EP3072700A1 - Procede destine a regler et a commander la re-humidification et le sechage de bandes de papier - Google Patents

Procede destine a regler et a commander la re-humidification et le sechage de bandes de papier Download PDF

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Publication number
EP3072700A1
EP3072700A1 EP16160471.5A EP16160471A EP3072700A1 EP 3072700 A1 EP3072700 A1 EP 3072700A1 EP 16160471 A EP16160471 A EP 16160471A EP 3072700 A1 EP3072700 A1 EP 3072700A1
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EP
European Patent Office
Prior art keywords
drying
printing material
elements
relative humidity
printing
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
EP16160471.5A
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German (de)
English (en)
Other versions
EP3072700B2 (fr
EP3072700B1 (fr
Inventor
Andreas Elchlepp
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.)
Manroland Goss Web Systems GmbH
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Manroland Web Systems GmbH
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Publication of EP3072700B1 publication Critical patent/EP3072700B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • 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
    • B41F23/02—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by dampening
    • 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
    • B41F23/0403—Drying webs
    • B41F23/0423—Drying webs by convection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/02—Arrangements of indicating devices, e.g. counters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing

Definitions

  • the invention relates to a method for changing the relative humidity of a printing material by means of a drying unit comprising a number of drying elements, which are arranged transversely to the transport direction of the printing substrate and are directed to the printing material to dry each with a drying intensity, wherein the drying elements can be controlled individually and a method for changing the relative humidity of a substrate by means of a moistening device comprising a number of moistening elements, which are arranged transversely to the transport direction of the substrate and are directed to the substrate to moisten this with a respective amount of moisture, wherein the humidifying elements can be controlled individually.
  • this leads to the problem that the paper either behaves extremely differently with respect to the electrostatics or is very wavy. But it can also be a problem that due to the partially high humidity of the paper no electrostatics are used for example for blocking successive leaves or signatures, since the electrostatic is dissipated at higher substrate density.
  • drying units which dry the printing material by means of heating elements are therefore used in the prior art.
  • drying unit for a printing material web.
  • a number of drying elements is provided, which are positioned transversely to the printing material web.
  • Each of these drying elements comprises a heating element to heat the ambient air and a fan, which directs the warm air in the direction of the printing material.
  • the printing material which is guided past the drying unit, even or the color can be dried.
  • For a uniform drying temperature across the web width sensors are provided in the drying elements that measure the air temperature. These data are used to adjust the speed of the individual drying elements in such a way that a uniform temperature distribution and thus drying is made possible.
  • Such a device can not prevent the printing material web or the pressure after drying has a non-uniform moisture distribution.
  • Such a device thus results in that in the case of unequal humidity the areas of high humidity can be dried, but at the same time the areas of not so high or normal humidity (about 2% to 5% relative humidity) become stronger due to lack of solvent / water application be dried so that the residual moisture of the paper, for example, below 2% relative humidity decreases.
  • such dry paper also has unfavorable mechanical properties because it is very brittle and stiff, and thus can also be processed poorly.
  • the invention is therefore an object of the invention to provide a method for changing the relative humidity of a substrate of the type mentioned above, which allows the simplest possible way a particularly uniform drying of the printing material or the printing, so that one for the printing material and the Further processing optimum and uniform degree of drying is achieved with a desired residual moisture.
  • At least two drying elements are controlled such that at least two areas are applied transversely to the transport direction of the substrate with a different drying intensity and / or at least two moistening elements are controlled such that at least two areas transverse to the transport direction of the substrate with a different amount of moisture are applied.
  • the invention is based on the consideration that the entry of solvent / water is dependent on the application of paint. Since the color is not applied evenly, the moisture is not evenly distributed on the substrate, but changes both in printing material direction and across it and is usually inhomogeneous in both directions. It has been recognized that for the same drying time, the areas of high humidity must be dried to a greater extent than the areas of lower humidity or, in an alternative or additional embodiment, the areas of lower humidity must be moistened correspondingly stronger before or after drying. For this reason, the plurality of drying elements or moistening elements arranged transversely to the printing material direction are adjusted in such a way that the drying intensity, ie the temperature provided for drying or moistening intensity, ie the amount of moisture, varies. In this case, at least two areas or zones are provided transversely to the printing material direction, which are acted upon by a different drying or moistening intensity.
  • the drying elements or the moistening elements are controlled on the basis of measured data of a sensor unit in a particularly preferred embodiment.
  • the relative humidity of the printing material is determined in a preferred embodiment.
