EP1072406A1 - Elektrostatische Druckhilfe - Google Patents
Elektrostatische Druckhilfe Download PDFInfo
- Publication number
- EP1072406A1 EP1072406A1 EP00109262A EP00109262A EP1072406A1 EP 1072406 A1 EP1072406 A1 EP 1072406A1 EP 00109262 A EP00109262 A EP 00109262A EP 00109262 A EP00109262 A EP 00109262A EP 1072406 A1 EP1072406 A1 EP 1072406A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- high voltage
- printing aid
- voltage generator
- voltage
- 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
Links
Images
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 Printing aid.
- Electrostatic printing aids to support the Transition from printing ink are in a variety of Embodiments known. Will such printing aids used in inks that have a flammable Have solvents are to avoid Fires and explosions to take measures that an ignition of the resulting mixture of Prevent solvent with air. In one explosive environment is subject to electrostatic printing aid special Safety precautions.
- a known generic, so-called intrinsically safe electrostatic pressure aid (US-PS 4,360,850) according to the preamble of claim 1 achieves the required security through the Monitoring the ohmic conductivity of one of the High voltage generator connected impedance. If this conductivity exceeds a specified one Limit value, the output voltage of the High voltage generator switched off. That means, that for safety in explosive Area connected to the generator Consumer a predetermined minimum Resistance value must not fall below.
- the invention is therefore based on the object an electrostatic printing aid according to the Preamble of the main claim for use in in an explosive environment easier Training and making it more effective in operation, without endangering security and without security and functionality of the electrical scattering in wide areas Conductivity of the connected to the printing aid Depend on the consumer.
- the Voltage transmission device as simple as possible can be configured, for example as Slip ring brush, as a contact roller or spring or electrically conductive ball bearing.
- the Voltage transmission device as simple as possible can be configured, for example as Slip ring brush, as a contact roller or spring or electrically conductive ball bearing.
- the high voltage generator with adjustable or not adjustable, but in any case maximum electrical output power indicates in expedient design a voltage limitation for the maximum voltage and / or one Current limitation for the maximum current.
- voltage and Current limitation implemented redundantly the Security is given even if one or two independent errors in the Voltage limiting device and / or the Current limiting device should occur.
- With 3 is a high voltage generator for generation an electrostatic high voltage, the via its output connections 31, 32 to an as trained electric grinding brush, total with 2 designated voltage transmission device is connected to the shaft 11 of the first designated impressioner attacks.
- the impressionist is with an electrically conductive coating 12 as Coat provided that the electrical charge to the between impression roller and a grounded pressure cylinder 4 located web to be printed 5 conducts.
- With 100 is the area marked that due to the solvent-containing air is explosive.
- the high voltage generator 3 has one Voltage device 33 for generating a adjustable high voltage on one of them Connection in series three Current limiting devices 34 are arranged. Behind this series connection of Current limiting devices 34 is the Parallel connection of three voltage limiters 35 for the total of 36 high voltage to the electrical output connections 31, 32 of the High-voltage device 3 is provided. With this triple redundant wiring is the Output power of the high voltage 36 to one Maximum value limited.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Printing Methods (AREA)
- Photoreceptors In Electrophotography (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Dc-Dc Converters (AREA)
- Measuring Fluid Pressure (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Rotary Presses (AREA)
- Glass Compositions (AREA)
Abstract
Description
Claims (5)
- Elektrostatische Druckhilfe zur Unterstützung des Übergangs von Druckfarbe mit brennbaren Lösungsmitteln beim Drucken mit einem Hochspannungsgenerator (3) zur Erzeugung einer elektrostatischen Hochspannung (36) an seinen Ausgangangsanschlüssen (31,32) und mit einer Spannungsübertragungseinrichtung (2) für die Übertragung der Hochspannung (36) auf einen mit der zu bedruckenden Bahn (5) in Kontakt stehenden Presseur (1) oder eine Platte dadurch gekennzeichnet, dass der Hochspannungsgenerator (3) mit einer einstellbaren Begrenzungseinrichtung für dessen Ausgangsleistung versehen ist und dass die Spannungsübertragungseinrichtung (2) Schleifringe, Schleifbürsten, Kontaktrollen, Kontaktfedern und/oder elektrisch leitende Wälz- oder Kugellager aufweist.
- Druckhilfe nach Anspruch 1, dadurch gekennzeichnet, dass die maximale elektrische Energie der Ausgangsleistung 350 mJ nicht übersteigt.
