WO1990008041A1 - Procede d'impression ameliore - Google Patents

Procede d'impression ameliore Download PDF

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Publication number
WO1990008041A1
WO1990008041A1 PCT/GB1990/000047 GB9000047W WO9008041A1 WO 1990008041 A1 WO1990008041 A1 WO 1990008041A1 GB 9000047 W GB9000047 W GB 9000047W WO 9008041 A1 WO9008041 A1 WO 9008041A1
Authority
WO
WIPO (PCT)
Prior art keywords
dye
sheet
layer
printed
sublimation
Prior art date
Application number
PCT/GB1990/000047
Other languages
English (en)
Inventor
John Michael Payne
Original Assignee
J.M. Payne Innovators Limited
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 J.M. Payne Innovators Limited filed Critical J.M. Payne Innovators Limited
Publication of WO1990008041A1 publication Critical patent/WO1990008041A1/fr

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/26—Electrographic processes using a charge pattern for the production of printing plates for non-xerographic printing processes
    • G03G13/30—Hectographic masters
    • 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
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
    • 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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/38207—Contact thermal transfer or sublimation processes characterised by aspects not provided for in groups B41M5/385 - B41M5/395
    • B41M5/38214—Structural details, e.g. multilayer systems
    • 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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/392—Additives, other than colour forming substances, dyes or pigments, e.g. sensitisers, transfer promoting agents
    • 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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/41—Base layers supports or substrates
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/26—Electrographic processes using a charge pattern for the production of printing plates for non-xerographic printing processes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G8/00—Layers covering the final reproduction, e.g. for protecting, for writing thereon
    • 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
    • B41M7/0027—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers by lamination or by fusion of the coatings or layers

