GB2250953A - Exposing dye regions of a dye transfer sheet - Google Patents

Exposing dye regions of a dye transfer sheet Download PDF

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Publication number
GB2250953A
GB2250953A GB9026200A GB9026200A GB2250953A GB 2250953 A GB2250953 A GB 2250953A GB 9026200 A GB9026200 A GB 9026200A GB 9026200 A GB9026200 A GB 9026200A GB 2250953 A GB2250953 A GB 2250953A
Authority
GB
United Kingdom
Prior art keywords
dye
photocopy
sheet
layer
barrier layer
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.)
Withdrawn
Application number
GB9026200A
Other versions
GB9026200D0 (en
Inventor
John Michael Payne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PAYNE J M INNOVATORS
Original Assignee
PAYNE J M INNOVATORS
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 PAYNE J M INNOVATORS filed Critical PAYNE J M INNOVATORS
Priority to GB9026200A priority Critical patent/GB2250953A/en
Publication of GB9026200D0 publication Critical patent/GB9026200D0/en
Publication of GB2250953A publication Critical patent/GB2250953A/en
Withdrawn legal-status Critical Current

Links

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
    • B41M5/26—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
    • 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
    • B41M5/40—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
    • B41M5/42—Intermediate, backcoat, or covering layers

Landscapes

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

Abstract

The sheet containing a layer of sublimation dye and a removable barrier layer covering the dye layer is placed in contact with a photocopy bearing fused thermoplastic material forming the photocopy image. The barrier layer material is attracted to the thermoplastic material to adhere thereto but not to the photocopy paper substrate. Removing the sheet from the photocopy leaves selected regions of the dye layer exposed due to removal of corresponding regions of the barrier layer by their adherence to the photocopy.

Description

Title: Improved Printing Method This invention concerns a printing process by which dyes and inks are transferred to sheet material.
Background to the invention In my PCT application GB90/00047 now published as WO90/08041, a method of making a dye transfer sheet is described in which a dye donor sheet is placed in contact with a photocopy and subjected to a process step such as heat whereby dye is caused to adhere to the thermoplastic material of the photocopy image.
It is an object of the present invention to provide an alternative process for making a dye transfer sheet.
Summary of the invention According to the present invention a dye transfer sheet is formed from sheet material containing at least a layer of dye on one surface thereof and a removabe barrier layer covering the dye layer, by the steps of; placing the sheet material in contact with a photocopy bearing fused thermoplastic material forming the photocopy image, the barrier layer material being attracted to the thermoplastic material to adhere thereto, but not to the photocopy paper substrate; and removing the sheet material from the photocopy, the sheet material now comprising a dye transfer sheet since selected regions of the dye layer are now exposed with the removal of the barrier layer, and dye from the exposed regions can be sublimation printed onto other sheet material by placing the dye transfer sheet with the incomplete barrier layer into contact with the surface of the other sheet material which is to be printed.
It is an advantage of the present invention that a correctly handed photocopy will produce a correctly handed dye transfer sheet thereby obviating the need to produce an oppositely handed photocopy in order to produce a correctly handed dye transfer sheet as is required in the earlier process described in ivy aforementioned PCT application, in which the thermoplastics material of the photocopy image is used as the dye carrier.
The invention will now be described, by way of example, with reference to the accompanying drawings in which: Figure 1 illustrates a photocopy and sheet material containing dye layer and barrier layer.
Figure 2 illustrates the two items of Figure 1 in contact and being processed to effect transfer of selected regions of the protecting layer to the thermoplastics image material of the photocopy; Figure 3 shows the step of separating the photocopy from the dye bearing sheet material; Figure 4 shows the latter now face down in contact with another sheet of material to be printed, and being processed to cause sublimination of exposed dye into the surface of the sheet material in contact therewith; and Figure 5 shows the final step of separating the two sheets to leave the sublimination dye printed sheet material.
In the drawings, a sheet 9 is shown as comprising a substrate 10 carrying a layer of dye 12 covered by a protecting barrier layer 14. If required an intermediate layer 16 is provided between the dye 12 and barrier layer 14 to assist in the release of the barrier layer during transfer of barrier layer to photocopy. A correctly handed photocopy bearing a fused thermoplastic image 18 on a paper substrate 20 is positioned above the sheet 9.
As shown in Figure 2, the two are brought into contact and processed as by heat and/or pressure so as to cause regions of the barrier layer 14 to adhere to the thermoplastic material 18 of the photocopy image, leaving gaps in the barrier layer at 22, when the photocopying sheet 20 is peeled away from the sheet 9, as shown in Figure 3. The removed barrier layer material is left adhering to the photocopy image material.
The sheet 9 can now be placed face down onto a sheet of polyester or the like 24 as shown in Figure 4, and after processing as with heat and/or pressure, some of the dye left exposed by the removal of the barrier layer sublimes and is transferred into the sheet 24.

