Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Reexamination Certificate
1999-03-26
2001-11-20
Hess, Bruce H. (Department: 1774)
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
C428S690000
Reexamination Certificate
active
06319591
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention is directed to ink jet recording sheets primarily for use in creating simulated photographic-quality images or prints with for example non-photographic imaging such as ink jet printing and xerography. More specifically, the present invention is directed to creating simulated, photographic-quality prints on a transparent or translucent recording sheet with pigmentless ink receiving hydrophilic layers on the front side of a transparent substrate, and wherein the back, or reverse side of the substrate is coated with a colorant layer containing luminescence imparting phosphors, liquid crystalline nitrites, or isothionitriles and which back side can be written upon with a pen, pencil, xerography and ink jet printing. Advantages of the recording components of the present invention include, for example, the enablement of enhanced ink jet image quality and brighter ink jet images.
PRIOR ART
U.S. Pat. No. 3,154,461 discloses a polymeric film with a matte-finish and a cellular structure achieved with the addition of fillers which roughens the surface upon stretching of the films and renders them receptive to marking by crayon, pencil and ball-point pen.
U.S. Pat. No. 3,515,626 discloses laminates comprising layers of oriented films of thermoplastic materials in which at least one of the outermost layers contains a suitable inert additive.
Disclosed in U.S. Pat. No. 3,790,435 are synthetic papers with acceptable foldability of a nonlaminated structure of one thermoplastic resin film or a laminated structure of at least two thermoplastic resin films. Each of the films can be stretched or molecularly oriented, and one or more of the films contain a fine inorganic filler to provide paperness of the film. According to this patent, some of the films may contain poly(styrene) as a foldability improving agent.
There is disclosed in U.S. Pat. No. 4,663,216 a synthetic paper printable in high gloss, and comprised of (1) a multilayer support; (2) a layer of a transparent film of a thermoplastic resin free from an inorganic fine powder formed on one surface of the support (1); and (3) an aqueous primer layer of a specific material, reference the Abstract of the Disclosure for example.
Further, there is disclosed in U.S. Pat. No. 4,705,719 a synthetic paper of multilayer resin film comprising a base layer (
1
a
) of a biaxially stretched thermoplastic resin film, and a laminate provided on at least one of the opposite surfaces of the base layer, the laminate including a paper-line layer; (
1
b
) a surface layer; and (
1
c
) the paper like layer containing a uniaxially stretched film of thermoplastic resin containing 8 to 65 parts by weight of an inorganic fine powder, the surface layer containing a uniaxially stretched film made of thermoplastic resin. Also known is an electrostatic recording material comprised of a multi-layered sheet support with an electroconductive layer and dielectric layers formed thereon, reference, for example, U.S. Pat. No. 4,795,676.
Moreover, there is disclosed in U.S. Pat. No. 5,075,153 a never-tear paper comprised of a plastic supporting substrate, a binder layer comprised of polymers selected from the group consisting of (1) hydroxypropyl cellulose; (2) poly(vinyl alkylether); (3) vinylpyrrolidone/vinylvinylacetate; (4) quaternized vinylpyrrolidone/dialkyl aminoethyl/methacrylate; (5) poly(vinyl pyrrolidone); (6) poly(ethyleneimine) and mixtures thereof; and a pigment, or pigments.
Ink jet substrates such as transparencies and papers used in various printing and imaging processes are known. U.S. Pat. No. 5,624,743, the disclosure of which is totally incorporated herein by reference, discloses a transparency comprised of a supporting substrate, thereover a first coating layer comprised of a binder having a glass transition temperature of less than about 55° C., a cellulosic viscosity modifier, a lightfast compound and a biocide; and a second ink-receiving coating layer comprised of a hydrophilic binder, an oxyalkylene containing compound, a dye mordant, an optional filler, and an optional biocide; and wherein the first coating is in contact with the substrate and is situated between the substrate and the second ink coating, and which transparency possesses a haze value of from about 1 to about 10 and a lightfast value of from about 80 to about 95.
