Abstract: The laminate film for covering of an image carried by a support has a construction comprising a transparent base material and a transparent adhesive layer formed on one side of the base material, wherein the adhesive layer is composed of a pressure-sensitive adhesive and has a surface with a fine uneven structure.

Abstract: There is prepared a printing plate on which a material being hydrophilic at a first temperature and being hydrophobic at a second temperature which is lower than the first temperature is provided. First, the whole surface of the printing plate is forcibly made either one of hydrophobic or hydrophilic. Next, a region having the other nature out of hydrophobic and hydrophilic is formed so as to correspond to an image to be printed. Then, ink is supplied onto the region having hydrophobic nature to conduct offset printing.

Abstract: The present invention provides an image-recording sheet capable of improving the gloss of a color image recorded thereon without being accompanied with hot-offset even if a toner is disposed in a high concentration on the image-receptive layer. In particular, the inventive image-recording sheet comprises a paper substrate and an image-receptive layer formed on at least one surface of the paper substrate. The image-receptive layer has a ten-point average surface roughness (Rz) of 0.1 to 3.0 mm and contains a thermoplastic resin having storage modulus of 1×103 to 1×106 Pa at 160° C. The image-recording sheet, if desired, may comprise a gloss layer disposed between the paper substrate and the image-receptive layer.

Abstract: There is prepared a printing plate on which a material being hydrophilic at a first temperature and being hydrophobic at a second temperature which is lower than the first temperature is provided. First, the whole surface of the printing plate is forcibly made either one of hydrophobic or hydrophilic. Next, a region having the other nature out of hydrophobic and hydrophilic is formed so as to correspond to an image to be printed. Then, ink is supplied onto the region having hydrophobic nature to conduct offset printing.

Abstract: The present invention provides an image-recording transparent film having a toner-fixing layer which shows an improved compatibility with a toner resin, and capable of forming a color image of high quality. An image-recording transparent film comprising a transparent substrate and a toner-receiving layer provided at least on one major surface of the substrate, the toner-receiving layer comprising a light-transmitting resin having a softening point of 90 to 180° C., and from 0.1 to 40 parts by weight of an amide nonionic surfactant based on 100 parts by weight of the light-transmitting resin which surfactant is in a compatible state with the light-transmitting resin.

Abstract: The invention provides a recording sheet including an additive, referred to herein as a compatibilizer, to improve the quality of images formed by toner powder development of electrostatic charge patterns. Recording sheets, carrying images produced by toner powder transfer and fusion on a receptor surface, according to the present invention, exhibit improved light transmission and reduced light scattering. Specifically, a transparent sheet is provided having a toner-receptive coating containing about 4 wt. % to about 25 wt. % of a compatibilizer on at least one surface, wherein the coating has a low density yellow Q factor value at least 2 less than an identical coating without the compatibilizer.

Abstract: An offset printing plate precursor comprising a substrate having provided thereon a layer containing a substance capable of absorbing radiant rays and converting the radiant energy to heat energy, and a thin layer, wherein printing is performed by following the steps of: (a) subjecting the printing plate precursor to irradiation with active light, (b) subjecting the printing plate precursor to irradiation with light/heat convertible radiant rays or heat treatment, to thereby imagewise distribute a hydrophilic area and a lipophilic area of the thin layer, and (c) bringing the thin layer into contact with printing ink to form a printing plate in which the lipophilic area has received the printing ink, to thereby perform offset printing.

Abstract: The invention provides a recording sheet including an additive, referred to herein as a compatibilizer, to improve the quality of images formed by toner powder development of electrostatic charge patterns. Recording sheets, carrying images produced by toner powder transfer and fusion on a receptor surface, according to the present invention, exhibit improved light transmission and reduced light scattering. Specifically, a transparent sheet is provided having a toner-receptive coating containing about 4 wt. % to about 25 wt % of a compatibilizer on at least one surface, wherein the coating has a low density yellow Q factor value at least 2 less than an identical coating without the compatibilizer.

Abstract: The invention provides a recording sheet including an additive, referred to herein as a compatibilizer, to improve the quality of images formed by toner powder development of electrostatic charge patterns. Recording sheets, carrying images produced by toner powder transfer and fusion on a receptor surface, according to the present invention, exhibit improved light transmission and reduced light scattering. Specifically, a transparent sheet is provided having a toner-receptive coating containing about 4 wt. % to about 25 wt % of a compatibilizer on at least one surface, wherein the coating has a low density yellow Q factor value at least 2 less than an identical coating without the compatibilizer.

Abstract: A plate material the surface of which is formed of film including as its major component a material whose surface changes from a lipophilic state to a hydrophilic state by a photocatalytic reaction and returns to a lipophilic state when subsequently subjected to a heat treatment is used for making a printing plate. The substantially entire surface of the plate material is uniformly exposed to active light and an image is written in a heat mode on the surface of the plate material, which has been exposed to the active light.

Abstract: A plate material the surface of which is formed of film including as its major component a material whose surface changes from a lipophilic state to a hydrophilic state by a photocatalytic reaction and returns to a lipophilic state when subsequently subjected to a heat treatment is used for making a printing plate. The plate material is exposed to active light over the substantially entire surface thereof with image-wise part kept unexposed. The part exposed to the active light becomes hydrophilic and repels ink while the part unexposed to the active light is kept lipophilic and receives ink. When the plate material is subsequently heated, the hydrophilic part is rendered lipophilic and the plate material can be reused.

