EP0884175A2 - Flexographic printing apparatus for application to offset printing units - Google Patents
Flexographic printing apparatus for application to offset printing units Download PDFInfo
- Publication number
- EP0884175A2 EP0884175A2 EP98830347A EP98830347A EP0884175A2 EP 0884175 A2 EP0884175 A2 EP 0884175A2 EP 98830347 A EP98830347 A EP 98830347A EP 98830347 A EP98830347 A EP 98830347A EP 0884175 A2 EP0884175 A2 EP 0884175A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- anilox
- cylinder
- flexographic printing
- printing apparatus
- plate bearing
- 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.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
Definitions
- the present invention relates to a flexographic printing apparatus for application to offset printing units.
- offset printing units or assemblies carry out an indirect type of printing and they are not designed for easily carrying out other types of printing processes such as the flexographic printing, which is typically a direct type of printing.
- the aim of the present invention is to overcome the above mentioned drawbacks, by providing a flexographic printing apparatus designed for application to offset printing units, for quickly and simply transforming a conventional offset printing unit into a flexographic printing machine, with the possibility of easily selecting the type and amount of inks to be applied.
- a main object of the present invention is to provide such a flexographic printing apparatus allowing to automatically replace the anilox cylinders or rollers engaging with the printing plate, thereby providing a printing machine very flexible from the operating standpoint.
- Another object of the present invention is to provide such a flexographic printing apparatus which, owing to its specifically designed construction, is very reliable and safe in operation.
- Yet another object of the present invention is to provide such a flexographic printing apparatus, for application to offset printing units, which can be easily made starting from easily available elements and materials and which, moreover, is very competitive from a mere economic standpoint.
- a flexographic printing apparatus for application to offset printing units, characterized in that said apparatus comprises, at a printing plate bearing cylinder of an offset printing machine, a supporting unit for supporting a plurality of anilox cylinders, which can be caused to selectively contact said printing plate bearing cylinder.
- an offset printing unit generally indicated by the reference number 1 is herein illustrated; said offset printing unit comprises, in a per se known manner, a sheet feeding assembly 2, provided for conveying the sheet to be printed upon to a transfer roller 3, which is coupled to a printing cylinder 4, in turn operatively associated with an output sheet transfer cylinder 5; on this cylinder 5 a chain 6 is entrained, said chain including a plurality of grippers for conveying the sheet inside a drying assembly or unit, generally indicated by the reference number 7.
- the main feature of the invention is that, at said printing plate bearing cylinder 9 of the offset printing unit, a flexographic printing apparatus generally indicated by the reference number 10 is provided.
- Said apparatus 10 comprises, substantially, a carousel element 11, including two end flanges 12, which peripherally support the end portions of a plurality of anilox cylinders 13 which, in the embodiment being disclosed are four, but which could be pbviously provided in any desired number.
- the anilox cylinders have a cylinder surface which has been preliminarily subjected to any desired surface treatments, to provide therein small cells or hollows, in which the printing ink will deposit.
- the anilox cylinders 13 are engaged, at their end portions, by a slide 20 designed for bringing each individual anilox cylinder 13 to the printing plate bearing cylinder 9.
- the anilox cylinder 13 contacting said printing plate bearing cylinder 9 is supported, at the end portions thereof, by truncated cone-shaped plug-in elements 21, clearly shown in Figure 4, which can be so driven as to engage with and disengage from a respective anilox cylinder, while providing a perfect centering and locating of said cylinder.
- an ink application unit 30 operates, said ink application unit being provided, at its contact end portions, with doctor blades for properly spreading the desired inks on the anilox cylinder, which inks could be water-based inks, U.V. based inks, as well as "flexo-inks" such as of a gold type.
- said inks will have a comparatively high fluidity, and will include therein very volatile solvents so as to facilitate the drying of said inks.
- the anilox cylinder will be rotatively driven by a driving geared unit 35, thereby spreading the ink over the printing plate to directly print the sheet.
- holding arms indicated by the reference number 40, provided for engaging the end portions of the anilox cylinders or rollers in order to properly hold said cylinders on their supports, while allowing said cylinders to be easily brought to their operating positions.
- operating units can also be mounted on the disclosed flexographic apparatus, such as embossing units, recording-embossing units as well as numbering, punching units and so on.
- scrapable inks could be also used, on paper sheets having a basic weight from 60 to 80 grams and with a maximum thickness of 12/10 mm.
