downstream and upstream of the cutting and stacking device 10. This traction device 8 is adapted to apply a determined mechanical tension on the strip 12 exiting the printing unit 6 further downstream.
  • the printing machine 2 is adapted to transport the printed web 12 in free suspension and in the ambient air all the way between the printing unit 6 furthest downstream and the traction device 8, to the the exception of the tape gripper 100 and the dusting device 102.
  • the printing machine 2 is also adapted to transport the printed tape 12 to the ambient air all the way between the traction device 8 and the printer. cutting and stacking device 10.
  • the printing machine 2 has no dryer and has a small footprint.
  • the printing machine 2 differs from the printing machine 2 shown on the figure 1 by the fact that between the gripping device 100 and the traction device 8 is arranged an infrared ray dryer 14 through which the printed strip 12 is conducted.
  • the infrared ray dryer 14 may be replaced by another drying device by heating the strip, such as a hot air dryer.
  • the dryer 14 has reduced dimensions compared with the prior art driers.
  • the tape gripper 100 is adapted to detect a break in the paper web 12 and to grip the free end of the paper web 12 in this case.
  • the tape gripper 100 has appropriate grippers 100A.
  • the tape capture device 100 is omitted.
  • the powdering device 102 is adapted to deposit drying powder on each of the faces of the printed strip 12. It can deposit drying powder on one or both sides of the printed strip 12.
  • the powdering device 102 comprises a reservoir 106 containing powder 108 and a dusting head 110 connected to the powder reservoir 106 via a pipe 112.
  • the dusting device comprises a reservoir 106, a dusting head 110 and a duct 112 for each of the faces of the paper strip 12.
  • the powdering device 102 is adapted to apply the drying powder to the paper web 12 continuously, preferably continuously continuously over a length which corresponds to at least twice the length of a section 16 (see below). after).
  • the powdering device 102 can deposit drying powder over a length that corresponds to the length of the strip 12 of a task.
  • the powdering device 102 has a simple structure and does not require clocked control means.
  • the powder 108 used for the powdering of the strip is preferably a powder containing silicone.
  • the printed strip 12 consists of a succession of strip sections 16, each of which is the length of a sheet cut by the cutting and stacking device 10. Each section 16 furthermore comprises an image 18 printed on both sides by the printing rolls 15 of the printing units 6. Moreover, each section 16 comprises an unprinted zone, which does not contain any ink.
  • the traction device 8 comprises two traction rollers 20, 22 which are rotated about their respective axes X-X, Y-Y. Each of the pull rollers 20, 22 comes into contact with one of the surfaces of the printed web 12. The pull rollers 20, 22 are driven in opposite directions, and their traction surface moves, at the location of contact with the strip 12, in the same direction S as the printed strip 12. Each of the traction rollers 20, 22 has an outer surface whose circumference is identical to the length of the strip section 16, which reduces the marking. In a variant, the circumference is identical to an integer multiple of the length of the section 16.
  • each pull roller 20, 22 is made of an ink repellent material used to print the images 18.
  • the pull rollers 20, 22 include, for example, a hydrophilic surface.
  • One of the two rolls is coated with an elastomer.
  • the generatrix of contact of the two rollers makes it possible to pinch to pull the paper strip 12.
  • the surfaces of the two traction rollers 20, 22 may for example comprise a coating of a silicone-based compound.
  • the two traction rollers 20, 22 are arranged facing each other, so that the contact line of the traction roller 20 with the belt 12 and the line of contact of the traction roller 22 with the belt 12 are located in vis-à-vis.
  • the circumferential speed of the traction rollers 20, 22 is slightly greater than the circumferential speed of the printing rollers of the printing unit 6 furthest downstream, so that the printed band 12 is maintained under a traction and therefore a predetermined mechanical tension between the printing unit 6 and the traction device 8.
  • the traction device 8 makes it possible to print a strip of paper and to receive it in a cutting and stacking device 10, such as a flat exit, without drying the strip of paper 12 by evaporation of the solvents of the ink.
  • the image 18 is printed by the ink 7A contained in the ink tank 7.
  • the ink 7A is a secative ink, or a waterless ink ("waterless"), or a two-component ink .
  • the drying of the secant inks is the combination of a first phenomenon called “penetration into the support” and a second phenomenon called "the oxidation polymerization of varnishes consisting of oils and resins".
  • the heat-set inks dry by evaporation of the mineral solvents mixed with the resin.
  • the UV inks dry by polymerization of the resin under the effect of ultraviolet radiation.
  • the waterless inks are used with specific printing plates to define non-printing areas without using the conventional lithographic process based on the rejection of the greasy ink by a previously moistened hydrophilic surface.
  • the use of these inks can be considered in the same way as the conventional secundant inks previously seen and can dispense with a dryer, or design less cumbersome.
  • the figure 4 shows a detail of a second embodiment of a traction device 8, which differs from the embodiment of the figure 3 by what follows. Similar elements bear the same references.
  • the traction module 8 further comprises two cleaning devices 30, 32. Thus, the quality of the image 18 on the printed tape 12 is further improved.
  • the cleaning devices 30, 32 comprise cleaning bars 34, 36 in permanent contact with the traction surface of the rollers 20, 22.
  • the cleaning bars 34, 36 may comprise a rotating brush placed in contact with each other. the surface to be cleaned or a strip of tissue brought into contact by a mechanical member. In both cases, the cleaning is facilitated by the action of a solvent.