Abstract: A a lithographic printing method comprising repetition of the steps of exposing a printing plate precursor having on the surface thereof a thin layer comprising TiO.sub.2, ZnO or at least one compound selected from the group consisting of RTiO.sub.3 wherein R represents an alkaline earth metal atom, AB.sub.2-x C.sub.x D.sub.3-x E.sub.x O.sub.10 wherein A represents a hydrogen atom or an alkali metal atom; B represents an alkaline earth metal atom or a lead atom; C represents a rare earth atom; D represents a metal atom of the group 5A of the Periodic Table; E represents a metal atom of the group 4A of the Periodic Table; and x represents a number of from 0 to 2, SnO.sub.2, Bi.sub.2 O.sub.3, and Fe.sub.2 O.sub.3 to active light to make the exposed area hydrophilic, and making the hydrophilic area hydrophobic by heat treatment.

Abstract: A laser-diode-pumped solid-state laser including a solid-state laser rod doped with a rare-earth material such as neodymium, a semiconductor laser for emitting a laser beam to pump said solid-state laser rod to oscillate a beam, and a resonator including a bulk single crystal of organic nonlinear optical material for converting the wavelength of the beam which is oscillated by said solid-state laser rod. The organic nonlinear optical material is preferably PRA, MNA, NPP, NPAN, MAP, m-NA, or the like. The semiconductor laser may comprise a single-transverse-mode, or a single-longitudinal-mode semiconductor laser.

Abstract: A fundamental wave is caused to enter a Cerenkov-radiation type optical wavelength converter device which is formed of a single-crystal organic nonlinear optical material of an orthorhombic system of mm2 point group disposed in a cladding as a waveguide and a wavelength-converted wave such as a second harmonic whose wavelength within the range of 430 to 500 nm is extracted. The wavelength of the fundamental wave is selected so that the wavelength of the wavelength-converted wave becomes longer than the absorption edge of the organic nonlinear optical material by at least 30 nm. The fundamental wave is linearly polarized in the direction of the x-optic-axis or the y-optic-axis of the crystal of the organic nonlinear optical material and then caused to enter the optical wavelength converter device, and a wavelength-converted wave which is linearly polarized in the z-optic-axis of the crystal is extracted.

Abstract: An optical wavelength converter device of the optical fiber type comprises a core made of a nonlinear optical material and cladding of an amorphous material and surrounding the core, the cladding having a refractive index lower than the refractive index of the core. Another optical wavelength converter device comprises a two- or three-dimensional optical wavelength converter device produced by growing a nonlinear optical material crystal as an optical waveguide on or in an amorphous substrate having a refractive index lower than the refractive index of the nonlinear optical material crystal. Phase matching is achieved between a radiation mode of a wavelength-converted wave in the cladding or the substrate and a nonlinear polarized wave generated by a waveguide mode of first and second fundamental waves in the core or the optical waveguide.

Abstract: An optical wavelength converter device of the optical fiber type includes a core made of a nonlinear optical material and cladding surrounding the core for converting a wave having a fundamental frequency, which wave is applied to an end of the core, to its second harmonic and radiating the second harmonic into the cladding in such a way as to eliminate interference between the waves traveling in a guided mode in which the fundamental is guided through the core and the waves traveling in a radiation mode in which the second harmonic is radiated into the cladding. The cladding has a diameter of at least 500 .mu.m.

Abstract: A bulk crystal type optical wavelength converter device is made of a monocrystalline nonlinear optical material (3,5-dimethyl-1-(4-nitrophenyl)pyrazole, referred to as PRA). A linearly polarized fundamental having a wavelength ranging from 900 to 4000 nm is applied to the bulk monocrystalline nonlinear optical material to achieve angular phase matching of the type I for obtaining a second harmonic of the fundamental. An optical wavelength converter module comprises a fiber type optical wavelength converter device and a light source device. The optical wavelength converter device includes a core made of a monocrystal of the PRA which has a crystal orientation such that the c-axis thereof extends substantially along the axis of the core. The light source device applies, to the optical wavelength converter device, a fundamental which is linearly polarized in the direction of the a-axis or b-axis of the crystal which is normal to the c-axis.

Abstract: An optical wavelength converter module comprises a fiber type optical wavelength converter device and a light source device. The optical wavelength converter device includes a core made of a monocrystalline nonlinear optical material (3,5-dimethyl-1-(4-nitrophenyl)-1,2,4-triazole). The optical material has a crystal oriented such that the b-axis thereof extends substantially along the axis of said core. The light source device applies, to the optical wavelength converter device, a fundamental which is linearly polarized in the direction of the a-axis or c-axis of said crystal which is normal to the b-axis.

Abstract: An optical wavelength converter device has a waveguide of a nonlinear optical material disposed in cladding and having a refractive index lower than the refractive index of the cladding for converting a fundamental guided through the waveguide into a second or third harmonic and radiating the second or third harmonic into the cladding. The nonlinear optical material comprises an organic nonlinear optical material having a maximum light absorption coefficient at a wavelength close to the wavelength of at least one of the fundamental and the second harmonic.