  • the sensor unit may also consist of a number of sensor elements which are arranged transversely to the transport direction of the printing material. The sensor elements measure the relative humidity of a single area of the substrate.
  • a control unit can then, based on the measurement data of each individual area, control the drying or moistening element assigned to this area and determine the optimum drying intensity or moisture quantity so that the printing material web then has a substantially constant distribution of the relative humidity transversely to the transport direction.
  • the waviness of the web can also be detected and from it the moisture can be indirectly determined. Since the solvent / water entry in the inkjet process depends on the subject, the locations of high humidity are to be equated with those of a high color occupancy. Thus, as sensor elements and optical sensors for detecting the locations of different color assignment can be used.
  • the control of the drying elements or of the moistening elements is carried out on the basis of stored or entered print data or precursor data.
  • the printing material speed and the path of the printing material can be taken into account in order to achieve optimally timed control of the drying elements or moistening elements.
  • the drying elements or moistening elements are also controlled so that at least two areas are acted upon in the transport direction of the printing material with a different drying intensity or moisture.
  • the advantages achieved by the invention are in particular that by the different drying or moistening of individual areas transversely to or in the transport direction of the printing material, which can be compensated in the context of the printing process inhomogeneous relative humidity of the printing material. As a result, a substantially uniform and constant distribution of the relative humidity is achieved. Also, by the individual control of the drying and moistening a desired and optimal for further processing residual moisture of the printing material can be achieved.
  • FIG. 1 a drying unit 1 for a printing material web is shown, which reduces the relative humidity of the printing substrate 2 to a desired, adjustable value.
  • the drying unit 1 is specifically designed so that the relative humidity of the printing material web 2 after passing through the printing material web 2 by the drying unit 1 and the width B of the printing substrate 2 has a substantially constant value.
  • the drying unit 1 after the FIG. 1 a sensor unit 6 in the form of a sensor bar, whose measuring range extends over the entire width B of the printing substrate 2 and the relative humidity or a another measured variable, from which the relative humidity of the printing material web 2 can be determined directly or indirectly.
  • the sensor unit 6 according to the embodiment of FIG. 1 and FIG. 2 In this case, it comprises a multiplicity of sensor elements 8 arranged next to one another, each of which measures a defined section of the printing material web 2.
  • the sensor unit 6 may also comprise a single sensor element 8 or a number of sensor elements 8, which are or arranged transversely to the transport direction x of the printing substrate 2 traversing.
  • the sensor unit 6 is connected to an evaluation unit 10 via a data line 12, via which the measurement data of the sensor elements 8 are sent to the evaluation unit 10 and control commands can also be sent to the sensor unit 6 by the evaluation unit 10 or a control module, not shown ,
  • the evaluation unit 10 generates from the measured data a profile of the relative humidity of the printing material web 2 across the width B of the printing material web 2 and determines from these values an optimal setting for the drying strip 4 in order to achieve the desired relative residual moisture of the printing substrate web B.
  • the drying bar 4 for this purpose also comprises a number of drying elements 14, which are arranged side by side and substantially over the entire width B of the printing material web 2 and are designed such that they reduce the relative humidity of the printing material web 2 in a respective assigned area.
  • Each of these drying elements 12 can be controlled individually and the drying intensity can be adjusted individually, so that the desired target profile of the relative humidity can be achieved by controlling the drying elements 12 in an optimum manner from the determined actual profile of the relative humidity of the printing material web 2.
  • the drying bar on the data side is also connected via a data line 16 to the evaluation unit 10 or a control module, not shown, of the evaluation unit 10 in order to transmit control commands to the individual drying elements 12.
  • the drying unit 1 may also comprise a moistening strip 18. Such a configuration of the drying unit 1 is in FIG. 2 shown.
  • the moistening strip 18 also comprises a number of adjacent moistening elements 20, which are arranged substantially over the entire width B of the printing material web 2 and can moisten the printing material web 2 in a respectively assigned area, so that the relative humidity of the printing substrate web 2 is increased.
  • This humidification unit 18 is also connected on the data side to the evaluation unit 10 via a data line 22 so that control signals from the evaluation unit 10 or a control module, not shown, of the evaluation unit can be transmitted to the humidification strip 18.
  • the substrate web is now not lowered or dried to a relative humidity substantially constant over the width B of the printing material web 2, but the moisture of the printing material web 2 is increased in individual regions, so that a uniform distribution of the relative humidity is achieved.
  • a drying bar 24 is provided to reduce the relative humidity of the printing material to the desired target value.
  • This drying bar 24 can also be as in FIG. 1 illustrated include a number of individually controllable drying elements 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Ink Jet (AREA)
  • Drying Of Solid Materials (AREA)
EP16160471.5A 2015-03-24 2016-03-15 Procede destine a regler et a commander la re-humidification et le sechage de bandes de papier Active EP3072700B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015104382.3A DE102015104382A1 (de) 2015-03-24 2015-03-24 Verfahren zur geregelten und gesteuerten Wiederbefeuchtung und Trocknung von Papierbahnen

