Abstract: The present invention provides a recording paper including a cellulose pulp and having an ink receiving layer with a mass per unit area being 0 g/m2 or greater and less than 5 g/m2 on one surface, wherein an absorption coefficient of the recording paper is in a range of 0.5 to 4, and an e/s value represented by the following equation (1) is 15.3 or less, as well as a recording method including recording on the recording paper using an inkjet ink or an electrophotographic toner.

Abstract: An electrophotographic transfer sheet and a process for forming a color image using the same are provided, by which formation of relief of a toner image on the surface of the electrophotographic transfer sheet can be prevented, sufficient high gloss and gloss uniformity can be obtained, and formation of cracks on the surface of the electrophotographic transfer sheet can be prevented. In an electrophotographic transfer sheet containing a substrate having one surface thereof an image receiving layer containing a thermoplastic resin as a main component, a resin constituting the image receiving layer has a melt viscosity at 120° C. of about from 200 to 2,000 Pa·s and an elongation after fracture of about 50% or more, whereby the problem is solved.

Abstract: A label sheet for electrophotography, constituted of a label base member and a separator base member both made of resin film, and an image forming method with use thereof. Difference of thermal shrinkage rates in an MD direction between the label body and the separator of the label sheet after heat treatment for 5 minutes at 150° C. is in the range of −0.3% to 0.1%. Stiffness E·t3, a function of a tensile elasticity rate E (N/mm2) of the separator at 135° C. and thickness t (mm) of the separator at 23° C, 50% R.H., is 0.21 N·mm or more. Occurrences of winding around a fuser and marks of winding are suppressed, curls are small, and toner cracks do not appear even if printed matter is left in conditions of high temperature and high humidity.

Abstract: A label sheet for electrophotographic process is composed of a label body in which an adhesive layer is formed on the back surface of a label base and a separator that is tentatively bonded to the label body with the adhesive layer interposed in between so as to be peelable from the label body. Both of the label base and a separator base are made of heat-resistant resin film. A toner accepting layer contains a release agent and has surface resistivity of 1×1014 &OHgr;/□ or more. An antistatic treatment layer has surface resistivity of 1×108 to 1×1012 &OHgr;/□.

Abstract: An ink-jet recording method is provided in that upon carrying out printing at a high speed as equivalent to laser printers by using the plain paper, the optical density and the coloring property of the image are high with less occurrence of intercolor breed and feathering, and the image has high water resistance. The method contains a step of printing on recording paper having base paper mainly containing pulp fibers and a filler by using a pigment ink of at least one color at a scanning speed of a printing head of 25 cm/sec or more and a maximum ink injection amount in a range of from 6 to 30 mL/m2, the ink having a surface tension in a range of from 20 to 35 mN/r, and an aggregation degree of a pigment contained in the ink in contact with a surface of the recording paper being 5 or more.

Abstract: In an ink jet recording method, a surface of a recording paper, in which a base paper contains a pulp fiber and a filler, one surface of the base paper being coated with a polyvalent metal salt in a coating amount of from 0.1 to 3 g/m2, having a basis weight of from 63 to 100 g/m2 and an internal bond strength of from 0.05 to 0.2 N·m is printed using an ink of at least one color made of at least a pigment, a water-soluble organic solvent, water and a surfactant and having a surface tension of from 25 to 37 mN/m. According to the method, the color reproduction is improved, the inter color bleeding and the feathering of characters are reduced, the double-sided printability is provided by reducing curling and cockling occurring immediately after printing, and curling and cockling occurring after allowing to stand and drying are also reduced.

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 label sheet for electrophotography, constituted of a label base member and a separator base member both made of resin film, and an image forming method with use thereof. Difference of thermal shrinkage rates in an MD direction between the label body and the separator of the label sheet after heat treatment for 5 minutes at 150° C. is in the range of −0.3% to 0.1%. Stiffness E·t3, a function of a tensile elasticity rate E (N/mm2) of the separator at 135° C. and thickness t (mm) of the separator at 23° C, 50% R.H., is 0.21 N·mm or more. Occurrences of winding around a fuser and marks of winding are suppressed, curls are small, and toner cracks do not appear even if printed matter is left in conditions of high temperature and high humidity.

Abstract: A recording paper usable in both inkjet recording and electrophotographic recording, and an image recording method using the recording paper. The recording paper includes a base paper that is composed mainly of pulp fibers, contains a filler, and is coated with a cationic resin on one or both sides, wherein surface electric resistivity at 22° C. and 55% relative humidity is 1.0×109 to 1.0×1011 &OHgr; and volume electric resistivity at 22° C. and 55% relative humidity is 1.0×1010 to 1.0×1012 &OHgr;·cm.

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.

