Abstract: A recording medium includes a magnetic material and a pulp-fiber, a minimum value of shortest distances between the magnetic material and an edge of the recording medium substantially parallel to the pulp-fiber orientation direction being about 1 mm or more.

Abstract: A recording medium includes a magnetic material and a pulp-fiber, a minimum value of shortest distances between the magnetic material and an edge of the recording medium substantially parallel to the pulp-fiber orientation direction being about 1 mm or more.

Abstract: A recording paper contains a pulp fiber and a magnetic fiber having a large Barkhausen effect. The fiber orientation ratio of this recording paper by an ultrasonic propagation velocity method is in a range of more than 1.3 to less than 1.8, and the degree of shrinkage in an MD thereof is 0.25% or less.

Abstract: A recording paper contains a pulp fiber and a magnetic fiber having a large Barkhausen effect. The fiber orientation ratio of this recording paper by an ultrasonic propagation velocity method is in a range of more than 1.3 to less than 1.8, and the degree of shrinkage in an MD thereof is 0.25% or less.

Abstract: A transfer paper for electrophotography contains a pulp fiber and a magnetic material for generating a large Barkhausen effect. An average dehydration speed S1a (an average value (% by mass/second) of dehydration speeds S1 of 5 sheets of paper) is 0.15 or less. The dehydration speed S1 is represented by (W1a?W1b)/30. Here, W1a represents a moisture content ratio (% by mass) of the paper after moisture conditioning, and W1b represents a moisture content ratio (% by mass) of the paper after a dehydration process including leaving the paper in a 80° C. environment for 30 seconds after moisture conditioning.

Abstract: A recording medium includes a magnetic material and a pulp-fiber, a minimum value of shortest distances between the magnetic material and an edge of the recording medium substantially parallel to the pulp-fiber orientation direction being about 1 mm or more.

Abstract: Disclosed is a recording paper containing pulp fibers and magnetic fibers, in which the fiber orientation ratio is within a range selected from the range from 1.8 to 3.0 and the range from 1.0 to 1.3 as measured by an ultrasonic wave velocity method.

Abstract: An electrophotographic transfer paper has a substrate and a thermoplastic foamed resin layer which is provided on at least one surface of the substrate and has pores. In the electrophotographic transfer paper, the temperature at which the viscosity of the thermoplastic foamed resin layer becomes 1×10 4 Pa·s ranges from 60° C. to 100° C. and a gradient R of a viscosity-temperature curve of the thermoplastic foamed resin layer defined by the following Equation (1) ranges from 0.02 to 0.10: R={Log(?t)?Log(?t+20)}/20 ??(1) where ?t indicates 1×104 Pa·s and ?t+20 indicates the viscosity (Pa·s) of the thermoplastic foamed resin layer at the temperature higher by 20° C. than the temperature showing the viscosity ?t.

Abstract: The present invention provides a coated paper having, on at least one side of its base paper, two or more coating layers comprising a pigment and an adhesive as main components, said coated paper having, in its base coating layer in contact with the base paper, at least 50 parts by mass of a flat shape pigment per 100 parts by mass of the total amount of the pigments, said flat shape pigment satisfying the following conditions (1) and (2), and having a Clark stiffness along the CD direction of at least 14 cm and a white paper glossiness of at least 45%: (1) an average particle size of 0.2-5.0 ?m, determined by the sedimentation method: (2) an aspect ratio (long axis/thickness) of 25-120.

Abstract: A coated paper comprised of a paper substrate, at least one surface of which is provided with at least one coating layer, characterized in that the surface of said coating layer has cracks of a width of 0.2 to 3.0 ?m and a length of 3 to 1000 ?m in an amount of 1 to 1000 cracks per mm2 is provided. In another embodiment, a coated paper comprised of a paper substrate, at least one surface of which is provided with at least two coating layers, characterized in that an inner coating layer adjoining said paper substrate comprises a pigment having a crystal structure selected from the group consisting of acicular crystal, spindle-shape crystal, columnar crystal, and rice-shape granulated crystal, and starches, and an outermost coating layer formed on said inner coating layer comprises crack formation promoting particles and a styrene-butadiene copolymer having a glass transition temperature of 20 to 150° C. is provided.

Abstract: An electrophotographic transfer paper has a substrate and a thermoplastic foamed resin layer which is provided on at least one surface of the substrate and has pores. In the electrophotographic transfer paper, the temperature at which the viscosity of the thermoplastic foamed resin layer becomes 1×100 Pa•s ranges from 60° C. to 100° C. and a gradient R of a viscosity-temperature curve of the thermoplastic foamed resin layer defined by the following Equation (1) ranges from 0.02 to 0.10: R={Log(?t)?Log(?t+20)}/20??(1) where ?t indicates 1×104 Pa•s and ?t+20 indicates the viscosity (Pa•s) of the thermoplastic foamed resin layer at the temperature higher by 20° C. than the temperature showing the viscosity ?t.

