WO2008009699A1 - Stochastisch gelaserte filmwalze - Google Patents
Stochastisch gelaserte filmwalze Download PDFInfo
- Publication number
- WO2008009699A1 WO2008009699A1 PCT/EP2007/057420 EP2007057420W WO2008009699A1 WO 2008009699 A1 WO2008009699 A1 WO 2008009699A1 EP 2007057420 W EP2007057420 W EP 2007057420W WO 2008009699 A1 WO2008009699 A1 WO 2008009699A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- roller
- ink
- depressions
- film roller
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/26—Construction of inking rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N7/00—Shells for rollers of printing machines
- B41N7/06—Shells for rollers of printing machines for inking rollers
Definitions
- the invention relates to film rolls, to processes for producing the film roll and to their use.
- rollers are used to transfer the ink from the ink fountain.
- the first roller, the ink fountain roller or the ink fountain roller picks up ink from the ink fountain and transfers it to a film roller, the distance between the ink fountain roller and the film roller ensuring that only a certain proportion of the ink provided is transferred further.
- the ink fountain roller and the film roller and between the film roller and the subsequent transfer roller the ink must split. Often, paint is sprayed at the cleavage sites. Due to the incomplete removal of the ink from the film roller, the roller will become over-charged with ink, which will be thrown off in an uncontrolled manner.
- the prior art has already used textured surfaces, e.g. Film rolls with diamond profiles and spiral groove profiles; see DE 101 03 842.
- the structured surfaces of respective film rolls serve essentially to control the quantities of ink which are transferred between the rollers.
- Various gradients of such profiles have been tested which have some impact on the problem of paint misting without any tangible progress being made.
- problems occurred with uneven color transfer or a certain banding, which were attributed to the surface structures.
- increased abrasion of the elastomeric roller employed on the film roll and significant difficulties have been found in cleaning structured rolls.
- EP 0 594 016 Bl describes priming rollers with a stochastic pattern in gravure printing.
- the object of the present invention was to provide an apparatus and a method with which the stated disadvantages of the prior art are overcome.
- the object is achieved by a film roller for offset printing with a surface with elevations and depressions, wherein the elevations and depressions together form an irregular, random pattern.
- the film roll has irregular, random patterns which form elevations and depressions on the surface.
- Such patterns are also referred to as stochastic patterns. They arise, for example, in which are removed by a given material on a roll surface by a processing step smaller areas and the machining direction of the tool changes at random; ie e.g. computer-controlled the decision on the change of direction is made at random.
- stochastic patterns arise, for example, in which are removed by a given material on a roll surface by a processing step smaller areas and the machining direction of the tool changes at random; ie e.g. computer-controlled the decision on the change of direction is made at random.
- the depressions form passages on the surface. It creates labyrinth-like structures.
- the elevations form - as in the figures - coherent areas.
- the film roll according to the invention has no regular patterns.
- the structure is not only defined by eg a diameter or a depth, but in addition the structure motif randomly changes its directional course on the surface.
- US 4,763,041 describes a film roll in which cylindrically shaped holes are introduced by means of a pulsed laser. In contrast to the present invention, although this results in irregular holes but not in an irregular random pattern on the surface of the roller. In addition, only holes are formed so that - in contrast to the invention - no surveys arise.
- FR 2,449,484 describes a roller which has cracks or crevices in partial areas of the surface, the surface being made of metal and up to 30% of the surface being covered with cracks. Thus, FR 2,449,484 does not describe any elevations and depressions, since the polished area has no elevations relative to the roll surface.
- EP 0 662 394 describes overlays of several regular patterns. Although it is described that the tool used to apply the patterns may have an irregular shape. However, even with this tool, the regular pattern remains on the surface.
- the film roll according to the invention preferably has a roughness R z measured according to DIN EN ISO 4287 in the range of 200 to 1,000 .mu.m, preferably 400 to 700 .mu.m.
- the surface of the film roll may consist of different materials, in particular polymers such as polyamide, polyurethane or copper, ceramic or matt chrome are suitable. Rollers of at least 50% polyamide are particularly preferred.
- the filling volume is also suitable for describing the surface structure.
- a topography image is examined, with the middle level of the topography image being assigned the height value 0.
