Abstract: Provided is a structure designed for adsorption, which is suitable for removing dioxin and dioxin-like substances from leachate and ground water from polluted soils or garbage, washing effluent from garbage incinerators and so on that contain DNA intercalators, particularly, dioxin and dioxin-like substances. The structure designed for adsorption is a structure designed for adsorption having an adsorbing layer containing, as a constituent, a DNA complex containing a DNA-binding protein, DNA including double strand DNA and a carrier, which can selectively remove DNA intercalators with high efficiency from water, gas and so on containing them.

Abstract: A sizing agent includes a vinyl copolymer having a repeating unit (i) having a quaternary amino group and a repeating unit (ii) derived from acrylic monomers having a hydrophilic polyoxyethylene, the ratio by mass, (i):(ii), of the repeating unit (i) to the repeating unit (ii) being 60:40 to 90:10. A recording sheet having the sizing agent is also provided.

Abstract: Provided is a method of erasing an image, including exposing an image, formed by applying ink containing a dye to a recording medium, to an oxidizing gas generated by discharge to erase the image, wherein the dye comprises an anionic anthraquinone dye and a method of recycling a recording medium.

Abstract: Provided is a structure designed for adsorption, which is suitable for removing dioxin and dioxin-like substances from leachate and ground water from polluted soils or garbage, washing effluent from garbage incinerators and so on that contain DNA intercalators, particularly, dioxin and dioxin-like substances. The structure designed for adsorption is a structure designed for adsorption having an adsorbing layer containing, as a constituent, a DNA complex containing a DNA-binding protein, DNA including double strand DNA and a carrier, which can selectively remove DNA intercalators with high efficiency from water, gas and so on containing them.

Abstract: There is provided a DNA supporting fiber capable of maintaining the stability of DNA and efficiently expressing the adsorption property of DNA. Also provided is a DNA supporting sheet useful in a variety of applications, the sheet that utilizes the fiber. The DNA supporting fiber is produced by fusing and fixing, onto the surface composed of a thermoplastic resin of a fiber, particles where DNA as an adsorbent is immobilized in a porous matrix containing an inorganic oxide.

Abstract: A liquid containing a separation target substance is brought into contact with a double helix DNA-holding phase to have the separation target substance held by the double helix DNA-holding phase, which is then removed from the liquid. On this occasion, the contact of the double helix DNA with the separation target substance is performed in an aqueous medium having a salt concentration of 0.02 mass % or more.

Abstract: The invention provides a method for manufacturing a piezoelectric element including a coating step of coating a substrate with a coating liquid for forming the piezoelectric element thereby forming a coated film, a drying step of drying the coated film, a preliminary sintering step of preliminarily sintering the coated film thereby forming an oxide film, a final sintering step of finally sintering the oxide film thereby forming a piezoelectric film, and a cooling step of cooling the piezoelectric film, wherein the steps are executed in the presence of a moisture-containing gas; in the coating step the substrate has a temperature equal to or less than 50° C. and the moisture-containing gas has a relative humidity of 60% RH or less at 25° C.; in the drying step, the substrate has a temperature equal to or less than 200° C. and the relative humidity is 10 to 70% RH; in the preliminary sintering step the substrate has a temperature of 200 to 450° C.

Abstract: The invention provides a method for manufacturing a piezoelectric element including a coating step of coating a substrate with a coating liquid for forming the piezoelectric element thereby forming a coated film, a drying step of drying the coated film, a preliminary sintering step of preliminarily sintering the coated film thereby forming an oxide film, a final sintering step of finally sintering the oxide film thereby forming a piezoelectric film, and a cooling step of cooling the piezoelectric film, wherein the steps are executed in the presence of a moisture-containing gas; in the coating step the substrate has a temperature equal to or less than 50° C. and the moisture-containing gas has a relative humidity of 60% RH or less at 25° C.; in the drying step, the substrate has a temperature equal to or less than 200° C. and the relative humidity is 10 to 70% RH; in the preliminary sintering step the substrate has a temperature of 200 to 450° C.

Abstract: A sizing agent includes a vinyl copolymer having a repeating unit (i) having a quaternary amino group and a repeating unit (ii) derived from acrylic monomers having a hydrophilic polyoxyethylene, the ratio by mass, (i):(ii), of the repeating unit (i) to the repeating unit (ii) being 60:40 to 90:10. A recording sheet having the sizing agent is also provided.

Abstract: Disclosed herein is a recording medium for ink-jet, comprising a substrate composed of kenaf paper, and an ink-receiving layer provided on the substrate, wherein the ink-receiving layer comprises an alumina hydrate, a compound represented by the general formula wherein R1, R2, R3 and R4 are, independently of one another, a substituted or unsubstituted alkyl group, and X1− is an anion of a fluoride, chloride, bromide, iodide, astatide, sulfate, alkoxylsulfate, sulfite, phosphate, phosphite, perchlorate, perbromate, periodate or chlorate, and a compound represented by the general formula wherein R5, R6, R7 and R8 are, independently of one another, a substituted or unsubstituted alkyl group except that at least one of R5, R6, R7 and R8 is a substituted or unsubstituted aryl or arylalkyl group, and X1− is an anion of a fluoride, chloride, bromide, iodide, astatide, sulfate, alkoxylsulfate, sulfite, phosphate, phosphite, perchlorate, perbromate, periodate or chlorate

Abstract: Optical recording mediums are prepared by extrusion molding. In the extrusion molding, a thermoplastic resin heated to a given temperature is pressed between a roll stamper and a roll opposite thereto. A gap between the roll stamper and the roll is precisely defined by belt members fixed on each side of the roll where the roll does not come into touch with the thermoplastic resin. The joints of the respective belt members are formed at positions different from each other on the periphery of the roll. Alternatively the gap may be defined by cutting the roll substrate at a part on which the stamper member is fixed, or by interposing endless belts with a given thickness between the roll stamper and the roll. The stamper member provided on the roll stamper is reduced in stress, and has a surface precision of 10 .mu.m or less.

