Recording paper with resin-containing recording layer and heat sensitive adhesion layer
AssigneeJujo Paper Co., Ltd.
InventorsKoichi Nagai, Ryuji Ishikawa, Koichi Imamura, Fumio Fujimura, Youhei Shiokoshi
Life of this patent
Estimating the term…
Abstract
Recording paper for use in, for example, an electrostatic recording system, comprising an electrically conductive base layer, a photoconductive or dielectric recording layer disposed on one surface of the base layer, and a heat-sensitive bonding layer disposed on the other surface of the base layer. The bonding layer is non-tacky at normal temperature, and it develops tackiness when heated after a recording has been made on the recording paper.
Claims16
Recording paper comprising a resin-containing photoconductive or dielectric recording layer, an electrically conductive base layer, and a heat-sensitive cohesion and/or adhesion layer which develops a cohesive and/or adhesive property by heating, said recording paper being so laminated tht said recording layer lies on one surface of said base layer and that said heat-sensitive cohesion and/or adhesion layer lies on the other surface, said heat-sensitive cohesion and/or adhesion layer being tackified at a tackiness developing temperature which is lower by at least 10.degree. C. than the melting temperature of a resin of said recording layer.
Recording paper wherein a polymethacrylate resin with titanium oxide mixed therein is applied on a front surface of electrically conductive base paper which is impregnated with an quarternary ammonium salt series conductive polymer;
- a solution is applied on a back surface of said base paper, said solution being prepared by adding a synthetic terpene resin to a polyvinyl acetate -- polyacrylate ester copolymer emulsion and then adding a quaternary ammonium salt series conductive polymer as diluted in alcohol to the resultant emulsion.
Recording paper wherein one surface of base paper is impregnated with a quaternary ammonium salt series conductive polymer, a tackifier in which dialyl phthalate prepolymer powder and a petroleum resin are dispersed in water is applied on the other surface, and after drying the base paper, an acrylate ester resin is applied on a conductive layer side.
Recording paper wherein a solution is applied on a back surface of electrically conductive base paper impregnated with a quaternary ammonium salt series conductive polymer, said solution being prepared by mixing maleic acid, phthalic acid and ethylene glycol in proportions of 1 :
- 1 :
- 2, causing them to react to produce a prepolymer, and adding a hydrogenated rosin to said prepolymer;
- and a polyvinyl chloride -- polyvinyl acetate copolymer resin is applied on a front surface of said base paper.
Recording paper wherein a polyvinyl chloride -- polyvinyl acetate copolymer with zinc oxide mixed therein is applied on a front surface of electrically conductive base paper whose both surfaces are impregnated with a quaternary ammonium salt conductive polymer;
- and a solution is applied on a back surface of said base paper, said solution being prepared by adding a quaternary ammonium salt series conductive agent as diluted in water to an ethylene -- vinyl acetate copolymer emulsion.
Recording paper wherein a solution is applied on a back surface of electrically conductive base paper whose both surfaces are impregnated with a quaternary ammonium salt series conductive polymer, said solution being prepared by mixing maleic acid, phthalic acid and ethylene glycol in proportions of 1 :
- 1 :
- 2, causing them to react at 180.degree. C. for 5 hours to produce an unsaturated polyester prepolymer, and adding 100 parts of a hydrogenated rosin;
- and thereafter a methyl ethyl ketone solution of a polyvinyl chloride -- vinyl acetate copolymer resin is applied on a front surface of said base paper.
A method of manufacturing recording paper comprising the steps of coating and/or impregnating one surface of an electrically conductive base layer with a substance forming a dielectric layer, and coating and/or impregnating the other surface with a substance forming a heat-sensitive cohesion and/or adhesion layer.
Dependencies are inferred from the claim text.