- a filling volume can be calculated, which is a measure of the surface structure.
- This filling volume is then represented as volume (free volume) per area and is referred to below as Vi.
- Preferred free volumes Vi are between 0.005 and 0.5, more preferably between 0.01 and 0.15 mm 3 / mm 2 . - A -
- V 2 It is also possible to calculate a filling volume up to the complete filling of the surface, ie between lowest and highest profile value. This is referred to below as V 2 .
- Preferred volumes are between 0.02 to 1.5 mm 3 / mm 2, more preferably between 0.06 to 1.0 mm 3 / mm 2.
- FIGS. 5 and 6 show the differences between the filling volumes Vi and V 2 on the basis of a sketch.
- the calculated volume is represented by the gray areas.
- the arithmetic mean of the width of the gears is 0.1 and up to 1 mm.
- the arithmetic mean of the depth of the gears is in the range between 0.1 and 0.5 mm.
- the width of the webs in the range of 0.3 to 8 mm, preferably 0.5 to 3 mm. It is preferred that the width and depth are matched so that the arithmetic mean of the width and the depth are in the ratio between 3: 1 and 1: 2.
- the protrusions and depressions form an irregular random pattern having a lower free volume in the peripheral areas of the film roll. This is particularly useful when in the printing press so-called “narrow webs" are driven, i. Webs that do not occupy the entire width of the roller. This causes problems that in the edge areas in which the colors are not removed, the transferred color is thrown off, dries, etc.
- a lower free volume is preferably present in the edge regions of the film rolls, for example by 20% less than in the middle region, preferably by 10% less than in the middle of the roll.
- this lower free volume can be compensated by opening the ink keys and otherwise by an increased color guide in these edge regions.
- the invention furthermore relates to an inking unit which comprises the film roller according to the invention.
- Ink units usually include a variety of rollers, with which the amount and quality of the paint job is controlled.
- the inking unit according to the invention therefore comprises, in addition to a Farbduktor, the film roll according to the invention and an applicator roll optionally further rolls, as they are known in the art.
- the invention further provides a process for producing the film roll according to the invention comprising the step of treating the surfaces with a laser to produce an irregular, random pattern of elevations and depressions.
- the invention further provides a process for transporting an ink in offset printing, comprising the following steps:
- the film roller according to the invention and the inventive method that the color transport is carried out with a better efficiency. This means that less ink remains on the film roll, which ultimately results in less spatter because less ink needs to be transported.
- the film rolls according to the invention can be cleaned well.
- the stochastic pattern leads to a lesser abrasion with the film rollers according to the invention.
- care is taken in the formation of the irregular random pattern that no areas with a length of> 3 mm remain of elevations that exist in a range of 0 to 45 ° to the axis of rotation of the roller stay. In this way it is prevented that webs arise which are transverse to the running direction of the roller over a larger area.
- a roll with a polyamide surface coating diameter of about 55 mm was irradiated with 400 W using a CO 2 industrial laser (VWA 1200 from Baasel, Starnberg). For this purpose, the roller was rotated and the laser was guided stochastically over the surface. From the surfaces thus obtained, the topography was measured.
- Figures Ia and Ib show a corresponding
- the Rz measured according to DIN EN ISO 4287 was 415 ⁇ m.
- a corresponding profile was measured on a cutting line in a topographical image.
- the filling volumes were calculated as the volume from the wells to the zero line (center between deepest well and highest bump). Based on an area of 50.69 mm 2 , the free volume was 2.192 mm 3 . This corresponds to a free volume Vi of 0.043 mm 3 / mm 2 , V 2 of 0.182 mm 3 / mm 2 .
- Example 2 a roll was treated as in Example 1 with 400 W again.
- the profile around the profile was extended by computer modulations by 75%, so that the valleys and surveys are wider.
- Figures 2a and 2b show a corresponding representation of the profile thus obtained. Again, the roll was measured. The roughness was Rz according to DIN EN ISO 4287 496 ⁇ m. Subsequently, a topography uptake was again carried out and measured as described in Example 1. The result was a volume of 2.617 mm 3 on an area of 50.69 mm 2 . This in turn corresponds to a free volume Vi of 0.052, a free volume V 2 of 0.264 mm 3 / mm 2.
