EP1072406B1 - Dispositif auxiliaire électrostatique d'impression - Google Patents

Dispositif auxiliaire électrostatique d'impression Download PDF

Info

Publication number
EP1072406B1
EP1072406B1 EP00109262A EP00109262A EP1072406B1 EP 1072406 B1 EP1072406 B1 EP 1072406B1 EP 00109262 A EP00109262 A EP 00109262A EP 00109262 A EP00109262 A EP 00109262A EP 1072406 B1 EP1072406 B1 EP 1072406B1
Authority
EP
European Patent Office
Prior art keywords
voltage
printing
assist device
voltage generator
current
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.)
Revoked
Application number
EP00109262A
Other languages
German (de)
English (en)
Other versions
EP1072406A1 (fr
Inventor
Franz Knopf
Thomas Ludwig
Ernst August Hahne
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.)
Eltex Elektrostatik GmbH
Original Assignee
Eltex Elektrostatik GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7916568&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1072406(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eltex Elektrostatik GmbH filed Critical Eltex Elektrostatik GmbH
Publication of EP1072406A1 publication Critical patent/EP1072406A1/fr
Application granted granted Critical
Publication of EP1072406B1 publication Critical patent/EP1072406B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/001—Heliostatic printing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/37—Printing employing electrostatic force

Definitions

  • the invention relates to an electrostatic Print Help.
  • Electrostatic printing aids to support the Transitions from printing inks are in a variety of ways Embodiments known. Be such printing aids used in printing inks, which is a flammable Solvent are to avoid Fires and explosions to take measures that an ignition of the resulting mixture of Prevent solvent with air. In such a explosive environment is subject to the Electrostatic printing assistance special Safety precautions.
  • a well-known generic, so-called intrinsically safe electrostatic printing aid (US-PS 4,360,850) according to the preamble of claim 1 achieves the required safety through the Monitoring the ohmic conductivity of one of the High voltage generator connected impedance. If this conductivity exceeds a given value Limit, the output voltage of the High voltage generator turned off and thus his Output line limited to zero. It means that for safety in potentially explosive areas a consumer connected to the generator a predetermined minimum resistance not may fall below.
  • the invention is therefore based on the object an electrostatic printing aid according to the Generic term of main claim for use in a potentially explosive environment easier in To design training and more effectively in the company, without this would endanger the security and without security and functionality of the in wide ranges scattering electrical Conductivity of the connected to the printing aid Depend on the consumer.
  • the Voltage transfer device as simple as possible can be configured, for example as Slip ring brush, as a contact roller or spring or electrically conductive ball bearings, without that in the hazardous area guided electric Charge, e.g. in the form of electrical sparks regardless of the ohmic conductivity of the Coating of the impression roller an ignition of solvent-containing air allows. So it has to be unlike the prior art not complicated and elaborately encapsulated Voltage transfer devices be present. Rather, all are direct Charge transfer devices possible, as they Prior art so far outside the Hazardous area already in use Find. Also, none are the functionality impairing restrictions on the electrical conductivity of a connected Consumer.
  • the high voltage generator with adjustable or not adjustable, but in any case maximum electrical output power points in this case expedient embodiment a voltage limitation for the maximum voltage and / or one Current limit for the maximum current.
  • a voltage limitation for the maximum voltage and / or one Current limit for the maximum current are particularly expedient embodiment.
  • the Safety is given even if one or two independent errors in the Voltage limiting device and / or the Current limiting device should occur.
  • the high voltage generator 3 has a Voltage device 33 for generating a adjustable high voltage on, at one Connection connected in series three Current limiting devices 34 are arranged. Behind this series circuit of Current limiting devices 34 is the Parallel connection of three voltage limiters 35 for the total of 36 designated high voltage to the electrical output terminals 31, 32 of the High voltage device 3 is provided. With this each triple redundant wiring is the Output power of the high voltage 36 to a Maximum value limited.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)
  • Measuring Fluid Pressure (AREA)
  • Rotary Presses (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Glass Compositions (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Dc-Dc Converters (AREA)

Claims (7)