- the used materials provided that they are compatible to the intended application, as well as the contingent size and shapes, can be any, depending on requirements.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Presses (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Printing Methods (AREA)
Abstract
Description
and
Claims (8)
- A flexographic printing apparatus for application to offset printing units, characterized in that said apparatus comprises, at a printing plate bearing cylinder of an offset printing machine, a supporting unit for supporting a plurality of anilox cylinders, which can be caused to selectively contact said printing plate bearing cylinder.
- A flexographic printing apparatus, according to the preceding claims, characterized in that said supporting unit comprises two heads which are provided, on the periphery thereof, with recesses for housing therein the end portions of a plurality of anilox cylinders.
- A flexographic printing apparatus, according to the preceding claims, characterized in that said anilox cylinders are provided in a number of four and that said supporting unit is a rotary supporting unit.
- A flexographic printing apparatus, according to one or more of the preceding claims, characterized in that said apparatus further comprises a driving slide for bringing an anilox cylinder from said supporting unit to contact said printing plate bearing cylinder.
- A flexographic printing apparatus, according to one or more of the preceding claims, characterized in that said apparatus further comprises supporting assemblies for supporting said anilox cylinder in a contact relationship with said printing plate bearing cylinder, having a truncated cone configuration, for axially engaging and centering the anilox cylinder.
- A flexographic printing apparatus, according to one or more of the preceding claims, characterized in that said apparatus further comprises a driving geared unit for turning said anilox cylinder for inking said printing plate.
- A flexographic printing apparatus, according to one or more of the preceding claims, characterized in that said apparatus further comprises an ink application unit coupled to said anilox cylinder in turn coupled to said printing plate bearing cylinder, and comprising moreover a pair of doctor blades for delimiting an inking chamber and metering the ink.
- A flexographic printing apparatus, specifically designed for application to offset printing units, according to one or more of the preceding claims, and substantially as broadly disclosed and illustrated and for the intended objects.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI971320 | 1997-06-04 | ||
IT97MI001320A IT1292083B1 (en) | 1997-06-04 | 1997-06-04 | EQUIPMENT FOR FLEXOGRAPHIC PRINTING APPLICABLE TO OFFSET PRINTING UNITS |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0884175A2 true EP0884175A2 (en) | 1998-12-16 |
EP0884175A3 EP0884175A3 (en) | 1999-05-06 |
Family
ID=11377293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98830347A Withdrawn EP0884175A3 (en) | 1997-06-04 | 1998-06-04 | Flexographic printing apparatus for application to offset printing units |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0884175A3 (en) |
IT (1) | IT1292083B1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6347891B1 (en) * | 1995-04-26 | 2002-02-19 | Ohio Electronic Engravers, Inc. | Engraving system and method comprising different engraving devices |
EP1184170A2 (en) * | 2000-08-30 | 2002-03-06 | MAN Roland Druckmaschinen AG | Device for coating printing ink onto a printing support |
WO2002085627A1 (en) * | 2001-04-20 | 2002-10-31 | Cimco, S.L. | Improved flexographic printer |
WO2004087422A1 (en) * | 2003-04-01 | 2004-10-14 | Tresu Anlaeg A/S | Printing with flexographic inks and lacquer |
CN101879810A (en) * | 2010-07-07 | 2010-11-10 | 高华瑞 | Poker printing system with gravure printing and flexo printing combination |
EP2604430A3 (en) * | 2011-12-16 | 2016-06-01 | Heidelberger Druckmaschinen AG | Flexographic printing process |
DE102019100308A1 (en) * | 2019-01-08 | 2020-07-09 | Koenig & Bauer Ag | Application unit with positioning device and storage device |
WO2020143933A1 (en) | 2019-01-08 | 2020-07-16 | Koenig & Bauer Ag | Application assembly with positioning device |
WO2020143931A1 (en) | 2019-01-08 | 2020-07-16 | Koenig & Bauer Ag | Application assembly with positioning device and storage device |