- a roll as in Example 1 was treated with a power of 600 W, so that the depressions are made deeper.
- FIGS. 3a and 3b show a corresponding topography image.
- the roughness values were also measured thereon.
- the result was a Rz according to DIN EN ISO 4287 of 613 microns.
- a Topographiement was measured in terms of filling volume. This is shown in FIGS. 4a and 4b.
- the result was a volume of 3.511 mm 3 on an area of 50.69 mm 2 . This corresponds to a free volume of 0.069 mm 3 / mm 2 , the free volume V 2 0.292 mmVmm 2 .
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009519977A JP5543204B2 (ja) | 2006-07-19 | 2007-07-18 | 確率的にレーザー処理されたフィルムローラー |
US12/309,420 US8561536B2 (en) | 2006-07-19 | 2007-07-18 | Stochastically lasered film roller |
DK07787681.1T DK2040931T3 (en) | 2006-07-19 | 2007-07-18 | STOKASTIC LASED FILM ROLL |
SI200731988T SI2040931T1 (en) | 2006-07-19 | 2007-07-18 | Stochastic laser foil roller |
CN2007800272911A CN101489799B (zh) | 2006-07-19 | 2007-07-18 | 随机激光处理的胶辊 |
PL07787681T PL2040931T3 (pl) | 2006-07-19 | 2007-07-18 | Przybieracz grawerowany laserowo stochastycznie |
ES07787681.1T ES2650975T3 (es) | 2006-07-19 | 2007-07-18 | Rodillo distribuidor de película tratado con láser estocástico |
EP07787681.1A EP2040931B1 (de) | 2006-07-19 | 2007-07-18 | Stochastisch gelaserte filmwalze |
CY20171101248T CY1119627T1 (el) | 2006-07-19 | 2017-11-28 | Κυλινδρος υμενιου υποβληθεις σε στοχαστικη επεξεργασια laser |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06117496 | 2006-07-19 | ||
EP06117496.7 | 2006-07-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008009699A1 true WO2008009699A1 (de) | 2008-01-24 |
Family
ID=37433866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/057420 WO2008009699A1 (de) | 2006-07-19 | 2007-07-18 | Stochastisch gelaserte filmwalze |
Country Status (14)
Country | Link |
---|---|
US (1) | US8561536B2 (de) |
EP (1) | EP2040931B1 (de) |
JP (1) | JP5543204B2 (de) |
CN (1) | CN101489799B (de) |
AR (1) | AR061915A1 (de) |
CY (1) | CY1119627T1 (de) |
DK (1) | DK2040931T3 (de) |
ES (1) | ES2650975T3 (de) |
HU (1) | HUE037324T2 (de) |
PL (1) | PL2040931T3 (de) |
PT (1) | PT2040931T (de) |
SI (1) | SI2040931T1 (de) |
TW (1) | TWI461306B (de) |
WO (1) | WO2008009699A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008043957A1 (de) | 2008-11-21 | 2010-05-27 | Koenig & Bauer Aktiengesellschaft | Rasterwalze und Verfahren zu deren Herstellung |
CN101837694A (zh) * | 2009-03-13 | 2010-09-22 | 海德堡印刷机械股份公司 | 用于制造伪随机的图文面的方法 |
DE102010007648A1 (de) | 2010-02-11 | 2011-03-10 | Heidelberger Druckmaschinen Ag | Farbwerk einer Druckmaschine |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006037615A1 (de) * | 2006-08-10 | 2008-02-14 | Felix Böttcher Gmbh & Co. Kg | Gummiwalzen mit rauer Oberfläche |
US9308765B2 (en) * | 2009-12-07 | 2016-04-12 | Felix Boettcher Gmbh & Co. Kg | Distributor rollers |
JP6013305B2 (ja) * | 2013-10-30 | 2016-10-25 | 住友理工株式会社 | 紙送り用ローラ |
GB2546748A (en) * | 2016-01-26 | 2017-08-02 | Sandon Global Engraving Tech Ltd | Liquid-bearing articles for transferring and applying liquids |
