Abstract: The invention provides a recording sheet having an ink-receiving layer, which comprises a substrate sheet and an ink-receiving layer formed thereon, said ink-receiving layer comprising oxide particles, wherein the ink-receiving layer has pores having a diameter in the range of 3.4 to 2,000 nm, the pore volume of pores having a diameter of 3.4 to 30 nm is in the range of 0.2 to 1.8 ml/g, and the pore volume of pores having a diameter of 30 to 2,000 nm is in the range of 0.1 to 1.5 ml/g. It is preferable that the oxide particles have an average particle diameter of 2 to 1,000 nm and are a mixture of hydrophobic oxide particles and hydrophilic oxide particles. This recording sheet shows sufficient strength, has excellent printability such that images of uniform density and high sharpness can be printed thereon without bleeding, and is excellent in water resistance, weathering resistance and fading resistance.

Abstract: The porous composite oxide particle is coated with a porous silica-based inorganic oxide layer, and also a substrate has a coating film with the fine particles thereon, which has a low refractive index and excellent in adhesion with a resin or the like, strength, the ability to reduce reflection and the like. The fine particles include porous composite oxide with silica and an inorganic oxide other than silica, wherein the fine particles are coated with a porous silica-based inorganic oxide layer having a thickness from 0.5 to 20 nm. The fine particles include preferably an organic group directly bonded to silicon, and SR/ST, the ratio of the molar amount of silicon having the organic group directly bonded thereto (SR) vs the molar amount of the total silicon (ST), is preferably in the range from 0.001 to 0.9.

Abstract: Finings comprising a silica sol which is added to beer during the lagering process have at least two peaks in the particle size distribution curve of the colloidal particles of said silica sol, of which particle diameters Dp and Dq are in the range of 20 nm Dp 40 nm and 150 nm Dq 600 nm, respectively.

Abstract: The invention provides a recording sheet having an ink-receiving layer, which comprises a substrate sheet and an ink-receiving layer formed thereon, said ink-receiving layer comprising oxide particles, wherein the ink-receiving layer has pores having a diameter in the range of 3.4 to 2,000 nm, the pore volume of pores having a diameter of 3.4 to 30 nm is in the range of 0.2 to 1.8 ml/g, and the pore volume of pores having a diameter of 30 to 2,000 nm is in the range of 0.1 to 1.5 ml/g. It is preferable that the oxide particles have an average particle diameter of 2 to 1,000 nm and are a mixture of hydrophobic oxide particles and hydrophilic oxide particles. This recording sheet shows sufficient strength, has excellent printability such that images of uniform density and high sharpness can be printed thereon without bleeding, and is excellent in water resistance, weathering resistance and fading resistance.

Abstract: The invention provides a recording sheet having an ink-receiving layer, which comprises a substrate sheet and an ink-receiving layer formed thereon, said ink-receiving layer comprising oxide particles, wherein the ink-receiving layer has pores having a diameter in the range of 3.4 to 2,000 nm, the pore volume of pores having a diameter of 3.4 to 30 nm is in the range of 0.2 to 1.8 ml/g, and the pore volume of pores having a diameter of 30 to 2,000 nm is in the range of 0.1 to 1.5 ml/g. It is preferable that the oxide particles have an average particle diameter of 2 to 1,000 nm and are a mixture of hydrophobic oxide particles and hydrophilic oxide particles. This recording sheet shows sufficient strength, has excellent printability such that images of uniform density and high sharpness can be printed thereon without bleeding, and is excellent in water resistance, weathering resistance and fading resistance.

Abstract: The present invention relates to spherical laminated particles each comprising a core particle and a laminate part disposed on a surface of the core particle, wherein the laminate part has a compressive modulus which is smaller than that of the core particle. These spherical laminated particles have a large compressive strength and is excellent in the recovery from a deformation by an arbitrary load, when the load is removed afterwward, as compared with conventional elastic particles composed of a single substance. Therefore, the use of these spherical laminated particles as spacers minimizes the difference in extent of displacement of spacer particles attributed to the difference in load on individual spacer particles caused by, for example, the waviness of a substrate for liquid crystal display cell during the manufacturing of the liquid crystal display cell, so that the cell gap uniformity can be ensured.