EP3615346A1 - Method for printing non-absorbent substrates with a water-based ink - Google Patents
Method for printing non-absorbent substrates with a water-based inkInfo
- Publication number
- EP3615346A1 EP3615346A1 EP18721718.7A EP18721718A EP3615346A1 EP 3615346 A1 EP3615346 A1 EP 3615346A1 EP 18721718 A EP18721718 A EP 18721718A EP 3615346 A1 EP3615346 A1 EP 3615346A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ink
- substrates
- substrate
- surface tension
- ink drops
- 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
- 239000000758 substrate Substances 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 230000002745 absorbent Effects 0.000 title claims abstract description 12
- 239000002250 absorbent Substances 0.000 title claims abstract description 12
- 230000008569 process Effects 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000001311 chemical methods and process Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 2
- 239000005028 tinplate Substances 0.000 claims description 2
- 230000005661 hydrophobic surface Effects 0.000 claims 1
- 239000002966 varnish Substances 0.000 claims 1
- 239000000976 ink Substances 0.000 description 56
- 239000003570 air Substances 0.000 description 10
- 230000007480 spreading Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000001035 drying Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 108700031620 S-acetylthiorphan Proteins 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0047—Digital printing on surfaces other than ordinary paper by ink-jet printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0011—Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0058—Digital printing on surfaces other than ordinary paper on metals and oxidised metal surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0064—Digital printing on surfaces other than ordinary paper on plastics, horn, rubber, or other organic polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0076—Digital printing on surfaces other than ordinary paper on wooden surfaces, leather, linoleum, skin, or flowers
Definitions
- the invention relates to a method for printing non-absorbent substrates with a water-based ink according to the preamble of claim 1 and a method for operating a digital printing machine with at least one inkjet printhead according to claim 21.
- US Pat. No. 9,573,349 B1 discloses a method for printing non-absorbent substrates with a water-based ink, in which ink droplets are applied to the respective substrate using substrates each having a surface tension of less than 45 mN / m, in which the surface tension of the substrates to be printed is increased in each case to a value of at least 45 mN / m before the application of the ink drops, in which case the ink droplets are then applied to the respective substrate having the increased surface tension.
- Drying temperature range between 40 ° C and 100 ° C and for the exposure time a range between 0.2 s and 10 s is proposed.
- CH 703 704 A1 a printing device for printing fabrics in the form of whiteboard with at least one ink is known, the surface tension of these fabrics is smaller than the surface tension of the ink, comprising at least one activatable printing unit and this at least one activatable printing unit downstream Endtrockenstrom to the
- the radiation source is an elongated UV gas discharge tube or an elongate infrared radiator.
- DE 10 2012 017 538 A1 discloses a method for treating the surface of objects with fluids, in which the fluid is applied by means of a computer-controlled movable first tool and subsequently treated further with the second computer-controlled movable tool, wherein the time delay between the application of the Fluid is adapted to the object and the subsequent further treatment to the spreading behavior of the fluid.
- the invention is based on the object, a method for printing non-absorbent substrates with a water-based ink and a method for operating a
- the advantages that can be achieved with the invention are, in particular, that it is not necessary to know the actual wetting-influencing properties of the surface of the substrates to be printed prior to printing, but that the substrates to be printed preferably immediately before their Printing in a state good, ie at least partial to very good, ie
- Another advantage is a very shallow print with a low haptic ink buildup, i. H. a low relief formation, and a pressure with a high gloss level, whereby z. B. in the packaging market frequently asked requirements are met in a simple manner. Moreover, a transformation of such printed substrates without disturbing abrasion in the forming machine is made possible. Likewise, this is a good prerequisite for overpainting and a low and therefore environmentally friendly ink application with water as an environmentally friendly solvent.
- non-wicking substrates in an industrial printing process with at least one water-based ink.
- These substrates are, for. B to preferably consisting of a solid particular flat substrates, for. B. substrates each of a metallic material, in particular sheet metal plates, for. B. from a steel sheet or from a tinplate or from an i. d. R. surface oxidized aluminum material.
- non-absorbent substrates come from particular pre-painted wood, made of a plastic or a composite material into consideration, provided that these substrates a hot air contact with a duration of a maximum of one second harmless, z. B. survive dimensionally stable.
- the substrates are preferably formed as plates or sheets, they can, for. B. but also be web-shaped or each formed as a round body.
- metallic substrates are z. B. with a primer, z. B. with a white background, and / or pre-coated with a paint. Just these substrates have z. As an oiled or greased or treated with a corrosion inhibitor surface. The surface of the substrates to be printed is particularly hydrophobic educated. For printing these substrates is preferably a z. B.
- an ink without photoinitiators is preferably used.
- As substrates with a non-polar surface and for printing this surface uses a polar ink.
