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
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/52—Macromolecular coatings
  • B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers

Definitions

• the vinyl monomers are selected so that the glass transition temperature of the obtained copolymer is in the range of 50°C to 100°C, preferably in the range of 60°C to 95°C.
• (meth)acrylonitrile means methacrylonitrile as well as acrylonitrile.
• (meth)acrylic acid ester means methacrylic acid ester as well as acrylic acid ester.
• VDC vinyl idenechloride
• the linear aliphatic polyester for use according to the present invention is a polyester obtained by condensation of one or more linear aliphatic diols with one or more linear aliphatic dicarboxylic acids.
• linear aliphatic hydroxy-carboxylic acids can be used.
• one or two or more kinds of additives such as UV-ray absorbers, light stabilizers and antioxidants, can be added, if necessary.
• the amounts of these UV-ray absorbers and light stabilizers is preferably 0.05 to 10 parts by weight and 0.5 to 3 parts by weight, respectively, per 100 parts of the resin constituting the receiving layer.
• the image receiving sheet can have a lubricating layer provided on the back surface of the sheet support.
• the material for the lubricating layer may include methacrylate resins such as methyl methacrylate, etc. or corresponding acry ate resins, vinyl resins such as vinyl chloride-vinyl acetate copolymer.
• a dye-barrier layer comprising a hydrophilic polymer may also be employed in the dye-donor element between its support and the dye layer to improve the dye transfer densities by preventing wrong-way transfer of dye towards the support.
• the dye barrier layer may contain any hydrophilic material which is useful for the intended purpose. In general, good results have been obtained with gelatin, polyacryl amide, polyisopropyl acrylamide, butyl methacrylate grafted gelatin, ethyl methacrylate grafted gelatin, ethyl acrylate grafted gelatin, cellulose monoacetate.
• detection marks are commonly provided on one surface of the donor element.
• optically detectable marks are used that can be detected by a light source and a photo sensor; detection can be done by measuring the light transmitted through the detection mark or reflected from said mark.
• the marks being in the form of a light-absorbing or light-reflecting coating are formed in a preassigned position on the donor element by e.g. gravure printing.
• the detection marks can comprise an infrared absorbing compound such as carbon black.
• the detection mark can also comprise one of the image dyes that are used for the image formation, with the detection being in the visible range.
• a receiving element was prepared as follows:
• a 10% solution in methylethylketone for forming the receiving layer comprising a vinylcopolymer and a linear aliphatic polyester, the nature and amount (in g/ ⁇ r) of which are indicated below in table 2 was coated (wet layer thickness 50 ⁇ m) on paper provided on both sides with a polyethylene coating and on one side thereof (the receiving layer side) supplementary with a gelatine coating. After coating the layers were dried at 90°C for 15 minutes.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Thermal Transfer Or Thermal Recording In General (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8207919

Family Applications (1)

Country Status (3)

Cited By (1)

Citations (1)

• 1992
  • 1992-09-23 DE DE69209306T patent/DE69209306T2/de not_active Expired - Fee Related
  • 1992-09-23 EP EP92920076A patent/EP0607191B1/de not_active Expired - Lifetime
  • 1992-09-23 WO PCT/EP1992/002208 patent/WO1993007002A1/en not_active Ceased

Patent Citations (1)

Also Published As

Similar Documents

Legal Events