JPH04503193A - print receptivity coating - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] "Pouring" ■Anus” Non-impact printing can be done using ion deposition printers, laser printers, or Xerox printers. Trademark type printer, inkjet printer and thermal transfer Toners or other printing media (collectively referred to as "toners") such as those produced by printers This is accomplished by applying to the support. Such printing can be done on paper, plastic A wide variety of supports can be used, such as wood and vinyl.

Toner adhesion to the substrate described above is not completely satisfactory. During this period, the friction of the toner printed on the support causes the toner to press against the support. Toner printed with an ion deposition printer that is only force fused In this case, it will peel off partially.

Laser printers and Xerox trademark type printers require that they This results in slightly better adhesion as it fuses to the support.

A need exists to improve such adhesion and make toners rub resistant. these That purpose is the subject of the present invention.

Book "1 Ran 9" [I Improved toner adhesion and rub resistance, especially when melted by pressure alone at room temperature It has been discovered that what can be achieved with respect to toners. This improved adhesion During curing or drying, rheometrics, mechanical specs Trometer, Model 800 when measuring at 25°C and 10 radians/sec. Dynamic range of approximately 0.01XlO@~26X10" dyne/cm" Polymer films suitable for forming print-receptive coatings with storage tensile modulus This is accomplished by applying a film-forming material to the printing support. This elastic modulus within the range, the coating is soft enough to deform and accept the toner, but only without undue soiling and without peeling the toner from the coating during normal handling. , and may also be fed when the rollers in the printing machine contact each other (filter papers may stick to each other or the machine may It is not so soft that it causes the machine to jam and become jammed.

Although print-receptive coatings can be advantageously applied to a wide variety of substrates, preferred substrates include is a compressible support, most preferably a porous compressible support such as paper or a pressure sensitive support. It is a label structure.

It is suitable for forming print-receptive coatings, and is also suitable for forming print-receptive coatings, and when cured or dried, Virtually any polymeric film-forming material can be used as a coating as long as it has a Can be used.

The polymeric film-forming materials used to form the brush covers of the present invention are water-based Using emulsion or organic solvent system or UV irradiation before toner transfer Prepared using a 100% solids reaction system that is cured by (UV) or electron beam radiation. can be applied to a support and also cured or dried on the support. Vine. The coating viscosity of the print receptive coating is most preferably should be high enough to prevent

The coating has utility as a surface for single cut sheets or for label facing materials . It prevents contact barcode readers from scraping the barcode image. It is particularly useful when printing barcodes.

Certain polymeric materials suitable for use in forming coatings of the 100% solids reaction systems of the present invention The materials include acrylated urethane oligomers, acrylated epoxy oligomers and polyesters. Acrylated oligomers selected from the group consisting of acrylic oligomers or those It is a mixture of

LL next day and above Typical formulations of polymeric materials suitable for forming print-receptive coatings are shown in the table below. Describe it in

Dynamic storage tensile modulus E゛ of each formulation in Table I, dynamic tensile The loss modulus E'' and loss tangent (tan d=E''/E') are shown in Table H below. table In the middle, each cured formulation has the softest coating (No. 12) to the hardest coating (No.

7).

Table II also shows each formulation using a frequency of 10-100 rad/sec for comparison. The modulus of is written.

A time of 0.1 seconds (equivalent to degrees of 10 radians/second) is given at any given time during the melting operation. Approximate the time to apply pressure to a given toner particle and the coating modulus at that frequency. is an important parameter for measuring the adhesion and abrasion resistance of toners. Believable.

20 lb/manufactured by Boise Ca5cade CO9 The UV curable coating applied to the ion deposition grade bond paper is 300W. /in medium pressure mercury vapor UV lamp. The coating viscosity when applied is , at ioOrpm by Brookfield Claymeter using spindle N096. When measured, it was in the range of 350 to 2500 cps. Under these conditions, a good The surface coating is applied without harmful penetration into the porous sheet (i.e., . The linear velocity was 70 ft/min.The application to the drying distance of e24Ln was 1.7 Resulting in a curing time of seconds. All coatings are greater than 30 dynes/cm” It had a high surface energy. The UV-curable coating was applied using a flexographic printing technique. , but other coating techniques known in the art may also be used.

