Patent ID: 6794448
Filing Date: 2004-09-21
Classification: C08F,Y10S

Abstract:
Resin particles each of which has two surfaces composed of two convexly curved surfaces or of one convexly curved surface and one plane surface, has a boundary line between the two surfaces and satisfies the relationships:0.1 &mgr;m&lE;D&lE;500 &mgr;mâ€ƒâ€ƒ(I) 0.05&lE;d/D&lE;0.8â€ƒâ€ƒ(II) wherein the boundary line is recognizable under an electron micrograph and has a width of {fraction (1/10)} or less of the maximum height of the particle, and wherein D is the particle diameter in horizontal direction and d is the maximum height in longitudinal direction in a side view in which the boundary line is placed in horizontal direction.