Abstract: An object of the present invention is to provide a honeycomb filter capable of preventing depth filtration and achieving a combination of high collection efficiency and low pressure loss.

Abstract: An object of the present invention is to provide a honeycomb filter having low pressure loss and high collection efficiency. The honeycomb filter of the present invention comprises a ceramic honeycomb substrate in which a multitude of cells through which a fluid flows are disposed in parallel in a longitudinal direction and are separated by cell walls, each cell being sealed at an end section at either the fluid inlet side or the fluid outlet side, and a filter layer which, among the surfaces of the cell walls, is formed on the surface of the cell walls of those cells in which the end section at the fluid inlet side is open and the end section at the fluid outlet side is sealed by a sealing material, wherein the filter layer comprises spherical ceramic particles, and the average particle size of the spherical ceramic particles increases gradually from the fluid inlet side toward the fluid outlet side.

Abstract: A honeycomb filter includes a ceramic honeycomb substrate, an auxiliary filter layer, an SCR catalyst, and a portion. The ceramic honeycomb substrate has cell walls provided along a longitudinal direction of the ceramic honeycomb substrate to define cells through which fluid is to pass and which have a fluid inlet end and a fluid outlet end opposite to the fluid inlet end along the longitudinal direction. The cells include first cells and second cells. The auxiliary filter layer is provided on first surfaces of first cell walls of the first cells. The SCR catalyst is supported on second surfaces of second cell walls of the second cells. The second surfaces substantially correspond to the first surfaces. The portion satisfies a<b. “a” (?m) represents an average pore diameter of pores of the auxiliary filter layer, and “b” (?m) represents an average particle diameter of particles constituting the SCR catalyst.

Abstract: An object of the present invention is to provide a honeycomb filter having low pressure loss and high collection efficiency. The honeycomb filter of the present invention comprises a ceramic honeycomb substrate in which a multitude of cells through which a fluid flows are disposed in parallel in a longitudinal direction and are separated by cell walls, each cell being sealed at an end section at either the fluid inlet side or the fluid outlet side, and a filter layer which, among the surfaces of the cell walls, is formed on the surface of the cell walls of those cells in which the end section at the fluid inlet side is open and the end section at the fluid outlet side is sealed by a sealing material, wherein the filter layer comprises spherical ceramic particles, and the average particle size of the spherical ceramic particles increases gradually from the fluid inlet side toward the fluid outlet side.

Abstract: An object of the present invention is to provide a honeycomb filter capable of preventing depth filtration and achieving a combination of high collection efficiency and low pressure loss.

Abstract: A honeycomb filter includes a ceramic honeycomb substrate and an auxiliary filter layer. The ceramic honeycomb substrate includes a porous honeycomb fired body having cell walls provided along a longitudinal direction of the porous honeycomb fired body to define cells through which fluid is to pass and which have a fluid inlet end and a fluid outlet end opposite to the fluid inlet end along the longitudinal direction. The cells include first cells including an inlet opening end at the fluid inlet end and an outlet closed end at the fluid outlet end. The auxiliary filter layer is provided on a surface of first cell walls of the first cells and on a pore portion in the first cell walls, and includes a first layer and a second layer. In the first layer, particles having a first average particle diameter are deposited on the surface of the first cell walls.

Abstract: A honeycomb filter includes a ceramic honeycomb substrate, an auxiliary filter layer, an SCR catalyst, and a portion. The ceramic honeycomb substrate has cell walls provided along a longitudinal direction of the ceramic honeycomb substrate to define cells through which fluid is to pass and which have a fluid inlet end and a fluid outlet end opposite to the fluid inlet end along the longitudinal direction. The cells include first cells and second cells. The auxiliary filter layer is provided on first surfaces of first cell walls of the first cells. The SCR catalyst is supported on second surfaces of second cell walls of the second cells. The second surfaces substantially correspond to the first surfaces. The portion satisfies a<b. “a” (?m) represents an average pore diameter of pores of the auxiliary filter layer, and “b” (?m) represents an average particle diameter of particles constituting the SCR catalyst.

Abstract: A semiconductor device includes a first substrate having a power-source line, an IC device mounted on the first substrate and having a power-source line, a second substrate mounted on the IC device and having a base material, a power-source layer formed inside or on a surface of the base material, an insulation layer formed on the power-source layer, and a pad formed on the insulation layer, and a via conductor connecting the power-source layer and the pad. A first route connects the power-source line of the first substrate and the power-source line of the IC device. A second route connects the power-source line of the first substrate and the power-source layer of the second substrate. A third route connects the power-source layer of the second substrate and the power-source line of the IC device.

Abstract: A ring-shaped magnet (19) is bonded on or secured to the outer peripheral side of a rotor (21) which is borne by a rotary shaft (13) which constitutes a radial pneumatic dynamic pressure bearing. A ring-shaped magnet (23) is disposed so that it is spaced at a given distance from the ring-shaped magnet (19). The rotor (21) is restricted from moving in the axial direction and is rotatably supported in the radial direction by the magnetic attracting forces of two ring-shaped magnets (19, 23). The rotor (21) is eccentric by 0.5 relative to the axis of rotation by the difference in magnetic balance between the ring-shaped magnets (19, 23). Accordingly, the radial pneumatic dynamic pressure bearing generates a high dynamic pressure. The herringbone pneumatic dynamic pressure generating grooves (15a, 15b) generate a high dynamic pressure. They provide a very high radial load bearing ability to enhance the accuracy of rotation.