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
  • B41M5/40—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
  • B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/913—Material designed to be responsive to temperature, light, moisture
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/914—Transfer or decalcomania
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
  • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/249921—Web or sheet containing structurally defined element or component
  • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
  • Y10T428/249987—With nonvoid component of specified composition
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
  • Y10T428/254—Polymeric or resinous material
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/27—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
  • Y10T428/273—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.] of coating
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/27—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
  • Y10T428/273—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.] of coating
  • Y10T428/277—Cellulosic substrate
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
  • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31855—Of addition polymer from unsaturated monomers
  • Y10T428/3188—Next to cellulosic
  • Y10T428/31895—Paper or wood
  • Y10T428/31899—Addition polymer of hydrocarbon[s] only
  • Y10T428/31902—Monoethylenically unsaturated

Definitions

• the present invention relates to a support material for an image-receiving material for thermal dye diffusion transfer (Dye Diffusion Thermal Transfer, D2T2), which contains a support and an intermediate layer.
• D2T2 Thermal dye diffusion transfer
• a receiving material for thermal dye transfer generally consists of a carrier with a receiving layer applied to its front.
• other layers are often applied to the front of the carrier. These include, for example, intermediate layers such as barrier, separating, adhesive layers and the like. or protective layers.
• a plastic film e.g. B. polyester film or coated paper.
• the main component of the receiving layer is usually a thermoplastic resin that has an affinity for the dye from the ribbon.
• a thermoplastic resin that has an affinity for the dye from the ribbon.
• plastics with ester compounds polyester resins, polyacrylic acid ester resins, polycarbonate resins, polyvinyl acetate resins and styrene acrylate resins
• plastics with amide bonds plastics with amide bonds
• copolymers can also be used which have at least one of the structures mentioned above as the main constituent, e.g. Vinyl chloride / vinyl acetate copolymer.
• a soft, supple receiving material can e.g. be produced by the application of an intermediate layer which fulfills the function of a cushion layer.
• J 03-110 195 It is also known (J 03-110 195) to incorporate a spherical filler, such as polypropylene, into a cushion layer.
• a spherical filler such as polypropylene
• DE 39 34 014 proposes a receiving material in which a porous heat-insulating layer, which contains macromolecular microspheres in the form of hollow resin particles and / or heterogeneous resin particles, is applied to a substrate.
• This receiving material is the porosity of the intermediate layer. This allows dye from the receiving layer to penetrate into the interior of the documents and the transferred image appears blurred.
• U.S. 5,106,818 describes a thermal dye diffusion transfer recording sheet which has a support, a resin layer on at least one side of the substrate, and a receiver layer for the dye on the resin layer containing polyolefins.
• a layer containing hollow microspheres can also be formed between the carrier and the resin layer.
• the object of the invention is to provide a substrate for an image-receiving material for thermal sublimation processes which, regardless of the type and composition of the image-receiving layer, enables the printing of images with high color density and resolution with uniform color distribution in the area and without unprinted areas .
• a layer containing microspheres applied to a carrier contains a film-forming binder with a minimum film-forming temperature of at least 25 ° C. and a pigment in the form of hollow polymeric microspheres in one Contains an amount of 4 to 50% by weight, based on the layer, the microspheres having an interior whose volume is between 10 and 55% of the entire spherical body.
• the hollow microspheres have a diameter of 0.4 to 1 ⁇ m, preferably 0.4 to 0.6 ⁇ m.
• the layer according to the invention is applied to a polyolefin-coated base paper, in particular polyethylene-coated or polypropylene-coated base paper.
• the material of the hollow microspheres is selected from styrene, acrylic and / or styrene / acrylic copolymer resins.
• the layer according to the invention By using the layer according to the invention, a good barrier effect between the receiving layer and the polyolefin-coated paper carrier is achieved. As a result, dyes cannot diffuse into the paper base when exposed to heat and are dragged along by substances from the polyolefin coating and the paper, which is manifested by a fuzzy image.
