EP0922590B1 - Druckform aus Keramik - Google Patents
Druckform aus Keramik Download PDFInfo
- Publication number
- EP0922590B1 EP0922590B1 EP98123560A EP98123560A EP0922590B1 EP 0922590 B1 EP0922590 B1 EP 0922590B1 EP 98123560 A EP98123560 A EP 98123560A EP 98123560 A EP98123560 A EP 98123560A EP 0922590 B1 EP0922590 B1 EP 0922590B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing forme
- printing
- depressions
- ceramic
- printing form
- 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.)
- Expired - Lifetime
Links
- 238000007639 printing Methods 0.000 title claims description 39
- 239000000919 ceramic Substances 0.000 title description 16
- 239000000463 material Substances 0.000 claims description 11
- 229910010293 ceramic material Inorganic materials 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000005530 etching Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 238000000608 laser ablation Methods 0.000 description 2
- 238000013532 laser treatment Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- -1 Silicon nitrides Chemical class 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000010017 direct printing Methods 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 238000007649 pad printing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/006—Printing plates or foils; Materials therefor made entirely of inorganic materials other than natural stone or metals, e.g. ceramics, carbide materials, ferroelectric materials
Definitions
- the invention relates to a printing form according to the preamble of the first Claim.
- Printing forms of the type mentioned are used in particular in gravure printing processes used.
- the depressions in the printing form are made in a known manner Etching or engraving is mechanical removal, or more recently generated by laser processing.
- Engraving known from engravings and Etchings, is used for artistic purposes.
- Printing forms are in usually made of metal, such as copper or steel.
- the etching and the laser processing of the metal surfaces is used for the introduction of figurative representations and script used. These methods are suitable especially for industrial use and thus high print runs.
- the etching process has the disadvantage that used etching baths have to be carefully and expensive disposal.
- machining metal surfaces through Laser for the production of printing forms has proven to be disadvantageous in that by melting beyond the surface of the printing form Melting burrs arise which have to be removed afterwards. This subsequent processing is a cost factor. It will also make the Edges of the indentations out of focus.
- the object of the present invention is to present a printing form without the disadvantages listed above is simple and clean to manufacture and one has a long service life with constant print quality.
- a ceramic printing plate according to the invention has a long service life consistent print quality. It is particularly suitable for the production of Clichés.
- the ones required for the representations to be printed and the font As a rule, indentations can be made using all suitable for ceramics Manufacturing process.
- the sharp ones that arise during manufacture Contour edges ensure clean reproduction with sharp edges the representations and texts reproduced in print.
- the Grain diameter of the ceramic material is less than 10 microns.
- the grain diameter is below 5 ⁇ m. ever the smaller the grain diameter, the higher the possible bending strength of the material, the achievable surface quality and the contour accuracy.
- Laser treatment method can be used with which, for example Labeling of the ball heads of ceramic endoprostheses of the hip joint he follows. Through this labeling carried out by means of a controlled Readable depressions are created by the laser beam. This procedure for Marking the ball heads has already proven itself, but was not for used this inventive purpose. The removal of material from the wells is about 15 to 25 ⁇ m.
- the laser ablation process differs significantly from that the method known from EP 0 741 117 A1. There is a specially endowed Surface of a ceramic material treated with a laser beam so that this surface changes color. This will make the ceramic surface creates an image directly, but not from the surface of the ceramic reproduce. For this reason, laser treatment differs the ceramic surface from the above-mentioned script essentially from processing a ceramic surface for material removal.
- the surface of the printing form largely determines the print quality. Out for this reason, it is advantageous if the surface of the artwork is at least finely ground and has a roughness depth of around 0.5 ⁇ m lies. High sharpness of contours and good cleaning of the surfaces which the color is not intended for print reproduction is marked with a polished surface whose surface roughness Ra is less than 0.5 ⁇ m.
- the ceramic artwork can be plate-shaped as well be cylindrical. It offers the shape of the previously known Printing forms. All high-performance ceramics are suitable as a material. To include, for example, ceramics based on aluminum oxide or zirconium oxide. Silicon nitrides and carbides are also suitable as materials.
- the production a printing form according to the invention requires only one Machining process that involves using an environmentally friendly Procedure, without the need to dispose of environmentally hazardous Waste materials, can be carried out. In addition, there is no further post-processing required.
- the sharp-edged contour of the representations and the writing as well as the high one Quality and low roughness of the surface ensure that a cleaner Ink application to the medium to be printed, either directly or indirectly, is guaranteed.
- direct printing for example when applying on paper, is due to the low affinity of the color for the ceramic, a clean removal guaranteed the color from the printing form.
