Composition suitable for multifunctional printing and recording sheet containing same

Abstract

A paper sizing or coating composition is provided, which includes; a first binder resin, which is compatible with dry toner binder resin; a second binder resin, which is compatible with liquid toner binder resin, and which is different from the first binder resin; a first pigment, which has a BET surface area of from greater than zero to about 35 m 2 /g; and a second pigment, which has a BET surface area of about 35 m 2 /g or greater, and which is different from the first pigment. Recording sheets which include the composition, methods of making the composition and recording sheets, and methods for making an image are provided.

1 . A sizing or coating composition, comprising:
 a first binder resin, which is compatible with dry toner binder resin;   a second binder resin, which is compatible with liquid toner binder resin, and which is different from the first binder resin;   a first pigment, which has a BET surface area of from greater than zero to about 35 m 2 /g; and   a second pigment, which has a BET surface area of about 35 m 2 /g or greater, and which is different from the first pigment.   
     
     
         2 . The composition of  claim 1 , wherein the first binder resin comprises one or more of a styrene-acrylic acid copolymer, styrene-butadiene acrylonitrile copolymer, styrene acrylate latex, epoxy, polyvinyl chloride, polyvinyl acetate, vinyl acetate acrylate copolymer, or a mixture thereof. 
     
     
         3 . The composition of  claim 1 , wherein the second binder resin comprises one or more of a polyethylene acrylic acid copolymer, polyethylene methacrylic acid copolymer, polyethylene imine, or a mixture thereof. 
     
     
         4 . The composition of  claim 1 , wherein the first pigment has a BET surface area of about 1-35 m 2 /g. 
     
     
         5 . The composition of  claim 1 , wherein the first pigment comprises calcium carbonate, kaolin clay, calcined clay, aluminum trihydrate, titanium dioxide, talc, plastic pigment, ground calcium carbonate, precipitated calcium carbonate, amorphous silica, modified calcium carbonate, modified calcined clay, aluminum silicate, zeolite, aluminum oxide, colloidal silica, colloidal alumina slurry, modified calcium carbonate, modified ground calcium carbonate, modified precipitated calcium carbonate, or a mixture thereof. 
     
     
         6 . The composition of  claim 5 , wherein the first pigment is calcium carbonate, kaolin clay, calcined clay, aluminum trihydrate, talc, plastic pigment, or a mixture thereof. 
     
     
         7 . The composition of  claim 1 , wherein the second pigment has a BET surface area of about 35-700 m 2 /g. 
     
     
         8 . The composition of  claim 1 , wherein the second pigment comprises calcium carbonate, kaolin clay, calcined clay, aluminum trihydrate, titanium dioxide, talc, plastic pigment, ground calcium carbonate, precipitated calcium carbonate, amorphous silica, modified calcium carbonate, modified calcined clay, aluminum silicate, zeolite, aluminum oxide, colloidal silica, colloidal alumina slurry, modified calcium carbonate, modified ground calcium carbonate, modified precipitated calcium carbonate, or a mixture thereof. 
     
     
         9 . The composition of  claim 8 , wherein the second pigment is amorphous silica, modified calcium carbonate, modified calcined clay, aluminum silicate, zeolite, aluminum oxide, colloidal silica, colloidal alumina slurry, or a mixture thereof. 
     
     
         10 . The composition of  claim 1 , which further comprises one or more of a water soluble divalent metal salt, complexing agent, optical brightening agent, sizing agent, nonreactive sizing agent, reactive sizing agent, internal sizing agent, external sizing agent, stabilizer, modified starch, unmodified starch, defoamer, surfactant, slip agent, dispersant, dye, retention aid, binder, filler, thickener, preservative, solvent, wet strength resin, dry strength resin, alum, pigment, bulking agent, microsphere, pulp fiber, diamide salt, reducing agent, or a mixture thereof. 
     
     
         11 . A method for making the composition of  claim 1 , comprising contacting, in any order:
 the first binder resin;   the second binder resin;   the first pigment; and   the second pigment,   to produce the composition of  claim 1 .   
     
     
         12 . The method of  claim 11 , which comprises first contacting one or more of
 the first binder resin;   the second binder resin;   the first pigment;   the second pigment; or   a mixture thereof,   with a paper or plastic substrate.   
     
     
         13 . The method of  claim 12 , wherein the first contacting is carried out at a size press. 
     
     
         14 . The method of  claim 11 , wherein the contacting comprises:
 contacting the first and second pigments, to produce a pigment mixture; and   contacting the pigment mixture with the first binder resin, the second binder resin,   or a mixture thereof.   
     
     
         15 . A recording sheet, comprising:
 a sizing or coating composition, comprising
 a first binder resin, which is compatible with dry toner binder resin; 
 a second binder resin, which is compatible with liquid toner binder resin, and which is different from the first binder resin; 
 a first pigment, which has a BET surface area of from greater than zero to about 35 m 2 /g; and 
 a second pigment, which has a BET surface area of about 35 m 2 /g or greater, and which is different from the first pigment; and 
   a paper or plastic substrate in contact with the composition.   
     
     
         16 . The recording sheet of  claim 15 , wherein the composition is comprised within a single layer in contact with the paper or plastic substrate. 
     
     
         17 . The recording sheet of  claim 15 , wherein the composition is comprised within first and second sublayers,
 the first sublayer being in contact with the paper or plastic substrate and comprising at least one of the first and second binder resins and at least one of the first and second pigments; and   the second sublayer being in contact with the first sublayer and comprising at least one of the first and second binder resins.   
     
     
         18 . The recording sheet of  claim 15 , wherein the paper or plastic substrate comprises a front side and a back side, and wherein the composition is in contact with both the front side and the back side. 
     
     
         19 . A method for making the recording sheet of  claim 15 , comprising contacting, in any order:
 the first binder resin;   the second binder resin;   the first pigment;   the second pigment; or   a mixture thereof, and   the paper or plastic substrate,   to produce the recording sheet of  claim 15 .   
     
     
         20 . A method, comprising:
 forming an image with a printing apparatus on a surface of a recording sheet, the recording sheet comprising:
 a sizing or coating composition, comprising 
 a first binder resin, which is compatible with dry toner binder resin; 
 a second binder resin, which is compatible with liquid toner binder resin, and which is different from the first binder resin; 
 a first pigment, which has a BET surface area of from greater than zero to about 35 m 2 /g; and 
 a second pigment, which has a BET surface area of about 35 m 2 /g or greater, and which is different from the first pigment; and 
 a paper or plastic substrate in contact with the composition.