Abstract: An optical recording medium is disclosed which comprises a substrate containing a polycarbonate resin and a recording layer. The substrate contains copolycarbonate resin having constitutional units represented by the formulae (x) and (y) ##STR1## wherein Z of the formula (x) is a direct bond, alkylidene, --O--, --S-- or --SO.sub.2 --; X is H, halogen, alkyl, aryl, aralkyl, alkoxy, aryloxy or aralkyloxy; R.sub.1 is H, alkyl or aralkyl; m is an integer of 1 to 3; Y of the formula (y) is alkylidene, aryl-substituted alkylene, aryl, --O--, --S--, --CO-- or --SO.sub.2 --; and each of R.sub.2, R.sub.3, R.sub.4 and R.sub.5 is H, halogen or alkyl!.

Abstract: A process for manufacturing a substrate sheet for information recording mediums using a roll stamper including a flexible stamper member having a pattern corresponding to a preformat for an information recording medium, a first fixing member and a second fixing member integrally joined to both ends of the stamper member, and a pair of fit grooves capable of fittingly receiving the fixing members and formed in the periphery of a specular roll substrate in parallel to the axial direction of the specular roll substrate. The fixing members are fitted to the fit grooves so the stamper member is fixed along the periphery of the specular roll substrate between fit grooves. The first fixing member has a first member with a coefficient of linear expansion substantially equal to the coefficient of linear expansion of the stamper member and a second member having a larger coefficient of linear expansion than the coefficient of linear expansion of the first member.

Abstract: A method for preparing a substrate sheet for an optical recording medium has the steps of controlling a roll stamper having a preformat pattern on the peripheral surface thereof and a molding roll disposed with a predetermined gap between the same and the roll stamper so that they have a predetermined temperature, feeding a thermoplastic resin heated to a predetermined temperature to the gap from a means for extruding the thermoplastic resin disposed on the upstream side of the gap, while the roll stamper and the molding roll are rotated at a predetermined rotational frequency, and then molding the thermoplastic resin into a sheet by pressing the resin between the roll stamper and the molding roll to transfer the preformat pattern to the resin.

Abstract: A roll stamper for forming a substrate sheet for information recording mediums has a flexible stamper member having a pattern corresponding to a preformat for an information recording medium; a first fixing member and a second fixing member respectively joined to both ends of the stamper member in an integral form; and a pair of fit grooves capable of fittingly receiving the fixing members, formed in the periphery of a specular roll substrate in parallel to the axial direction of the specular roll substrate. The fixing members are so fitted to the fit grooves that the stamper member is fixed along the periphery of the specular roll substrate between the fit grooves.The first fixing member has a first member showing a coefficient of linear expansion substantially equal to the coefficient of linear expansion of the stamper member and a second member having a larger coefficient of linear expansion than the coefficient of linear expansion of the first member.

Abstract: A method for transferring a viscous substance, including the steps of: providing a viscous substance capable of changing its adhesiveness corresponding to the polarity of a voltage applied thereto; disposing the viscous substance between a first electrode and a second electrode; and applying a voltage to the viscous substance plural times, thereby to reduce the adhesiveness of the viscous substance to the first electrode.

Abstract: A recording material (ink) showing a selective adhesiveness to one of a pair of electrodes applying a voltage to the recording material, is constituted by dissolving an electrolyte in a solvent. The recording material is provided with an improved stability against environmental changes, particularly against a humidity change, if the solvent is at least partly constituted by a reaction product between a ring-opening product of an alkylene oxide R--O.sub.n and glycerin or phenol, wherein R is an alkylene group and n is an integer.

Abstract: An image forming apparatus and method for forming an image includes a recording material which changes its adhesiveness in response to the polarity of the voltage applied thereto. Such a recording material can include negatively or positively changeable or inorganic particles, gas-generating solvents, a substance having a gel or sol state, and a dissociative electrolyte. The recording material is positioned between a pair of electrodes. At least one of the electrodes includes an electroconductive member and a pattern comprising an insulating material disposed on the electroconductive member. A voltage is then applied between the pair of electrodes to attach the recording material to one of the electrodes. Also provided is a pressure applicator for transferring to a transfer-receiving medium the recording material attached to the electrode.

Abstract: There is provided a method and apparatus for forming an image which includes providing a recording composition capable of changing its adhesivity corresponding to the polarity of a voltage applied thereto between a pair of electrodes. The recording composition has a transfer characteristic having a tendency to change by loss of at least one component of the recording composition. A voltage is applied between the pair of electrodes to attach the recording composition to one of the pair of electrodes to attach the recording composition to one of the pair of electrodes. Any such change in the transfer characteristic of the recording composition is detected during the process. In response to any change in the transfer characteristic additional component is added to the recording composition to compensate for that change.

Abstract: An ink which can cause a change in its adhesiveness by an electrochemical reaction is obtained by impregnating a crosslinked substance such as polyvinyl alcohol with a liquid dispersion medium comprising an organic solvent having a relative dielectric constant of 15 or larger at 25.degree. C. such as ethylene glycol. The ink shows little characteristic change due to drying, etc., and suitably retains its fluidity when left standing in the air for a long period. The ink is supplied with a pattern of energy to be provided with an adhesive pattern, which is then transferred to a recording medium such as plain paper, directly or by the medium of an intermediate transfer medium to form an ink pattern corresponding to the energy pattern applied.