- the respective ink is applied in each case in the form of ink drops on the respective substrate, in particular by the use of at least one of the
- the ink drops z. B. in a raster printing z. B. each applied in a dot density of at least 360 dpi, preferably of 600 dpi to the respective substrate.
- the ink droplets are usually applied in exact positions on the relevant substrate in a grid having a plurality of positions. It can be provided that ink droplets of variable size and / or that ink droplets with different shades and / or that ink droplets in
- color dots are selected from a base color set, e.g. B. CMYK used.
- the surface tension of the respective substrates must be at least as great as the surface tension of the ink used. Only in this way can at least partial wetting of the respective surface of the respective substrates take place with the envisaged ink. Otherwise, they will attract to the non-absorbent surface of the substrates in question applied ink drops together and no wetting is possible. If at all, then arises at insufficient surface tension of the substrates in question rather an at least unclear, especially blurred or pale or pale and thus useless print image.
- the surface tension of the respective substrates and the surface tension of the ink used are usually temperature-dependent. Other environmental conditions such. As the humidity or certain surface properties of the respective substrates such as their roughness and / or their pretreatment and / or their degree of contamination affect the wettability of the respective surface of these substrates.
- the surface tension of solid substrates may, for. B. be determined with commercially available test inks.
- the surface tension of a water-based ink may, for. B. using the ring method of Lecomte De Noüy or using the plate method of Wilhelmy or using the ironing method of Lenard with a tensiometer or by the capillary effect or approximately by a comparative measurement with test inks are determined.
- Oily or greasy surfaces have a surface tension of about 30 mN / m.
- the present invention contemplates that substrates used in air with a temperature of 20 ° C each have a surface tension z. B. of less than 50 mN / m, preferably less than 45 mN / m. In any case, in each case at the same room temperature of z. B. 20 ° C, the surface tension of the substrates provided for printing less than the surface tension of the water contained as a solvent in the ink and usually also less than the surface tension of the ink used for printing itself.
- z. B. in the printing process exporting machine, z.
- printing press in particular a pressure formless working at least one inkjet print head having digital printing machine, but in any case before the application of the ink drops, the surface tension of the substrates to be printed z. B. by at least 10%, preferably by more than 40% in each case to a value of at least 45 mN / m, in particular of at least 50 mN / m, preferably to a value of about 70 mN / m is increased, in which only after this Increasing the surface tension of the ink droplets are applied to the respective substrate having the increased surface tension and in which the applied ink drops each by a heat input and / or a
- Heat exposure, z. Example by hot air, in particular at a temperature of at least 100 ° C, preferably of at least 150 ° C, in particular with a temperature in a range of 200 ° C to 450 ° C and / or by an infrared radiation each with an exposure time of at most 1 second , preferably heated for less than 0.2 seconds and thereby dried.
- z. B. when setting up a new print job adjustment or adjustment of the heat input and / or heat exposure, z. B. the temperature of the hot air and / or the volume of this hot air z. B. to the substrate used and / or to the ink used, the Quality of the printed image, in particular the image effect can be easily optimized.
- the surface tension of the substrates in question may be increased by their pretreatment by a corona process or by a plasma process or by a chemical process or by flame treatment or by UV irradiation or by other surface activation techniques.
- a corona process or by a plasma process or by a chemical process or by flame treatment or by UV irradiation or by other surface activation techniques.
- Ink drops have a very fast changing color property in the print image result and / or also leads to an unwanted flow of ink z.
- Micro-wells of the substrate in question Another effect is when using ink drops with different shades bleeding of these drops of ink, the z. B. by a merging of different color points and thus in the print image leads to completely undesirable color effects, not only in the color, but also in the acutance of printed textured surfaces such. B. in a font or on an image edge. Therefore, it is proposed according to the invention to stop, or even largely prevent, directly, ie within only a single second, preferably within 0.5 seconds after the printing of the substrates by a shock-like (over) drying of the ink droplets.
- this particular very short-term heat input and / or the corresponding heat exposure is characterized in that on the substrate in question z.
- Temperature is inflated in the range of 200 ° C to 450 ° C. This shock-like drying stops spreading, but does not damage the ink or the substrate due to the short duration of the exposure.