Definitions

  • This invention concerns printing process by which dyes and inks are transferred to sheet material using an intermediate transfer sheet containing the printing material.
  • a sublimation dye (eg assupplied by Ciba- Geigy Ltd), is printed onto paper using for example silk screen, flexographic or lithographic processes. This is printed in reverse as it wili be used as a transfer sheet.
  • This transfer sheet is placed with its printed surface next to the surface to be sublimation printed.
  • the surface is usually a man-made polymer, one of the most suitable being polyester, such as that made by ICI having the brand name 'Melinex' (trade mark).
  • the transfer sheet and the polyester sheet are then put under light pressure and heated to a temperature of about 180°C for about 1 minute. Molecules of the dye migrate into the structure of the polyester.
  • the present invention seeks to provide methods which are an improvement over existing methods by speed, cost, and/ or print quality.
  • a dye doner sheet comprises a dye resisting substrate having a release agent coated thereon over which is coated a layer of sublimation dye having a bonding medium in at least its surface, which will cause the dye to adhere to thermoplastic material placed in contact therewith (eg the fused toner of a photocopy) .
  • photocopy any copy using fused toner and includes a laser printer copy.
  • Figure 1 shows a dye doner sheet consisting of a sublimation dye resisting substrate (1) made for example of paper or aluminium foil. Coated onto it is a release coat (2) , and coated on to that is a layer of sublimation dye (3) which has a bonding medium which hen placed in contact with a photocopy or other thermoplastic print, and subjected to heat, will adhere selectively to the thermoplastic printed areas as shown in Figure 2.
  • the thermoplastic ink is indicated as (4), and (5) shows the paper on which it is printed.
  • (4) and (5) could be a photocopy or a laserprinter copy where thermoplastic toners are used.
  • the resultant photocopy with dye adhering to the print is now a sublimation dye transfer sheet and can be used in the conventional way as described in the introduction.
  • thermoplastic print does not flow through the dye layer and mark the surface being dye printed during the heating process
  • a barrier layer and an adhesive layer may be added as shown in Figure 3.
  • Figure 3 shows a sublimation dye resisting substrate eg paper, aluminium sheet etc (1) dye release layer (2) a dye layer (3) and a barrier layer (4), (ie a layer which will prevent the thermoplastic print from the photocopy flowing through the dye layer onto the surface being dye printed during application of heat).
  • a barrier layer (4) ie a layer which will prevent the thermoplastic print from the photocopy flowing through the dye layer onto the surface being dye printed during application of heat.
  • barrier material could be aluminium which may be vacuum deposited.
  • An adhesive layer (5) is also shown. This is compatible with the thermoplastic print areas only, and adheres to the print when subjected to heat and pressure but not to the paper.
  • Another feature of this invention is in the use of a transparent, heat resisting, sheet of material such as polyester, used to make a photocopy from which to make the sublimation dye transfer sheet as shown in Figure 4 and Figure 5. Any print using a thermoplastic ink onto a transparent sheet may be used in addition to a photocopy.
  • Figure 4 shows -- transparent sheet (1) with photocopy text (2) sublimation dye (3), release layer (4) and substrate (5) .
  • a xenon flash tube is used to heat the photocopy text by radiation so that the dye/bonding material adheres selectively to the photocopy text.
  • Figure 5 shows dye adhering selectively to the photocopy text.
  • the resultant photocopy/dye transfer sheet is then used in a conventional way to sublime the dye into a suitable surface (polyester) or can be used to sublime the dye in the way shown in Figure 6.
  • the resultant photocopy/dye transfer sheet is used as follows.
  • a xenon flash tube (5) is shown, which is activated over the transparent sheet photocopy dye transfer sheet (1) (2) (3).
  • the radiated heat from the xenon passes through the transparent sheet (1) and is absorbed by the black toner print (3) which in turn heats the dye (3) by conduction causing the dye to sublime into the surface being printed (4).
  • This method has a great advantage over conventional heating method (conduction) which takes approximately one minute.
  • the xenon flash method takes approximately 1 millisecond, so making the process much faster and suitable for a high production method.
  • the dye transfer sheet and the surface being printed may be a material of relatively low heat resistance as the heat applied is very localised and of small duration.
  • the invention also has a method in which a substrate sheet such as paper, is evenly coated with a layer of sublimation dye, which sheet is subsequently overprinted with text or design, the print ink being a material which will inhibit the dye from subliming to the surface being dye printed.
  • Figure 7 shows a substrate sheet (1) coated with a layer of sublimation dye (2) subsequently overprinted (3) with a material which inhibits the dye from sublimating into the surface bring printed (4) .
  • thermoplastic toner (3) Alternatively a similar same effect can be achieved as shown in Figure 8, in which substrate (1) coated with dye (2) is overprinted by photocopying where the print material is thermoplastic toner (3). Other printing methods using thermoplastic materials may be used.
  • Figure 9 shows the photocopied dye sheet (1) (2) (3) placed in contact under pressure and heat with a doner sheet.
  • (4) is a paper or polyester- substrate
  • (5) is a release layer preferably transparent
  • (6) is a sublimation dye inhibiting layer, for example vacuum deposited aluminium.
  • An adhesive compatible to the toner print when heated also may be coated over the inhibition layer (6) to improve subsequent adhesion.
  • Figure 10 shows the inhibiting layer (6) selectively adhering to the photocopy print areas (3).
  • the photocopied dye sheet (1) (2) (3) (6) then becomes a sublimation dye transfer sheet and can be used as shown in Figure 11.
  • Figure 11 shows the dye transfer sheet being heated whilst in contact with the sheet being dye printed (7).
  • the dye (2) is inhibited from subliming in the selected aareas of toner (3) coated with inhibiting material (6) thus printing the desired design onto (7).
  • the transfer sheet is printed with sublimation dye with the design back to front, so that when the transfer sheet is placed witi ⁇ the printed design next to the surface being sublimation printed, the transferred design is the right way round, see Figure 12 .