  • FIG. 5 On the figure 5 is shown a third embodiment of the traction device 8, in side view. This embodiment differs from the second embodiment by the following.
  • Both pull rollers 20, 22 have ink-repelling surfaces, such as a coating of a silicone-based compound.
  • the cleaning device 30 comprises a cleaning roller 38 comprising a surface of an ink-attracting material which is in contact with the surface of the traction roller 20.
  • the cleaning roller 38 is, for example, coated with a porous ceramic intended for cleaning. to be impregnated with ink and thus has surface properties favorable to the transfer of the ink. This technique is used in particular to make inkwell rolls.
  • the cleaning device 30 further comprises a squeegee 42 which is in permanent contact with the surface of the cleaning roller 38 and which conveys the ink picked up by the roll 38 to a recovery tank 46.
  • the cleaning device 32 comprises a cleaning roller 40 comprising a surface of an ink attracting material, such as a coating of a porous ceramic to be impregnated with ink and thus having surface properties favorable to the transfer of ink. ink.
  • the surface of the roller 40 is in contact with the surface of the pulling roll 22.
  • the cleaning device 32 further comprises a doctor blade 44 which is in permanent contact with the surface of the cleaning roll 40 and which conveys the ink picked up by the rollers 40 to a recovery tank 48.
  • the figure 6 shows a cross section of a traction roller of a fourth embodiment of a traction module 8 according to the invention.
  • This traction module 8 comprises a traction roller 22 which is provided with a porous wall 60 so as to define a porous traction surface.
  • the pores of the wall 60 are open cells, so that a liquid 62 disposed inside the roller 22 can pass through the wall 60 and come into contact with the printed tape 12.
  • the liquid 62 is for example a mixture of water and silicone.
  • the traction roller 22 further comprises a rotary joint 63 comprising a central liquid feed 64 which opens into the interior of the traction roller 22.
  • the feed 64 is arranged coaxially with the axis YY of the roller traction 22.
  • This traction device 8 comprises two blanket rollers 70 which are applied on both sides of the printed band 12 and which are offset from one another in the direction of travel of the band 12.
  • the traction device 8 further comprises eight toothed rollers 72 connected in pairs by an axis 73.
  • the traction device 8 is provided with four belts or chains 74, each of which is guided around two toothed rollers 72 arranged on one side only.
  • the two belts 74 on one side of the printed web 12 are connected by pull bars 76, which are arranged at a mutual distance on the belt 74 which corresponds to the length of the strip section 16.
  • the traction bars 76 are adapted to be applied on both sides of the strip 12, vis-à-vis and clamp the strip between them. Thus they are adapted to exert traction on the band 12.
  • the bars 76 are driven in synchronism with the strip 12 so that they only apply to the unprinted area of the strip 12.
  • the surface coming into contact with the strip 12 of the strip 76 is preferably elastomeric.
  • the figure 9 represents a part of a variant of a printing machine, comprising an accompanying device 80 disposed between the printing unit 6 furthest downstream and the cutting and stacking device 10.
  • the accompanying device 80 is arranged upstream of the traction device 8.
  • This accompanying device 80 comprises two support rollers 82 arranged on one side and the other of the band 12.
  • the support rollers 82 are hollow and comprise a cylindrical wall 83 with an annular section.
  • the wall 83 forms an outer support surface 84.
  • the accompanying device 80 comprises means for creating an air cushion between the support surface 84 and the printed strip 12.
  • These air cushion creation means comprise on the one hand, openings 86 passing through the wall 83 of the roller 82.
  • These openings 86 are arranged, in cross-section, in a secant manner with respect to the own axis AA, BB of the roller 82.
  • the openings 86 have a component directed in the direction of displacement S of the band 12, and this in the direction radially outwards with respect to the own axis AA, BB of the roller 82 considered.
  • the means for creating an airbag comprise two sealing walls 88 disposed inside each support roller 82, these walls 88 applying on the one hand in an airtight manner against the inner surface 89 of the wall 83, and on the other hand to the axis
  • a pressurized air inlet 90 is connected to the chamber 92 defined by the walls 83 and 88.
  • the support rollers 82 are rotated so that their circumference at the location near the printed band moves in the S direction of the printed web path 12.
  • the opening 86 which is at a given instant in communication with the chamber 92 defined by the walls 83 and 88, allows the air in the chamber 92 to escape, and to create an air cushion between the outer surface 84 and the printed web 12, which guides the printed web 12.
  • This accompanying device 80 has a single sealing wall 88 per roll 82 which extends around the support roll 82 over substantially its entire circumference, with the exception of a portion facing the printed web 12. No wall The seal extends within the roller 82. This embodiment is easy to manufacture.
  • At least one of the traction rollers 20, 22 has openings in its surrounding surface, and the traction device 8 is provided with a vacuum device adapted to create a vacuum in these openings. This helps guide the band 12.
  • the traction elements comprise traction surfaces which come into contact only with the unprinted zone of the strip 12.
  • the traction elements may comprise a traction roller which applies on an unprinted side area of the strip.
  • the dusting device 102 is disposed downstream of the traction device 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Treatment Of Fiber Materials (AREA)
EP20080104160 2007-06-01 2008-05-29 Druckmaschine und entsprechendes Verfahren Ceased EP1997632A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0755414A FR2916676B1 (fr) 2007-06-01 2007-06-01 Machine d'impression et procede correspondant.