WO2020143932A1 (en) | 2019-01-08 | 2020-07-16 | Koenig & Bauer Ag | Application assembly with positioning device and storage device |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3183045A (en) * | 1963-02-11 | 1965-05-11 | Hoe & Co R | Roller socket mounting |
GB1382352A (en) * | 1971-08-09 | 1975-01-29 | Windmoeller & Hoelscher | Convertible printing mechanism |
FR2485990A1 (en) * | 1980-07-03 | 1982-01-08 | Holweg Const Mec | Automatic loading feed for flexographic printing cylinders - has lifting and sliding brackets actuated by hydraulic cylinders |
DE3116504A1 (en) * | 1981-04-25 | 1982-11-11 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | "ROLL ROTATION PRINTING MACHINE" |
DE3906648A1 (en) * | 1988-03-25 | 1989-10-05 | Polygraph Leipzig | Application unit for printing machines |
DE4238672A1 (en) * | 1991-11-21 | 1993-05-27 | Schiavi Cesare Costr Mec | |
US5463950A (en) * | 1993-02-12 | 1995-11-07 | Cuir; Jean-Pierre | Printing machine comprising at least one cylinder with double displacement |
EP0741025A2 (en) * | 1995-05-04 | 1996-11-06 | DeMoore, Howard W. | Retractable inking/coating apparatus having ferris movement between printing units |
-
1997
- 1997-06-04 IT IT97MI001320A patent/IT1292083B1/en active IP Right Grant
-
1998
- 1998-06-04 EP EP98830347A patent/EP0884175A3/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3183045A (en) * | 1963-02-11 | 1965-05-11 | Hoe & Co R | Roller socket mounting |
GB1382352A (en) * | 1971-08-09 | 1975-01-29 | Windmoeller & Hoelscher | Convertible printing mechanism |
FR2485990A1 (en) * | 1980-07-03 | 1982-01-08 | Holweg Const Mec | Automatic loading feed for flexographic printing cylinders - has lifting and sliding brackets actuated by hydraulic cylinders |
DE3116504A1 (en) * | 1981-04-25 | 1982-11-11 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | "ROLL ROTATION PRINTING MACHINE" |
DE3906648A1 (en) * | 1988-03-25 | 1989-10-05 | Polygraph Leipzig | Application unit for printing machines |
DE4238672A1 (en) * | 1991-11-21 | 1993-05-27 | Schiavi Cesare Costr Mec | |
US5463950A (en) * | 1993-02-12 | 1995-11-07 | Cuir; Jean-Pierre | Printing machine comprising at least one cylinder with double displacement |
EP0741025A2 (en) * | 1995-05-04 | 1996-11-06 | DeMoore, Howard W. | Retractable inking/coating apparatus having ferris movement between printing units |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6347891B1 (en) * | 1995-04-26 | 2002-02-19 | Ohio Electronic Engravers, Inc. | Engraving system and method comprising different engraving devices |
EP1184170A2 (en) * | 2000-08-30 | 2002-03-06 | MAN Roland Druckmaschinen AG | Device for coating printing ink onto a printing support |
EP1184170A3 (en) * | 2000-08-30 | 2003-01-29 | MAN Roland Druckmaschinen AG | Device for coating printing ink onto a printing support |
WO2002085627A1 (en) * | 2001-04-20 | 2002-10-31 | Cimco, S.L. | Improved flexographic printer |
WO2004087422A1 (en) * | 2003-04-01 | 2004-10-14 | Tresu Anlaeg A/S | Printing with flexographic inks and lacquer |
US7497161B2 (en) | 2003-04-01 | 2009-03-03 | Tresu Anlaeg A/S | Printing with flexographic inks and lacquer |
CN101879810A (en) * | 2010-07-07 | 2010-11-10 | 高华瑞 | Poker printing system with gravure printing and flexo printing combination |
CN101879810B (en) * | 2010-07-07 | 2012-03-21 | 高华瑞 | Poker printing system with gravure printing and flexo printing combination |
EP2604430A3 (en) * | 2011-12-16 | 2016-06-01 | Heidelberger Druckmaschinen AG | Flexographic printing process |
DE102019100308A1 (en) * | 2019-01-08 | 2020-07-09 | Koenig & Bauer Ag | Application unit with positioning device and storage device |
WO2020143933A1 (en) | 2019-01-08 | 2020-07-16 | Koenig & Bauer Ag | Application assembly with positioning device |
WO2020143931A1 (en) | 2019-01-08 | 2020-07-16 | Koenig & Bauer Ag | Application assembly with positioning device and storage device |
WO2020143932A1 (en) | 2019-01-08 | 2020-07-16 | Koenig & Bauer Ag | Application assembly with positioning device and storage device |
US11390068B2 (en) | 2019-01-08 | 2022-07-19 | Koenig & Bauer Ag | Application unit with positioning device and magazine |
CN115551716A (en) * | 2019-01-08 | 2022-12-30 | 柯尼格及包尔公开股份有限公司 | Inking assembly with positioning device and storage device |
CN115551716B (en) * | 2019-01-08 | 2023-10-03 | 柯尼格及包尔公开股份有限公司 | Inking assembly with positioning device and storage device |
Also Published As
Publication number | Publication date |
---|---|
ITMI971320A1 (en) | 1998-12-04 |
EP0884175A3 (en) | 1999-05-06 |
IT1292083B1 (en) | 1999-01-25 |
ITMI971320A0 (en) | 1997-06-04 |
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