Classifications

• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
  • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
  • D21H11/04—Kraft or sulfate pulp
• • 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
  • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
  • B41M5/508—Supports
• • 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
  • B41M5/5245—Macromolecular coatings characterised by the use of polymers containing cationic or anionic groups, e.g. mordants
• • 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
• • 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
  • B41M5/529—Macromolecular coatings characterised by the use of fluorine- or silicon-containing organic compounds
• • 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
• • 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
  • B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays

Definitions

• the invention relates to a recording material for the ink jet printing process (ink jet process).
• the ink jet process is one of the electronic printing processes. It is possible to assemble pictures, texts and graphics on the computer and print them out directly as a screen hardcopy.
• droplets of a recording liquid are applied to the surface of the carrier material using various techniques.
• a permanent stream of droplets is driven out of the nozzle under high pressure.
• the drops that are not required for image formation are fed back into the ink reservoir by various principles.
• the receiving material consists of a carrier material, an ink receiving layer and optionally further auxiliary layers. Both the carrier material and the ink-receiving layer layer must be coordinated with one another to solve these problems.
• Ink-jet printers for the production of photo-like prints use inks with a high proportion of water as a solvent.
• the ink consumption of these printers is greater than that of conventional ink jet printers.
• foils were used as receiving materials because they are characterized by high dimensional stability when wetted with water.
• the high water content that penetrates through the ink absorption layer into the paper base causes a ripple in the transverse direction (print cockle). This ripple leads to contact with the print head and results in a deterioration of the print image.
• the head contact can damage the receiving material.
• GB 2 210 812 A1 describes a receiving material consisting of a paper base and an ink receiving layer.
• the paper contains calcium carbonate as a pigment; high demands are made of paper sizing.
• a Fourdrinier paper machine is proposed for producing the base.
• the ink absorption layer consists of calcium carbonate and a binder made of cationic vinyl acetate copolymer and a polyvinyl alcohol with silanol groups.
• the receiving material is characterized by good water resistance and sharpness.
• JP 06-262845 A describes a receiving material consisting of a paper support and an ink receiving layer.
• the paper backing contains hardwood pulp and a glue of starch and alkyl ketene dimer.
• the disadvantage here is the occurrence of a waviness of the carrier material due to the sole use of short fiber pulp.
• a recording material consisting of a paper support and a pigment and Binder-containing layer, wherein the paper consists of a mixture of softwood sulfate and eucalyptus pulp, has a wet elongation in the transverse direction ⁇ 3.0, a tear length ratio longitudinal / transverse ⁇ 2, a bending stiffness ratio longitudinal / transverse ⁇ 2 and a density ⁇ 0.8.
• the paper carrier according to the invention can be produced on the machines customary in the paper industry, in particular on a Yankee paper machine.
• the softwood sulfate pulp is pine sulfate pulp.
• the proportion of softwood sulfate pulp is 5% to 80%, in particular 10% to 40% of the total pulp.
• This composition has proven to be advantageous for achieving high dimensional stability.
• inorganic pigments such as calcium carbonate, clay, titanium dioxide and silicates can be added.
• the orientation of the fibers in the longitudinal and transverse directions must be chosen so that there is a longitudinal / transverse ratio ⁇ 2.0 for the tear length and the bending stiffness. All compounds customary in the paper industry can be used as sizing and wet strength agents.
• the paper can be both acid and neutral sized.
• the moisture expansion across the fennel must be ⁇ 3.0%, in a preferred embodiment ⁇ 2.0%.
• the density of the paper must be ⁇ 0.8, in a preferred embodiment ⁇ 0.7.
• the basis weight of the paper according to the invention is 60 g / m 2 to 220 g / m 2 . In a preferred embodiment, the weight per unit area is 80 g / m 2 to 160 g / m 2 .
• the receiving layer of the receiving material according to the invention contains silica as a pigment or a mixture of silica with other pigments such as aluminum oxide, calcium carbonate, magnesium carbonate, titanium dioxide and silica gel.
