Abstract: In view of the above state of the art, it is an object of the present invention to provide an optical layered body which can prevent the agglomeration of silica particles and form the desired surface roughness on the surface. An optical layered body comprising a light-transmitting substrate and an antiglare layer having a surface roughness on its surface, wherein said antiglare layer is a resin layer containing an organic particle and a nonspherical silica, and a weight ratio of organic particle/nonspherical silica is from 1/10 to 60/10.

Abstract: It is an object of the present invention to provide an optical layered body which improves an preventing scintillation property, gloss blackness, color reproducibility (preventing coloring and interference fringe) while maintaining antistatic performance and an antiglare property. An optical layered body comprising an antistatic layer, an antiglare layer and a low refractive index layer in an order on a light-transmitting substrate, wherein said antistatic layer is a resin thin layer containing antimony-doped tin oxide and a diffusion filler, and having surface roughness on its surface.

Abstract: The electrophotgraphic photoreceptor is composed of an electrically conductive substrate having formed thereon a photosensitive layer containing a phthalocyanine mixed crystal comprising titanyl phthalocyanine and hydrogen phthalocyanine, wherein the phthalocyanine mixed crystal has peaks at 6.8.degree., 7.4.degree., 15.0.degree., 24.7.degree., 26.2.degree., and 27.2.degree. of the Bragg angle (2 .theta..+-.0.2.degree.) in the X-ray diffraction spectrum and having a ratio of the peak intensity at 27.2.degree. to the peak intensity at 6.8.degree. of 1 or more. The electrophotographic photoreceptor can output the output signals as digital signals even when the input light is a digital light or an analog light and thus the electrophotographic photoreceptor can be used for an electrophotograph of a digital recording system and even when the photorecetor is used as a conventional photoreceptor for PPC (analog light input), high-quality images having sharp edges can be obtained.

Abstract: The process for producing bischoline-disulfonate derivatives of Formula (I) ##STR1## useful for enhancing the digestive function comprising reacting, in the presence of an organic solvent, a trimethylammonium salt derivative of Formula (II) ##STR2## wherein R.sup.1 and R.sup.2 are individually lower alkyl and X is a group removable by a disulfonic acid of Formula (III)R(SO.sub.3 H).sub.2 (III)wherein R is a naphthylene, or an organic base salt of said acid.

Abstract: There is provided a liquid crystal display device which includes: a double-layered-type liquid crystal cell. The cell is composed of a first cell layer and a second cell layer. The liquid crystal cell contains liquid crystal molecules with a twisted nematic orientation therein. Further, a voltage applying device is in the first cell layer. The dependency of the birefringence on the wavelength of light of the first cell layer is larger than that of the second cell layer. Accordingly, the liquid crystal display device produces a distinct and clear color image, and is useful for full-color display and multicolor display.