WO2000066363A1 - Procede permettant d'encrer une plaque d'impression a l'aide d'encres thermoplastiques et reservoirs a encre utilises pour la mise en oeuvre dudit procede - Google Patents

Procede permettant d'encrer une plaque d'impression a l'aide d'encres thermoplastiques et reservoirs a encre utilises pour la mise en oeuvre dudit procede Download PDF

Info

Publication number
WO2000066363A1
WO2000066363A1 PCT/BE2000/000044 BE0000044W WO0066363A1 WO 2000066363 A1 WO2000066363 A1 WO 2000066363A1 BE 0000044 W BE0000044 W BE 0000044W WO 0066363 A1 WO0066363 A1 WO 0066363A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink tank
doctor blade
printing plate
ink
tank according
Prior art date
Application number
PCT/BE2000/000044
Other languages
English (en)
Inventor
Laurent De Volder
Original Assignee
Printing Internat
Laurent De Volder
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Printing Internat, Laurent De Volder filed Critical Printing Internat
Priority to EA200101147A priority Critical patent/EA003872B1/ru
Priority to EP00920295A priority patent/EP1173332B1/fr
Priority to AU40951/00A priority patent/AU4095100A/en
Priority to CA002372449A priority patent/CA2372449A1/fr
Priority to AT00920295T priority patent/ATE236015T1/de
Priority to JP2000615225A priority patent/JP2003526538A/ja
Priority to DE60001930T priority patent/DE60001930T2/de
Priority to DK00920295T priority patent/DK1173332T3/da
Publication of WO2000066363A1 publication Critical patent/WO2000066363A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/001—Pad printing apparatus or machines