• the film-forming binder used in the layer according to the invention with a minimal film-forming temperature at least 25 ° C is a solvent soluble in organic solvents from the group of acrylonitrile, acrylic acid ester, vinyl chloride, vinyl acetate, vinylidene chloride, polyamide, urethane homopolymers or copolymers and mixtures of these resins.
• a mixture has proven to be particularly advantageous which, in addition to the listed binders, always contains polyvinylidene chloride, such as.
• B. a mixture of acrylate copolymer and polyvinylidene chloride, the minimum film formation temperature is about 26 ° C.
• the layer can also contain other additives such as dispersing agents, release agents, dyes and the like. Tools included.
• the layer is an aqueous dispersion using all common application and dosing methods such.
• the application amount of the dried layer is 0.5-50 g / m 2 , but especially 2-10 g / m 2 .
• a layer is applied to the back of the receiving material which prevents the images from being pressed onto the back of the material.
• This backing layer can contain binders such as starch, gelatin and other auxiliaries, such as. B. contain pigments.
• a base paper coated with polyethylene on both sides was used for the coating.
• TiO 2 masterbatch: MFI 8.5 15.0% by weight
• a receiving layer of the following composition was applied to the material provided with the layer described: Vinyl chloride / vinyl acetate 50% in water 50% by weight Vinyl chloride / acrylic acid methyl ester 50% in water 50% by weight
• the application quantity of the receiving layer was 6 g / m 2 .
• the receiving material thus obtained was printed using the thermal image transfer method and then analyzed.
• the results are summarized in Table 1.
• the support material produced in this way was coated with an image-receiving layer as in Example 1, then printed and analyzed.
• the results are summarized in Table 1.
• the amount applied was 8 g / m 2 , based on the dry weight of the layer.
• the carrier material was further provided with a receiving layer as in Example 1 and then printed and analyzed (Tab. 1).
• the carrier materials produced according to Examples 1 to 3 were also coated with other receiving layers.
• the test results corresponded to the results obtained with the aid of the receiving layer described in Example 1.
• the image receiving material according to the invention was subjected to a thermal image transfer process.
• a color video printer VY-25 E from Hitachi was used using a Hitachi ink ribbon.
• the video printer has the following data: Image storage PAL 1 full screen memory Printed image 64 color image elements: 540: 620 points Printing time 2 minutes / picture
• the color density and line sharpness of the printed image-receiving material were measured. In addition, the appearance (mottle and topping effect) of the printed material was assessed visually.
• the density measurements were carried out using the original reflection densitometer SOS-45. The measurements were carried out for the basic colors cyan, magenta and yellow. The table shows mean values for densities for all three colors.
• the line sharpness was determined on the basis of test images printed in the basic colors.
• the test image shows straight lines that are printed both horizontally and vertically.
• the measurement is carried out with a thread counter at three measuring points.
• the arithmetic mean is calculated from this. The smaller the measured value of the stroke width, the higher the sharpness of the image.
• “Mottle” here refers to an effect that manifests itself in a cloudy appearance in the printed material. It is assessed in an internal test on the basis of comparison images using a scale from 1 to 5, with a 1 for a very uniform and a 5 for a very cloudy appearance of the printed material.
• “topping” effect is also assessed visually on the basis of comparison images.
• “Topping” denotes unprinted, white areas in the image that are caused by insufficient contact of the thermal head with the opposite transport roller in the printer.
• the grade 1 stands for a uniformly printed material, while the grade 5 stands for a material with many unprinted areas.
• Table 1 The results summarized in Table 1 show that with the aid of the carrier material according to the invention an image-receiving material can be produced which has good printability (see “Mottle” and “Topping") and allows the printing of images with high color density and resolution.

Landscapes

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

Applications Claiming Priority (2)

Publications (3)

Family

ID=6469388

Family Applications (1)

Country Status (4)

Families Citing this family (20)

Family Cites Families (6)

• 1992
  • 1992-10-01 DE DE4233018A patent/DE4233018C2/de not_active Expired - Fee Related
• 1993
  • 1993-08-28 DE DE59307489T patent/DE59307489D1/de not_active Expired - Lifetime
  • 1993-08-28 EP EP19930113782 patent/EP0590322B1/de not_active Expired - Lifetime
  • 1993-09-28 US US08/128,485 patent/US5393726A/en not_active Expired - Lifetime
  • 1993-09-30 JP JP24503893A patent/JP3447338B2/ja not_active Expired - Lifetime

Also Published As

Similar Documents

Legal Events