The required weight of the coating is 0.5-5 g/m''.

12 0.3 1.2 0.33 1.16 1.10 0.979 0.9 1.0 0.28 0.40 G, 31 0.40II 2.2 2.5 1. 24 0.23 0.11 0.091 5.9 9.1 1.89 2.36 0.32 0.265 6.2 9.1 1.72 2.21 0.28 0 ．． 2410 7.6 10.7 2.20 2.68 0.29 0.256 g, 5 11.2 1.79 1.95 0.21 0.174 8.7 11 ．． 1 1.53 1.63 0.18 0.158 10.2 13.0 1. 50 1.96 0.15 G, 153 21.2 22.4 0.74 0. 85 G, 04 0.047 25.9 2g, 6 2.10 2.17 0. 08 0.08 Omoteda is a test of how well the toner adheres to the coating of the present invention. The scaled coatings were applied to 20 lb bond paper as described above. On the coated paper, Apply pressure alone to the toner on top of it, using an alphanumeric test pattern as an image. Del-phax S-30 engine operated at room temperature C, Itoh, electronics model using 00, Megarai The toner was printed by fusing on a 1/30 printer. jammin This multi-roll machine exhibits excellent performance against blocking or blocking. No delivery problems were experienced. Toner is a coach based in Kent, England. Coatea Special Products Co. product Delfax Mono The component was an ion deposit eye toner. l sheet of uncoated paper ( control) and eight different coating formulations as listed in Table 1. Apply adhesive tape (Scotch 61O) to the toner printed on 8 sheets of coated paper. used. The results are shown in Table ■. However, from papers with formulations 1 to 8, their legibility was negatively affected. It did not remove the toner sufficiently.

The amount of toner removed as described above is measured with respect to its legibility, and the legibility is measured by a Macbeth PCMn device. PCMff device prints Contrast, that is, the reflectance of the printed image relative to the reflectance of the paper. Measure and give print contrast readings as listed in Tables 1 and 2. printing Contrast readings are expressed as 100 times the decimal reading of the instrument or as a percentage. Recorded in ■ and table ■. PCMn has a read diameter of 0.008 inches. measurement Fixed values are taken at the intersection of the horizontal and vertical parts of letters such as rBJ and rEJ. It was an average of 5-7 readings. Print contrast readings of 70% or higher are Generally legible.

The print contrast measurements listed in Tables ■ and Table ■ are based on "C ” was obtained by a PCMff device using a filter. "C" filter is about 6 It has a response range of 39 nm to 110 nm, and the center at a wavelength of 800 nm. has a specific peak response.

Table-1■ 1 5.9 9.1 95.8 94.55 6.2 9.1 9L8 95. 16 8.5 11.2 96.4 94.54 8.7 11.1 95.9 88.68 10.2 13.0 9B, 6 89.32 14.1 1? , 0 95.6 93.0 Table ■ is a different alphanumeric test pattern as an image The results of measurements performed using PCMn are shown.

Table-1■ Ebecryl (Ebecry 1.) 4833 is an acrylic acid used in the present invention. A trade name for urethane oligomers manufactured by RadCure, Norfolk, Virginia. Commercially available from Radcu, re 5 specialties There is. Ebecryl 4833 reacts with incyanide and polyester polyol. This reaction yields a urethane main chain, which is then reacted with acrylic acid to produce acrylated urethane. Prepared by producing monomers. Acrylated urea used in the present invention Tan oligomers have a molecular weight of about 1.500 and a functionality of 2. This oligomer - constitutes about 90% solids by weight, the remainder being diluent reactive monomer, N-vinyl -2-pyrrolidone.

This oligomer containing a diluent monomer has an acid number of 0 to 3, a color of 1 to 3, and a color of 14 Viscosity of 1670-2670 at 0@F and 775-11 at 160"F It has a viscosity of 75. Weight per gallon is 9.2-9.41b.

Ebecryl 769 is the trade name of the polyacrylic oligomer used in the present invention. Commercially available from RadCure Specialties, Norfolk, Virginia. Ru.