- Druckhilfe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Hochspannungsgenerator (3) einen oder mehrere parallell zu den Ausgangangsanschlüssen (31,32) geschaltete Spannungsbegrenzer (35) für die elektrostatische Hochspannung (36), vorzugsweise bis 3000 V, und/oder eine oder mehrere in Serie zu den Ausgangangsanschlüssen (31,32) geschaltete Strombegrenzungseinrichtungen (34), vorzugseise bis 12 mA aufweist.
- Druckhilfe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Hochspannungsgenerator (3) eine von der sicherheitstechnisch relevanten Spannungsbegrenzungseinrichtung (35) unabhängige, einstellbare weitere Spannungsbegrenzungseinrichtung aufweist.
- Druckhilfe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Hochspannungsgenerator (3) einen von der sicherheitstechnisch relevanten Strombegrenzungseinrichtung (34) unabhängigen, einstellbare weiteren Strombegrenzer aufweist.
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 true EP1072406A1 (de) | 2001-01-31 |
EP1072406B1 EP1072406B1 (de) | 2005-07-13 |
Family
ID=7916568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00109262A Revoked EP1072406B1 (de) | 1999-07-29 | 2000-04-28 | Elektrostatische Druckhilfe |
Country Status (8)
Country | Link |
---|---|
US (1) | US6508174B1 (de) |
EP (1) | EP1072406B1 (de) |
JP (1) | JP2001038947A (de) |
AT (1) | ATE299437T1 (de) |
DE (2) | DE19935784A1 (de) |
DK (1) | DK1072406T3 (de) |
ES (1) | ES2244376T3 (de) |
PT (1) | PT1072406E (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008006269B3 (de) * | 2008-01-25 | 2009-05-14 | Eltex-Elektrostatik Gmbh | Presseur sowie dessen Verwendung |
EP1780011A3 (de) * | 2005-10-25 | 2009-10-28 | Christa Dettke | Presseur |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110224930A1 (en) * | 2010-03-10 | 2011-09-15 | Total Manufacturing Co. | System and method for detection of insect infestation |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4360850A (en) * | 1979-10-30 | 1982-11-23 | Hurletronaltair, Inc. | Intrinsically safe electrostatic assist units |
US5243487A (en) * | 1990-12-20 | 1993-09-07 | Hurletron Incorporated | Gravure press with crowbar circuit |
Family Cites Families (5)
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 |
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 |
-
1999
- 1999-07-29 DE DE19935784A patent/DE19935784A1/de not_active Withdrawn
-
2000
- 2000-04-28 AT AT00109262T patent/ATE299437T1/de not_active IP Right Cessation
- 2000-04-28 DE DE50010696T patent/DE50010696D1/de not_active Revoked
- 2000-04-28 ES ES00109262T patent/ES2244376T3/es not_active Expired - Lifetime
- 2000-04-28 EP EP00109262A patent/EP1072406B1/de not_active Revoked
- 2000-04-28 DK DK00109262T patent/DK1072406T3/da active
- 2000-04-28 PT PT00109262T patent/PT1072406E/pt unknown
- 2000-07-06 JP JP2000204954A patent/JP2001038947A/ja active Pending
- 2000-07-28 US US09/628,424 patent/US6508174B1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4360850A (en) * | 1979-10-30 | 1982-11-23 | Hurletronaltair, Inc. | Intrinsically safe electrostatic assist units |
US5243487A (en) * | 1990-12-20 | 1993-09-07 | Hurletron Incorporated | Gravure press with crowbar circuit |
Non-Patent Citations (1)
Title |
---|
OPPENHEIMER: "ELECTROSTATIC TRANSFER OF INK IN GRAVURE PRINTING", TAPPI, vol. 49, no. 11, November 1966 (1966-11-01), New York, pages 85a - 86a, XP002152076 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1780011A3 (de) * | 2005-10-25 | 2009-10-28 | Christa Dettke | Presseur |
DE102008006269B3 (de) * | 2008-01-25 | 2009-05-14 | Eltex-Elektrostatik Gmbh | Presseur sowie dessen Verwendung |
WO2009094499A1 (en) | 2008-01-25 | 2009-07-30 | Illinois Tool Works Inc. | Impression roller and use of the same |
US8444538B2 (en) | 2008-01-25 | 2013-05-21 | Illinois Tool Works, Inc. | Impression roller and use of the same |
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 |
EP1072406B1 (de) | 2005-07-13 |
JP2001038947A (ja) | 2001-02-13 |
ATE299437T1 (de) | 2005-07-15 |
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