Claims (6)

Claims
1. A process for making a dye transfer sheet from a sheet material containing at least a layer of sublimation dye on one surface thereof and a removable barrier layer covering the dye layer, the process comprising the steps of placing the sheet material in contact with a photocopy bearing fused thermoplastic material forming the photocopy image, the barrier layer material being attracted to the thermoplastic material to adhere thereto, but not to the photocopy paper substrate; and removing the sheet material from the photocopy so that selected regions of the dye layer of the sheet material are exposed due to the removal of corresponding regions of the barrier layer by their adherence to the thermoplastic material of the photocopy.
2. A process according to claim 1, wherein the sheet material comprises an intermediate layer between the dye layer and the barrier layer, to assist in the release of the barrier layer during its transfer to the photocopy.
3. A process according to claim 1 or claim 2, wherein heat and/or pressure are applied to the sheet material and the photocopy when they are placed into contact with one another.
4. A dye transfer sheet made by the process of any one of claims 1 - 3.
5. A process for printing on a substrate, using a dye transfer sheet according to claim 4, the process comprising the steps of placing the dye transfer sheet into contact with the substrate which is to be printed; and processing the dye transfer sheet so as to allow dye from the exposed regions of the dye layer of the transfer sheet to sublime and thus transfer to the substrate.
6. A printed substrate made by the process of claim 5.
GB9026200A 1990-12-01 1990-12-01 Exposing dye regions of a dye transfer sheet Withdrawn GB2250953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9026200A GB2250953A (en) 1990-12-01 1990-12-01 Exposing dye regions of a dye transfer sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9026200A GB2250953A (en) 1990-12-01 1990-12-01 Exposing dye regions of a dye transfer sheet

Publications (2)

Publication Number Publication Date
GB9026200D0 GB9026200D0 (en) 1991-01-16
GB2250953A true GB2250953A (en) 1992-06-24

Family

ID=10686361

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9026200A Withdrawn GB2250953A (en) 1990-12-01 1990-12-01 Exposing dye regions of a dye transfer sheet

Country Status (1)

Country Link
GB (1) GB2250953A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1040936A2 (en) * 1999-04-02 2000-10-04 Yugen Kaisha Kowa Technoa Method of printing electronic images on a piece of colored cloth

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008041A1 (en) * 1989-01-13 1990-07-26 J.M. Payne Innovators Limited Improved printing process

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008041A1 (en) * 1989-01-13 1990-07-26 J.M. Payne Innovators Limited Improved printing process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1040936A2 (en) * 1999-04-02 2000-10-04 Yugen Kaisha Kowa Technoa Method of printing electronic images on a piece of colored cloth
EP1040936A3 (en) * 1999-04-02 2001-05-09 Yugen Kaisha Kowa Technoa Method of printing electronic images on a piece of colored cloth

Also Published As

Publication number Publication date
GB9026200D0 (en) 1991-01-16

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)