Publications (1)

Publication Number Publication Date
EP1997632A1 true EP1997632A1 (de) 2008-12-03

Family

ID=38915620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080104160 Ceased EP1997632A1 (de) 2007-06-01 2008-05-29 Druckmaschine und entsprechendes Verfahren

Country Status (5)

Country Link
US (1) US20080307989A1 (de)
EP (1) EP1997632A1 (de)
CN (1) CN101815620A (de)
FR (1) FR2916676B1 (de)
WO (1) WO2008152309A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2909031B1 (fr) * 2006-11-24 2011-03-04 Goss Int Montataire Sa Machine d'impression et procede correspondant.
US20110297023A1 (en) * 2010-06-04 2011-12-08 Goss International Americas, Inc. Apparatus and method for producing newspapers from a printed web
US9114604B2 (en) * 2012-06-13 2015-08-25 Xerox Corporation Method and apparatus for applying a release agent to a substrate having a print image
CN107599647A (zh) * 2016-03-19 2018-01-19 国网山东省电力公司莱州市供电公司 多功能打印机工具箱
CN107443877A (zh) * 2017-08-28 2017-12-08 南京泛太克文化产业发展有限公司 相纸印字断张机及相纸生产装置
CN112791970B (zh) * 2020-12-22 2022-08-09 杭州天地印刷有限公司 一种高速自动检验机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2605773A1 (de) * 1976-02-13 1977-08-18 Maschf Augsburg Nuernberg Ag Rollenoffsetmaschine
DE3229035C1 (de) * 1982-08-04 1984-01-05 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Rollen-Offsetrotationsdruckmaschine mit einer Vorrichtung zum Aufbringen von Puder
DE4325725A1 (de) * 1993-07-30 1995-02-02 Cleanpack Gmbh Innovative Verp Verfahren und Vorrichtung zum Bedrucken von Folienbahnen im Rollen-Offsetdruck
DE10207184A1 (de) * 2002-02-21 2003-09-04 Irs Lab Ag Pfaeffikon Offsetdruckmaschine
FR2888527A1 (fr) 2005-07-18 2007-01-19 Goss Int Montataire Sa Machine d'impression et procede correspondant

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023123A (en) * 1958-12-02 1962-02-27 Burroughs Corp Forming stripes of magnetic material
US4084501A (en) * 1976-06-21 1978-04-18 The Meyercord Co. Printing machine for printing groups of symbols
GB8600779D0 (en) * 1986-01-14 1986-02-19 Adana Printing Machines Ltd Thermographic printing machine
IT1321267B1 (it) * 2000-05-19 2004-01-08 Marco Corti Metodo e dispositivo per la pulitura dei cilindri in caucciu' dellemacchine da stampa, particolarmente del tipo cosiddette a bobina.
DE10245962A1 (de) * 2002-10-02 2004-04-15 Man Roland Druckmaschinen Ag Verfahren und Vorrichtung zum Regeln des Schnittregisters einer Rollenrotationsdruckmaschine
ES2371070T3 (es) * 2003-02-24 2011-12-27 Tekna Plasma Systems Inc. Procedimiento para fabricar un blanco de pulverización catódica.
DE10311234A1 (de) * 2003-03-14 2004-09-23 Heidelberger Druckmaschinen Ag Bedruckstoffbahn verarbeitende Maschine
JP2005099729A (ja) * 2003-08-29 2005-04-14 Ricoh Co Ltd 潤滑材塗布装置、プロセスカートリッジ及び画像形成装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2605773A1 (de) * 1976-02-13 1977-08-18 Maschf Augsburg Nuernberg Ag Rollenoffsetmaschine
DE3229035C1 (de) * 1982-08-04 1984-01-05 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Rollen-Offsetrotationsdruckmaschine mit einer Vorrichtung zum Aufbringen von Puder
DE4325725A1 (de) * 1993-07-30 1995-02-02 Cleanpack Gmbh Innovative Verp Verfahren und Vorrichtung zum Bedrucken von Folienbahnen im Rollen-Offsetdruck
DE10207184A1 (de) * 2002-02-21 2003-09-04 Irs Lab Ag Pfaeffikon Offsetdruckmaschine
FR2888527A1 (fr) 2005-07-18 2007-01-19 Goss Int Montataire Sa Machine d'impression et procede correspondant

Also Published As

Publication number Publication date
WO2008152309A1 (fr) 2008-12-18
US20080307989A1 (en) 2008-12-18
FR2916676A1 (fr) 2008-12-05
CN101815620A (zh) 2010-08-25
FR2916676B1 (fr) 2011-04-15

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