Publications (3)

Publication Number Publication Date
EP3072700A1 true EP3072700A1 (fr) 2016-09-28
EP3072700B1 EP3072700B1 (fr) 2019-05-08
EP3072700B2 EP3072700B2 (fr) 2022-08-17

Family

ID=55646299

Family Applications (1)

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EP16160471.5A Active EP3072700B2 (fr) 2015-03-24 2016-03-15 Procede destine a regler et a commander la re-humidification et le sechage de bandes de papier

Country Status (3)

Country Link
EP (1) EP3072700B2 (fr)
JP (1) JP2016180581A (fr)
DE (1) DE102015104382A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3251854A3 (fr) * 2016-05-30 2018-02-07 manroland web systems GmbH Commande de modules en ligne dans une imprimante
DE102015222753B4 (de) 2015-11-18 2019-02-28 Koenig & Bauer Ag Bearbeitungsvorrichtung für flaches Material und ein Verfahren zum Bearbeiten eines flachen Materials
CN110605923A (zh) * 2018-06-14 2019-12-24 海德堡印刷机械股份公司 具有润湿装置的页张印刷机
CN112874197A (zh) * 2019-11-29 2021-06-01 海德堡印刷机械股份公司 用于在使用热力学模型的情况下干燥承印基底的方法
EP3960479A1 (fr) * 2020-08-24 2022-03-02 Swiss Krono TEC AG Procédé d'impression de la surface d'une pièce dotée d'un décor et dispositif correspondant

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106864023B (zh) * 2017-02-20 2019-03-15 贵阳精彩数字印刷有限公司 一种印刷用烘干器
CN107471823A (zh) * 2017-08-30 2017-12-15 张家港保税区美佳印刷有限公司 一种纸张印刷品的加湿装置
DE102020128616A1 (de) 2020-10-30 2022-05-05 Canon Production Printing Holding B.V. Vorrichtung und Verfahren zum Bedrucken eines Bedruckstoffs mit einem Druckgerät
DE102022105333A1 (de) 2022-03-08 2023-09-14 Koenig & Bauer Ag Verfahren zum mechanischen Einbringen von mindestens einer Rillung in einen bahnförmigen oder bogenförmigen bedruckten Bedruckstoff
DE102022105332A1 (de) 2022-03-08 2023-09-14 Koenig & Bauer Ag Druckmaschine mit mindestens einem Rillwerkzeug