Definitions

  • thermoplastic inks and ink tanks Process for inking a printing plate with thermoplastic inks and ink tanks to be used therein
  • This invention relates to a process for inking a printing plate attached to a holder, with a thermoplastic ink, to be used in pad printing, wherein a relative movement is maintained between the holder and an ink tank filled with thermoplastic ink.
  • thermoplastic ink For the printing of substrates such as glass, ceramics and china, mostly a so-called thermoplastic ink is used. Such an ink has the viscosity of a thick paste at room temperature. For printing, this ink is heated to about 80 ⁇ C. whereby it becomes very fluid. After printing, the very fluid ink on the printed substrate cools down to room temperature and consequently coagulates again. The print on the substrate is fixed bybafc g the printed product for a certain time at high temperature (around 800°C). By doing so, the ink vitrifies and fuses to the substrate. The result is a strongly adhesive print that does not fade or wear off, even when frequently cleaned in the dishwasher.
  • Silkscreen printing is at present the current process used for printing glass with thermoplastic inks to obtain an acceptable quality.
  • a screen is used that is comprised of a plastic material or metal, but must resist to a temperature of maximum 100 ⁇ C, and that is attached to a wooden or metallic frame.
  • the screen is covered with an impermeable layer, except in the spots where ink must be able to pass the screen to form the image to be printed on the substrate.
  • the pasty thermoplastic inks are placed on the screen.
  • thermoplastic ink becomes fluid.
  • thermoplastic ink is pushed through the screen, only through the openings that show the image directly on the product: glass, ceramics or china
  • Pad printing with thermoplastic ink has known little succession up to now, because of lack of reliability and lack of constant quality.
  • an engraved printing plate is used, which in a first stage is inked over its entire surface, whereupon with a doctor blade the excess ink is scraped off, and collected in an ink duct or the like.
  • the ink thus exclusively remains in the engraved parts.
  • the doctor blade holder with slab is removed from the printing plate and is kept at a distance from the printing plate during the inking stage. 2) The doctor blade holder with slab is moved with respect to the printing plate during the inking stage, in the longitudinal direction thereof.
  • doctor blade is always adjusted in such a way with respect to the printing plate, that it forms a sharp angle with this plate, with the portion of the printing plate that has been inked and must yet be scraped off.
  • thermoplastic inks which must be held at a constant, controlled temperature, many disadvantages are associated to this system. These are summarized hereafter:
  • an electrically heated ink tank is used, with circular or oval doctor blade of a hard material, such as hard metal or plastic material in the shape of a monolithic component of undeformable material, in which, at the periphery a circular or oval canal is made for attaching above said doctor blade by snap connection, as well as for attaching above said doctor blade to this component by glueing.
  • a hard material such as hard metal or plastic material in the shape of a monolithic component of undeformable material
  • a device consisting of a combination of a heated ink tank and at least one doctor blade, of which at least the bottom edge which is contacting the printing plate, is adjusted with respect to the printing plate at a negative angle, measured with respect to the inked portion of the printing plate to be scraped off, and without changing the position of the doctor blade, a relative movement of the doctor blade with respect to the printing plate is generated, on the one hand, in a direction to ink the pnnting plate, and on the other hand, in the other direction, to scrape off the ink from the printing plate.
  • the invention also relates to closed ink tanks to be used within the frame of the invention.
  • Other details and advantages of the invention will show from the process for inking a printing plate attached to a holder, with thermoplastic ink and the ink tank used herein according to the invention.
  • the reference numbers refer to the attached figures
  • FIGS 1 to 4 schematically illustrate a classical pad printing process
  • Figure 5 schematically shows a closed ink tank with heated printing plate holder
  • Figure 6 schematically shows a closed ink tank with heated printing plate.
  • Figure 7 schematically shows a closed ink tank with heated holder.
  • Figure ⁇ schematically shows a closed ink tank with heated ink tank.
  • Figure 9 schematically shows a closed doctor blade chamber with heated printing plate holder.
  • Figure 10 schematically shows a closed doctor blade chamber with heated printing plate.
  • Figure 1 schematically shows a closed and heated doctor blade chamber.
  • FIG. 1 refers to the printing plate which is fixed in a holder 2, the deepened part of which forms the ink chamber 3, in which the ink is collected after the scraping off of the printing plate 1.
  • a device for inking a printing plate always comprises an ink slab 4 and a doctor blade 5. These components are separately moved up and down by means which will not be described in detail here.
  • the techniques generally applied and briefly described show a series of disadvantages which can be summarized as follows: a) The doctor blade is always adjusted in such a way with respect to the printing plate, that it forms a sharp angle with this plate, with the portion of the printing plate that has been inked and must yet be scraped off. b) The printing plate is subjected to high wear, because of the pressure exerted by the doctor blade on the printing plate. A good scraping off of the ink is indeed an absolute requirement, and this requires, at the installation of the doctor blade as described sub a), a high pressure of the doctor blade on the printing plate c) Each time, two movements are required, which can be summarized as follows- up or down movement of the doctor blade knife during the relative movements of the doctor blade with respect to the printing plate.
  • thermoplastic inks should be held at a constant controlled temperature
  • disadvantages are connected to the process just described. These disadvantage are, i.a. • severe wear of printing plate and doctor blade knife because of the required high pressure of the doctor blade knife on the printing plate, which strongly affects the print quality in a negative way. • problems to keep the temperature at a constant level during the up and down movements of the doctor blade knife, which is continuously heated and cooled, as a result of which the doctor blade knife is rapidly "polluted" by hardened ink.
  • the combination of above disadvantages is the reason why a production with a constant print quality is almost impossibly feasible
  • thermoplastic inks a heated printing plate holder 4 or a closed, heated ink tank is used, but it will immediately be obvious that both these components could be heated
  • Figure 6 concerns an alternative of the invention according to which the printing plate 6 is heated, whereas neither the printing plate holder 7, nor the inking chamber 8 are heated.
  • a combination of the embodiments described just now, is conceivable.
  • the embodiments according to figures 5-8 can be both mutually combined.
  • the closed chambers 10 according to figures 9-11 relate to a very remarkable embodiment of the inking chamber to be used with this application
  • the closed inking chambers are combined here according to the embodiment described hereafter; i.e. a) (Fig.
  • the inking chamber 10 is used in combination with a heated printing plate holder 7; b) (Fig. 10) Here, exclusively the printing plate 6 is heated, c) (Fig. 1 1 ) In this embodiment, exclusively the inking chamber 10 is heated. in the spirit of the invention, the embodiments according to figures 9-11 may be mutually combined.
  • the inking chamber 10 is a particularly attractive embodiment. It consists of a housing 1 1 , which in combination with two doctor blades 12, forms a completely closed inking chamber 13.
  • the ink 14 present in the inking chamber ts spread out on and scraped off from the printing plate, simultaneously by both the doctor blades 8.
  • thermoplastic inks Because of the particular angle at which the doctor blades 8 are adjusted with respect to the printing plate &, an "inking gap'Of the closed inktng chamber is realised, which is particularly advantageous for the use of thermoplastic inks.
  • thermoplastic ink Since there are no up- and downward movements of both the closed inking chamber and the doctor blade chamber mechanism, these cannot cool down. b) Due to the limited amount of used thermoplastic ink which will be used according to the process, maintaining a constant temperature is simpler c) Minimum wear of the printing plate, because the pressure of the doctor blade chamber or inkpot on the printing plate is low. d) Printing plates and ink are easily exchangeable, with very short exchange times. e) A very economical ink consumption, because the ink losses upon cleaning are very small. f) Because of the limited amount of used thermoplastic ink, and the absence of an ink tank, the machine more rapidly arrives at operating temperature after switching on, when starting up at room temperature.

