Abstract: A method of forming barrier ribs for a plasma display panel comprising the steps of: forming an uncured barrier rib material layer on a glass substrates; rolling on said barrier rib material layer a roller having an intaglio recessed pattern corresponding to a desired pattern for the barrier ribs to be formed, so that the freestanding structures of the rib material corresponding to the barrier ribs; and drying and firing the barrier rib material shaped into the freestanding structures, whereby the barrier ribs for partitioning discharge cells are formed on the glass substrate. A phosphor can be filled in the discharge cells by rolling a roller having groove or recessed pattern corresponding the barrier rib pattern on the phosphor material laminated on the substrate. A phosphor material sheet used to form discharge cells on the substrate and manufacturing method thereof are also provided.

Abstract: An apparatus for thermal development of thermal fixation of a flexible sheet of photosensitive material. The apparatus includes a heating roller provided with a heating lamp inside said heating roller, a plurality of conveyance rollers disposed in pressure contact with the heating roller, so that when the sheet is put in between the heating roller and the conveyance rollers, the sheet is heated to undergo the processing, and guides, provided in pressure contact with the peripheral surface of the heating roller, for holding the sheet against the peripheral surface of the heating roller.

Abstract: An ink composition for ink jet recording which is an oil in-water type dispersion prepared by dispersing, in an aqueous medium, a mixture of a hydrophobic dye solution and finely divided particles of vinyl polymer, wherein the vinyl polymer is essentially insoluble in water and does not swell in water but swells in solvents capable of dissolving hydrophobic dyes, said ink composition having a low viscosity, a high density and being very stable. The records obtained using this ink composition are not smeared or removed upon contact with water or perspiration.

Abstract: A method and apparatus for dispersing one liquid of two mutually insoluble liquids into the other liquid or dispersing a pulverized solid powder into a liquid, wherein a mixture of the two liquids to be dispersed or a mixture of liquids containing pulverized solid powder to be dispersed is jetted through a single or a plurality of unit dispersers to a relatively wider gap portion than a nozzle to impinge upon wall surfaces to change the direction of the liquid flow.