Becryl 769 contains about 74% by weight polyacrylic oligomer and about 26% by weight It is a blend consisting of inbornyl acrylate. This blend has the following properties: :Specific gravity 1.06, vapor pressure <0.3mm mercury, volatilization loss 0.3weight and evaporation Speed 1. Butyl acetate has an evaporation rate of 1 and lacks water solubility.

Ebecryl 4883 used in the present invention is a urethane acrylate oligomer. Acrylate monomer tripropylene glycol diacrylate with 85% by weight approx. 15% by weight. It's Wisconsin Boat Washington It is commercially available from Radocure Inc. This blend has a vapor pressure of <0.1 mm mercury. , molecular weight approximately 1500, specific gravity 1.10, volatilization loss <0.3 weight and evaporation rate <1 and the evaporation of butyl acetate is l.

CMD3703 used in the present invention is commercially available from the above-mentioned Radocure Company. Added acrylated epoxy oligomer, especially 5% hydroxypropyl acrylate. diacrylate ester of amine-modified bisphenol A type epoxy resin It is the trademark name of Le. It has a viscosity of 2.0OOcps (65℃), a guard of 3-4 It has an acid number of 3, a theoretical molecular weight of 834 and a theoretical functionality of 2.

A variety of reactive diluents can be used in the present invention (up to 15%), typical of which Examples are N-vinyl-2-pyrrolidone, trimethylolpropane triacrylate. , 1,6-hexanediol diacrylate, diethylene glycol diacrylate vinyl acetate and vinyl acetate.

A variety of photoinitiators can be used in the present invention, a typical example of which is 2.2-jet. oxyacetophenone, N-methyljetanolamine and benzophenone. All products are manufactured by Upjohn Co., North Haven, CT. It is.

The Z6040 is manufactured by Dow Corning, Midland, Michigan. It is a trade name of a silane coupling agent used in the present invention. It is 1.070 It has a specific gravity and a viscosity (25°C) of 3 cSt.

Joncryl 80 used in the present invention has a viscosity of 400 cps and a weight of 8.7 lb. Milk for adhesion to polyolefins or foils with physical properties of /gallon and pH 8.3 S.C., U.S., Wisconsin, regarding acrylic polymer dispersions in appearance and appearance. It is a product name of Johnson & Son Company.

Robrex AC-1533 has a solid content of 46-47%, pHs of 8-9.2, and a 8.8 lb/US gallon (wet) and 9.43 lb/US gallon (dry) .

N+N,-dimethylaminoethanol as neutralized amine, minimum film Formation temperature 21°C and John (Tuk).

n) Hydroxyl functional acrylic emulsion with hardness (KHN) properties of 6-7 Rohm & Co., Philadelphia, Pennsylvania, regarding It is a product name of Haas Corporation.

Matting agent 0K412 is a 4% aqueous suspension with a SiOz content of 99% and a pH of 6. Pop density 120g/1. It has a specific gravity of 19, a refractive index of 1.45 and an average particle size of 3.1 m. Degussa's trademark for finely divided silica.

The excessive gloss imparted to the paper from pressure fusing is recognized as harmful. In that case, Table V For example, use a suitable amount of a matting agent such as silica to reduce the gloss of the coating. can be added. Gloss measurements in Table V were performed using a Gardner GG-9095 polygonal gloss meter. It was carried out by In Table V, Formulation 10 is the same as Formulation 1 except for the addition of silica. It is the same.

Table--y The embodiments of the invention selected herein for disclosure are presently recognized as preferred. However, the present invention in all disclosed embodiments falls within the spirit and scope of the invention. It should be understood to cover all changes or modifications.