Landscapes

  • Printing Methods (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Ink Jet (AREA)
  • Coloring (AREA)

Abstract

Procédé permettant d'encrer une plaque d'impression attachée à un support à l'aide d'encre thermoplastique, ladite plaque étant utilisée pour l'impression au tampon. Un mouvement relatif est maintenu entre le support et le réservoir rempli d'encre thermoplastique. Selon ledit procédé, le support ou le réservoir à encre, ou les deux, sont chauffés à la température requise pour l'encre thermoplastique. La présente invention concerne également des réservoirs à encre utilisés pour la mise en oeuvre dudit procédé.
PCT/BE2000/000044 1999-04-29 2000-04-21 Procede permettant d'encrer une plaque d'impression a l'aide d'encres thermoplastiques et reservoirs a encre utilises pour la mise en oeuvre dudit procede WO2000066363A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EA200101147A EA003872B1 (ru) 1999-04-29 2000-04-21 Способ нанесения термопластических красок на печатную форму и контейнеры для красок, используемые в этом способе
EP00920295A EP1173332B1 (fr) 1999-04-29 2000-04-21 Procede permettant d'encrer une plaque d'impression a l'aide d'encres thermoplastiques et reservoirs a encre utilises pour la mise en oeuvre dudit procede
AU40951/00A AU4095100A (en) 1999-04-29 2000-04-21 Process for inking a printing plate with thermoplastic inks and ink tanks to be used therein
CA002372449A CA2372449A1 (fr) 1999-04-29 2000-04-21 Procede permettant d'encrer une plaque d'impression a l'aide d'encres thermoplastiques et reservoirs a encre utilises pour la mise en oeuvre dudit procede
AT00920295T ATE236015T1 (de) 1999-04-29 2000-04-21 Verfahren zum einfärben einer druckplatte mit thermoplastischen farben und dazu geeigneten farbbehältern
JP2000615225A JP2003526538A (ja) 1999-04-29 2000-04-21 熱可塑性インクで印刷板にインク付けする方法とそれに用いられるインクタンク
DE60001930T DE60001930T2 (de) 1999-04-29 2000-04-21 Verfahren zum einfärben einer druckplatte mit thermoplastischen farben und dazu geeigneten farbbehältern
DK00920295T DK1173332T3 (da) 1999-04-29 2000-04-21 Fremgangsmåde til indfarvning af en trykplade med termoplastiske farver og farvebeholdere til brug herved

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP99870075A EP1048463A1 (fr) 1999-04-29 1999-04-29 Procédé pour l'encrage d'une plaque d'impression avec des encres thermoplastiques et réservoirs d'encre utilisés dans celui-ci
EP99870075.1 1999-04-29

Publications (1)

Publication Number Publication Date
WO2000066363A1 true WO2000066363A1 (fr) 2000-11-09

Family

ID=8243820

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BE2000/000044 WO2000066363A1 (fr) 1999-04-29 2000-04-21 Procede permettant d'encrer une plaque d'impression a l'aide d'encres thermoplastiques et reservoirs a encre utilises pour la mise en oeuvre dudit procede