- indirect Printing process for example in the pad printing process. With these Printing process, the color is first transferred from the printing form to one Intermediate carrier, for example a rubber roller, and only then from this transfer the surface to be printed.
- the printing form 1 is a plate made of aluminum oxide, Al2O3.
- the wells 4 are on the recognizable broken lower right corner of printing form 1. Farther the sharp edges 5 of the contours of the depressions 4 can be seen.
- FIG. 2 shows a roller-shaped printing form 10. It rotates about an axis 11 by means of a drive, not shown here, to first change the color to a Intermediate carrier or transfer directly to the surface to be printed.
- the Surface 12 is also polished. 13 for printing the representations the depressions 14 filled with paint.
- the material of the present Roller-shaped printing form 10 can, for example, be made of zirconium oxide ceramic consist. It is particularly good with regard to the fatigue strength mechanical properties.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Laser Beam Processing (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Printing Plates And Materials Therefor (AREA)
Description
- Figur 1
- eine Druckform in Form einer Platte mit einer Schrift als Darstellung,
- Figur 2
- zeigt eine walzenförmige Druckform, geschnitten, mit weiteren Darstellungen.
Claims (9)
- Druckform (1; 10), in die zu druckende Darstellungen und Schrift (3; 13) durch Materialabtrag als Vertiefungen (4; 14) eingearbeitet sind, wobei die Vertiefungen für das Drucken mit Farbe aufgefüllt sind und die Farbe direkt oder indirekt auf die zu bedruckende Fläche übertragbar ist, dadurch gekennzeichnet, daß die Druckform (1; 10) ein Vollkörper aus Keramik ist und dass der Korndurchmesser des keramischen Werkstoffs der Druckform (1; 10) kleiner als 10 µm ist.
- Druckform nach Anspruch 1, dadurch gekennzeichnet, daß der Korndurchmesser des keramischen Werkstoffs der Druckform (1; 10) kleiner als 5 µm ist.
- Druckform nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Vertiefungen (4; 14) der zu druckenden Darstellungen und der Schrift (3; 13) durch einen Laserstrahl aus der Oberfläche (2; 12) der Druckform (1; 10) herausgearbeitet worden sind.
- Druckform nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Materialabtrag der Vertiefungen (4; 14) etwa 15 bis 25 µm beträgt.
- Druckform nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ihre Oberfläche (2; 12) feingeschliffen ist.
- Druckform nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ihre Oberfläche (2; 12) poliert ist.
- Druckform nach Anspruch 6, dadurch gekennzeichnet, daß die Oberfläche (2; 12) eine Rauhtiefe Ra von kleiner als 0,5 µm aufweist.
- Druckform nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß sie (1) plattenförmig ist.
- Druckform nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß sie (10) walzenförmig ist.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19754685 | 1997-12-10 | ||
| DE19754685 | 1997-12-10 | ||
| DE19755202A DE19755202A1 (de) | 1997-12-10 | 1997-12-12 | Druckform aus Keramik |
| DE19755202 | 1997-12-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0922590A1 EP0922590A1 (de) | 1999-06-16 |
| EP0922590B1 true EP0922590B1 (de) | 2002-07-24 |
Family
ID=26042315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98123560A Expired - Lifetime EP0922590B1 (de) | 1997-12-10 | 1998-12-10 | Druckform aus Keramik |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0922590B1 (de) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5047116A (en) * | 1989-05-31 | 1991-09-10 | Union Carbide Coatings Service Technology Corporation | Method for producing liquid transfer articles |
| DE3925509C2 (de) * | 1989-08-02 | 1994-03-03 | Wetzel Walter Gmbh | Druckscheibe zum Bedrucken von Kabeln |
| NL9101971A (nl) * | 1991-11-25 | 1993-06-16 | Stork Screens Bv | Metalen plaat ter vervaardiging van een diepdrukhuls en werkwijze ter vervaardiging daarvan. |
| DE19507827C2 (de) * | 1995-02-22 | 1999-03-25 | Hartmut Frerichs | Verfahren zur Herstellung einer Druckform für den Offset- oder Tiefdruck |
| GB2303094A (en) * | 1995-07-12 | 1997-02-12 | Bernard John Boyle | Laser engraved ceramic gravure cylinder |
-
1998
- 1998-12-10 EP EP98123560A patent/EP0922590B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| Kirk-Othmer: Encyklopedia of Chemical Technology, 4. Ausgabe, Band 5, Seiten 599 und 600 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0922590A1 (de) | 1999-06-16 |
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