Citations (6)

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DE19533673A1 (de) * 1995-09-13 1997-03-20 Tech Uni Chemnitz Zwickau I Fu Verfahren zur Trocknung und Wiederbefeuchtung von bedruckten Bogen- und/oder Bahnmaterialien
DE29622903U1 (de) * 1996-01-31 1997-07-17 Waizmann Franz Trockner in einer Druckmaschine
DE19901801A1 (de) * 1999-01-19 2000-07-27 Baldwin Grafotec Gmbh Vorrichtung zum Konditionieren einer Papierbahn
EP2258553A1 (fr) * 2009-06-05 2010-12-08 WIFAG Maschinenfabrik AG Dispositif et procédé de séchage de couleur sur un substrat imprimé
WO2014046665A1 (fr) 2012-09-21 2014-03-27 Hewlett-Packard Development Company, L.P. Ensemble de séchage
US20140366760A1 (en) * 2013-06-18 2014-12-18 Stuart J. Boland Liquid dispersal in radiant dryers for printing systems

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US5592751A (en) 1994-11-23 1997-01-14 Voith Sulzer Papiermaschinen Gmbh Dryer section having combination of single and double tier dryer groups
US6508552B1 (en) * 2001-10-26 2003-01-21 Hewlett-Packard Co. Printer having precision ink drying capability and method of assembling the printer
FI124614B (fi) 2005-07-20 2014-11-14 Stora Enso Oyj Menetelmä liikkuvan materiaalirainan kuivaamiseksi paperi- tai kartonkikoneella

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19533673A1 (de) * 1995-09-13 1997-03-20 Tech Uni Chemnitz Zwickau I Fu Verfahren zur Trocknung und Wiederbefeuchtung von bedruckten Bogen- und/oder Bahnmaterialien
DE29622903U1 (de) * 1996-01-31 1997-07-17 Waizmann Franz Trockner in einer Druckmaschine
DE19901801A1 (de) * 1999-01-19 2000-07-27 Baldwin Grafotec Gmbh Vorrichtung zum Konditionieren einer Papierbahn
EP2258553A1 (fr) * 2009-06-05 2010-12-08 WIFAG Maschinenfabrik AG Dispositif et procédé de séchage de couleur sur un substrat imprimé
WO2014046665A1 (fr) 2012-09-21 2014-03-27 Hewlett-Packard Development Company, L.P. Ensemble de séchage
US20140366760A1 (en) * 2013-06-18 2014-12-18 Stuart J. Boland Liquid dispersal in radiant dryers for printing systems

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015222753B4 (de) 2015-11-18 2019-02-28 Koenig & Bauer Ag Bearbeitungsvorrichtung für flaches Material und ein Verfahren zum Bearbeiten eines flachen Materials
EP3251854A3 (fr) * 2016-05-30 2018-02-07 manroland web systems GmbH Commande de modules en ligne dans une imprimante
CN110605923A (zh) * 2018-06-14 2019-12-24 海德堡印刷机械股份公司 具有润湿装置的页张印刷机
CN112874197A (zh) * 2019-11-29 2021-06-01 海德堡印刷机械股份公司 用于在使用热力学模型的情况下干燥承印基底的方法
EP3960479A1 (fr) * 2020-08-24 2022-03-02 Swiss Krono TEC AG Procédé d'impression de la surface d'une pièce dotée d'un décor et dispositif correspondant
WO2022043307A1 (fr) * 2020-08-24 2022-03-03 SWISS KRONO Tec AG Procédé d'impression de la surface d'une pièce à usiner avec un motif décoratif, et dispositif associé

Also Published As

Publication number Publication date
DE102015104382A1 (de) 2016-09-29
EP3072700B2 (fr) 2022-08-17
EP3072700B1 (fr) 2019-05-08
JP2016180581A (ja) 2016-10-13

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