• a mixture of a polyvinyl alcohol with silanol groups, a cationic polyvinyl alcohol, a cationic polyacrylate, a polyvinyl alcohol mixed with boric acid and a cationic polymer based on an acrylic acid ester is used as the binder.
• This mixture of binders achieves high water resistance, high color densities and good light stability. Leakage of the colors at the edges of color areas in mixed colors with a magenta component is avoided.
• dye-fixing agents such as poly-dadmac, dyes, optical brighteners and alcohols.
• the proportion of the cationic polyvinyl alcohol in the ink-receiving layer can be 5% by weight to 20% by weight, in particular 10% by weight to 15% by weight, based on the dried layer.
• the proportion of the polyvinyl alcohol with silanol groups in the ink-receiving layer can be 5% by weight to 20% by weight, in particular 10% by weight to 15% by weight, based on the dried layer.
• the proportion of the polyvinyl alcohol with boric acid in the ink receiving layer can be 5% by weight to 20% by weight, in particular 10% by weight to 15% by weight, based on the dried layer.
• the proportion of the cationic polyacrylate in the ink-receiving layer can be 2% by weight to 20% by weight, in particular 5% by weight to 10% by weight, based on the dried layer.
• the proportion of pigment or pigment mixture in the ink-receiving layer can be 30% by weight to 70% by weight, in particular 50% by weight to 60% by weight, based on the dried layer.
• the coating weight of the ink receiving layer is between 2 g / m 2 and 16g / m 2, in particular between 4 g / m 2 and 12g / m 2.
• Table 2 composition a b c d amorphous silicon dioxide 18%, commercially available 20.00 25.00 28.00 35.00 amorphous silicon dioxide 18%, commercially available 20.00 25.00 28.00 35.00 Polydadmac 40%, 4.00 4.00 4.00 4.00 cationic acrylate 20%, commercially available 7.00 14.00 8.00 7.00 cationic acrylic acid ester 20%, commercially available 15.00 10.00 10.00 8.00 Polyvinyl alcohol with boric acid 10%, commercially available 15.00 15.00 cationic polyvinyl alcohol 20%, commercially available 19.00 7.00 8.00 5.00 Polyvinyl alcohol with 8% silanol groups, commercially available 14.00 6.00 Order g / m2 7.20 9.40 8.80 10.30
• the paper 1 produced according to the invention was coated with the coating compositions a to d produced according to the invention (example 1a, 1b, 1c, 1d).
• Paper 2 produced according to the invention was coated with coating composition a produced according to the invention (Example 2a).
• the paper 3 produced according to the invention was coated with the coating composition d produced according to the invention (example 3d).
• This paper support was provided with an ink-receiving layer which, as a binder, contained a mixture of a vinyl acetate, butyl acrylate, Versatic acid copolymer and a polyvinyl alcohol.
• a silica was used as the pigment.
• Other additives were defoamers, dyes and ink fixing aids.
• Comparative example V2 was a commercially available paper from Hoffmann and Engelmann type HRC 600/1.
• a paper support and an ink-receiving layer were prepared according to Example 6 of GB 2 210 812.
• the color density was measured using a Gretag Densitometer type 186D on the colors cyan, magenta, yellow and black. Using a computer program, the colors cyan, magenta, yellow and black are printed in a calculated target density. The actual density was measured with a Gretag Densitometer type 186D.
• the printed papers are placed in warm water at 25 ° C for 1 minute and dried. The color density is measured before and after washing. The remaining color density is given in percent.
• the field distance is the distance between two colored areas and should be 1mm.
• the actual distance is determined with a microscope with a measuring device.
• the field distance is a measure of the image sharpness or point distance.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Ink Jet Recording Methods And Recording Media Thereof (AREA)
• Paper (AREA)
• Application Of Or Painting With Fluid Materials (AREA)

Applications Claiming Priority (2)

Publications (3)

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ID=7783759

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (9)

Citations (2)

Family Cites Families (6)

• 1996
  • 1996-01-26 DE DE19602793A patent/DE19602793C1/de not_active Revoked
• 1997
  • 1997-01-04 DK DK97100087T patent/DK0786552T3/da active
  • 1997-01-04 DE DE59707178T patent/DE59707178D1/de not_active Revoked
  • 1997-01-04 PT PT97100087T patent/PT786552E/pt unknown
  • 1997-01-04 EP EP97100087A patent/EP0786552B1/fr not_active Revoked
  • 1997-01-04 ES ES97100087T patent/ES2176529T3/es not_active Expired - Lifetime
  • 1997-01-27 JP JP9027261A patent/JPH09240141A/ja active Pending
• 1998
  • 1998-12-21 US US09/217,720 patent/US6068733A/en not_active Expired - Lifetime

Patent Citations (2)

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