Abstract: A coated paper sheet having a coating layer formed on one or two surfaces of a substrate paper sheet and containing a pigment and a binder, wherein the pigment includes kaolin particles having an average particle size of 0.3 to 1.5 ?m and an aspect ratio L/W (L: major axis, W: minor axis of the particles) in the range of 5 to 50; the binder contains (a) a copolymer having a glass transition temperature Tg of 10 to 60° C. and a single phase structure and/or a synthetic polymeric compound having a core-shell composite structure; the coating layer surfaces have a 75 degree specular glossiness of 50% or more; and the air permeability of the coated paper sheet is 7000 seconds or less, is useful as printing sheet especially for gravure printing.

Abstract: The present invention provides an image forming method including forming an image on a transfer paper for electrophotography by using oilless fixing, in which the transfer paper for electrophotography comprises a thermoplastic foam resin layer on at least one side of a substrate, the thermoplastic foam resin layer containing a thermoplastic resin having a softening point of 50° C. to 120° C. as determined according to JIS K 7234 (Ring and Ball method), and the thermoplastic foam resin layer having an average void size of 0.5 ?m to 50 ?m on the surface thereof. A difference between a gloss before the fixing and a gloss after the fixing, on a non-image portion, is 10% to 100%.

Abstract: A coated paper comprised of a paper substrate, at least one surface of which is provided with at least one coating layer, characterized in that the surface of said coating layer has cracks of a width of 0.2 to 3.0 &mgr;m and a length of 3 to 1000 &mgr;m in an amount of 1 to 1000 cracks per mm2 is provided. In another embodiment, a coated paper comprised of a paper substrate, at least one surface of which is provided with at least two coating layers, characterized in that an inner coating layer adjoining said paper substrate comprises a pigment having a crystal structure selected from the group consisting of acicular crystal, spindle-shape crystal, columnar crystal, and rice-shape granulated crystal, and starches, and an outermost coating layer formed on said inner coating layer comprises crack formation promoting particles and a styrene-butadiene copolymer having a glass transition temperature of 20 to 150° C. is provided.

Abstract: There are provided electrophotographic transfer sheets comprising a substrate sheet which is a laminate comprising a thermoplastic resin film layer (A) adhesively laminated on at least one side of a core material layer (B) made of a paper substrate or a thermoplastic polyester-based resin film, and a toner receiving layer composed mainly of a conductive metal oxide coated on the surface of the thermoplastic resin film layer (A), characterised by having a Clark stiffness of at least 12 cm in the cross direction as measured according to JIS P8143.

Abstract: A recording sheet having a recording layer formed on a substrate sheet (for example, a paper sheet, synthetic resin film or synthetic paper sheet), and including a pigment and a binder which contains a cross-linking reaction product of styrene-acrylic copolymer which preferably has carboxyl groups and is soluble or dispersible in water, with a cross-linking agent, for example, a polyamidepolyamine compound, has excellent resistance to both water and organic solvents and is useful for both dot matrix printers and thermal transfer printers.

Abstract: An electrophotographic transfer sheet having a coating layer on at least one surface of a base material made of pulp fibers as a main body is provided. The elongation of the sheet in the cross direction when the humidity is changed from 25% RH to 90% RH at 20° C. is not higher than about 0.65% and the water content of the sheet at opening its package as measured according to JIS P8127 is approximately in the range from 3.5 to 6.5%. A method of forming a color image using color toners each containing a polyester binder resin having Mn in the range of from about 1,000 to 9,000 and using the above-described electrophotographic transfer sheet is also provided.

Abstract: A coated paper sheet having a coating layer formed on one or two surfaces of a substrate paper sheet and containing a pigment and a binder, wherein the pigment includes kaolin particles having an average particle size of 0.3 to 1.5 &mgr;m and an aspect ratio L/W (L: major axis, W: minor axis of the particles) in the range of 5 to 50; the binder contains (a) a copolymer having a glass transition temperature Tg of 10 to 60° C. and a single phase structure and/or a synthetic polymeric compound having a core-shell composite structure; the coating layer surfaces have a 75 degree specular glossiness of 50% or more; and the air permeability of the coated paper sheet is 7000 seconds or less, is useful as printing sheet especially for gravure printing.

Abstract: An electrophotographic transfer sheet having a coating layer on at least one surface of a base material made of pulp fibers as a main body is provided. The elongation of the sheet in the cross direction when the humidity is changed from 25% RH to 90% RH at 20° C. is not higher than about 0.65% and the water content of the sheet at opening its package as measured according to JIS P8127 is approximately in the range from 3.5 to 6.5%. A method of forming a color image using color toners each containing a polyester binder resin having Mn in the range of from about 1,000 to 9,000 and using the above-described electrophotographic transfer sheet is also provided.

Abstract: An electrophotographic transfer sheet having a coating layer on at least one surface base material made of pulp fibers as a main body provided. The elongation of the sheet in the cross direction when the humidity is changed from 25% RN to 90% RH at 20° C. is not higher than about 0.65% and the water content of the sheet at opening its package as measured according to JIS P8127 is approximately in the range from 3.5 to 6.5%. A method of forming a color image using color toners each containing a polyester resin having Mn in the range of from about 1,000 to 9,000 and using the above-described electrophotographic transfer sheet is also provided.