Citations (8)
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FR2449484A1 (fr) | 1979-02-26 | 1980-09-19 | Epic Prod Int | Cylindre de transfert de fluide, son procede de realisation et son application au systeme de mouillage et encrage utilise dans les presses offset |
US4763041A (en) | 1983-10-24 | 1988-08-09 | Ricoh Company, Ltd. | Dot array fluorescent tube for writing optical information in optical printer |
US4793041A (en) * | 1979-05-03 | 1988-12-27 | Jerome D. Jenkins | Transfer roll with ceramic-fluorocarbon coating containing cylindrical ink holes with round, beveled entrances |
EP0425829A2 (de) * | 1989-11-02 | 1991-05-08 | Heidelberger Druckmaschinen Aktiengesellschaft | Farbbewege-/Reibwalze |
EP0662394A1 (de) | 1992-07-09 | 1995-07-12 | Kinyosha Co. Ltd. | Druckzylinder und Verfahren zur Herstellung |
EP0594016B1 (de) | 1992-10-22 | 1996-01-17 | Felix Böttcher GmbH & Co. KG | Verfahren zur Übertragung flüssiger Medien von einem Festkörper auf einen anderen sowie Vorrichtung zur Durchführung des Verfahrens |
DE19847108A1 (de) * | 1998-10-13 | 2000-04-27 | Windmoeller & Hoelscher | Rasterwalze |
DE10103842A1 (de) | 2000-04-26 | 2001-10-31 | Heidelberger Druckmasch Ag | Farbwerk in einer Druckmaschine |
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US3924313A (en) * | 1974-05-24 | 1975-12-09 | Standex Int Corp | Metal applicator roll |
JPS60144923A (ja) | 1983-12-31 | 1985-07-31 | 関西電力株式会社 | コンデンサ装置 |
JPS60202059A (ja) * | 1984-03-27 | 1985-10-12 | Sharp Corp | コピ−用紙収容ソ−タ |
JPH0353891Y2 (de) * | 1985-09-20 | 1991-11-26 | ||
JP2802073B2 (ja) * | 1987-07-10 | 1998-09-21 | 株式会社金陽社 | インキ受渡しロールの製造方法 |
JPH01234295A (ja) * | 1988-03-15 | 1989-09-19 | Mitsubishi Electric Corp | マーキング装置 |
DE3822692C2 (de) * | 1988-07-05 | 1996-02-15 | Kochsmeier Hans Hermann | Rasterwalze in einem Auftragswerk einer Druckmaschine |
JPH0720741B2 (ja) * | 1988-11-28 | 1995-03-08 | 株式会社東京機械製作所 | ダンプニングローラー、ダンプニングローラーの製造方法および印刷機の湿し水供給装置 |
JPH0357649A (ja) * | 1989-07-25 | 1991-03-13 | Canon Inc | 画像形成装置 |
DE3937749A1 (de) * | 1989-11-14 | 1991-05-16 | Jagenberg Ag | Rakelstange zum volumetrischen dosieren von beschichtungsmaterial |
JP3010403B2 (ja) * | 1992-12-08 | 2000-02-21 | 富士写真フイルム株式会社 | 平版印刷版用支持体及びその製造方法 |
JPH09262965A (ja) * | 1996-03-29 | 1997-10-07 | Toshiba Mach Co Ltd | 印刷機のインキ量調整装置 |
JPH09314810A (ja) * | 1996-06-04 | 1997-12-09 | Komori Corp | 印刷機のローラ |
DE10039279A1 (de) * | 1999-09-09 | 2001-03-15 | Heidelberger Druckmasch Ag | Walze für Druckmaschinen |
JP4184555B2 (ja) * | 1999-10-19 | 2008-11-19 | 大日本印刷株式会社 | レインボー印刷可能なフレキソ印刷方法 |
JP3670564B2 (ja) * | 2000-09-26 | 2005-07-13 | 大日本スクリーン製造株式会社 | 印刷版記録装置、印刷版記録装置を備えた印刷装置、印刷版記録装置に用いられる画像データ作成装置 |
JP4736860B2 (ja) * | 2006-03-03 | 2011-07-27 | 日鉄住金鋼板株式会社 | ロール塗装方法 |
-
2007
- 2007-07-17 TW TW096125989A patent/TWI461306B/zh not_active IP Right Cessation
- 2007-07-18 SI SI200731988T patent/SI2040931T1/en unknown
- 2007-07-18 CN CN2007800272911A patent/CN101489799B/zh not_active Expired - Fee Related
