EP1897688A2 - Installation de préparation de d'agent mouillant pour l'impression offset - Google Patents

Installation de préparation de d'agent mouillant pour l'impression offset Download PDF

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Publication number
EP1897688A2
EP1897688A2 EP07016657A EP07016657A EP1897688A2 EP 1897688 A2 EP1897688 A2 EP 1897688A2 EP 07016657 A EP07016657 A EP 07016657A EP 07016657 A EP07016657 A EP 07016657A EP 1897688 A2 EP1897688 A2 EP 1897688A2
Authority
EP
European Patent Office
Prior art keywords
dampening solution
base material
dampening
cooling
installation according
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
EP07016657A
Other languages
German (de)
English (en)
Other versions
EP1897688B1 (fr
EP1897688A3 (fr
Inventor
Eike Moes
Christian Brüggemann
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.)
Technotrans SE
Original Assignee
Technotrans SE
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 Technotrans SE filed Critical Technotrans SE
Publication of EP1897688A2 publication Critical patent/EP1897688A2/fr
Publication of EP1897688A3 publication Critical patent/EP1897688A3/fr
Application granted granted Critical
Publication of EP1897688B1 publication Critical patent/EP1897688B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0054—Devices for controlling dampening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/32—Ducts, containers, or like supply devices for liquids