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Claims (36)

[Claims] 1. Polymers suitable for forming print-receptive coatings for substrates used in non-impact printing. a polymer film-forming material, wherein the coating, when cured or dried, on a mechanical spectrometer at 25°C and 10 rad/sec. Dynas in the range of approximately 0.01 x 10° to 26 x 10° dynes/cm2 when measured Polymeric film-forming material with a mic storage tensile modulus. 2. In the claims, the film-forming material is applied to the support as an aqueous emulsion. Polymer film-forming material according to item 1. 3. Polymeric film-forming material according to claim 1, having a matting agent. . 4. A print-receptive coating for a substrate used in non-impact printing, the coating being an acrylic contain oligomers or mixtures thereof, and when cured, rheometric Measured on a canonical spectrometer at 25°C and 10 radians/sec. dynamic range of approximately 0.01 x 10° to 26 x 10° dynes/cm2 when Print receptive coating with storage tensile modulus. 5. 5. A print-receptive coating according to claim 4, comprising a matting agent. 6. A print-receptive coating for a support used in non-impact printing, the coating comprising: Essentially acrylated urethane oligomers, acrylated epoxy oligomers and poly Contains an appropriate amount of oligomer selected from the group consisting of acrylic oligomers, and During curing, on a rheometric mechanical spectrometer, 25°C, 10 la. Approximately 0.01 x 10° to 26 x 10° dyne/second when measured in degrees/second Print receptive coating with dynamic storage tensile modulus in the cm2 range. 7. A print-receptive coating for a support used in non-impact printing, the coating being Lylated urethane oligomer, acrylated epoxy oligomer and polyacrylic an appropriate amount of an oligomer selected from the group consisting of oligomers, a reactive diluent, and photoinitiation. Contains a chemical agent, and when cured, it can be easily observed on a rheometric mechanical spectrometer. , about 0.01 x 10° to 26 when measured at 25°C and 10 rad/sec degrees Marks with dynamic storage tensile modulus in the ×10° dynes/cm2 range Printable coating. 8. acrylated urethane oligomer in the range of about 20-80% by weight of the total coating; Also, acrylated epoxy oligomers range from about 30 to 80% by weight, and also poly Claim 6, or wherein the acrylic oligomer is in the range of about 20-60% by weight. Print receptive coating according to item 7. 9. A print receptive coating for a support used in non-impact printing, the coating comprising: Approximately 20% by weight acrylated urethane oligomer, approximately 55% by weight polyacrylic A print-receptive coating comprising a oligomer and appropriate amounts of a reactive diluent and a photoinitiator. 10. A print receptive coating for a support used in non-impact printing, the coating comprising: Approximately 80% by weight acrylated urethane oligomer and A print-receptive coating containing appropriate amounts of a reactive diluent and a photoinitiator. 11. A print receptive coating for a support used in non-impact printing, the coating comprising: about 80% by weight acrylated epoxy oligomer and A print-receptive coating containing appropriate amounts of a reactive diluent and a photoinitiator. 12. A print-receptive coating for a support used in non-impact printing, the coating comprising: Approximately 20% by weight acrylated urethane diluted with N-vinyl-2-pyrrolidone The oligomer and the acrylic monomer are tripropylene glycol diacrylate. about 55% by weight of a urethane arylate/acrylate monomer blend and a print-receptive coating comprising a reactive diluent and a photoinitiator in appropriate amounts. 13. A print receptive coating for a support used in non-impact printing, the coating comprising: Approximately 40% by weight acrylated urethane oligomer, approximately 40% by weight polyacrylic A print-receptive coating comprising a oligomer and appropriate amounts of a reactive diluent and a photoinitiator. 14. A print receptive coating for a support used in non-impact printing, the coating comprising: Approximately 55% by weight acrylated urethane oligomer, approximately 20% by weight polyacrylic A print-receptive coating comprising a oligomer and appropriate amounts of a reactive diluent and a photoinitiator. 15. A print receptive coating for a support used in non-impact printing, the coating comprising: Approximately 40% by weight acrylated urethane oligomer, approximately 40% by weight acrylated epoxy xyoligomer and A print-receptive coating containing appropriate amounts of a reactive diluent and a photoinitiator. 16. A print receptive coating for a support used in non-impact printing, the coating comprising: Approximately 40% by weight polyacrylic oligomer, approximately 40% by weight acrylated epoxy ligoma and A print-receptive coating containing appropriate amounts of a reactive diluent and a photoinitiator. 