- 2007-07-18 US US12/309,420 patent/US8561536B2/en active Active
- 2007-07-18 DK DK07787681.1T patent/DK2040931T3/en active
- 2007-07-18 PT PT77876811T patent/PT2040931T/pt unknown
- 2007-07-18 WO PCT/EP2007/057420 patent/WO2008009699A1/de active Application Filing
- 2007-07-18 EP EP07787681.1A patent/EP2040931B1/de active Active
- 2007-07-18 JP JP2009519977A patent/JP5543204B2/ja not_active Expired - Fee Related
- 2007-07-18 ES ES07787681.1T patent/ES2650975T3/es active Active
- 2007-07-18 AR ARP070103197A patent/AR061915A1/es not_active Application Discontinuation
- 2007-07-18 HU HUE07787681A patent/HUE037324T2/hu unknown
- 2007-07-18 PL PL07787681T patent/PL2040931T3/pl unknown
-
2017
- 2017-11-28 CY CY20171101248T patent/CY1119627T1/el unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2449484A1 (fr) | 1979-02-26 | 1980-09-19 | Epic Prod Int | Cylindre de transfert de fluide, son procede de realisation et son application au systeme de mouillage et encrage utilise dans les presses offset |
US4793041A (en) * | 1979-05-03 | 1988-12-27 | Jerome D. Jenkins | Transfer roll with ceramic-fluorocarbon coating containing cylindrical ink holes with round, beveled entrances |
US4763041A (en) | 1983-10-24 | 1988-08-09 | Ricoh Company, Ltd. | Dot array fluorescent tube for writing optical information in optical printer |
EP0425829A2 (de) * | 1989-11-02 | 1991-05-08 | Heidelberger Druckmaschinen Aktiengesellschaft | Farbbewege-/Reibwalze |
EP0662394A1 (de) | 1992-07-09 | 1995-07-12 | Kinyosha Co. Ltd. | Druckzylinder und Verfahren zur Herstellung |
EP0594016B1 (de) | 1992-10-22 | 1996-01-17 | Felix Böttcher GmbH & Co. KG | Verfahren zur Übertragung flüssiger Medien von einem Festkörper auf einen anderen sowie Vorrichtung zur Durchführung des Verfahrens |
DE19847108A1 (de) * | 1998-10-13 | 2000-04-27 | Windmoeller & Hoelscher | Rasterwalze |
DE10103842A1 (de) | 2000-04-26 | 2001-10-31 | Heidelberger Druckmasch Ag | Farbwerk in einer Druckmaschine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008043957A1 (de) | 2008-11-21 | 2010-05-27 | Koenig & Bauer Aktiengesellschaft | Rasterwalze und Verfahren zu deren Herstellung |
CN101837694A (zh) * | 2009-03-13 | 2010-09-22 | 海德堡印刷机械股份公司 | 用于制造伪随机的图文面的方法 |
DE102010007648A1 (de) | 2010-02-11 | 2011-03-10 | Heidelberger Druckmaschinen Ag | Farbwerk einer Druckmaschine |
Also Published As
Publication number | Publication date |
---|---|
EP2040931B1 (de) | 2017-09-06 |
TW200821157A (en) | 2008-05-16 |
CY1119627T1 (el) | 2018-04-04 |
JP2009543715A (ja) | 2009-12-10 |
CN101489799A (zh) | 2009-07-22 |
ES2650975T3 (es) | 2018-01-23 |
SI2040931T1 (en) | 2018-04-30 |
HUE037324T2 (hu) | 2018-08-28 |
CN101489799B (zh) | 2012-09-26 |
US8561536B2 (en) | 2013-10-22 |
EP2040931A1 (de) | 2009-04-01 |
AR061915A1 (es) | 2008-10-01 |
US20090320700A1 (en) | 2009-12-31 |
DK2040931T3 (en) | 2017-12-04 |
PL2040931T3 (pl) | 2018-02-28 |
TWI461306B (zh) | 2014-11-21 |
PT2040931T (pt) | 2017-12-12 |
JP5543204B2 (ja) | 2014-07-09 |
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