Definitions

  • the present invention relates to a system for dampening solution preparation for offset printing with a dampening solution processing device and a device for feeding one or more liquid raw materials for dampening solution processing in the dampening solution processing device.
  • Such fountain solution treatment and supply systems are well known, for example from the European Patent Application 02 004 480 the applicant.
  • the known systems include cooling devices which ensure that the processed dampening solution supplied to the printing press has a suitable process temperature, so that the alcohol contained in the dampening solution does not volatilize and the flow and wetting behavior is optimized.
  • For the wet offset pressure is a dampening solution temperature in the range of 8 to 12 ° C typical, which must be maintained with a tolerance of a maximum of +/- 1 Kelvin. Fluctuations in the temperature of the fountain solution supplied to the printing rollers lead to a change in the quality of the printing result.
  • the cooling in the dampening solution circuit comprises a controlled system which regulates the dampening solution fed to the pressure rollers as a function of a measured actual dampening temperature to a desired temperature value.
  • the dampening solution treatment device If, for the production of fresh dampening solution, new raw materials are fed into the dampening solution treatment device, the temperature of which differs considerably from the temperature prevailing in the dampening solution circuit, it may happen that the dampening solution cooling does not compensate for this difference due to the required reaction time of the control path can, so that the temperature of the dampening solution is subjected to fluctuations.
  • the temperature can in this case leave the predetermined tolerance range, so that it comes in the printing process problems.
  • Object of the present invention is therefore to design a system of the type described above such that regardless of the temperature of the raw materials that are available for feeding into the dampening solution, a cooling of the processed dampening solution to a provided process temperature is possible. In particular, it is a goal to avoid greater fluctuations in the process temperature of the processed dampening solution, which adversely affect the printing process.
  • the plant according to the invention for dampening solution preparation is characterized by the features of claim 1.
  • the feed device which supplies the raw materials to the dampening solution treatment device, is provided for cooling the base materials so that they already reach the dampening solution processing device in the pre-cooled state. If the raw materials are already largely cooled down to the desired process temperature of the dampening solution, suddenly occurring temperature fluctuations in the dampening solution circuit can be avoided. Remaining smaller temperature differences can be compensated by the already known cooling devices in dampening solution circulation in the feed to the pressure roller. In this way, it is achieved by the precooling of the raw materials according to the invention that the process temperature of the dampening solution always remains within a tolerance range in which the printing result has a constant quality.
  • the apparatus shown in Fig. 1 comprises a device 10 for processing a dampening solution for an offset printing machine 12.
  • This dampening solution processing apparatus 10 comprises a fountain solution tank 16, which is also part of a dampening solution circuit 18, in which the dampening solution 14 to the printing press 12 and again back to the dampening solution tank 16 is pumped.
  • a pump 22 is arranged in the inlet 20 of the printing press 12.
  • the dampening solution returning through the return 24 is filtered by a filter 26 before it reaches the dampening solution tank 16 again. In this way, impurities and foreign substances that accumulate in the dampening solution during the printing process, filtered out of the dampening solution circuit 18.
  • the dampening solution 14 is cooled to a specific process temperature.
  • a portion of the dampening solution circulating in the dampening solution circuit 18 is branched off from the inlet 20 of the printing machine 12 by a bypass line 28 and fed to a cooling unit 30.
  • the cooled by the cooling unit 30 dampening solution is introduced through a return line 32 back into the fountain solution tank.
  • this temperature is constant in a range of about 8 to 12 ° C with a tolerance of +/- 1 Kelvin, preferably +/- 0.5 Kelvin.
  • Fluctuations in the temperature in the dampening solution circuit 18 can be compensated by a control system, not shown, between the dampening solution cooling unit 30 and the dampening solution tank 16.
  • the proportion of the fountain solution diverted to the cooling unit 30 can be increased.
  • the liquid raw materials are fed to the dampening solution processing apparatus for producing new dampening solution by a feed device, which is generally indicated by the reference numeral 40 in Figure 1 on the left.
  • the liquid base materials are in particular water, alcohol and additives such as antimicrobials, surface-active substances or the like. It is possible to use an infeed device 40 of the type present here for each individual base material. Optionally, a single feed device 40 can be used for an already present mixture of base materials, or such a mixture is, as will be explained in more detail below, formed within the feed device 40 itself.
  • the base material 42 is introduced through a raw material supply line 44 into an antechamber 46.
  • the raw material supply line 44 includes a shut-off valve 48 which allows control of the flow through the supply line 44 or a complete shut-off thereof.
  • the pre-chamber 46 and the fountain solution tank 16 are in the embodiment shown here in a single container 50 and are separated by a partition 52 from each other. If the prechamber 46 is filled via the raw material supply line 44, the base material 42 can flow via an overflow 54 in the upper region of the partition wall 52 out of the prechamber 46 into the dampening agent tank 16. If a plurality of raw material feed lines 44 for different basic substances such as water, alcohol and the like are more in the prechamber 46, then within the prechamber 46 there is already a mixture of raw materials which forms the dampening solution.
  • the present invention therefore relates not only in the strict sense to a precooling of individual raw materials, but also to a precooling of a mixture of basic substances which forms a fountain solution held within the pre-chamber 46, which is introduced into the dampening solution tank 16 in the pre-cooled state and there dampening solution 18 described above is available.
  • This pre-cooling takes place in the illustrated embodiment by the thermal coupling between the pre-chamber 46 and the fountain solution tank 16, which are separated from each other within the container 50 only by the partition 52.
  • the base material 42 or the base material mixture is cooled within the pre-chamber 46 through the partition wall 52 through the fountain solution 14 in the fountain solution tank 16, which is constantly cooled by the dampening solution cooling unit 30 to the process temperature.
  • the dampening solution cooling unit 30 to the process temperature.
  • the pre-chamber 46 may be formed as a self-contained container which rests with a wall on an outer wall of the fountain solution tank 16. Furthermore, it is conceivable to construct the prechamber 46 in such a way that it is at least partially enclosed by the dampening agent tank 16.
  • FIG. 2 shows a modification of the embodiment from FIG. 1, in which the feed device 60 of the dampening solution preparation system comprises a cooling unit 64 for cooling the base material 42.
  • this cooling unit is a cooling coil 64 which extends within the pre-chamber 46 for cooling the base material 42 and is flowed through by a cooling medium such as water.
  • a cooling medium such as water.
  • the feed device 70 of the dampening solution treatment plant in Fig. 3 is used for direct feeding of a pre-cooled within the base material feed line 44 base material 42 or base material mixture in the dampening solution tank 16. This is based on an intermediate storage the raw material 42 is dispensed within a pre-chamber, since the base material 42 is already pre-cooled by a cooling unit 73 so that its introduction into the dampening solution tank can not lead to a temperature fluctuation within the dampening solution circuit 18. Ideally, the cooling unit 73 already cools the base material 42 within the raw material supply line 44 to the process temperature, so that no additional cooling power has to be expended by the dampening solution cooling unit 30 when compensating for a loss of dampening solution 14.
  • the base material can be passed through a coil, which wraps around the dampening solution tank and is thus thermally coupled thereto. Before the base material flows from the end of the coil into the dampening solution tank 16, it is thus pre-cooled by the outer wall of the fountain solution tank 16. The coil then forms a buffer in a manner similar to the prechamber 46 in which a flow volume of the base thermally coupled to the fountain solution 14 within the fountain solution tank 16 is pre-cooled thereby.
  • dampening solution processing device 10, 62, 72 which is connected to the printing press 12 by the dampening solution circuit 18, and the feed device 40, 60, 70 into a peripheral device to be provided to a printing press that a space-saving and compact design is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Printing Plates And Materials Therefor (AREA)
EP07016657A 2006-09-07 2007-08-24 Installation de préparation de d'agent mouillant pour l'impression offset Not-in-force EP1897688B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006042091A DE102006042091B4 (de) 2006-09-07 2006-09-07 Anlage zur Feuchtmittelaufbereitung für den Offset-Druck

