Abstract: Provided is a recording method for image formation on a recording medium by application thereon of an ink containing a water-soluble dye having an anionic group or a cationic group in the molecule: the recording medium comprising a substance having an ionic group counter to the anionic or cationic group of the water-soluble dye and having molecular weight of not higher than 1,000, and a polymeric substance having molecular weight of not lower than 2,000.

Abstract: A recording medium is provided which has an ink-receiving layer mainly composed of an inorganic pigment and a binder on one face of an ink-absorbent base sheet, and a cationic substance applied on, or impregnated into, the reverse face of the base sheet.

Abstract: Disclosed herein is printing paper comprising, as principal components, pulp fibers and a filler, wherein fine particles having a particle diameter within a range of from 5 to 200 nm are held on the pulp fibers exposed on at least one surface of the printing paper in a state that their fibrous form is retained.

Abstract: Disclosed herein is a printing medium, comprising a liquid-absorbent base material, an ink-receiving layer provided on the base material, which comprises a pigment, a binder and a cationic substance, and a surface layer provided on the ink-receiving layer composed principally of cationic ultrafine particles as inorganic particles.

Abstract: An image-forming method using color ink having a surface tension of 25 to 40 dyne/cm. The color ink is applied to a glossy recording medium having a porous structure including a pigment, a binder and a cationic material.

Abstract: A pressure-sensitive transferring protective covering material comprising at least (a) first flexible substrate, (b) an adhesive layer, (c) a solid resin layer, and (d) a second flexible substrate which are stacked in the named order, wherein said first flexible substrate (a) has a peel force of 30 g/inch to 120 g/inch against said adhesive layer (b), said adhesive layer (b) contains a hindered amine series light stabilizer and has a cohesion of 500 g/inch to 1500 g/inch, said solid resin layer (c) comprises a transparent resin layer containing a ultraviolet absorber and having a glass transition temperature of 50.degree. C. or above, and said second flexible substrate (d) has a peel force of 120 g/inch to 400 g/inch against said solid resin layer (c).A method for protecting and covering a print formed on an object using said pressure-sensitive transferring protective covering material.

Abstract: A recording paper comprising pulp fibers and a filler has a surface where pulp fibers bared to the surface and pulp fibers covered with particles are present together in portions. The quantity of ink transfer at a minimum ink-shoot time interval for adjacent dots with different colors as measured by Bristow's test method is not smaller than a maximum shot-in ink quantity per unit area of recording system used.

Abstract: A recording paper formed mainly from a fibrous material with a cationic substance applied onto the surface thereof or impregnated therein contains a non-wood fiber at least. An image forming method comprises forming an image on the recording paper by the steps of developing an electrostatic image on a photosensitive member by a developing means with a toner, transferring the developed toner image from the photosensitive member onto the recording paper, and fixing the transferred toner image on the recording paper. An image forming method comprises forming an image on the recording paper by ink-jet recording by applying, onto the recording paper, droplets of an ink containing at least an acid dye and/or a direct dye, water, and a water-soluble solvent.

Abstract: Disclosed is a marked sheet, wherein an intermediate layer, a transparent ink retaining layer and an opaque ink transporting layer are sequentially provided on the rear surface of a transparent sheet having an uneven pattern on the front surface, and a pattern is formed in the ink retaining layer.

Abstract: A recording paper comprising pulp fibers and a filler has a surface where pulp fibers bared to the surface and pulp fibers covered with particles are present together in portions. The quantity of ink transfer at a minimum ink-shoot time interval for adjacent dots with different colors as measured by the Bristow's test method is not smaller than a maximum shot-in ink quantity per unit area of recording system used.

Abstract: An ink-jet recording method for forming an image on a recording medium by ejecting ink droplets through an orifice of a recording head in response to a recording signals comprises ejecting an ink having a surface tension ranging from 25 to 35 dyn/cm onto a recording medium constituted of a base sheet and a coating layer formed on the base sheet to form an image, the coating layer being selected from (a), (b), and (c) below:(a) a coating layer mainly composed of polyvinyl alcohol of a saponification degree of from 75 to 98 mol % and a polymerization degree of from 100 to 500, or a derivative thereof.(b) a coating layer mainly composed of a copolymer of vinylpyrrolidone with a vinyl monomer having a hydrophobic group, and a polyalkylene oxide or a derivative thereof, and(c) a coating layer mainly composed of an aromatic polyvinylacetal resin, and a polyalkylene oxide or a derivative thereof.