Abstract: An electrophotographic transfer sheet and a process for forming a color image using the same are provided, by which formation of relief of a toner image on the surface of the electrophotographic transfer sheet can be prevented, sufficient high gloss and gloss uniformity can be obtained, and formation of cracks on the surface of the electrophotographic transfer sheet can be prevented. In an electrophotographic transfer sheet containing a substrate having one surface thereof an image receiving layer containing a thermoplastic resin as a main component, a resin constituting the image receiving layer has a melt viscosity at 120° C. of about from 200 to 2,000 Pa·s and an elongation after fracture of about 50% or more, whereby the problem is solved.

Abstract: Provided is transfer paper for electrophotography having high glossiness and high surface smoothness, which is not troubled by paper blistering and toner blistering and is waved or curled little. The transfer paper is constructed by a substrate of which the both surfaces are coated with a coating layer consisting essentially of a pigment and an adhesive, and this has a characteristic in that the permeation flow rate of air (heated at 180° C. and pressurized to have a pressure of 2 kg/cm2) through it is larger than 200 ml/min, or is characterized in that the air permeation flow rate through it is larger than 200 ml/min and not more than 900 ml/min and its internal bonding strength is at least 0.38 N·m.

Abstract: An electrophotographic transfer paper comprising a substrate and coating layers formed on both sides of the substrate mainly including a pigment and an adhesive, wherein the paper has a glossiness of not less than 55% (corresponding to 75 degree white paper glossiness in accordance with JIS P-8142) and satisfies the following condition when the paper packed in a package is unpacked and allowed to stand at a temperature of 28° C. in an atmosphere of 85%RH for 5 minutes: 0.8≦CA/D≦3.5 wherein CA (&mgr;m) is the difference calculated by subtracting a thickness of paper before allowed to stand from a thickness of paper after allowed to stand and D (g/cm3) is the density of the transfer paper (JIS P-8118).

Abstract: An electrophotographic transfer sheet is disclosed, comprising a support having on at least one surface thereof a porous coating layer formed of a resin, wherein the volume of voids having a pore size of 10 &mgr;m or more determined by a mercury press fitting method is from 7 to 50 ml/m2. Further disclosed is a method for forming a full color image using the electrophotographic transfer sheet.

Abstract: An electrophotographic transfer sheet which comprises a substrate having, on at least one side thereof, a transparent resin layer comprising a polyester resin as a main component, wherein the weight average molecular weight (Mwa) of the transparent resin and the weight average molecular weight (Mwb) of a binding resin of a color toner used for fixing satisfy the relationship represented by the following equation:Mwa-Mwb.gtoreq.10,000and a melt inclination angle between the transparent resin and the binding resin of the color toner at the fixing temperature of the color toner is 40.degree. or less.

Abstract: An electrophotographic image-receiving film is disclosed which comprises an transparent support having on one side thereof an image-receiving layer, said support having on the other side thereof a back layer comprising an electro-conductive undercoat layer and an antifriction layer having a reduced coefficient of friction. The electrophotographic image-receiving film has excellent running properties and excellent antiblocking properties.

Abstract: The present invention provides an electrophotographic transfer film which can provide improvements in the color development at the half tone (dot) area of a projected image and the anti-offset properties. A novel electrophotographic transfer film is disclosed which comprises an image receiving layer provided on at least one side of a transparent support is provided, wherein the image receiving layer comprises a polyester including (i) a repeating unit of a dibasic acid component containing at least one dicarboxylic acid unit selected from the group consisting of a telephthalic acid unit and a 2,6-naphthalenedicarboxylic acid unit, and a sulfobenzenedicarboxylic acid unit; and (ii) a repeating unit of a divalent alcohol component containing an ethylene glycol unit, a triethylene glycol unit and a bisphenol A-ethylene oxide adduct unit. A color image formation process is also provided which comprises forming a color image on the electrophotographic transfer film.

Abstract: A robbery-proof mechanism for a vehicle mounted electronic apparatus wherein a cover for covering the electronic apparatus is accommodated in the upper space of the electronic apparatus and can be driven by a small scale drive mechanism without moving the electronic apparatus.

Abstract: A film for electrophotographic transfer comprising a transparent plastic film having a heat resistance temperature of 100.degree. C. or higher having provided on at least one side thereof a transparent resin layer, wherein the transparent resin layer comprises a polyester resin having a peak count value (A) in GPC molecular weight measurement which satisfies relationship: -30.ltoreq.A-B.ltoreq.+20, in which B is a peak count value of the binder resin of a color toner used for fixing, and an initial count value (Cp) in the GPC molecular weight measurement which satisfies relationship: -500.ltoreq.Cp-Ct.ltoreq.-200, in which Ct is an initial count value in the GPC molecular weight measurement of the binder resin of a color toner used for fixing, or a polyester resin having a weight average molecular weight of from 15000 to 40000 and a weight average molecular weight to number average molecular weight ratio of from 3.5 to 10; the transparent resin layer has a thickness of from 1 to 8 .mu.