DETAILED DESCRIPTION OF THE INVENTION
Aspects of the present invention relate to a recording component, such as a recording sheet comprising a substantially transparent substrate situated between a hydrophilic ink receiving layer and a colorant hydrophobic luminescent layer; a recording sheet wherein the substrate thereof is selected from the group consisting of (1) polyethylene terephthalate; (2) polyethylene naphthalate; (3) polysulfone; (4) cellulose triacetate; (5) polyvinyl chloride; and (6) polypropylene; a recording sheet wherein the ink receiving layer is comprised of a hydrophilic polymeric binder, a dye mordant, an ink spreading compound, a lightfastness component, a filler, and a biocide; a recording sheet wherein the hydrophilic polymeric binder is present in an amount of from about 34 parts by weight to about 83 parts by weight, the ink spreading compound is present in an amount of from about 25 parts by weight to about 5 parts by weight, the dye mordant is present in an amount of from about 25 parts by weight to about 5 parts by weight, the lightfastness component is present in an amount of from about 12 parts by weight to about 1 part by weight, the filler is present in an amount of from about 1 part by weight to about 5 parts by weight, and the biocide is present in an amount of from about 3 parts by weight to about 1 part by weight, and wherein the total of these components is about 100 percent; a translucent inkjet component wherein the thickness of the ink receiving layer is from about 0.1 to about 25 microns; a recording sheet wherein the hydrophilic binder is selected from the group consisting of (1) ethylhydroxyethyl cellulose; (2) hydroxyethyl cellulose; (3) hydroxyethylmethyl cellulose; (4) hydroxypropylmethylcellulose; (5) sodium carboxymethyl cellulose; (6) poly(ethylene oxide); and mixtures thereof; a recording sheet wherein the hydrophilic binder is (1) ethylhydroxyethyl cellulose, or (2) hydroxypropyl methyl cellulose; a recording sheet wherein the ink receiving layer contains an ink spreading compound optionally present in amounts of from about 40 parts by weight to about 1 part by weight, and which compound is selected from the group consisting of amino alcohols, heterocyclic amines, and acid salts; a recording sheet wherein the ink spreading amino alcohols of the ink receiving layer are selected from the group consisting of (1) 2-(2-aminoethoxy) ethanol; (2) 2-amino-3-cyclohexyl-1-propanol; (3) amino hexanol; (4) 2-amino-3-methylbenzyl alcohol; and (5) 3-aminomethyl-3,5,5-trimethyl cyclohexanol; a recording sheet wherein the ink spreading heterocyclic amines of the ink receiving layer are selected from the group consisting of (1) 1-(3-amino-propyl)-2-pyrrolidone; (2) 4-(2-aminoethyl) morpholine; (3) 4-(3-aminopropyl) morpholine; (4) 1-(2-aminoethyl) piperazine; and (5) 4-amino-2,2,6,6-tetramethylpiperidine; a recording sheet wherein the ink spreading acid salts are selected from the group consisting of (1) tetra ethyl ammonium hexafluoro phosphate; (2) (R)-3-pyrrolidinolhydrochloride; (3) 4-bromopiperidine hydrobromide; (4) 3-amino-1H-isoindole hydrochloride; and (5) (S)-(+)-2-amino-3-cyclohexyl-1-propanol hydrochloride; a recording sheet wherein the ink spreading compounds are (1) 2-amino-3-methylbenzyl alcohol; (2) 3-aminomethyl-3,5,5-trimethyl cyclohexanol; (3) 4-(2-aminoethyl) morpholine, or (4) (S)-(+)-2-amino-3-cyclohexyl-1-propanol hydrochloride; a recording sheet wherein the colorant layer is a pigmented coating comprised of a polymeric binder, an antistatic agent, a colorant, such as a pigment, a luminescence imparting compound, an optional lightfastness compound and an optional biocide; a recording sheet wherein the colorant
Byorick Judith L.
Grendzynski Michael E.
Hess Bruce H.
Xerox Corporation
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