Country Status (11)

Country Link
EP (2) EP1048463A1 (fr)
JP (1) JP2003526538A (fr)
AT (1) ATE236015T1 (fr)
AU (1) AU4095100A (fr)
CA (1) CA2372449A1 (fr)
DE (1) DE60001930T2 (fr)
DK (1) DK1173332T3 (fr)
EA (1) EA003872B1 (fr)
ES (1) ES2198300T3 (fr)
PT (1) PT1173332E (fr)
WO (1) WO2000066363A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115230306A (zh) * 2021-04-23 2022-10-25 佳因企业有限公司 恒温墨杯式的移印机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080127844A1 (en) * 2006-11-30 2008-06-05 Anatoly Gosis Pad printing system with independent and variable compression device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01136747A (ja) * 1987-11-25 1989-05-30 Seiko Epson Corp パッド印刷機のインキ処理構造
JPH03213341A (ja) * 1990-01-18 1991-09-18 Think Lab Kk グラビア印刷方法
DE4027587C1 (fr) * 1990-08-31 1991-10-02 Tampoprint Gmbh, 7015 Korntal-Muenchingen, De
DE4015684A1 (de) * 1990-05-16 1991-11-21 Tampoflex Gmbh Einfaerb- und rakelvorrichtung
JPH05193115A (ja) * 1992-01-23 1993-08-03 Mitsubishi Heavy Ind Ltd インキ供給装置
EP0736380A1 (fr) * 1995-04-05 1996-10-09 Printing International Réservoir d'encre avec une racle
WO1997037850A1 (fr) * 1996-04-03 1997-10-16 Teca-Print Ag Machine a imprimer a tampon encreur
EP0917953A1 (fr) * 1997-11-21 1999-05-26 Printing International Procédé et dispositif pour l'encrage d'une plaque d'impression avec un réservoir d'encre

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01136747A (ja) * 1987-11-25 1989-05-30 Seiko Epson Corp パッド印刷機のインキ処理構造
JPH03213341A (ja) * 1990-01-18 1991-09-18 Think Lab Kk グラビア印刷方法
DE4015684A1 (de) * 1990-05-16 1991-11-21 Tampoflex Gmbh Einfaerb- und rakelvorrichtung
DE4027587C1 (fr) * 1990-08-31 1991-10-02 Tampoprint Gmbh, 7015 Korntal-Muenchingen, De
JPH05193115A (ja) * 1992-01-23 1993-08-03 Mitsubishi Heavy Ind Ltd インキ供給装置
EP0736380A1 (fr) * 1995-04-05 1996-10-09 Printing International Réservoir d'encre avec une racle
WO1997037850A1 (fr) * 1996-04-03 1997-10-16 Teca-Print Ag Machine a imprimer a tampon encreur
EP0917953A1 (fr) * 1997-11-21 1999-05-26 Printing International Procédé et dispositif pour l'encrage d'une plaque d'impression avec un réservoir d'encre

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 385 (M - 864) 25 August 1989 (1989-08-25) *
PATENT ABSTRACTS OF JAPAN vol. 15, no. 491 (M - 1190) 12 December 1991 (1991-12-12) *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 623 (M - 1511) 17 November 1993 (1993-11-17) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115230306A (zh) * 2021-04-23 2022-10-25 佳因企业有限公司 恒温墨杯式的移印机

Also Published As

Publication number Publication date
EP1173332A1 (fr) 2002-01-23
JP2003526538A (ja) 2003-09-09
ATE236015T1 (de) 2003-04-15
DE60001930T2 (de) 2004-03-04
EA200101147A1 (ru) 2002-06-27
EP1173332B1 (fr) 2003-04-02
AU4095100A (en) 2000-11-17
ES2198300T3 (es) 2004-02-01
PT1173332E (pt) 2003-08-29
EP1048463A1 (fr) 2000-11-02
CA2372449A1 (fr) 2000-11-09
DK1173332T3 (da) 2003-07-28
EA003872B1 (ru) 2003-10-30
DE60001930D1 (de) 2003-05-08

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