- an infrared radiation in particular near-infrared radiation, generated by a dryer. Due to the respective massive heat, the water contained as solvent in the ink is applied to the substrate in question
- the at least one binder gels through the massive heat applied with hot air and / or radiation, thereby also preventing or stopping spreading of the ink drops on the subject substrate.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017207007.2A DE102017207007A1 (en) | 2017-04-26 | 2017-04-26 | Method of printing non-absorbent substrates with a water-based ink |
PCT/EP2018/060309 WO2018197399A1 (en) | 2017-04-26 | 2018-04-23 | Method for printing non-absorbent substrates with a water-based ink |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3615346A1 true EP3615346A1 (en) | 2020-03-04 |
EP3615346B1 EP3615346B1 (en) | 2022-11-23 |
EP3615346B8 EP3615346B8 (en) | 2022-12-28 |
Family
ID=62104246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18721718.7A Active EP3615346B8 (en) | 2017-04-26 | 2018-04-23 | Method for printing non-absorbent substrates with a water-based ink |
Country Status (6)
Country | Link |
---|---|
US (1) | US20200086660A1 (en) |
EP (1) | EP3615346B8 (en) |
DE (1) | DE102017207007A1 (en) |
ES (1) | ES2938390T3 (en) |
IL (1) | IL269279A (en) |
WO (1) | WO2018197399A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019105629B3 (en) | 2019-03-06 | 2020-04-16 | Koenig & Bauer Ag | Printing machine with an inkjet system and with a transport device |
EP4289622A1 (en) * | 2021-04-16 | 2023-12-13 | Mimaki Engineering Co., Ltd. | Printing method, printing device, and printed matter |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19744018A1 (en) * | 1997-10-06 | 1999-04-15 | Rainer Dipl Ing Kaufmann | Production of water- and smear-proof marks on plastics surface, including glossy film |
JP4045759B2 (en) * | 2001-08-20 | 2008-02-13 | 富士ゼロックス株式会社 | Image forming method |
US7736693B2 (en) * | 2002-06-13 | 2010-06-15 | Cima Nanotech Israel Ltd. | Nano-powder-based coating and ink compositions |
US7566360B2 (en) * | 2002-06-13 | 2009-07-28 | Cima Nanotech Israel Ltd. | Nano-powder-based coating and ink compositions |
US7655296B2 (en) * | 2003-04-10 | 2010-02-02 | 3M Innovative Properties Company | Ink-receptive foam article |
DE102006004341A1 (en) * | 2005-02-17 | 2006-08-31 | Tritron Gmbh & Co. Kg | Non-absorbent substrate or carrier material pre-treatment and/or pre-coating method for ink jet printing, involves providing pre-treatment solution that induces inhibition of ink flow applied to substrate with relation to color distribution |
JP4277898B2 (en) * | 2006-12-25 | 2009-06-10 | セイコーエプソン株式会社 | Inkjet recording method |
JP2010000710A (en) * | 2008-06-20 | 2010-01-07 | Fuji Xerox Co Ltd | Image recording composition, image recording ink set, and recorder |
JP5595823B2 (en) * | 2010-07-30 | 2014-09-24 | 富士フイルム株式会社 | Image forming method and image forming apparatus |
CH703704A1 (en) * | 2010-09-14 | 2012-03-15 | Hoffmann Neopac Ag | A printing apparatus and method for printing on fabrics. |
US20120081860A1 (en) * | 2010-10-04 | 2012-04-05 | Itzhak Pomerantz | Pre-treatment of memory cards for ink jet printing |
JP2013146925A (en) * | 2012-01-19 | 2013-08-01 | Seiko Epson Corp | Ink jet recording method, ink jet recording apparatus, and recording material |
DE102012017538A1 (en) | 2012-09-05 | 2014-03-06 | Heidelberger Druckmaschinen Ag | Process for imaging and / or varnishing the surface of objects |
US9427975B2 (en) * | 2014-06-12 | 2016-08-30 | Eastman Kodak Company | Aqueous ink durability deposited on substrate |
US9573349B1 (en) * | 2015-07-30 | 2017-02-21 | Eastman Kodak Company | Multilayered structure with water-impermeable substrate |
US9376582B1 (en) * | 2015-07-30 | 2016-06-28 | Eastman Kodak Company | Printing on water-impermeable substrates with water-based inks |
-
2017
- 2017-04-26 DE DE102017207007.2A patent/DE102017207007A1/en active Pending
-
2018
- 2018-04-23 EP EP18721718.7A patent/EP3615346B8/en active Active
- 2018-04-23 WO PCT/EP2018/060309 patent/WO2018197399A1/en unknown
- 2018-04-23 ES ES18721718T patent/ES2938390T3/en active Active
- 2018-04-23 US US16/495,255 patent/US20200086660A1/en not_active Abandoned
-
2019
- 2019-09-11 IL IL26927919A patent/IL269279A/en unknown
Also Published As
Publication number | Publication date |
---|---|
IL269279A (en) | 2019-11-28 |
EP3615346B1 (en) | 2022-11-23 |
EP3615346B8 (en) | 2022-12-28 |
US20200086660A1 (en) | 2020-03-19 |
DE102017207007A1 (en) | 2018-10-31 |
WO2018197399A1 (en) | 2018-11-01 |
ES2938390T3 (en) | 2023-04-10 |
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