Publications (3)

Publication Number Publication Date
EP1897688A2 true EP1897688A2 (fr) 2008-03-12
EP1897688A3 EP1897688A3 (fr) 2009-10-28
EP1897688B1 EP1897688B1 (fr) 2012-06-06

Family

ID=38896968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07016657A Not-in-force EP1897688B1 (fr) 2006-09-07 2007-08-24 Installation de préparation de d'agent mouillant pour l'impression offset

Country Status (3)

Country Link
US (1) US8117962B2 (fr)
EP (1) EP1897688B1 (fr)
DE (1) DE102006042091B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008003447A1 (de) * 2008-01-08 2009-07-16 Technotrans Ag Dezentrales Reinigungssystem

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9421933B1 (en) * 2015-04-21 2016-08-23 Ford Global Technologies, Llc Active glove box door with intermediate skeleton member

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1500499A1 (fr) 2003-07-24 2005-01-26 Krieg, Gunther, Prof.Dr.Ing. Procédé et dispositif pour mesurer et régler la concentration de produits chimiques dans la solution de mouillage pour l'impression offset
EP1679186A2 (fr) 2004-12-30 2006-07-12 Baldwin Germany GmbH Rangement pour la distribution de fluides pour des machines d'impression offset

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263020B (de) 1961-11-14 1968-03-14 Baldwin Gegenheimer Corp Vorrichtung an einer Offsetdruckmaschine zum Zufuehren von Befeuchtungsfluessigkeit
US3358704A (en) * 1964-09-24 1967-12-19 Baldwin Gegenheimer Corp Printing press water solution mixing mechanism
US3352317A (en) * 1964-12-09 1967-11-14 Dahlgren Mfg Company Inc Dampening fluid cooling and circulating apparatus for lithographic offset press dampening device
US3741115A (en) * 1967-08-21 1973-06-26 L Keller Method of and apparatus for controlling lithographic printing
US3858602A (en) 1973-06-15 1975-01-07 Baldwin Gegenheimer Corp Air operated safety shut-off system for liquid reservoir feed
US3893470A (en) * 1974-05-20 1975-07-08 Baldwin Gegenheimer Corp Liquid mixing and distributing apparatus
US4394870A (en) * 1977-05-04 1983-07-26 Baldwin-Gegenheimer Corporation System for mixing concentrate and water to form fountain solution for offset printing presses
FR2389404B1 (fr) 1977-05-04 1981-09-11 Baldwin Gegenheimer Corp
DE9413438U1 (de) * 1994-08-19 1995-06-22 Baldwin-Gegenheimer Gmbh, 86165 Augsburg Druckmaschinen-Temperierungssystem
DE19949906A1 (de) * 1999-10-16 2001-04-19 Baldwin Grafotec Gmbh Druckmaschinen-Reinigungsvorrichtung
US6508069B2 (en) * 2000-02-29 2003-01-21 Peter M. Sibilia Temperature controlled gravity feed fountain solution supply apparatus
DE10111614B4 (de) 2001-03-10 2004-02-12 Technotrans Ag Feuchtmittel-Zufuhrsystem

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1500499A1 (fr) 2003-07-24 2005-01-26 Krieg, Gunther, Prof.Dr.Ing. Procédé et dispositif pour mesurer et régler la concentration de produits chimiques dans la solution de mouillage pour l'impression offset
EP1679186A2 (fr) 2004-12-30 2006-07-12 Baldwin Germany GmbH Rangement pour la distribution de fluides pour des machines d'impression offset

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008003447A1 (de) * 2008-01-08 2009-07-16 Technotrans Ag Dezentrales Reinigungssystem
DE102008003447B4 (de) * 2008-01-08 2010-08-19 Technotrans Ag Dezentrales Reinigungssystem

Also Published As

Publication number Publication date
US8117962B2 (en) 2012-02-21
EP1897688B1 (fr) 2012-06-06
US20080060537A1 (en) 2008-03-13
EP1897688A3 (fr) 2009-10-28
DE102006042091B4 (de) 2008-04-30
DE102006042091A1 (de) 2008-03-27

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