  1. Auxiliaire d'impression électrostatique pour assister le passage de l'encre d'imprimerie avec des solvants inflammables lors de l'impression, comprenant un générateur à haute tension (3) destiné à produire une haute tension électrostatique (36) à ses raccords de sortie (31, 32) et un dispositif de transmission de tension (2) pour la transmission de la haute tension (36) à un presseur (1) ou une plaque en contact avec la bande à imprimer (5), le générateur haute pression (3) étant muni d'un dispositif de limitation réglable pour sa puissance de sortie, caractérisé en ce que le générateur haute tension (3) est réglé avec une puissance de sortie du dispositif de limitation différente de zéro, maximale, mais insuffisante pour l'inflammation de l'air contenant les solvants et que le dispositif de transmission de tension (2) présente des bagues collectrices, des balais, des galets de contact, des ressorts de contact et/ou des paliers à roulement ou à billes conduisant l'électricité.
  2. Auxiliaire d'impression selon la revendication 1, caractérisé en ce que l'énergie électrique maximale de la puissance de sortie ne dépasse pas 350 mJ.
  3. Auxiliaire d'impression selon la revendication 1 ou 2, caractérisé en ce que le générateur haute tension (3) présente un ou plusieurs limiteurs de tension (35) pour la haute tension électrostatique (36) montés parallèlement aux raccords de sortie (31, 32), de préférence jusqu'à 3000 V, et/ou un ou plusieurs dispositifs de limitation de courant (34) montés en série avec les raccords de sortie (31, 32), de préférence jusqu'à 12 mA.
  4. Auxiliaire d'impression selon la revendication 3, caractérisé en ce que le limiteur de tension (35) au moins unique est conçu pour une haute tension électrostatique (36) allant jusqu'à 3000 V.
  5. Auxiliaire d'impression selon la revendication 3, caractérisé en ce que le dispositif de limitation de courant (34) au moins unique est conçu pour un courant allant jusqu'à 12 mA.
  6. Auxiliaire d'impression selon l'une des revendications 1 à 4, caractérisé en ce que le générateur haute tension (3) présente un autre dispositif de limitation de tension réglable, indépendant du dispositif de limitation de tension (35) important du point de vue de la technique de sécurité.
  7. Auxiliaire d'impression selon l'une des revendications 1 à 3 et 5, caractérisé en ce que le générateur haute tension (3) présente un autre limiteur de courant réglable, indépendant du dispositif de limitation de courant (34) important du point de vue de la technique de sécurité.
EP00109262A 1999-07-29 2000-04-28 Dispositif auxiliaire électrostatique d'impression Revoked EP1072406B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19935784 1999-07-29
DE19935784A DE19935784A1 (de) 1999-07-29 1999-07-29 Elektrostatische Druckhilfe

Publications (2)

Publication Number Publication Date
EP1072406A1 EP1072406A1 (fr) 2001-01-31
EP1072406B1 true EP1072406B1 (fr) 2005-07-13

Family

ID=7916568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00109262A Revoked EP1072406B1 (fr) 1999-07-29 2000-04-28 Dispositif auxiliaire électrostatique d'impression

Country Status (8)

Country Link
US (1) US6508174B1 (fr)
EP (1) EP1072406B1 (fr)
JP (1) JP2001038947A (fr)
AT (1) ATE299437T1 (fr)
DE (2) DE19935784A1 (fr)
DK (1) DK1072406T3 (fr)
ES (1) ES2244376T3 (fr)
PT (1) PT1072406E (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005016974U1 (de) * 2005-10-25 2006-01-05 Dettke, Christa Presseur
DE102008006269B3 (de) * 2008-01-25 2009-05-14 Eltex-Elektrostatik Gmbh Presseur sowie dessen Verwendung
US20110224930A1 (en) * 2010-03-10 2011-09-15 Total Manufacturing Co. System and method for detection of insect infestation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477369A (en) * 1967-05-04 1969-11-11 Hurletron Inc Electrostatically assisted intaglio printing
US3641971A (en) * 1967-09-01 1972-02-15 Arvid C Walberg Apparatus for preventing arcing in an electrostatic coating system
US3875892A (en) * 1974-01-14 1975-04-08 Ransburg Corp Apparatus for avoiding sparks in an electrostatic coating system
US4360850A (en) * 1979-10-30 1982-11-23 Hurletronaltair, Inc. Intrinsically safe electrostatic assist units
NL8320067A (nl) * 1983-02-07 1985-01-02 Gravure Res Inst Verbeterde werkwijze en inrichting voor het direct laden van het oppervlak van een drukrol van met een elektrostatische hulp werkende gravurepers.
US4966555A (en) * 1989-04-24 1990-10-30 Rotation Dynamics Corporation Electrostatic assist rotogravure printing safety contact
US5243487A (en) * 1990-12-20 1993-09-07 Hurletron Incorporated Gravure press with crowbar circuit

Also Published As

Publication number Publication date
US6508174B1 (en) 2003-01-21
DE19935784A1 (de) 2001-02-01
PT1072406E (pt) 2005-09-30
DE50010696D1 (de) 2005-08-18
DK1072406T3 (da) 2005-11-07
ES2244376T3 (es) 2005-12-16
JP2001038947A (ja) 2001-02-13
ATE299437T1 (de) 2005-07-15
EP1072406A1 (fr) 2001-01-31

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