  • Figure 12 shows the sublimation dye transfer consisting of substrate sheet (1) which is typically paper, and the sublimation dye design (2) printed back to front.
  • substrate sheet (1) which is typically paper
  • sublimation dye design (2) printed back to front.
  • the surface being printed, typically polyester, is shown as (3).
  • the sublimation dye transfer is made by printing the dye design the right way round onto a sheet of material which will readily allow the dye to pass through it when subjected to heat, into the surface to the sublimation dye printed.
  • a sheet of material which will readily allow the dye to pass through it when subjected to heat, into the surface to the sublimation dye printed.
  • Such a material may be polyester as manufactured by ICI typically of a thickness approximately 20 microns. Thus the image would be printed the right way round, see Figures 13 and 14.
  • Figure 13 shows the polyester sheet (2) printed the right way round with sublimation dye (1) placed onto the sheet to be sublimation dye printed (3).
  • Figure 14 shows the transfer sheet (1) (2) placed with its imprinted surface next to the surface to be sublimation printed (3) thus producing a right way round print.
  • a second method consists of a substrate sheet which will allow sublimation dye to pass through it readily, for example polyester sheet of for example 20 microns thickness.
  • This sheet is coated with a uniform layer of sublimation dye on one side.
  • the opposite side of the sheet is coated with a layer of material which inhibits sublimation dye from passing through it, for example aluminium foil, or vacuum deposited aluminium.
  • This coating also would have the property of being selectively removable in required areas ie text or other designs, see Figures 15 and 16. -•
  • Figure 15 shows a substrate sheet (1) made for example of 20 micron thick polyester, coated with a layer of sublimation dye (2) and a layer of sublimation dye inhibiting material (3) which can be selectively removed.
  • a backing sheet is provided, resistant to sublimation dye (4) made for example of paper of aluminium.
  • Figure 16 shows the dye inhibiting layer (3) selectively removed.
  • Figure 17 shows dye (2) passing uniformly through sheet (1) being inhibited selectively by layer (3) and subliming into the surface being printed (5) to give desired design, when subjected to heat as shown.
  • the sublimation dye inhibiting layer (3) could for example be of vacuum deposited aluminium, or an aluminium foil laminated to the polyester sheet (1) .
  • the dye inhibiting layer (3) could be selectively removed in a number of ways including, chemical etching, laser evaporation, electrolytic etching, etc or by selective adherence to another surface ie removed by sticking to text or other design which is adhesive to the dye inhibiting layer.
  • Figure 18 shows a dye laminate sheet consisting of a substrate sheet (1) of for example paper or aluminium.
  • a layer of sublimation dye (2) .
  • a polyester sheet (3) say 20 microns thick.
  • a sublimation dye inhibiting layer (5) eg vacuum deposited aluminium and an adhesive layer (6) which will stick to a thermoplastic material softened by heat, eg photocopy toner text, but will not stick to the photocopy paper.
  • Figure 19 shows the dye laminate sheet 1 to 6, placed with its adhesive layer (6) next to the printed side of a photocopy, where (7) is a thermoplastic toner text or design, and (8) is the photocopy paper.
  • the resultant dye laminate sheet shown in Figure 20 is then used as a dye transfer sheet in the conventional way to produce a print as shown in Figure 21.
  • Figure 21 shows the resultant dye laminate sheet 1 to 6 placed next to the surface to be sublimation printed (7) and subjected to heat.
  • the dye (2) passes uniformly through the polyester sheet (3) and the release layer (4), but will not pass the dye inhibiting layer (5) . Where the inhibiting layer has been selectively removed the dye will pass through the gaps to the surface (7) thus printing the desired design.
  • Figure * ' 22 shows a sublimation dye resisting substrate (1) made for example from paper.
  • the inhibiting layer (3) would be selectively removed, for example by chemical etching, electrolytic action, spark erosion etc the areas removed would be in the shape of text or other desired designs.
  • the resultant laminate may be used in a conventional way as shown in Figure 23.
  • Dye (2) will pass through the gaps in the inhibiting layer (3) to sublimate into the surface being printed (4) when subjected to heat.
  • the substrate (1) in Figure 22 could be made of a transparent material which ideally is resistant to sublimation dye). After the inhibiting layer (3) is selectively removed the resultant laminate could be used to print as shown in Figure 24.
  • Figure 24 shows the laminate with the dye inhibiting layer (3) selectively removed.
  • a xenon lamp (5) is activated, the heat from which passes through the transparent substrate (l)-to heat the dye layer (2) causing it to pass through the gaps in the inhibiting layer (3) to sublimate into the surface being printed (4) .
  • This heat absorbing layer would absorb the heat from the Xenon tube and transmit it to the dye layer by conduction, this would be particularly useful where light coloured dyes such as yellow were used which would otherwise reflect the heat from the xenon.
  • a heat absorbing material such as carbon black may be mixed with the layer of dye/bonding material.
  • FIG. 25 shows a substrate sheet (1) made of a material that will accept the sublimation dye (3) printed with a material which will inhibit the dye ie the dye is repelled f om it.
  • suitable materials would be to use a substrate (1) made of paper, and to print the desired text or design onto it with a wax based ink which will repel water. This printed sheet is then coated with a water based sublimation dye, the areas printed with the wax material remaining free of dye. Other combinations of accepting and repelling materials may be used. The resultant coated sheet is then used as a transfer sheet in a conventional way to make a sublimation dye print, see Figure 26.
  • Figure 26 shows surface (4) being sublimation dye printed.
  • Figure 27 shows a paper substrate (1), with wax printed areas (2) coated with dye (3) .
  • the sheet (4) is being sublimation dye printed.
  • This wic ing of the wax into the paper substrate has the advantage that the dyed areas are brought into closer contact with the surface being printed (4) giving a better- resolution of the designs being printed. It also reduces the risk of the wax being deposited onto the surface being printed.
  • This method of making a dye transfer sheet is very advantageous when large areas of dye are required.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Abstract