17. 10 rad at 26°C on a rheometric mechanical spectrometer Approximately 0.01 x 10° to 26 x 10° dynes when measured using degrees per second Cured print receptive porous material with dynamic storage tensile modulus in the /cm2 range. Support with reamer coating. 18. 18. The support according to claim 17, wherein the support is a pressure sensitive label material. 19. 18. The support according to claim 17, wherein the support is paper. 20. 18. The support according to claim 17, wherein the support is vinyl. 21. 18. A support according to claim 17, wherein the support is plastic. 22. A polymer coating is applied to the support, which is a pressure-sensitive label material, and printing is done. 18. The coating according to claim 17, which is applied to the coated support by on-deposition printing. support. 23. A support having a cured print receptive coating, the coating comprising an acrylic oligomer. rheometric mechanical spectrophotometer or a mixture thereof; Approximately 0.01 when measured using a degree of 10 radians/second at 26°C on the meter Dynamic storage tensile bullets ranging from ×10° to 26×10° dynes/cm2 A support that has a specificity. 24. Claim 17, wherein the coating is applied to the support as an aqueous emulsion. Support for mounting. 25. 24. A support according to claim 23, wherein the coating has a matting agent therein. 26. A support having a cured print receptive coating, said coating comprising: Essentially acrylated urethane oligomers, acrylated epoxy oligomers and poly Contains an excess amount of oligomer selected from the group consisting of acrylic oligomers, and During curing, 10 rad at 25°C on a rheometric mechanical spectrometer. Approximately 0.01 x 10° to 26 x 10° die when measured using degrees in amps/second A support having a dynamic storage tensile modulus in the range of 100 mm/cm2. 27. A support having a cured print receptive coating, the coating comprising an acrylated urethane. Tan oligomers, acrylated epoxy oligomers and polyacrylic oligomers. a suitable amount of an oligomer selected from the group consisting of a reactive diluent and a photoinitiator; 25°C on a rheometric mechanical spectrometer during curing. approximately 0.01 x 10° to 26 x when measured using a degree of 10 rad/sec at Supported material with dynamic storage tensile modulus in the 10° dynes/cm2 range. Holding body. 28. The acrylated urethane oligomer ranges from about 20 to 80% by weight of the total coating. , also about 30-80% by weight of acrylated epoxy oligomer, and also about 30% to 80% by weight of polyacrylated epoxy oligomer. Claim 26, or wherein the crylic oligomer is in the range of about 20-60% by weight. 28. A support having a cured print receptive coating according to clause 27. 29. A support having a cured print receptive coating, the coating comprising: Approximately 20% by weight acrylated urethane oligomer, approximately 55% by weight polyacrylic A support comprising a oligomer and appropriate amounts of a reactive diluent and a photoinitiator. 30. A support having a cured print receptive coating, the coating comprising: Approximately 80% by weight acrylated urethane oligomer and A support containing appropriate amounts of a reactive diluent and a photoinitiator. 31. A support having a cured print receptive coating, the coating comprising: about 80% by weight acrylated epoxy oligomer and A support containing appropriate amounts of a reactive diluent and a photoinitiator. 32. A support having a cured print receptive coating, the coating comprising: Approximately 20% by weight acrylated urethane diluted with N-vinyl-2-pyrrolidone Oligomer and acrylate monomer are tripropylene glycol diacrylate About 55% by weight of urethane acrylate oligomer/acrylate polymer Nomarblend, and A support containing appropriate amounts of a reactive diluent and a photoinitiator. 33. A support having a cured print receptive coating, the coating comprising: Approximately 40% by weight acrylated urethane oligomer, approximately 40% by weight polyacrylic A support comprising a oligomer and appropriate amounts of a reactive diluent and a photoinitiator. 34. A support having a cured print receptive coating, the coating comprising: Approximately 55% by weight acrylated urethane oligomer, approximately 20% by weight polyacrylic A support comprising a oligomer and appropriate amounts of a reactive diluent and a photoinitiator. 35. A support having a cured print receptive coating, the coating comprising: Approximately 40% by weight acrylated urethane oligomer, approximately 40% by weight acrylated epoxy xyoligomer and A support containing appropriate amounts of a reactive diluent and a photoinitiator. 36. A support having a cured print receptive coating, the coating comprising: Approximately 40% by weight polyacrylic oligomer, approximately 40% by weight acrylated epoxy ligoma and A support containing appropriate amounts of a reactive diluent and a photoinitiator.