Feuille donneur de colorant comprenant un substrat résistant au colorant (1) qui est une feuille de papier ou d'aluminium recouverte d'une couche de libération (2), qui est à son tour recouverte d'une couche (3) de colorant de sublimation, et une photocopie d'autres feuilles de substrat (5) portant une impression thermoplastique (4). On peut ainsi produire une feuille de transfert du colorant en transférant le colorant du donneur de colorant à l'impression thermoplastique, au moyen d'un flash électronique au xénon, si on utilise une feuille de substrat transparent (5) qui permet de chauffer le colorant par radiations à travers ladite feuille de substrat.
PCT/GB1990/000047 1989-01-13 1990-01-12 Procede d'impression ameliore WO1990008041A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898900747A GB8900747D0 (en) 1989-01-13 1989-01-13 Improved printing process
GB8900747.0 1989-01-13

Publications (1)

Publication Number Publication Date
WO1990008041A1 true WO1990008041A1 (fr) 1990-07-26

Family

ID=10649986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/000047 WO1990008041A1 (fr) 1989-01-13 1990-01-12 Procede d'impression ameliore

Country Status (5)

Country Link
EP (1) EP0452410A1 (fr)
JP (1) JPH04504387A (fr)
AU (1) AU4955290A (fr)
GB (2) GB8900747D0 (fr)
WO (1) WO1990008041A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2250953A (en) * 1990-12-01 1992-06-24 Payne J M Innovators Exposing dye regions of a dye transfer sheet
WO1994006635A1 (fr) * 1992-09-11 1994-03-31 Imperial Chemical Industries Plc Procede et appareil d'impression
EP1040936A2 (fr) * 1999-04-02 2000-10-04 Yugen Kaisha Kowa Technoa Procédé pour imprimer une image électronique sur une pièce de tissu
EP1101628A1 (fr) * 1999-10-03 2001-05-23 Luciano Malagoli Méthode d'impression

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1066966A (en) * 1962-10-06 1967-04-26 Agfa Aktiengesellschft Printing formes
FR1507826A (fr) * 1966-01-17 1967-12-29 Procédé et feuille de transfert de couche pour l'obtention et la régénération de clichés d'impression à image retournée
US3648608A (en) * 1967-01-27 1972-03-14 Olivetti & Co Spa Method and means for making a duplicating master
GB1496891A (en) * 1974-02-15 1978-01-05 Fabprint Ltd Decorating textile fabrics
GB2010339A (en) * 1977-12-16 1979-06-27 Litton Business Systems Inc Heat transfer dye printing and structures useful therein
GB2143180A (en) * 1983-07-11 1985-02-06 Roger Vernon Carter Transfers
US4619665A (en) * 1985-03-11 1986-10-28 Technographics Printworld, Inc. Sheet containing heat transferable dye and selective blocking agent for heat transfer printing

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1066966A (en) * 1962-10-06 1967-04-26 Agfa Aktiengesellschft Printing formes
FR1507826A (fr) * 1966-01-17 1967-12-29 Procédé et feuille de transfert de couche pour l'obtention et la régénération de clichés d'impression à image retournée
US3648608A (en) * 1967-01-27 1972-03-14 Olivetti & Co Spa Method and means for making a duplicating master
GB1496891A (en) * 1974-02-15 1978-01-05 Fabprint Ltd Decorating textile fabrics
GB2010339A (en) * 1977-12-16 1979-06-27 Litton Business Systems Inc Heat transfer dye printing and structures useful therein
GB2143180A (en) * 1983-07-11 1985-02-06 Roger Vernon Carter Transfers
US4619665A (en) * 1985-03-11 1986-10-28 Technographics Printworld, Inc. Sheet containing heat transferable dye and selective blocking agent for heat transfer printing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RESEARCH DISCLOSURE. vol. 17, no. 142, February 1976, HAVANT GB pages 14 - 15; L. Shuttleworth et al.: "Flash dye transfer" see the whole document *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2250953A (en) * 1990-12-01 1992-06-24 Payne J M Innovators Exposing dye regions of a dye transfer sheet
WO1994006635A1 (fr) * 1992-09-11 1994-03-31 Imperial Chemical Industries Plc Procede et appareil d'impression
EP1040936A2 (fr) * 1999-04-02 2000-10-04 Yugen Kaisha Kowa Technoa Procédé pour imprimer une image électronique sur une pièce de tissu
EP1040936A3 (fr) * 1999-04-02 2001-05-09 Yugen Kaisha Kowa Technoa Procédé pour imprimer une image électronique sur une pièce de tissu
EP1101628A1 (fr) * 1999-10-03 2001-05-23 Luciano Malagoli Méthode d'impression

Also Published As

Publication number Publication date
GB9115400D0 (en) 1991-12-04
GB2254158B (en) 1993-12-01
JPH04504387A (ja) 1992-08-06
EP0452410A1 (fr) 1991-10-23
GB2254158A (en) 1992-09-30
AU4955290A (en) 1990-08-13
GB8900747D0 (en) 1989-03-08

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